Pharmaceutical compositions comprising racemic or optically active berbane derivatives of the general Formula VI
wherein
R' and R2 each stands for an alkyl group having 1-4 carbon atoms or
R' and R2 together form a methylenedioxy group and pharmaceutically acceptable salts thereof.
These derivatives have hypotensive activity, and the compounds in which R' and R2 are C2-4 alkyl or methylenedioxy are new.
The compounds of the general Formula VI are prepared by reacting a racemic or optically active compounds of the general Formula VII
with trimethoxy-benzoic acid or a derivative - preferably a salt - thereof and isolating the compound of the general Formula VI thus obtained and if desired converting a base produced into a salt thereof or liberating the free base from a salt.
药物组合物包含外消旋的或具有光学活性的通式VI的
小檗碱衍
生物,其中R'和R2各自代表具有1-4个碳原子的烷基或R'和R2共同形成亚甲二氧基及其药学上可接受的盐。 这些衍
生物具有降血压活性,其中R'和R2为C2-4烷基或亚甲二氧基的化合物是新型化合物。 通式VI化合物的制备方法是将外消旋的或具有光学活性的通式VII化合物与三
甲氧基苯甲酸或其衍
生物--最好是盐--反应,并分离由此获得的通式VI化合物,如果需要,将生成的碱转化为盐,或从盐中释放游离碱。