申请人:Eli Lilly and Company
公开号:US05097049A1
公开(公告)日:1992-03-17
Chiral epoxybutyrates are prepared in high yield from novel dihydro-3R-substituted sulfonyloxy-4R-hydroxy-2-(3H)furanones via based catalyzed alcoholysis. The product chiral epoxy butyrates are useful intermediates for the synthesis of 1-carba-1-dethia cephem antibiotics.
手性环氧丁酸酯是通过基于催化的醇解法,从新型的二氢-3R-取代磺酰氧基-4R-羟基-2-(3H)呋喃酮高产率制备而成。所得的手性环氧丁酸酯是合成1-羰基-1-脱硫头孢菌素类抗生素的有用中间体。