Synthesis of Chiral 3-Substituted Hexahydropyrroloindoline via Intermolecular Cyclopropanation
作者:Hao Song、Jun Yang、Wei Chen、Yong Qin
DOI:10.1021/ol062489s
日期:2006.12.1
new and efficient syntheticroute to chiral 3-substituted hexahydropyrroloindoline 18 possessing absolute configurations in accordance with indole alkaloids has been developed from readily available L-tryptophan. The key step relies on the one-pot cascade reaction of oxazolidinone 17 with diazoester, which proceeds through intermolecular cyclopropanation, ringopening, and cyclization.