EP0634474A2 - Huile de labdanum traitée, procédé pour ce faire, nouveau composé cétomique, composition de parfum le comprenant - Google Patents

Huile de labdanum traitée, procédé pour ce faire, nouveau composé cétomique, composition de parfum le comprenant Download PDF

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Publication number
EP0634474A2
EP0634474A2 EP94110263A EP94110263A EP0634474A2 EP 0634474 A2 EP0634474 A2 EP 0634474A2 EP 94110263 A EP94110263 A EP 94110263A EP 94110263 A EP94110263 A EP 94110263A EP 0634474 A2 EP0634474 A2 EP 0634474A2
Authority
EP
European Patent Office
Prior art keywords
labdanum
treated
gum
perfume composition
distillation
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.)
Granted
Application number
EP94110263A
Other languages
German (de)
English (en)
Other versions
EP0634474B1 (fr
EP0634474A3 (fr
Inventor
Junko Yamamoto
Shigeyoshi Tanaka
Junji Koshino
Katsuhiko Tajima
Nao Toi
Yoshiaki Fujikura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kao Corp
Original Assignee
Kao Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP16349193A external-priority patent/JP2943038B2/ja
Priority claimed from JP16480693A external-priority patent/JP2754135B2/ja
Application filed by Kao Corp filed Critical Kao Corp
Publication of EP0634474A2 publication Critical patent/EP0634474A2/fr
Publication of EP0634474A3 publication Critical patent/EP0634474A3/fr
Application granted granted Critical
Publication of EP0634474B1 publication Critical patent/EP0634474B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • C11B9/0042—Essential oils; Perfumes compounds containing condensed hydrocarbon rings
    • 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
    • C11B9/02—Recovery or refining of essential oils from raw materials
    • C11B9/022—Refining

Definitions

  • This invention relates to a treated labdanum oil with an improved odor which is useful as a material of a perfume composition and a process for preparing the same. It also relates to a novel ketone compound having an animal and amber-like fragrance and a perfume composition containing the same.
  • Labdanum is a black and highly viscous liquid obtained from plants belonging to the genus Cistus. Labdanum, though of plant origin, has an animal and amber-like fragrance and is widely used as a natural amber material in various perfume compositions (see S. Arctander, Perfume and Flavor Chemicals and Osamu Okuda, KORYO KAGAKU SORAN).
  • Labdanum in general use includes labdanum gum obtained by boiling branches and leaves of Cistus Ladaniferus L. in water and then collecting a resin separated therefrom, labdanum gum extract obtained by removing inorganic solids from the labdanum gum, and labdanum gum distillate obtained by distillation or fractional distillation of the labdanum gum extract.
  • labdanum gum, labdanum gum extract and labdanum gum distillate not only give off an undesired crude woody note like cedarwood oil as well as an amber-like fragrance but assume a black to brown black color. Therefore, where the labdanum product is used as such as a material of perfume compositions for soaps, detergents, etc. to give its characteristic amber animal fragrance, it deteriorates the smell of the scented products due to its rough, woody odor and also colors the products.
  • An object of the present invention is to provide a treated labdanum oil which is free from the crude odor like cedarwood oil possessed by the conventional labdanum gum, labdanum gum extract and labdanum gum distillate, which has an animal and amber-like fragrance with an enhanced animal note, and which has a reduced color and a reduced viscosity.
  • Another object of the present invention is to provide a process for preparing the above-mentioned treated labdanum oil.
  • a further object of the present invention is to provide a perfume composition containing the above-mentioned treated labdanum oil.
  • a still further object of the present invention is to provide a novel perfume component, in particular, a compound having an animal and ambler-like fragrance and useful as a material for perfume compounding.
  • the present inventors have conducted extensive investigations on the components of labdanum. As a result, they have found that heat treatment of acid components contained in labdanum, such as carboxylic acids and phenols, under atmospheric pressure provides a perfume material having an enhanced animal fragrance and free from the unpleasant woody note and that the resulting heat-treated product can further be purified by distillation under specific conditions to provide a distillate with a reduced color and a reduced viscosity and containing a highly concentrated perfume component, which would be broadly applied to perfume compounding.
  • acid components contained in labdanum such as carboxylic acids and phenols
  • the present invention provides a process for preparing a treated labdanum oil which comprises:
  • the present invention further provides a treated labdanum oil obtainable by the above-mentioned process and a perfume composition containing the thus prepared treated labdanum oil.
  • the present invention furthermore provides 4-(3-methyl-3-butenyl)-4a,5,6,7,8,8a-hexahydro-3,4a,8,8-tetramethyl-2(1 H)-naphthalenone represented by formula (I): and a perfume composition containing the same.
  • step (C) may preferably be followed by step (D) in which the heat-treated acidic components obtained in step (C) are subjected to further purified by distillation, since step (D) causes further reduction in the color and viscosity, and concentration of perfume components of the resulting product.
  • the labdanum raw material which can be used in the present invention is not particularly limited but preferably includes (1) labdanum gum, which is a resin separated on boiling of a labdanum-containing plant in water, (2) labdanum gum extract obtained by removing inorganic solids from the labdanum gum, and (3) labdanum gum distillate obtained by distillation or fractional distillation of the labdanum gum extract. These raw materials may be used either individually or in combination of two or more thereof.
  • the labdanum gum is a resin separated from Cistus ladaniferus L. in boiling water, usually in an aqueous alkali solution.
  • Commercially available labdanum gum products may be used as such.
  • the labdanum gum extract is obtained by dissolving labdanum gum in an organic solvent, such as ethanol, and removing the insoluble inorganic solid content.
  • Commercially available labdanum gum extracts may be used as such.
  • the labdanum gum distillate is obtained by subjecting the labdanum gum extract to distillation or fractional distillation under conditions of, for example, a column inner temperature of 140 to 240 ° C and under a pressure of 2 Torr. All of these labdanum raw materials have an unpleasant cedarwood-like woody odor.
  • Step (a) is a step for extracting acidic components present in a labdanum raw material with an alkali.
  • the extraction is carried out through ordinary neutralization with an alkali.
  • an aqueous alkali solution is added to the labdanum raw material, followed by mixing with stirring.
  • the alkali which can be used in step (a) is not particularly limited as long as it is capable of neutralizing the acidic components of labdanum, such as carboxylic acids and phenols, to form water-soluble neutral salts. From the economical standpoint, alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal carbonates, and alkali metal hydrogencarbonates are preferred, with alkali metal hydroxides, such as sodium hydroxide and potassium hydroxide being more preferred.
  • the alkali is used in an amount of from 0.5 to 10 times equivalents, and preferably from 1.0 to 5.0 times equivalents, based on the acid equivalent of the labdanum raw material.
  • the acid equivalent of the labdanum raw material can be determined based on the acid value of the labdanum raw material.
  • the mixing with stirring is preferably carried out in the presence of an organic solvent at a temperature of from 0 to 150°C, and preferably from 50 to 100°C, for a period of from 0.1 to 5 hours, and preferably from 0.5 to 2 hours.
  • the organic solvent to be used is not particularly limited as long as it is stable under an alkaline condition. Examples of suitable organic solvents include hexane, heptane, cyclohexane, benzene, toluene, xylene, and mixtures thereof.
  • the resulting reaction mixture is subjected to phase separation in a conventional manner, whereby the organic phase is removed to separate the aqueous phase.
  • Step (B) is a step for subjecting the salts of the acidic components of the labdanum raw material to metathesis with an acid and recovering the thus released acidic components.
  • the operation is carried out by adding an acid to the aqueous alkali solution of the salts, followed by stirring to make the solution acidic, and isolating the thus released acidic components of labdanum.
  • the acid which can be used in step (b) is not particularly limited as long as it is capable of metathesizing the alkali and the like salt of a carboxylic acid, a phenol, etc., which are the acidic components of labdanum, to release the corresponding acid. From the economical viewpoint, sulfuric acid, hydrochloric acid or phosphoric acid is preferred.
  • the acid is used in an amount of from 1.0 to 5 times, preferably from 1.2 to 3 times, the equivalents of the alkali used.
  • While conditions for the above mixing and stirring are not restricted, it is preferable, taking heat generation of neutralization into consideration, that the acid is dropwise added to the salt in the presence of an organic solvent at a temperature of from 0 to 50 ° C, and particularly from 20 to 40 ° C, over a period of from 0.1 to 5 hours, and particularly from 0.3 to 1 hour, and the mixture is then stirred at a temperature of from 0 to 100°C, and particularly from 50 to 80 ° C, for a period of from 0.1 to 5 hours, and particularly from 0.5 to 2 hours.
  • the organic solvent to be used is not particularly limited as long as it is stable under an acidic condition. Examples of suitable organic solvents are hexane, heptane, cyclohexane, benzene, toluene, xylene, and mixtures thereof.
  • the excess acid can be removed by separating the reaction mixture into an aqueous layer and an organic layer in a usual manner. If desired, the organic layer is washed with water and subjected to distillation in a conventional manner.
  • Step (C) is a step for heat-treating the acidic components of labdanum recovered in step (B).
  • the heat treatment is carried out at a temperature of from 200 to 350 ° C, and preferably from 250 to 300 °C, for a period of from 0.1 to 10 hours, and preferably from 0.5 to 2 hours while stirring under atmospheric pressure, preferably in a nitrogen atmosphere to avoid generation of an offensive odor or coloring due to oxidation.
  • the resulting acidic components of labdanum is free from the rough, cedarwood-like unpleasant odor and has an enhanced animal note.
  • step (C) For the purpose of further discoloration, viscosity reduction, and concentration of perfume components, the acidic components obtained in step (C) is preferably subjected to distillation as step (D).
  • step (D) is a distillation purification step for discoloration, viscosity reduction and concentration of the heat-treated acidic components of labdanum obtained in step (C).
  • Suitable hydrocarbons include saturated hydrocarbons having a boiling point of from 260 to 400 °C, and preferably from 300 to 350 °C, at 760 mmHg or mixtures thereof, with liquid paraffin being preferred. Distillation is preferably carried out under a reduced pressure of 1 to 3 mmHg while adjusting the highest column temperature at 220 to 250 ° C.
  • the perfume composition according to the present invention comprises the thus obtained treated labdanum oil in a proportion of from 0.1 to 40 % by weight, and preferably from 0.5 to 15 % by weight.
  • Compound (I) is present in the essential oil of Cistus Ladaniferus L. (labdanum) and can be isolated, for example, from labdanum gum as follows.
  • the labdanum gum which can be used as a starting material is generally obtained by heating Cistus ladaniferus L. in a boiling aqueous alkali solution and collecting the thus released resinous component.
  • Commercially available labdanum gum products may be used as such.
  • An organic solvent such as ethyl ether, petroleum ether, methanol, ethanol, hexane or toluene
  • ethyl ether such as ethyl ether, petroleum ether, methanol, ethanol, hexane or toluene
  • the resulting extract is distilled to remove the organic solvent to obtain labdanum gum extract.
  • the acidic components of the labdanum gum extract are then extracted with an aqueous solution of an alkali, such as sodium hydroxide or potassium hydroxide.
  • the alkaline extract is neutralized with hydrochloric acid or sulfuric acid and then re-extracted with an organic solvent, such as petroleum ether, hexane or toluene.
  • This treated labdanum oil may be the aforesaid treated labdanum oil according to the present invention.
  • the treated labdanum oil is passed through a column of silica gel, for example, and developed first with an organic solvent, such as hexane, to elute hydrocarbon components and then with a mixed solvent of hexane and ethyl ether with an increasing concentration of ethyl ether.
  • the effluent is collected into fractions of an adequate amount, and fractions containing compound (I) are combined.
  • the solvent is removed from the combined fraction by distillation, and the residue is purified by high performance liquid chromatography using, for example, a hexane-ethyl acetate mixed solvent as a developing solution to obtain compound (I).
  • the thus obtained compound (I) has an animal, phenolic, and amber-like fragrance with a faint tobacco note and is useful as a material for various perfume compositions.
  • the amount of compound (I) in a perfume composition is not limited, for it varies depending on the kind of the composition and the desired fragrance, and the like. It is preferably used in an amount of from 0.1 to 10 % by weight, and particularly from 1 to 5 % by weight.
  • compounding of compound (I) and phenylethyl alcohol at a ratio of 1:60 to 1:20 or compounding of compound (I) and citronellol at a ratio of 1:5 to 1:20 or compounding of compound (I) and linalool at a ratio of 1:60 to 1:20 provides a perfume composition with enhanced freshness.
  • the perfume composition of the present invention essentially comprises the treated labdanum oil or compound (I) according to the present invention. If desired, it may contain base components and other perfume components commonly employed in general perfume composition, such as diethyl phthalate, dipropylene glycol, ethylene diglycol, and Hercolyn D (methyl dihydroabietate). It may also contain natural perfumes, such as sandalwood oil and patchouli oil, in amounts that will not impair the effect of the present invention.
  • the perfume composition of the present invention is prepared by mixing the treated labdanum oil or compound (I) and other optional components with stirring in a conventional manner.
  • the perfume composition of the present invention is applicable to a broad range of products to be scented with perfume, such as perfumes, eu de Cologne, soaps, shampoos, rinses, body shampoos, detergents, sprays, bathing preparations, deodorants, and the like.
  • a perfume composition was prepared from the components shown in Table 1 below in a conventional manner.
  • Example 2 had a leather note with an enhanced animal note as compared with the comparative composition.
  • Fraction 1 was fractionated by high performance liquid chromatography (HPLC) (hexane/ethyl ether:90/10) to obtain a fraction (160 mg) in which compound (I) was concentrated to a purity of 58 %. The fraction was further subjected to HPLC (hexane/ethyl ether:95/5) to obtain 80 mg of compound (I).
  • HPLC high performance liquid chromatography
  • a muguet-like perfume composition was prepared from the components shown in Table 2 below in a conventional manner.
  • the perfume composition of Example 4 had a muguet note with an enhanced freshness, an enhanced sweetness, and an enhanced softness as compared with the comparative composition.
  • the treated labdanum oil of the present invention is free from a cedarwood-like rough odor and has an animal and amber fragrance with an enhanced animal note. Additionally, it has a greatly reduced color, and thus, is widely applicable as a material of perfume compositions for soaps, detergents, etc.
  • Compound (I) of the present invention has an animal, ambler-like fragrance and is useful as a material of various perfume compositions.
  • the perfume composition containing compound (I) is suited to perfumes, soaps, and the like.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Fats And Perfumes (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Cosmetics (AREA)
EP19940110263 1993-07-01 1994-07-01 Huile de labdanum traitée, procédé pour ce faire, nouveau composé cétomique, composition de parfum le comprenant Expired - Lifetime EP0634474B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP163491/93 1993-07-01
JP16349193A JP2943038B2 (ja) 1993-07-01 1993-07-01 ラブダナム油の改質方法
JP164806/93 1993-07-02
JP16480693A JP2754135B2 (ja) 1993-07-02 1993-07-02 新規ケトン及びこれを含有する香料組成物

Publications (3)

Publication Number Publication Date
EP0634474A2 true EP0634474A2 (fr) 1995-01-18
EP0634474A3 EP0634474A3 (fr) 1995-09-20
EP0634474B1 EP0634474B1 (fr) 1998-12-23

Family

ID=26488912

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940110263 Expired - Lifetime EP0634474B1 (fr) 1993-07-01 1994-07-01 Huile de labdanum traitée, procédé pour ce faire, nouveau composé cétomique, composition de parfum le comprenant

Country Status (3)

Country Link
EP (1) EP0634474B1 (fr)
DE (1) DE69415424T2 (fr)
ES (1) ES2126678T3 (fr)

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
G.OHLOFF 'Riechstoffe und Geruchssinn' 1991 , SPRINGER , BERLIN pages 177-180 * the whole document * *
S.ARCTANDER 'Perfume and Flavor Materials of Natural Origin' 1960 , S.ARCTANDER , ELIZABETH,N.J. pages 326-336 * the whole document * *

Also Published As

Publication number Publication date
EP0634474B1 (fr) 1998-12-23
ES2126678T3 (es) 1999-04-01
EP0634474A3 (fr) 1995-09-20
DE69415424T2 (de) 1999-06-02
DE69415424D1 (de) 1999-02-04

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