Total Synthesis of (+)-Papuamine: An Antifungal Pentacyclic Alkaloid from a Marine Sponge, <i>Haliclona </i>sp.
作者:Anthony G. M. Barrett、Mark L. Boys、Terri L. Boehm
DOI:10.1021/jo951413z
日期:1996.1.1
The total synthesis of (+)-papuamine, the antipode of the C(2)-symmetric, optically active, pentacyclic diamine natural product, starting from a chiral diol is described. The diol is available via an asymmetric Diels-Alder reaction between 1,3-butadiene and di-(-)-menthyl fumarate. The key transformation in the synthesis is an intramolecular Pd(0)-catalyzed (Stille) coupling reaction to form the central
描述了从手性二醇开始的(+)-巴布胺(C(2)-对称,旋光性,五环二胺天然产物的对映体)的总合成。二醇可通过1,3-丁二烯与富马酸二(-)-薄荷基酯之间的不对称Diels-Alder反应获得。合成中的关键转变是分子内Pd(0)催化的(Stille)偶联反应,以形成中心的13元二氮杂二烯大环。