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The method of obtaining derivatives of biphenyl or their salts, or racemates, or optically active antipodes
The method of obtaining derivatives of biphenyl or their salts, or racemates, or optically active antipodes
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机译:获得联苯衍生物或其盐,外消旋物或旋光对映体的衍生物的方法
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1411495 3 - (Fluoro - 4 - biphenylyl) - 3- hydroxy - butyric acids and derivatives thereof DR KARL THOMAE GmbH 16 Aug 1973 [17 Aug 1972] 38843/73 Heading C2C The invention comprises compounds of the formula wherein R 1 is F in the 21- or 4SP1/SP-position, B is OH, alkoxy or a group in which R 2 and R 3 are H, -CH 2 COOH, (C 1 -C 5 )alkyl or phenyl optionally substituted by OH or CH 3 , and where B is OH, the salts of thereof with inorganic or organic bases. Compounds in which B is alkoxy may be obtained by reacting a compound of the formula with the Zn compound of an appropriate haloacetate ester in the presence of an organic solvent. Compounds in which B is OH and salts thereof may be obtained by saponification of compounds of Formula I in which B is alkoxy with an alkali or a strong acid and liberating the free acids from salts thereof by acidification with a mineral acid. Compounds in which B is may be obtained by reacting compounds of Formula I in which B is alkoxy or compounds in which said alkoxy group is replaced by a halogen atom, with an amine of the formula Examples are given for the production of the compounds. The compounds of Formula I have antiphlogistic activity and may be administered orally, rectally or parenterally in conventional forms.
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