1.METHODS Balsalazide disodium was synthesized by reactions of condensation , reduction, diazotization , coupling and salification from 4-nitrobenzoyl chloride.
方法以对硝基苯甲酰氯为起始原料,经缩合、还原、重氮化、偶合、盐等反应制得巴柳氮二。
2.METHODS Terazosin hydrochloride was synthesized from anhydro-piperazine via acylation,reduction,amination,salification etc.