作者:Jerome L. Moniot、Tina M. Kravetz、Abd El Rahman H.Abd El Rahman、Maurice Shamma
DOI:10.1002/jps.2600680613
日期:1979.6
intermediate. Treatment with ammonia, methylamine, n-propylamine, aniline, and p-toluidine furnished the 8-berberinylidene derivatives IV and VII-X. Reaction of V with malononitrile, ethyl acetoacetate, and ethyl malonate anions yielded the 8-berberinylidene derivatives XII-XIV. Acid hydrolysis of XIV gave 8-berberinylacetic acid (XV) whose reduction provided 8-canadinylacetic acid (XVI). Grignard reagents
通过用三氯氧磷处理氧小(碱(I)而获得的8-氯小ber碱(V)是反应性中间体。用氨,甲胺,正丙胺,苯胺和对甲苯胺处理提供了8-小ber碱亚烷基衍生物IV和VII-X。V与丙二腈,乙酰乙酸乙酯和丙二酸乙酯阴离子反应,得到8-小ber亚烷基衍生物XII-XIV。XIV的酸水解得到8-小ber碱乙酸(XV),其还原得到8-芥子酸(XVI)。格氏试剂容易与V.甲基碘化镁,乙基碘化镁和苄基碘化镁反应,分别生成8,8-二甲基二氢小ber碱(XVII),8,8-二乙基二氢小ber碱(XIX)和苄基衍生物XX。XX的硼氢化钠还原产生了8-苄基卡丹宁(XXI)。