1.
Org Lett
; 3(20): 3125-7, 2001 Oct 04.
Article
in English
| MEDLINE
| ID: mdl-11574011
ABSTRACT
[reaction: see text] The pharmacologically important tetracyclic berbane and pentacyclic alloyohimbane structures were prepared efficiently in four steps including a stereoselective 6-exo radical cyclization using xanthates as the radical source.
Subject(s)
Berberine Alkaloids/chemical synthesis , Secologanin Tryptamine Alkaloids/chemical synthesis , Stereoisomerism
2.
