作者:Tuyen Nguyen Van、Norbert De Kimpe
DOI:10.1016/s0040-4020(00)00702-x
日期:2000.9
Two new short syntheses of the alkaloid polonicumtoxin C (3) are presented. In the first pathway, polonicumtoxin C was obtained in two steps by alkylation of 6-methyl-2,3,4,5-tetrahydropyridine with E-4-bromo-3-methyl-1-(tetrahydro-2-pyranyloxy)-2-butene 7 and subsequent deprotection of the THP group. In the second pathway, the cyclic ketimine was constructed via a short sequence of reactions involving
提出了两种新的生物碱polonicumtoxin C(3)的短合成。在第一个途径中,分两步获得polonicumtoxin C,方法是将6-甲基-2,3,4,5-四氢吡啶与E -4-溴-3-甲基-1-(四氢-2-吡喃基氧基)-2烷基化-丁烯7和随后的THP基团脱保护。在第二种途径中,通过短序列的反应构建环状酮亚胺,该反应包括(a)将N-(异亚丙基)异丙胺与N,N-二甲硅烷基保护的ω-溴丙胺和E -4-溴-3-甲基-进行连续烷基化1-(四氢-2-吡喃氧基)-2-丁烯7,(b)氨基转移和脱保护,后两个反应一步发生。