申请人:Pfizer Inc.
公开号:US04619783A1
公开(公告)日:1986-10-28
Certain substituted-2-penem-3-carboxylic acid compounds, and pharmaceutically-acceptable salts thereof, can be prepared from the appropriate xanthate or trithiocarbonate by desulfurization, followed by halogenation and ring closure. The corresponding desulfurized and halogenated intermediates are disclosed.
某些取代的-2-青霉烷-3-羧酸化合物及其药用可接受的盐可以通过相应的硫代硫酸盐或三硫代碳酸酯经过脱硫,随后进行卤素化和环合反应来制备。相应的脱硫和卤素化中间体已被公开。