作者:Sandeep P. Modi、Meged A. Michael、Sydney Archer、James J. Carey
DOI:10.1016/s0040-4020(01)82308-5
日期:1991.8
treated with one equivalent of MeLi followed by quenching of the reaction mixture with water to give the lactone 19 Compound 19 was treated with a number of organolithium reagents such as methyllithium. n-butyllithium, ethoxyvinyl lithium and the lithio derivative of formaldehyde diethyl mercaptal to give, after sodium borohydride reduction, 1, 15, 30, and 31 respectively. Compounds 30 and 31 were hydrolyzed
描述了由酮内酰胺7合成天然产物5-甲基-6H-吡啶并[4,3-b]咔唑-11-甲醇5。化合物7用一当量的MeLi处理,然后将反应混合物用水淬灭以得到内酯19。化合物19用多种有机锂试剂例如甲基锂处理。正丁基锂,锂乙氧基乙烯基和甲醛的锂衍生物二乙基缩硫给,之后硼氢化物还原钠,1,15,30,和31分别。将化合物30和31水解,然后还原,得到化合物5和6的总产率分别为21%。化合物16和22被确定为玫瑰树碱的Saulnier-Gribble合成的中间体。