CA2597415A1 - Menthane carboxamide derivatives having cooling properties - Google Patents
Menthane carboxamide derivatives having cooling properties Download PDFInfo
- Publication number
- CA2597415A1 CA2597415A1 CA002597415A CA2597415A CA2597415A1 CA 2597415 A1 CA2597415 A1 CA 2597415A1 CA 002597415 A CA002597415 A CA 002597415A CA 2597415 A CA2597415 A CA 2597415A CA 2597415 A1 CA2597415 A1 CA 2597415A1
- Authority
- CA
- Canada
- Prior art keywords
- cooling
- compounds
- compound
- menthanecarboxamide
- cooling properties
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- 238000001816 cooling Methods 0.000 title claims abstract description 19
- FINKDHKJINNQQW-UHFFFAOYSA-N 5-methyl-2-propan-2-ylcyclohexane-1-carboxamide Chemical class CC(C)C1CCC(C)CC1C(N)=O FINKDHKJINNQQW-UHFFFAOYSA-N 0.000 title description 4
- 150000001875 compounds Chemical class 0.000 claims abstract description 27
- 210000000214 mouth Anatomy 0.000 claims description 8
- 230000035597 cooling sensation Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 239000000551 dentifrice Substances 0.000 abstract description 2
- 239000002537 cosmetic Substances 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 description 11
- 239000000047 product Substances 0.000 description 10
- OKKJLVBELUTLKV-MZCSYVLQSA-N Deuterated methanol Chemical compound [2H]OC([2H])([2H])[2H] OKKJLVBELUTLKV-MZCSYVLQSA-N 0.000 description 8
- 239000000243 solution Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- NOOLISFMXDJSKH-KXUCPTDWSA-N (-)-Menthol Chemical compound CC(C)[C@@H]1CC[C@@H](C)C[C@H]1O NOOLISFMXDJSKH-KXUCPTDWSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- NOOLISFMXDJSKH-UHFFFAOYSA-N DL-menthol Natural products CC(C)C1CCC(C)CC1O NOOLISFMXDJSKH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 239000001525 mentha piperita l. herb oil Substances 0.000 description 2
- 229940041616 menthol Drugs 0.000 description 2
- OSWPMRLSEDHDFF-UHFFFAOYSA-N methyl salicylate Chemical compound COC(=O)C1=CC=CC=C1O OSWPMRLSEDHDFF-UHFFFAOYSA-N 0.000 description 2
- 239000002324 mouth wash Substances 0.000 description 2
- 239000012044 organic layer Substances 0.000 description 2
- 235000019477 peppermint oil Nutrition 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- -1 that is Chemical class 0.000 description 2
- MGSRCZKZVOBKFT-UHFFFAOYSA-N thymol Chemical compound CC(C)C1=CC=C(C)C=C1O MGSRCZKZVOBKFT-UHFFFAOYSA-N 0.000 description 2
- 235000019505 tobacco product Nutrition 0.000 description 2
- DXNCTLORAFZVGQ-UHFFFAOYSA-N 1,3-benzoxazol-4-amine Chemical compound NC1=CC=CC2=C1N=CO2 DXNCTLORAFZVGQ-UHFFFAOYSA-N 0.000 description 1
- 125000000166 1,3-dioxalanyl group Chemical group 0.000 description 1
- WEEGYLXZBRQIMU-UHFFFAOYSA-N 1,8-cineole Natural products C1CC2CCC1(C)OC2(C)C WEEGYLXZBRQIMU-UHFFFAOYSA-N 0.000 description 1
- CTNKPLCMTHMQIO-UHFFFAOYSA-N 5-methyl-n-(4-morpholin-4-ylphenyl)-2-propan-2-ylcyclohexane-1-carboxamide Chemical compound CC(C)C1CCC(C)CC1C(=O)NC1=CC=C(N2CCOCC2)C=C1 CTNKPLCMTHMQIO-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- 101150041968 CDC13 gene Proteins 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- WEEGYLXZBRQIMU-WAAGHKOSSA-N Eucalyptol Chemical compound C1C[C@H]2CC[C@]1(C)OC2(C)C WEEGYLXZBRQIMU-WAAGHKOSSA-N 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- ZCQWOFVYLHDMMC-UHFFFAOYSA-N Oxazole Chemical group C1=COC=N1 ZCQWOFVYLHDMMC-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical group C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 1
- 239000005844 Thymol Substances 0.000 description 1
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 229960005233 cineole Drugs 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 235000019439 ethyl acetate Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000037406 food intake Effects 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229960001047 methyl salicylate Drugs 0.000 description 1
- 229940051866 mouthwash Drugs 0.000 description 1
- NVVDUCGEKAIMHN-UHFFFAOYSA-N n-(1,3-benzodioxol-5-yl)-5-methyl-2-propan-2-ylcyclohexane-1-carboxamide Chemical compound CC(C)C1CCC(C)CC1C(=O)NC1=CC=C(OCO2)C2=C1 NVVDUCGEKAIMHN-UHFFFAOYSA-N 0.000 description 1
- YOCBVCCQNSOMNK-UHFFFAOYSA-N n-(1,3-benzoxazol-4-yl)-5-methyl-2-propan-2-ylcyclohexane-1-carboxamide Chemical compound CC(C)C1CCC(C)CC1C(=O)NC1=CC=CC2=C1N=CO2 YOCBVCCQNSOMNK-UHFFFAOYSA-N 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- 229920001992 poloxamer 407 Polymers 0.000 description 1
- CVHZOJJKTDOEJC-UHFFFAOYSA-N saccharin Chemical compound C1=CC=C2C(=O)NS(=O)(=O)C2=C1 CVHZOJJKTDOEJC-UHFFFAOYSA-N 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229960000790 thymol Drugs 0.000 description 1
- 239000000606 toothpaste Substances 0.000 description 1
- 229940034610 toothpaste Drugs 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
- C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
- C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D231/12—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
- A61K8/42—Amides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D249/00—Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms
- C07D249/02—Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms not condensed with other rings
- C07D249/08—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D263/00—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings
- C07D263/02—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings
- C07D263/30—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D263/32—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D263/00—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings
- C07D263/52—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings condensed with carbocyclic rings or ring systems
- C07D263/54—Benzoxazoles; Hydrogenated benzoxazoles
- C07D263/56—Benzoxazoles; Hydrogenated benzoxazoles with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached in position 2
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D277/00—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
- C07D277/60—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings condensed with carbocyclic rings or ring systems
- C07D277/62—Benzothiazoles
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D295/00—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
- C07D295/04—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms
- C07D295/12—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly or doubly bound nitrogen atoms
- C07D295/135—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly or doubly bound nitrogen atoms with the ring nitrogen atoms and the substituent nitrogen atoms separated by carbocyclic rings or by carbon chains interrupted by carbocyclic rings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
- A61K2800/24—Thermal properties
- A61K2800/244—Endothermic; Cooling; Cooling sensation
Abstract
A compound of the formula (I) in which X and Y are selected as defined in the description. The compounds have cooling properties and are useful in, for example, foodstuffs , dentifrices and cosmetics .
Description
MENTHANE CARBOXAMIDE DERIVATIVES HAVING COOLING PROPERTIES
This invention relates to heterocyclic compounds having cooling properties.
Cooling compounds, that is, chemical compounds that impart a cooling sensation to the skin or the niucous membranes of the body, are well known to the art and are widely used in a variety of products such as foodstuffs, tobacco products, beverages, dentifrices, mouthwashes and toiletries.
One class of cooling compounds that have enjoyed substantial success consists of N-substituted p-menthane carboxamides. Examples of these compounds are described in, for example, British Patents GB 1,351,761-2 and United States Patent US 4,150,052.
It has now been found that a particular selection of such compounds exhibits a cooling effect that is both surprisingly strong and long-lasting. The invention therefore provides a compound of the formula I
NN
I X I
O ~ Y
in which X and Y are selected as follows:
(i) X is H and Y is selected from the group consisting of O N N
_~N~ ~ o ~
\
N N O
~ a > >
O
and N ; or (ii) X and Y together form a bivalent radical selected from the group consisting of -O-CH2-O-, -N=CH-0- and -N=CH-S- thus forming together with the carbon atoms to which the radical is attached a 5-membered ring (. a 1,3-dioxalane ring, a 1,3-oxazole ring or a 1,3-thiazole ring respectively) Specific examples of compounds of Formula I are shown below:
H
N O H
N S
O
O I
N
N=====\
N N O
O
O
N
O \
O
\
\
N
N H
N
N / O
O y yy \ N
~~
This invention relates to heterocyclic compounds having cooling properties.
Cooling compounds, that is, chemical compounds that impart a cooling sensation to the skin or the niucous membranes of the body, are well known to the art and are widely used in a variety of products such as foodstuffs, tobacco products, beverages, dentifrices, mouthwashes and toiletries.
One class of cooling compounds that have enjoyed substantial success consists of N-substituted p-menthane carboxamides. Examples of these compounds are described in, for example, British Patents GB 1,351,761-2 and United States Patent US 4,150,052.
It has now been found that a particular selection of such compounds exhibits a cooling effect that is both surprisingly strong and long-lasting. The invention therefore provides a compound of the formula I
NN
I X I
O ~ Y
in which X and Y are selected as follows:
(i) X is H and Y is selected from the group consisting of O N N
_~N~ ~ o ~
\
N N O
~ a > >
O
and N ; or (ii) X and Y together form a bivalent radical selected from the group consisting of -O-CH2-O-, -N=CH-0- and -N=CH-S- thus forming together with the carbon atoms to which the radical is attached a 5-membered ring (. a 1,3-dioxalane ring, a 1,3-oxazole ring or a 1,3-thiazole ring respectively) Specific examples of compounds of Formula I are shown below:
H
N O H
N S
O
O I
N
N=====\
N N O
O
O
N
O \
O
\
\
N
N H
N
N / O
O y yy \ N
~~
The compounds may be easily prepared and isolated by art-recognized methods They are distinguished from similar compounds of the prior art by their surprisingly high cooling effect (up to 100 times higher than that of similar known compounds) and by the longevity of the cooling effect, which adds to their attractiveness in a large variety of products.
For example, a small group of panelists was asked to taste various solutions of cooling compounds and indicate which solutions had a cooling intensity similar or slightly higher than that of a solution of menthol at 2ppm. Results are shown in table 1.
Table 1 experiment on cooling intensity.
Chemical Concentration 1-Menthol 2.0 ppm N-4-(pyrazol-1-yl)-phenyl-3-p-menthanecarboxamide 0.02 ppm N-4-([1,2,4]triazol-l-yl)-phenyl-3-p-menthanecarboxainide 0.02 ppm N-3-(oxazol-5-yl)-phenyl-3-p-menthanecarboxamide 0.1 ppm N-4-(morpholin-4-yl)-phenyl 3-p-menthanecarboxamide 0.2 ppm N-4-(oxazol-5-yl)-phenyl-3-p-menthanecarboxamide 0.5 ppm N-benzooxazol-4-yl-3-p-menthanecarboxamide 0.02 ppm N-benzo[1,3]dioxol-5-yl-3-p-menthanecarboxamide 0.02 ppm N-benzothiazol-6-yl menthanecarboxamide 0.3 ppm From Table 1, it can be seen that the compounds of Formula I are up to 100 times stronger than menthol, the reference cooling compound. Compounds of Formula I are also much stronger and last longer than WS-3, the best cooling compound of the prior art.
The compounds of the invention may be used in products that are applied to the mouth or the skin to give a cooling sensation. By "applying" is meant any form of bringing into contact, for example, oral ingestion or, in the case of tobacco products, inhalation.
In the case of application to the skin, it may be, for example, by including the compound in a cream or salve, or in a sprayable composition. The invention therefore also provides a method of providing a cooling effect to the mouth or skin by applying tliereto a product comprising a compound as hereinabove described. The invention also provides a composition that provides a cooling sensation to the skin or oral cavity, comprising a compound as hereinabove defined.
The invention is now further described by means of the following non-limiting examples, which describe preferred embodiments.
Example 1 Preparation of N-benzooxazol-4-y13-p-menthanecarboxamide To a flask, were added 0.5 g (3.7 mmol) of benzooxazol-4-ylamine, 0.7 mL of triethylamine and 10 mL of dichloromethane. The mixture is cooled to 0 C and 0.71 g of 3-p-menthanecarboxyl chloride were added dropwise over 5 minutes. The reaction mixture was stirred overnight. To the reaction mixture, 10mL of water were added. The mixture was separated. The aqueous layer is washed with EtOAc (3 x 5rnL). The combined organic layers were washed with 5mL water. The organic layer was dried over Na2SO4. The solvent was evaporated in vacuo to afford the crude product, which was purified over silica gel to afford 0.46 g of the desired product with the following spectroscopic properties:
MS: 300 ([M"]), 133, 97, 83 i H NMR (300 MHz; CDC13) 6: 8.35 (s, 1H), 8.14 (d, 1H), 7.68 (d, 1H), 7.54 (br.
s, 1H), 7.18 (dd, 1H), 2.25 (t, 1H), 1.91 -1.61 (m, 5H), 1.5 -1.23 (m, 2H), 1.17- 0.9 (m, 2H), 0.94 (d, 3H), 0.93 (d, 3H), 0.85 (d, 3H) Example 2 Preparation of N-benzooxazol-6-y13-p-menthanecarboxamide:
A preparation similar to that described in example 1 gives the desired product with the following spectroscopic properties:
MS: 300 ([M+]), 133, 97, 83 i H NMR (300 MHz; CD3OD) S: 8.33 (s, 1H), 8.02 (m, 2H), 7.23 (dd, 1H), 2.4 (ddd, 1H), 1.88-1.54 (m, 5H), 1.37 (m, IH), 1.0-1.3 (m, 3H), 0.98 (d, 3H), 0.86 (d,3H), 0.82 (d, 3H) Example 3 Preparation of N-benzothiazol-6-yl menthanecarboxamide:
A preparation similar to that described in example 1 gives the desired product with the following spectroscopic properties:
MS: 316 ([M+]), 150, 97, 83 i H NMR (300 MHz; CD3OD) 8: 9.12 (s,1H), 8.49 (d, 1H), 7.91 (d, 1H), 7.54 (d, 1H), 2.2 (ddd, 1H), 1.88-1.54 (m, 5H), 1.21-1.47 (m, 4H), 0.99 (d, 3H), 0.93 (d, 3H), 0.85 (d, 3H) Example 4 Preparation of N-4-([1,2,4]triazol-1-yl)-phenyl-3-p-menthanecarboxamide A preparation similar to that described in example 1 gives the desired product with the following spectroscopic properties:
MS: 326 ([M}]), 160, 97, 83 i H NMR (300 MHz; CD3OD) S: 8.98 (s, 1H), 8.07 (s, 1H), 7.84 (s, 4H), 2.26 (t, 1H), 1.9 -1.5 (m, 5H), 1.45 -1.3 (m, 1H), 1.25-1 (m, 3H), 0.94 (d, 3H), 0.86 (d, 3H), 0.8 (d, 3H) Example 5 Preparation of N-4-(oxazol-5-yl)-phenyl-3-p-menthanecarboxamide:
A preparation similar to that described in example 1 gives the desired product with the following spectroscopic properties:
MS: 326([M+]), 160, 139, 97, 83 i H NMR (300 MHz; CD3OD) S: 8.19 (s, 1H), 7.66 (s, 4H), 7.42 (s, 1H), 2.35 (ddd, 1H), 1.88-1.54 (m, 5H), 1.4-1.35 (m, 1H), 1.0-1.3 (m, 3H), 0.95 (d, 3H), 0.91 (d,3H), 0.84 (d, 3H) Example 6 Preparation of N-3-(oxazol-5-yl)-phenyl-3-p-menthanecarboxamide:
A preparation similar to that described in example 1 gives the desired product with the following spectroscopic properties:
MS: 326([M+]), 160, 139, 97, 83 Example 7 Application in mouthwash Alcohol 95% 177mL
Sorbito170% 290 g Compound of example 1 as a 1% solution in alcohol lOmL
Peppermint oil, Terpeneless 0.300 g Methyl salicylate 0.640 g Eucalyptol 0.922 g Thymol 0.639 g Benzoic acid 1.500 g Pluronic F127 5.000 g Sodium Saccharin 0.600 g Sodium Citrate 0.300 g Citric Acid 0.100 g Water q.s. 1 liter All the ingredients are mixed. 30 mL of obtained solution is put in the mouth, swished around, gargled and spit out. An intense cooling is felt in every area of the mouth as well as lips. The cooling perception lasts for several hours Example 5 Application in toothpaste Opaque toothgel 98.000 g Compound of example 6 as a 2% solution in PG 1.500g Peppermint oil, Terpeneless 0.500g The chemicals are mixed in the toothgel, a piece of toothgel is put on a toothbrush and a panelist's teeth are brushed. The niouth is rinsed with water and the water is spit out. An intense cooling sensation is felt by the panelist in all areas of the mouth.
The cooling perception lasts for several hours.
For example, a small group of panelists was asked to taste various solutions of cooling compounds and indicate which solutions had a cooling intensity similar or slightly higher than that of a solution of menthol at 2ppm. Results are shown in table 1.
Table 1 experiment on cooling intensity.
Chemical Concentration 1-Menthol 2.0 ppm N-4-(pyrazol-1-yl)-phenyl-3-p-menthanecarboxamide 0.02 ppm N-4-([1,2,4]triazol-l-yl)-phenyl-3-p-menthanecarboxainide 0.02 ppm N-3-(oxazol-5-yl)-phenyl-3-p-menthanecarboxamide 0.1 ppm N-4-(morpholin-4-yl)-phenyl 3-p-menthanecarboxamide 0.2 ppm N-4-(oxazol-5-yl)-phenyl-3-p-menthanecarboxamide 0.5 ppm N-benzooxazol-4-yl-3-p-menthanecarboxamide 0.02 ppm N-benzo[1,3]dioxol-5-yl-3-p-menthanecarboxamide 0.02 ppm N-benzothiazol-6-yl menthanecarboxamide 0.3 ppm From Table 1, it can be seen that the compounds of Formula I are up to 100 times stronger than menthol, the reference cooling compound. Compounds of Formula I are also much stronger and last longer than WS-3, the best cooling compound of the prior art.
The compounds of the invention may be used in products that are applied to the mouth or the skin to give a cooling sensation. By "applying" is meant any form of bringing into contact, for example, oral ingestion or, in the case of tobacco products, inhalation.
In the case of application to the skin, it may be, for example, by including the compound in a cream or salve, or in a sprayable composition. The invention therefore also provides a method of providing a cooling effect to the mouth or skin by applying tliereto a product comprising a compound as hereinabove described. The invention also provides a composition that provides a cooling sensation to the skin or oral cavity, comprising a compound as hereinabove defined.
The invention is now further described by means of the following non-limiting examples, which describe preferred embodiments.
Example 1 Preparation of N-benzooxazol-4-y13-p-menthanecarboxamide To a flask, were added 0.5 g (3.7 mmol) of benzooxazol-4-ylamine, 0.7 mL of triethylamine and 10 mL of dichloromethane. The mixture is cooled to 0 C and 0.71 g of 3-p-menthanecarboxyl chloride were added dropwise over 5 minutes. The reaction mixture was stirred overnight. To the reaction mixture, 10mL of water were added. The mixture was separated. The aqueous layer is washed with EtOAc (3 x 5rnL). The combined organic layers were washed with 5mL water. The organic layer was dried over Na2SO4. The solvent was evaporated in vacuo to afford the crude product, which was purified over silica gel to afford 0.46 g of the desired product with the following spectroscopic properties:
MS: 300 ([M"]), 133, 97, 83 i H NMR (300 MHz; CDC13) 6: 8.35 (s, 1H), 8.14 (d, 1H), 7.68 (d, 1H), 7.54 (br.
s, 1H), 7.18 (dd, 1H), 2.25 (t, 1H), 1.91 -1.61 (m, 5H), 1.5 -1.23 (m, 2H), 1.17- 0.9 (m, 2H), 0.94 (d, 3H), 0.93 (d, 3H), 0.85 (d, 3H) Example 2 Preparation of N-benzooxazol-6-y13-p-menthanecarboxamide:
A preparation similar to that described in example 1 gives the desired product with the following spectroscopic properties:
MS: 300 ([M+]), 133, 97, 83 i H NMR (300 MHz; CD3OD) S: 8.33 (s, 1H), 8.02 (m, 2H), 7.23 (dd, 1H), 2.4 (ddd, 1H), 1.88-1.54 (m, 5H), 1.37 (m, IH), 1.0-1.3 (m, 3H), 0.98 (d, 3H), 0.86 (d,3H), 0.82 (d, 3H) Example 3 Preparation of N-benzothiazol-6-yl menthanecarboxamide:
A preparation similar to that described in example 1 gives the desired product with the following spectroscopic properties:
MS: 316 ([M+]), 150, 97, 83 i H NMR (300 MHz; CD3OD) 8: 9.12 (s,1H), 8.49 (d, 1H), 7.91 (d, 1H), 7.54 (d, 1H), 2.2 (ddd, 1H), 1.88-1.54 (m, 5H), 1.21-1.47 (m, 4H), 0.99 (d, 3H), 0.93 (d, 3H), 0.85 (d, 3H) Example 4 Preparation of N-4-([1,2,4]triazol-1-yl)-phenyl-3-p-menthanecarboxamide A preparation similar to that described in example 1 gives the desired product with the following spectroscopic properties:
MS: 326 ([M}]), 160, 97, 83 i H NMR (300 MHz; CD3OD) S: 8.98 (s, 1H), 8.07 (s, 1H), 7.84 (s, 4H), 2.26 (t, 1H), 1.9 -1.5 (m, 5H), 1.45 -1.3 (m, 1H), 1.25-1 (m, 3H), 0.94 (d, 3H), 0.86 (d, 3H), 0.8 (d, 3H) Example 5 Preparation of N-4-(oxazol-5-yl)-phenyl-3-p-menthanecarboxamide:
A preparation similar to that described in example 1 gives the desired product with the following spectroscopic properties:
MS: 326([M+]), 160, 139, 97, 83 i H NMR (300 MHz; CD3OD) S: 8.19 (s, 1H), 7.66 (s, 4H), 7.42 (s, 1H), 2.35 (ddd, 1H), 1.88-1.54 (m, 5H), 1.4-1.35 (m, 1H), 1.0-1.3 (m, 3H), 0.95 (d, 3H), 0.91 (d,3H), 0.84 (d, 3H) Example 6 Preparation of N-3-(oxazol-5-yl)-phenyl-3-p-menthanecarboxamide:
A preparation similar to that described in example 1 gives the desired product with the following spectroscopic properties:
MS: 326([M+]), 160, 139, 97, 83 Example 7 Application in mouthwash Alcohol 95% 177mL
Sorbito170% 290 g Compound of example 1 as a 1% solution in alcohol lOmL
Peppermint oil, Terpeneless 0.300 g Methyl salicylate 0.640 g Eucalyptol 0.922 g Thymol 0.639 g Benzoic acid 1.500 g Pluronic F127 5.000 g Sodium Saccharin 0.600 g Sodium Citrate 0.300 g Citric Acid 0.100 g Water q.s. 1 liter All the ingredients are mixed. 30 mL of obtained solution is put in the mouth, swished around, gargled and spit out. An intense cooling is felt in every area of the mouth as well as lips. The cooling perception lasts for several hours Example 5 Application in toothpaste Opaque toothgel 98.000 g Compound of example 6 as a 2% solution in PG 1.500g Peppermint oil, Terpeneless 0.500g The chemicals are mixed in the toothgel, a piece of toothgel is put on a toothbrush and a panelist's teeth are brushed. The niouth is rinsed with water and the water is spit out. An intense cooling sensation is felt by the panelist in all areas of the mouth.
The cooling perception lasts for several hours.
Claims (4)
1. A compound of the formula I
in which X and Y are selected as follows:
(i) X is H and Y is selected from the group consisting of or (ii) X and Y together form a bivalent radical selected from the group consisting of -O-CH2-O-, N=CH-O- and N=CH-S- thus forming together with the carbon atoms to which the radical is attached a 5-membered ring.
in which X and Y are selected as follows:
(i) X is H and Y is selected from the group consisting of or (ii) X and Y together form a bivalent radical selected from the group consisting of -O-CH2-O-, N=CH-O- and N=CH-S- thus forming together with the carbon atoms to which the radical is attached a 5-membered ring.
2. A method of providing a cooling effect to the mouth or skin by applying thereto a product comprising a compound according to claim 1.
3. A composition that provides a cooling sensation to the skin or oral cavity, comprising a compound according to claim 1.
4. A compound of formula I, selected from the group consisting of
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US65756205P | 2005-03-01 | 2005-03-01 | |
US60/657,562 | 2005-03-01 | ||
PCT/CH2006/000116 WO2006092074A1 (en) | 2005-03-01 | 2006-02-23 | Menthane carboxamide derivatives having cooling properties |
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EP (1) | EP1853565B1 (en) |
JP (1) | JP2008531606A (en) |
KR (1) | KR20070107083A (en) |
CN (1) | CN101133030B (en) |
AT (1) | ATE482199T1 (en) |
BR (1) | BRPI0607407A2 (en) |
CA (1) | CA2597415A1 (en) |
DE (1) | DE602006017038D1 (en) |
ES (1) | ES2352563T3 (en) |
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ES2342466T7 (en) | 2003-11-21 | 2012-11-19 | Givaudan Sa | P-MENTANOCARBOXAMIDS N-SUBSTITUTED. |
US8263046B2 (en) | 2005-10-25 | 2012-09-11 | Givaudan S.A. | N-phenyl-N-pyridinyl-benzamides and benzenesulfonomides having cooling properties |
WO2008075942A1 (en) * | 2006-12-20 | 2008-06-26 | Givaudan Nederland Services B.V. | N-substituted-p-menthane-3-carboxamide and uses thereof |
WO2009076792A1 (en) * | 2007-12-19 | 2009-06-25 | Givaudan Sa | Cooling compounds |
WO2009089641A1 (en) * | 2008-01-17 | 2009-07-23 | Givaudan Sa | Benzimidazole derivatives and their use as cooling agents |
GB0902849D0 (en) * | 2009-02-19 | 2009-04-08 | Givaudan Sa | Organic compounds |
GB201103103D0 (en) | 2011-02-23 | 2011-04-06 | Givaudan Sa | Organic compounds |
EP2497458A1 (en) | 2011-03-08 | 2012-09-12 | B.R.A.I.N. Biotechnology Research And Information Network AG | Small molecule modulators of the cold and menthol receptor TRPM8 |
CN106458861B (en) | 2014-04-23 | 2020-05-19 | 宝洁公司 | Cyclopropanecarboxamides having cooling properties |
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GB1351761A (en) * | 1971-02-04 | 1974-05-01 | Wilkinson Sword Ltd | Substituted p-menthane carboxamides and compositions containing them |
US5918309A (en) * | 1997-10-14 | 1999-07-06 | Second Chance Body Armor, Inc. | Blunt force resistant structure for a protective garment |
AU2003271498A1 (en) * | 2002-10-28 | 2004-05-13 | Givaudan Sa | Coolant solutions and compositions comprising the sameitle |
CN102389409B (en) | 2003-07-02 | 2014-01-22 | 健泰科生物技术公司 | TRP-P8 active compounds and therapeutic treatment methods |
CA2535265C (en) | 2003-08-22 | 2014-01-28 | Dendreon Corporation | Compositions and methods for the treatment of disease associated with trp-p8 expression |
ES2342466T7 (en) * | 2003-11-21 | 2012-11-19 | Givaudan Sa | P-MENTANOCARBOXAMIDS N-SUBSTITUTED. |
GB0425661D0 (en) | 2004-11-23 | 2004-12-22 | Givaudan Sa | Organic compounds |
US8673198B2 (en) * | 2006-02-18 | 2014-03-18 | Honeywell International Inc | Method of making improved ballistic products |
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- 2006-02-23 KR KR1020077019793A patent/KR20070107083A/en not_active Application Discontinuation
- 2006-02-23 US US11/884,479 patent/US7868004B2/en not_active Expired - Fee Related
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JP2008531606A (en) | 2008-08-14 |
US20080305051A1 (en) | 2008-12-11 |
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CN101133030B (en) | 2010-07-28 |
WO2006092074A1 (en) | 2006-09-08 |
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