作者:S. Walia、S.K. Kulshrestha、S.K. Mukherjee
DOI:10.1016/s0040-4020(01)82062-7
日期:1986.1
photooxidation of latifolin() and dihydrolatifolin () gave novel xanthan derivatives() and () involving a crucial step of photooxidative demethylation followed by cyclisation. Similar reaction of the closely related propane gave, interestingly the benzofuran .The propene . lacking free hydroxyl or double bond, gave only the quinone indicating that quinones are intermediates in the above oxidations. The allyl alcohol
Latifolin(),是唯一的光合二-Π-甲烷重排产物,得到的反式1-(2,4-二甲氧基-3-羟基苯基)-2-(2-羟基苯基)环丙烷的主要成分。相反,其更简单的类似物3-(2,4,5-三甲氧基苯基)-3-苯基丙-1-烯()和3-(2,4-二甲氧基苯基)-3-苯基丙-1-烯() ,得到1:1的顺式和反式环丙烷混合物。染料敏化的latifolin()和dihydrolatifolin()的光氧化反应产生了新的黄原衍生物()和(),涉及光氧化脱甲基和环化的关键步骤。密切相关的丙烷的类似反应产生了有趣的苯并呋喃。。缺乏游离羟基或双键,仅给出醌,表明醌是上述氧化的中间体。烯丙醇。具有相似特征的化合物经历氧化反应生成相应的醛和二苯甲酮,而不生成醌。