An enantioselective synthesis of (-)-prosophylline has been accomplished in 15 steps from protected d-glyceraldehyde, with an overall yield of 9.2%, by using two enantioselective allyltitanations and a cross-metathesis reaction as the key-steps.
通过两个对映选择性烯丙基
钛化反应和一个交叉复分解反应作为关键步骤,从保护d-
甘油醛出发,经过15步反应,完成了(-)-proophylline的对映选择性合成,总产率为9.2%。