Reduction of a series of substituted flavanones afforded synthetic access to flavan-4-ols and was followed for some of them by an SN2-type acid-catalysis in methanol to provide 4-methoxyflavans. The stereochemistry of these compounds was established by 1H and 13C NMR data. Flavan-4-ols and 4-methoxyflavans have been resolved into enantiomers which are being evaluated as anticancer drugs.
一系列得到合成获得黄烷-4-醇和取代的黄烷酮的还原,随后进行由S它们中的一些Ñ在甲醇2类型的酸催化,以提供4- methoxyflavans。这些化合物的立体化学由1 H和13 C NMR数据确定。黄烷-4-醇和4-甲氧基黄烷已被解析为对映体,其被评估为抗癌药。
An efficient synthesis of novel tetrahydrochromeno[2,3-b]chromenes
作者:Ruth Devakaram、David StC. Black、Naresh Kumar
DOI:10.1016/j.tetlet.2010.05.025
日期:2010.7
A series of novel tetrahydrochromeno[2,3-b]chromenes is synthesized via the acid-catalyzed dimerization reactions of 5-methoxy- or 6-methoxyflavenes. A rational mechanism for the observed rearrangement is proposed. (C) 2010 Elsevier Ltd. All rights reserved.
US2023/159482
申请人:——
公开号:——
公开(公告)日:——
Synthesis and antiplasmodial evaluation of novel chromeno[2,3-b]chromene derivatives
作者:Ruth Devakaram、David StC. Black、Vanida Choomuenwai、Rohan A. Davis、Naresh Kumar
DOI:10.1016/j.bmc.2011.12.037
日期:2012.2
5-Methoxyflavenes and 6-methoxyflavenes were found to undergo stereoselective acid-catalyzed rearrangement to generate a range of novel chromeno[2,3-b]chromene derivatives. When subjected to an in vitro antiplasmodial growth inhibition assay using Plasmodium falciparum (3D7 line) the chromene analogues were shown to display IC50 values ranging from 6.8 to 39.8 μM.
发现5-甲氧基黄酮和6-甲氧基黄酮经历了立体选择性酸催化的重排,以产生一系列新颖的色酚[2,3- b ]色烯衍生物。当使用恶性疟原虫(3D7品系)进行体外抗血浆生长抑制试验时,色烯类似物显示出的IC 50值为6.8至39.8μM。