Total Synthesis of (−)-Stellettamide B and Determination of Its Absolute Stereochemistry
作者:Naoki Yamazaki、Wataru Dokoshi、Chihiro Kibayashi
DOI:10.1021/ol0003228
日期:2001.1.1
[figure: see text] The first total synthesis of (-)-stellettamide B has been achieved by a sequence based on amide coupling of the chiral 1-(aminomethyl)-indolizidine fragment, prepared by TiCl4-mediated asymmetric allylation of the tricyclic N-acyl-N,O-acetal, with the chiral trienoic acid fragment. This synthesis led to revision of the published relative stereochemistry of the natural product and established
[图:见正文](-)-stellettamide B的第一个全合成是通过基于手性1-(氨基甲基)-吲哚并咪唑片段的酰胺偶联的序列实现的,该序列是由TiCl4介导的三环N的不对称烯丙基化制备的-酰基-N,O-乙缩醛,带有手性三烯酸片段。该合成导致对天然产物的公开相对立体化学的修订,并将其绝对立体化学确定为1S,4S,8aR,6” R。