6-(benzazepine-6-yl) benzoic acid salts-intermediates for - rheadan alkaloids

摘要

Title cpds. of formula (Ie, where X is a cation, R1 and R2 = (1-4C) O-alkyl or R1 + R2 = (1-4C) alkylenedioxy, R3 = H or (1-4C) O-alkyl, R4 = (1-4C) alkyl R5 = (1-4C) alkyl and R6 and R7 = (1-4C) alkyl or R6 + R7 = (1-4C) alkylene are inters for pharm. active rheadan alkaloids (I) are prepd. by base catalysed cyclisation of the novel inters. IIA and IIB.