Synthesis of naucléfine, angustidine, angustine, (±)-13b,14-dihydro-angustine and naulafine
作者:David B. Repke、Jahangir、Robin D. Clark、Janis T. Nelson、David B. MacLean
DOI:10.1016/s0040-4020(01)80085-5
日期:1989.1
The lithio derivatives of 3-cyano-4-methylpyridines and 6,7-dihydro-5H-2-pyrindine-4-carbonitrile react with 2,9-bis-(trimethylsilyl)-3,4-dihydropyrido[3,4-b]indolium trifluoromethanesulfonate to form cyclic amidines which, upon hydrolysis and oxidation, produce the title alkaloids.
3-氰基-4-甲基吡啶和6,7-二氢-5H-2-嘧啶-4-腈的硫醇衍生物与2,9-双-(三甲基甲硅烷基)-3,4-二氢吡啶基[3,4-b]反应用三氟甲磺酸吲哚鎓形成环状am,水解和氧化后生成标题生物碱。