Reactions of thebaine and 6-demethoxythebaine anions with carbonyl compounds; novel Diels-Alder adducts from 5β-substituted thebaines (chemistry of opium alkaloids, Part XXXIX)
作者:R. H. Woudenberg、T. S. Lie、L. Maat
DOI:10.1002/recl.19931121008
日期:——
anions of thebaine and 6-demethoxythebaine with 2-propanone gave the 5β-(dimethylmethanol)-substituted analogues 3 and 5 and the isomeric C-7-substituted morphinan-5,8-dienes 4, 6 and 7, respectively. No reaction took place with methanal. Therefore, thebaine-5β-methanol (10) was prepared by reacting the anion with alkyl chloroformate followed by lithium aluminium hydride reduction. Diels-Alder reaction