The synthesis of aspidosperma alkaloids containing a functional group at C-18; the total synthesis of (±)-N,O-diacetylcylindrocarpinol, (±)-cylindrocarine, (±)-cylindrocarpine, (±)-cylindrocarpidine, and (±)-20-allyl-20-desethyl-20-epiaspidospermine
作者:G. Lawton、J.E. Saxton、A.J. Smith
DOI:10.1016/0040-4020(77)80177-4
日期:1977.1
The first total synthesis of (±)-N,O-diacetylcylindrocarpinol 49, (±)-cylindrocarine 51, (±)-cylindrocarpidine 1, and (±)-cylindrocarpine 52, starting from pent-4-enal and proceeding via the ketones 12 and 40, is described. The stereoisomenc ketones 20 and 41 were used as intermediates in a parallel synthesis of (±)-20-allyl-20-desethyl-20-epiaspidospermine 47.
第一个全合成的(±)-N,O-二乙酰基cylindrocarpinol 49,(±)-cylindrocarine 51,(±)-cylindrocarpidine 1和(±)-cylindrocarpine 52从五元四烯醛开始并通过酮进行。描述图12和40。立体异构体酮20和41用作(±)-20-烯丙基-20-去乙基20-表哌啶子亚胺47的平行合成中的中间体。