申请人:Merck Patent Gesellschaft mit beschraenkter Haftung
公开号:US05180837A1
公开(公告)日:1993-01-19
The invention relates to a process for the preparation of racemic pilosinine derivatives as precursor for the alkaloid pilocarpine of pharmacological importance from a 5-formyl-1-alkylimidazole of the formula I ##STR1## in which R.sup.1 is a straight-chain or branched alkyl chain with 1-6 C atoms which, via the stage of the thioacetal, is added onto .gamma.-crotonolactone.
该发明涉及一种制备手性皮洛西宁衍生物的方法,该衍生物是药理学重要性的生物碱毛果芸香碱的前体,从式I的5-甲酰基-1-烷基咪唑中制备,其中R1是具有1-6个碳原子的直链或支链烷基链,通过硫代乙醇酸酯阶段添加到γ-巴豆内酯上。