First stereoselective synthesis of serinol-derived malyngamides and their 1′-epi-isomers
作者:Jie Chen、Yang Li、Xiao-Ping Cao
DOI:10.1016/j.tetasy.2006.02.027
日期:2006.3
A stereoselective synthesis of 1a N-[(1R)-2-hydroxy-1-methoxy-methyl ethyl]-(4E,7S)-7-methoxy-4-eicosenamide} has been accomplished in 10 steps from 1-tetradecanol for the first time in 28% overall yield. The key steps involved the coupling reaction of a chiral alkyne with a protected bromide in the presence of t-BuLi, as well as the amidation reaction of (4E,7S)-7-methoxyeicos-4-enoic acid with (R)-methoxyamino
从1开始的10个步骤完成了1a N -[(1 R)-2-羟基-1-甲氧基-甲基乙基]-(4 E,7 S)-7-甲氧基-4-二十碳酰胺}的立体选择性合成十四烷醇的总收率首次达到28%。关键步骤涉及在t- BuLi存在下手性炔烃与受保护的溴化物的偶合反应,以及(4 E,7 S)-7-甲氧基表面四烯酸与(R)的酰胺化反应。-甲氧基氨基醇。乙酰化1a完成1b N -[(1 S)-2-乙酰氧基-1-甲氧基-甲基乙基]-(4 E,7 S)-7-甲氧基-4-二十碳酰胺}。它们的1'-表位异构体也已经以相似的策略合成。