An unambiguous and practical synthesis of Oroxylin A: a commonly misidentified flavone
作者:Hosahalli P. Hemantha、Rajendran Ramanujam、Muhammed Majeed、Kalyanam Nagabhushanam
DOI:10.1080/14786419.2019.1650359
日期:2021.5.3
published routes claiming the synthesis of Oroxylin A (1) have in fact led to a regioisomer Negletein that was misinterpreted as Oroxylin A. In the present work, we describe a novel, straight-forward and scalable semi-synthetic approach for rapid access to the title compound, the structure of which is unambiguously secured by NMR and X-ray crystallographic analysis of a derivative. This work also encompasses
摘要 木蝴蝶A,中的提取物的主要类黄酮木蝴蝶以及黄芩具有有用的药用功效。许多声称合成Oroxylin A(1)的已公开路线实际上导致了区域异构体Negletein被误解为OroxylinA。在本工作中,我们描述了一种新颖,直接且可扩展的半合成方法,可快速进行合成。获得标题化合物,其结构通过衍生物的NMR和X射线晶体学分析明确确定。这项工作还涵盖了Oroxylin A即OAGME(2)的糖基化衍生物的合成,该衍生物具有明显的药理学重要性。