Biological Properties and Absolute Configuration of Flavanones From Calceolariathyrsiflora Graham
作者:Ernesto Valdés、César González、Katy Díaz、Yesseny Vásquez-Martínez、Carolina Mascayano、Claudia Torrent、Francisco Cabezas、Sophia Mejias、Margarita Montoya、Marcelo Cortez-San Martín、Marcelo A. Muñoz、Pedro Joseph-Nathan、Mauricio Osorio、Lautaro Taborga
DOI:10.3389/fphar.2020.01125
日期:——
Flavanones (–)-(2S)-5,4’-dihydroxy-7-methoxyflavanone (1) and (–)-(2S)-5,3’,4’-trihydroxy-7-methoxyflavanone (2) were isolated from the extracts of Calceolariathyrsiflora Graham, an endemic perennial small shrub growing in the central zone of Chile. The absolute configuration of these compounds was resolved by optical rotation experiments and in silico calculations. Three analogs (3, 4, and 5) were synthesized
黄烷酮(–)-(2小号)-5,4'-二羟基-7-甲氧基黄酮(1)和(–)-(2小号)-5,3',4'-三羟基-7-甲氧基黄酮(2)从 钙藻锡兰Graham,一种生长于智利中部的地方性多年生小灌木。这些化合物的绝对构型通过旋光实验和在计算机上计算。合成了三个类似物(3、4和5),以与所研究的生物学方法进行构效关系。生物学测试表明,仅黄烷酮2对耐甲氧西林的菌株具有中等抑制作用小号。 金黄色MRSA 97-77(MIC值为50 µg / ml)。此外,黄烷酮2对5-hLOX表现出有效,选择性和竞争性抑制作用,这支持该植物在呼吸道疾病中作为抗炎药的传统用途。另外,2表现出对B16-F10(8.07±1.61 µM)的细胞毒性和选择性作用,但活性比依托泊苷和紫杉醇少4.6和17倍。