NOVEL THIOPHENE DERIVATIVES, PREPARATION METHOD THEREOF AND PHARMACEUTICAL COMPOSITIONS CONTAINING SAME
Thiophene-2-carboxylic acid amide and ester derivatives (I) are new. Thiophene-2-carboxylic acid amide and ester derivatives of formula (I) and their isomers and acid or base addition salts are new. X = O or S; Y = O, NH or N(alkyl); Ra = H, halo, 1-3C alkyl, OH or 1-3C alkoxy; Rb = H, halo or 1-3C...
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Format: | Patent |
Sprache: | eng |
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