| 摘要 |
<p>Benzofuran derivs. of formula (I) and their salts are new: R1 = OH, halogen, 2-7C alkanoyloxy, aroyloxy, 4-6C alkylsulphonyloxy, (1-6C alkoxy)carbonyloxy, aryloxycarbonyloxy or mono- or di(1-6C alkyl)carbamoyloxy; R2 = aryl, 3-6C cycloalkyl or 4-hydroxycyclohexyl;l R3 = O(CH2)2 or O(CH2)3; R4, R5 = n-butyryl, n-valeryl or 1-6C alkyl, or NR4R5 = piperidino, morpholino, pyrrolidino, 3-methylpyrrolidino, 3,3-dimethylpyrrolidino, 3,4-dimethylpyrrolidino, azepino or pipecolino; R6 = C=CHR, CHR' or C(OH)R'; R = H or 1-5C alkyl and R' = 1-5C alkyl, 2-5C alkenyl or aryl.</p> |
