名称:
Synthesis of 5α,8α-ethanoergosta-2,6,22-triene-2′β-hydroxymethylene-1′β-carboxylic acid lactone, a key intermediate for the synthesis of a brassinolide analogue
摘要:
Metal hydride reduction of the 5 alpha,8 alpha-ethanoergosta-2,6,22-triene-1'beta,2'beta-dicarboxylic acid anhydride prepared by a new route afforded in prevalence the corresponding 4'-lactone, a known steroidal intermediate affording a brassinolide congener by hydroxylation with osmium tetraoxide. (C) 1998 Elsevier Science Ireland Ltd. All rights reserved.