N-alkenylurethane 4, the epoxy urethane ent-5, and the pyrrolidine ent-6 available from the Katsuki-Sharpless kinetic resolution of N-benzyloxycarbonyl-3-hydroxy-1-pentenylamine (2) has been elaborated (−)-supinidine (1).
The shortest synthesis of optically active Geissman-Waiss lactone, a key synthetic intermediate for necine bases
作者:Hiroki Takahata、Yasunori Banba、Takefumi Momose
DOI:10.1016/s0957-4166(00)82169-2
日期:1991.1
A short synthesis of (+)-(1R,5R)-2-oxa-6-azabicyclo[3.3.0]octan-3-one (the Geissman-Waiss lactone, 1) by palladium (II)-catalyzed intramolecular aminocarbonylation of (R)-N-benzyloxycarbonyl-3-hydroxy-4-pentenylamine (4) available from the Katsuki-Sharpless kinetic resolution of racemic 4 has been accomplished.