Diels-Alder adducts of 1-benzenesulfonylindole-2-acrylates and 1-(alkoxycarbonyl)-1,2-dihydropyridines. Intermediates for synthesis of iboga alkaloid analogs
作者:Richard J. Sundberg、Jonathan D. Bloom
DOI:10.1021/jo00337a003
日期:1981.11
Synthesis and oxidative fragmentation of catharanthine analogs. Comparison to the fragmentation — Coupling of catharanthine and vindoline
Two new analogs of catharanthine have been synthesized in racemic form. They differ from catharanthine in the fusion of the indole ring to the non-aromatic portion of the iboga skeleton, with the [2,3] fusion present in catharanthine being replaced by [2,1] and [3,2] fusions. The corresponding deethyl analogs were also prepared and methodological improvements were applied to an existing synthesis of