Abstract: A process for preparing 2-hydroxy-2, 5, 5, 9-tetramethyldecalyl ethanol of formula (II): ##STR1## which comprises reducing 3a, 6, 6, 9a-tetramethyldecahydro-naphto[2, 1-b]furan-2(1H)-one of formula (I): ##STR2## with an alkali metal boron hydride in the presence of a hydroxyl ether compound.

Abstract: A 2-(alkyl-cyclohexyl)-1-propanol is disclosed. The compound is represented by formula (I): ##STR1## wherein R.sub.1 and R.sub.2 individually represent a group selected from the members consisting of methyl-, ethyl-, n-propyl-, i-propyl-, t-butyl-, and sec-butyl groups, provided that the total carbon atoms of the R.sub.1 and R.sub.2 groups are 4 to 7; either R.sub.1 and R.sub.2 is a hydrogen atom, the other being a cyclohexyl group; or R.sub.1 and R.sub.2 together form a hexamethylene ring together with 2 carbon atoms in the cyclohexane ring. The compound possesses a long-lasting, woody, floral odor, and can be widely used as perfumery materials such as perfumes, soaps, shampoos, aromatic goods, and detergents.

Abstract: Disclosed is a perfumery composition comprising a 2-cyclohexylpropionic acid or its derivative represented by the following formula (I): ##STR1## wherein R is a hydrogen atom, an alkyl group having 1-4 carbon atoms, or an alkenyl group having 2-4 carbon atoms.The compounds have a wide variety of odors and a wide application as perfumery compositions such as high-grade perfumery compositions, perfumes, soaps, shampoos, rinses, detergents, cosmetics, sprays, room fragrances, and the like.

Abstract: 2-Cyclohexylpropanal derivatives are disclosed. The derivatives are represented by the following formula (I): ##STR1## wherein P is a hydrogen atom and Q represents a group --CH.dbd.N--OH or a group --CH(OR).sub.2, wherein each R represents a lower alkyl group or two R's together form a lower alkylene group which may have a lower alkyl substituent, or P and Q together form a group ##STR2## wherein R' is a lower alkyl group. The compounds possess floral, fruity, or green odors and are useful for preparing perfume compositions.

Abstract: A novel 1,1-dimethyl-3-hydroxymethylindane represented by formula (I) is disclosed. ##STR1## A perfumery composition comprising the same is also disclosed.The compound represented by formula (I) of the present invention possesses a lasting floral, fruity, herbal, and woody odor based on a rosy tone. The perfumery compositions comprising Compound (I) can widely be used as a perfurmery material for perfumes, soaps, shampoos, room flavors, detergents, and the like.

Abstract: Indane derivatives useful as fragrance-imparting components are disclosed. The represented indane derivatives by the formula (I), ##STR1## wherein ring A is a benzene or cyclohexane ring and R.sup.1 is a hydrogen atom, an alkyl group having 1-4 carbon atoms, or an alkanoyl group having 1-6 carbon atoms, provided that when ring A is benzene, R.sup.1 is a group other than hydrogen atom.

Abstract: A reformed vetiverol comprising 40% by weight or more of khusimol and 10% by weight or less of isovalencenol is disclosed. The vetiverol, containing a small amount of isovalencenol and a large amount of khusimol imparts a milder and more elegant odor than conventional vetiver oils or vetiverols. The reformed vetiverol can be prepared by a process comprising: esterifying alcohol components in a vetiver oil or a vetiverol, heating the esterified vetiver oil or a vetiverol to thermally decompose isovalencenol esters, hydrolyzing the remaining esters into alcohols, and separating the formed alcohols.

Abstract: A perfume base composition containing 2-cyclohexylpropanal is disclosed. 2-Cyclohexylpropanal can be prepared by subjecting 2-cyclohexylpropanol to liquid-phase dehydrogenation.

Abstract: The invention provides derivatives of bornane-3-spiro-1'-cyclopentane with woody note scent useful as a base component in perfumery formulations which comprises those having a substituting group selected from a methoxyl, ethoxyl, formyloxyl and acetoxyl groups or two of substituting groups being either a hydroxyl group and a methyl group or a hydroxyl group and an ethyl group at the 2-position synthesized by any of the reactions of borane-3-spiro-1'-cyclopentan-2--ol or bornane-3-spiro-1'-cyclopentan-2-one with any of the reagents selected in accordance with the substituting group(s) to be introduced.The invention also provides perfumery compositions containing the above.

Abstract: Novel bornane-3-spiro-1'-cylopentane derivatives of the following formula (I) ##STR1## in which R.sub.1 and R.sub.2 are defined such that when R.sub.1 is a hydrogen atom, R.sub.2 is a hydroxyl group, or R.sub.1 and R.sub.2 are joined to form a ketone are obtained from camphor.The derivatives are synthesized in a simple process from an economical starting material, camphor. The derivatives have woody-note and can be widely used in perfumes, soaps, shampoos, hair rinses, cosmetics and the like.

Abstract: Novel cycloalkan-1-ol derivatives having a formula (I): ##STR1## wherein R represents a hydrogen atom, lower alkyl group or an allyl group, and n is an integer of 3 or 4 provided that when n is 3, R is not a hydrogen atom or lower alkyl group, have a woody, green and earthy odor and may be prepared according to one of the following reaction formulae: ##STR2## where R.sub.1 represents a lower alkyl group or allyl group, M represents MgX or lithium atom, n is a value of 3 or 4, and X represents a halogen atom. ##STR3## The derivatives (I) may be blended with other perfumes to give perfume compositions and thus obtained compositions can be widely applied to various articles which require aromatizing such as perfumes, soaps, shampoos, hair rinses, cosmetics, hair sprays and the like.

Abstract: Fragrant cyclohexanol derivatives are produced by condensing 2-ethylidene-5-norbornene with a phenol compound, in the presence of a Friedel-Crafts catalyst; and hydrogenating the condensation product in the presence of a metal catalyst.The compounds so produced have a green-floral odor and are advantageously used in soaps, detergents, shampoos, hair rinse, cosmetics, colognes and perfumes.

Abstract: An advantageous process for producing tricyclo[5.2.1.0.sup.2,6 ]decane-2-carboxylic acid which is useful as a perfume composition.According to the invention, tricyclo[5.2.1.0.sup.2,6 ]dec-8-yl formate (II) is contacted with an inorganic strongly acidic catalyst to obtain tricyclo[5.2.1.0.sup.2,6 ]decane-2-carboxylic acid (I).

Abstract: An industrially advantageous process for producing 4-homoisotwistane-3-carboxylic acid.According to the invention, tricyclo[5.2.1.0.sup.2,6 ]dec-8-yl-methylformate (II) is contacted with an inorganic strongly acidic catalyst to obtain 4-homoisotwistane-3-carboxylic acid (I).

Abstract: Tricyclic carboxylic acid esters having the formula: ##STR1## wherein R is an alkyl group of 2 or 3 carbon atoms. These compounds have a woody fragrance and are useful as components of perfume compositions.

Abstract: Use of the compound methyl tricyclo[5.2.1.0.sup.2,6 ]decane-2-carboxylate in a perfume composition provides a herbal note or essence to the composition.

Abstract: 1-Aminomethyltricyclo[4.3.1.1.sup.2,5 ]undecane having the formula (I) and acid-addition salts thereof possess an excellent inhibitory effect on the growth of viruses even at a low concentration.

Abstract: Tricyclo[4.3.1.1.sup.2,5 ]undecane-1-carboxylic acid and acid halides and esters thereof having the formula (I), ##STR1## wherein Y represents a hydroxy group, a chlorine or bromine atom, or an alkoxy group of the formula RO- wherein R is a straight-chain, branched-chain or cyclic alkyl group having 1 to 12 carbon atoms, include compounds which exhibit superior antiviral action.

Abstract: A process for the hydride transfer reduction rearrangement of tricyclo[6.2.1.0.sup.2,6 ]undeca-2(6)-ene having the formula (I): ##STR1## by subjecting tricyclo[6.2.1.0.sup.2,6 ]undeca-2(6)-ene having the formula (I) to rearrangement with concentrated sulfuric acid in the presence of a hydride source to convert it to 4-homoisotwistane (tricyclo[5.3.1.0.sup.

Abstract: 1-Halogenotricyclo [4.3.1.1.sup.2,5 ] undecanes are prepared by reacting tricyclo [4.3.1.1.sup.2,5 ] undecane with bromine or by reacting tricyclo [4.3.1.1.sup.2,5 ] undecane-1-ol with thionyl halide. The compounds are useful intermediates for preparing 1-aminotricyclo [4.3.1.1.sup.2,5 ] undecane hydrochloride which has antiviral activity.