Synthesis of lysergic acid derivatives by triple radical cyclisation
作者:David E. Cladingboel、Philip J. Parsons
DOI:10.1039/c39900001543
日期:——
The lysergicacid ring system, characteristic of the ergot alkaloids, is constructed from 2-bromoaniline derivatives by tripleradicalcyclisation, initiated with tri-n-butyltin hydride; formation of a 6- rather than a 5-membered D ring is controlled by a terminal phenylthio group.