First total synthesis of (±)-epocarbazolin A and epocarbazolin B, and asymmetric synthesis of (−)-epocarbazolin A via Shi epoxidation
作者:Jan Knöll、Hans-Joachim Knölker
DOI:10.1016/j.tetlet.2006.06.095
日期:2006.8
Epoxidation of the trisilyl-protected carbazomadurins A and B with dimethyldioxirane followed by desilylation provides a simple route to racemic epocarbazolin A and a non-diastereo selective access to epocarbazolin B. The Shi epoxidation has been applied to an asymmetric synthesis of the non-natural (-)-epocarbazolin A. (c) 2006 Elsevier Ltd. All rights reserved.