作者:Dieter Enders、Thomas Hundertmark
DOI:10.1002/(sici)1099-0690(199904)1999:4<751::aid-ejoc751>3.0.co;2-r
日期:1999.4
The asymmetric synthesis of (+)-streptenol A was carried out in ten steps and with high enantioselectivity (ee ≥ 96%). The key steps are the α-alkylation of 2,2-dimethyl-1,3-dioxan-5-one RAMP hydrazone A (1), subsequent deoxygenation and elaboration of the side chain via aldehyde B to furnish (+)-streptenol A in 23% overall yield. In analogy, the enantiomer (–)-streptenol A was synthesized using the
(+)-链烯醇 A 的不对称合成分十步进行,具有高对映选择性(ee ≥ 96%)。关键步骤是 2,2-二甲基-1,3-二恶烷-5-one RAMP 腙 A (1) 的 α-烷基化,随后通过醛 B 脱氧和加工侧链以提供 (+)-链烯醇 A总产率为 23%。类似地,使用相应的 SAMP 腙以 18% 的总产率合成对映异构体 (-)-链烯醇 A。