Synthesis of New Annellated Flavonoid Derivatives Possessing Spasmolytic Activity - VII
作者:Rahmiye Ertan、Hakan Göker、Mevlüt Ertan、Ulf Pindur
DOI:10.1002/ardp.19893220409
日期:——
7,8‐Dihydroxyflavone reacts with ethyl 2, 3‐dibromopropanoate to form the new, annellated, 1, 4‐benzodioxanes 1 containing a flavone structural unit. The regioisomers 1a and 1b thus obtained were separated and 1a was converted to the amides 2a–2f. The constitutions of 1 and 2 were elucidated by 500 MHz 1H‐NMR spectroscopy. In the spasmolysis test, 2e showed significant antagonistic effects towards
7,8-二羟基黄酮与 2, 3- 二溴丙酸乙酯反应形成新的、退火的 1, 4- 苯并二恶烷 1,其中含有黄酮结构单元。如此获得的区域异构体1a和1b被分离并且1a被转化为酰胺2a-2f。通过500 MHz 1 H NMR光谱阐明了1和2的组成。在解痉试验中,2e 对激动剂乙酰胆碱、氯化钡和组胺显示出显着的拮抗作用。