The invention comprises compounds of the general formula FORM:1028237/C2/1 wherein R1 is hydrogen, an alkyl radical of at most 5 carbon atoms or a phenyl, p-chlorophenyl or 3,4-methylenedioxyphenyl radical, R2 is hydrogen or an alkyl radical containing 1-4 carbon atoms or R2 may be bound to an alkyl radical R1 to form an alkylene radical having 2-7 chain members and 2-9 carbon atoms, and R3 represents an alkyl radical of 1-5 carbon atoms, a hydrogen atom, a monovalent cation or the normal equivalent of a polyvalent cation, and the preparation thereof either by reacting a reactive ester of 1-adamantanol with a compound of the general formula FORM:1028237/C2/2 wherein R3 is an alkyl radical and wherein R1 and R2 have the meanings given above, or a metal derivative thereof, and, if desired, hydrolysing the a -(adamant-1-yloxy)-carboxylic acid alkyl ester obtained to the free acid or to a salt, and, if desired, converting the free acid or salt into another salt with an organic or inorganic base, and, if desired, resolving a racemic acid into its antipodes, or by reacting a reactive ester of a hydroxyl compound of the last general formula above, wherein R1, R2 and R3 have the meanings given in the first general formula above, with a reactive salt of 1-adamantanol, e.g. its alkali metal salts which may be formed in situ, preferably in the absence of air. Pharmaceutical preparations having choleretic and fungistatic activity comprising a compound of the first general formula above and an inert diluent.
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