Orthogonal Activation of Propargyl and <i>n</i>-Pentenyl Glycosides and 1,2-Orthoesters
作者:Srinivasa Rao Vidadala、Shivaji A. Thadke、Srinivas Hotha
DOI:10.1021/jo901837z
日期:2009.12.4
propargyl and n-pentenyl glycosides has been identified. According to this methodology, n-pentenyl glycosides can be selectively activated with NIS/TMSOTf in the presence of either armed or disarmed propargyl O-glycosides. In addition, we report herein that propargyl 1,2-orthoesters can be selectively activated with AuBr3 in CH2Cl2 at room temperature in the presence of n-pentenyl glycosides. Similarly
已经确定了具有炔丙基和正戊烯基糖苷的正交激活策略。根据该方法,在有或无武装的炔丙基O-糖苷存在下,可以用NIS / TMSOTf选择性地活化正戊烯基糖苷。另外,我们在本文中报道,在正戊烯基糖苷存在下,在室温下可以在CH 2 Cl 2中用AuBr 3选择性地活化炔丙基1,2-原酸酯。类似地,在炔丙基糖苷存在的情况下,戊烯基1,2-原酸酯可以被NIS / Yb(OTf)3选择性活化。