Cyclizations of unsymmetrical bis-1,2-(3-indolyl)ethanes: Synthesis of (−)-tjipanazole F1
作者:Eric J. Gilbert、Joseph W. Ziller、David L. Van Vranken
DOI:10.1016/s0040-4020(97)01036-3
日期:1997.12
The intramolecular dimerization of unsymmetrical bis-1,2-(3-indolyl)ethanes could be controlled using either thermodynamic reaction conditions (neat trifluoroacetic acid) or kinetic conditions (2 equiv acid/chloroform). This control of regiochemistry has been applied to an efficient synthesis of (−)-tjipanazole F1.