The allene–diyne natural product nemotin was synthesized for the first time through an enantioselective route with the stereogenic center at the lactone moiety derived from L-glutamic acid and the allene axis constructed from the corresponding propargylic tosylate, and the absolute configuration was thus established as (4S,5aS).
通过对映体选择性路线首次合成了烯二元
天然产物奈莫汀,其内酯分子上的立体中心来自
L-谷氨酸,而烯轴则由相应的
丙炔基甲
苯磺酸盐构建而成,因此其绝对构型被确定为 (4S,5aS)。