An efficient, multistep process for the synthesis of certain 6-(1-hydroxyethyl) 2-substituted penem antibiotics from 2-[4R-(triphenylmethylthio)-3S-(1R-(dimethyl-t-butylsilyloxy)ethyl)-2-azetidon-1-yl]acetic acid esters.
从 2-[4R-(三苯甲基
硫代)-3S-(1R-(二甲基-t-丁基
硅氧基)乙基)-2-氮杂
环丁烷-1-基]
乙酸酯合成某些 6-(1-羟乙基)2-取代的戊抗生素的高效、多步骤工艺。