One-Pot Synthesis of B-Ring <i>Ortho</i>-Hydroxylated Sappanin-Type Homoisoflavonoids
作者:Galyna P. Mrug、Nataliia V. Myshko、Svitlana P. Bondarenko、Vitaliy M. Sviripa、Mykhaylo S. Frasinyuk
DOI:10.1021/acs.joc.9b00814
日期:2019.6.7
A reliable method for the synthesis of B-ring hydroxylated homoisoflavonoids and 3-hetarylmethyl chromones has been developed. The method involves an initial oxa-Diels–Alder reaction of ortho-quinone methides generated from aryl/hetaryl-substituted ortho-(N,N-dimethylaminomethyl)phenols with (2E)-3-(N,N-dimethylamino)-1-(2-hydroxyphenyl)prop-2-en-1-ones and the subsequent cascade of reactions. This
已开发出一种可靠的合成B环羟基化的异黄酮和3-杂芳基甲基色酮的方法。该方法涉及由芳基/杂芳基取代的邻-(N,N-二甲基氨基甲基)苯酚与(2 E)-3-(N,N-二甲基氨基)-1生成的邻醌醌的初始oxa-Diels-Alder反应-(2-羟基苯基)丙-2-烯-1-酮和随后的级联反应。该合成策略避免了常规的多步骤方案,并且不需要保护羟基,因此可以容易地合成天然存在的同异类黄酮的各种芳族和杂环类似物的文库。