2-Acetamidoethenylthioesters have been prepared from 4-carboxymethylazetidin-2-one and cyclised via an intramolecular Wittig reaction to provide 3-(2-acetamidoethenylthio)-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylates, closely related analogues of the naturally occurring antibiotic MM 13902 (1).
由4-羧甲基氮杂
环丁烷-2-酮制备2-乙酰
氨基
乙烯基硫代酸酯,并通过分子内Wittig反应环化以提供3-(2-乙酰
氨基
乙烯基硫代)-7-氧代-1-
氮杂双环[3.2.0]庚-2-烯-2 -
羧酸盐,与天然存在的抗生素MM 13902(1)密切相关的类似物。