The use of triethyl phosphite and the appropriate carboxylic anhydridewas found to constitute an efficient method for the conversion of azetidinyl benzthiazolyl disulphides into acylthioazetidinones, allowing a short synthesis of penem FCE 88891 from its penam-1-oxide precursor.
已发现使用
亚磷酸三乙酯和适当的
羧酸酐构成了将氮杂
环丁烷基二
噻唑基二
硫化物转化为酰基
硫代氮杂
环丁烷酮的有效方法,从而允许从其戊-1-氧化物前体短时间合成Penem FCE 88891。