Three′s a crowd: The title reaction provides a tetracylic core bearing three chiral centers (see scheme; Ts=4‐toluenesulfonyl) with excellent enantioselectivity and good diastereoselectivity. The reaction was used to efficiently construct the (+)‐kreysiginine skeleton.
3's人群:标题反应提供了一个带有三个手性中心的四环核(见方案; Ts = 4-
甲苯磺酰基),具有出色的对映选择性和良好的非对映选择性。该反应用于有效构建(+)-克雷西
丁胺骨架。