Synthesis of Vicinal Aminoalcohols by Stereoselective Aza-Wacker Cyclizations: Access to (−)-Acosamine by Redox Relay
作者:Adam B. Weinstein、David P. Schuman、Zhi Xu Tan、Shannon S. Stahl
DOI:10.1002/anie.201305926
日期:2013.11.4
Diastereoselective aza‐Wacker cyclization of O‐allyl hemiaminals under aerobic conditions enables efficient access to 1,2‐aminoalcohol derivatives from allylic alcohols. The scope of this method is presented and its utility is highlighted in a streamlined synthesis of the biologically important aminosugar (−)‐acosamine. Cbz=benzyloxycarbonyl, TBDPS=tert‐butyldiphenylsilyl, TBS=tert‐butyldimethylsilyl
O-烯丙基半缩醛胺在有氧条件下的非对映选择性氮杂-瓦克环化能够有效地从烯丙醇获得1,2-氨基醇衍生物。介绍了该方法的范围,并在生物学上重要的氨基糖 (−)-阿科胺的简化合成中强调了其实用性。 Cbz=苄氧基羰基,TBDPS=叔丁基二苯基甲硅烷基,TBS=叔丁基二甲基甲硅烷基。