Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C57/00—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms
  • C07C57/02—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms with only carbon-to-carbon double bonds as unsaturation
  • C07C57/03—Monocarboxylic acids
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C59/00—Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
  • C07C59/01—Saturated compounds having only one carboxyl group and containing hydroxy or O-metal groups
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
  • C11B9/00—Essential oils; Perfumes
  • C11B9/0007—Aliphatic compounds
  • C11B9/0015—Aliphatic compounds containing oxygen as the only heteroatom
  • C11B9/0019—Aliphatic compounds containing oxygen as the only heteroatom carbocylic acids; Salts or esters thereof

Definitions

• the present invention refers to 3-hydroxy-4-methylalkanoic acids, 4-methylalk-3-enoic acids and their esters, and to flavor and fragrance compositions containing one or more of these compounds.
• the present invention provides in one of its aspects a flavour or fragrance composition comprising a compound of formula (I)
• R 1 is hydrogen or C 1 - C 3 alkyl, e.g. methyl, ethyl or isopropyl
• R 2 is linear or branched C 2 - C 5 alkyl, e.g. ethyl, n-propyl, n-butyl, and n-pentyl
• R 3 is hydrogen and the bond between C-3 and C-4 together with the dotted line represents a double bond wherein the double bond is of E or Z configuration; or II) R 3 is hydroxyl and the bond between C-3 and C-4 is a single bond.
• a particularly preferred composition according to the invention may comprise a compound of formula (I) selected from 3-hydroxy-4-methylhexanoic acid, 3-hydroxy-4- methylheptanoic acid, 3-hydroxy-4-methyioctanoic acid, isopropyl 3-hydroxy-4- methylhexanoate, methyl 3-hydroxy-4-methyloctanoate, ethyl 3-hydroxy-4- methylheptanoate, (E)-4-methyl-oct-3-enoic acid, (Z)-4-methyl-oct-3-enoic acid, (E)-4- methyl-non-3-enoic acid, (Z)-4-methyl-non-3-enoic acid, ethyl 4-methyl-oct-3-enoate, and methyl 4-methyl-non-3-enoate.
• formula (I) selected from 3-hydroxy-4-methylhexanoic acid, 3-hydroxy-4- methylheptanoic acid, 3-hydroxy-4-methyioctanoic
• Compounds of formula (I) may be used in combination with other known flavorant or odorant molecules selected from the extensive range of natural and synthetic molecules currently available and/or in admixture with one or more ingredients or excipients conventionally used in conjugation with odorants or flavorants in fragrance or flavor compositions, for example carrier materials, and other auxiliary agents commonly used in the art.
• ingredients are, for example, described in "Perfume and Flavor Materials of Natural Origin", S. Arctander, Ed., Elizabeth, N. J., 1960; “Perfume and Flavor Chemicals", S. Arctander, Ed., Vol. I & II, Allured Publishing Corporation, Carol Stream, USA, 1994.
• the compounds of formula (I) may be used in fragrance applications, e.g. in any field of fine and functional perfumery, such as perfumes, household products, laundry products, body care products, e.g. deodorants, and cosmetics. These compounds are particularly well suited for the creation of masculine perfumes.
• the compounds of formula (I) may be used in flavor applications and are useful in modifying for example, dairy flavors such as butter or cheese flavors, milk, beef, chicken, meat, seasonings and exotic fruit flavors, e.g. papaya, passionfruit, mango and Durian.
• dairy flavors such as butter or cheese flavors
• milk beef, chicken, meat, seasonings
• exotic fruit flavors e.g. papaya, passionfruit, mango and Durian.
• the compounds of the formula (I) may be present in compositions in amounts ranging from 1 ppm up to 30 weight %, more preferably from 1.5 ppm to about 25 weight % based on the flavor composition and about 0.1 ppb to about 1 weight %, preferably about 1 ppb to about 0.5 weight % based on the finished product, such as margarine, cooking fats, oils, bakery or soaps, yogurts, candies, chewing gum or pharmaceutical products.
• compounds of the formula (I) When used in fragrance applications, compounds of the formula (I) may be employed in amounts, for example, from about 0.0001 to about 1 weight percent.
• the preferred concentrations in the field of fine fragrance vary between about 0.001 and 0.01 weight percent.
• the values should not be limiting on the present invention, since the experienced perfumer may also achieve effects with even lower concentrations or may create novel accords with even higher amounts.
• the compounds of formula (I) wherein R 1 is hydrogen and R 2 is a linear C 2 - C 5 alkyl residue may be used for the reconstitution of axilla odor for the evaluation of deodorizing effects of odor masking compositions, such as deodorants.
• the present invention refers in a further aspect to a reconstitution of cleaved human body axilla secretion comprising a) 3-hydroxy-3-methyl hexanoic acid; b) 3-methyl-hex-2(E)-enoic acid; c) at least one compound of formula (I)
• R 1 is hydrogen
• R 3 is hydroxyl and the bond between C-3 and C-4 is a single bond; and R 2 is ethyl, n-propyl, n-butyl, or n-pentyl; or
• R 3 is hydrogen and the bond between C-3 and C-4 together with the dotted line represents a double bond wherein the double bond is of the E or Z configuration; and R 2 is n-butyl or n-pentyl; d) optionally at least one sulfur compound selected from the list of 3-sulfanylhexan-
• the reconstitution comprises about 70 to about 85 weight % of a) plus b); about 5 to 15 weight % of at least one compound of formula (I) as defined under c); up to 1 weight %, e.g. 0.1 - 1 weight %, of at least one compound as defined under d); and up to 1 weight %, e.g. 0.1 - 1 weight %, of at least one compound as defined under e).
• a diluted composition comprising about 1 to 0.1 weight % of the reconstitution may be used.
• dilution solvents such as dipropyleneglycol or ethanol are suitable.
• the present invention refers to a method of reconstituting axilla odor for the purpose of evaluation the deodorizing effect of an odor masking composition
• a method of reconstituting axilla odor for the purpose of evaluation the deodorizing effect of an odor masking composition
• substitution refers to the reproduction of a human axilla odor which is very close to the odor naturally occurring but is not necessarily exactly the same as in nature.
• the compounds of formula (I) may be synthesized from commonly available starting materials and reagents according to synthetic protocols known in the art.
• Example 1 3-Hvdroxy-4-methylhexanoic acid Under an atmosphere of nitrogen, a stirred solution of diisopropylamine (10.1 g, 0.1 mol) in tetrahydrofuran (50 ml) was cooled to 0 0 C and n-butyllithium solution (2.7 N in heptane, 27 ml, 0.1 mol) was added dropwise within 10 minutes. The resulting solution was allowed to warm to room temperature and stirring continued at this temperature for approximately 30 minutes.
• diisopropylamine 10.1 g, 0.1 mol
• tetrahydrofuran 50 ml
• n-butyllithium solution 2.7 N in heptane, 27 ml, 0.1 mol
• lithium diisopropylamide solution was then cooled to -10 0 C and a solution of acetic acid (3.0 g, 0.05 mol) in tetrahydrofuran (15 ml) was added dropwise and under vigorous stirring within 15 minutes. Subsequently, the mixture was slowly warmed to 35 0 C and kept at this temperature for 20 minutes. The resulting suspension was re-cooled to -20 0 C and a solution of 2-methyl- butyraldehyde (0.05 mol, 4.3g) was added within 10 minutes at the same temperature. The mixture was subsequently allowed to warm to room temperature and continued to stir for about 1 hour before quenching the reaction by pouring it into ice/water (250 ml).
• Odour description technical, ethereal, acid, pungent, slightly fruity.
• Odour description fruity, peach-apricot, sweaty, cuminic, slightly animalic.
• Odour description Fruity, woody, sawdust, slightly pine, slightly sweaty.
• Odour description agrestic, woody-pine, slightly cypress.
• Odor description etheral, fruity, floral.
• Sandalore ® (5-(2,2,3-trimethyl-3-cyclopentenyl)-3-methylpentan-2-ol) 35 lsobutyl quinoleine-2 (2-(2-methylpropyl)quinoline) 2
• DPG Dipropylene glycol
• Nirvanolide ((10Z)-1 S-methyloxacyclopentadec-i 0-en-2-one) 150 lrone Alpha (CAS 79-69-6) at 1 % in DPG 25
• Ethyl decanoate 5.0 delta Decalactone 0.5 gamma
• Dodecalactone 0.5 Vegetable oil qsp 1000.0

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Wood Science & Technology (AREA)
• Fats And Perfumes (AREA)
• Cosmetics (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

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• 2005
  • 2005-09-21 GB GBGB0519171.3A patent/GB0519171D0/en not_active Ceased
• 2006
  • 2006-09-15 JP JP2008531501A patent/JP2009509008A/ja active Pending
  • 2006-09-15 EP EP06775195A patent/EP1926531A2/en not_active Ceased
  • 2006-09-15 WO PCT/CH2006/000502 patent/WO2007033508A2/en not_active Ceased
  • 2006-09-15 CN CNA2006800348600A patent/CN101267860A/zh active Pending
  • 2006-09-15 BR BRPI0616151-0A patent/BRPI0616151A2/pt not_active IP Right Cessation
  • 2006-09-15 US US12/066,871 patent/US20080260670A1/en not_active Abandoned

Non-Patent Citations (2)

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