A series of structurally diverse unsaturated sugar-derived lactones has been prepared. α,β-Butenolides were introduced to the sugar moiety starting from epoxides, while α-methylene-γ-lactones were constructed from a carbonyl precursor, either an aldehyde, a ketone or a lactone. In the last case, an unprecedented Reformatsky-type reaction has been developed.
已经制备了一系列结构多样的不饱和糖衍生的内酯。从
环氧化物开始将α,β-
丁烯内酯引入糖部分,而由羰基前体(醛,酮或内酯)构建α-亚甲基-γ-内酯。在最后一种情况下,开发了前所未有的Reformatsky型反应。