Studies on antianaphylactic agents. 6. Synthesis of some metabolites of 6-ethyl-3-(1H-tetrazol-5-yl)chromone and their analogs
作者:Akira Nohara、Hisashi Kuriki、Toshihiro Ishiguro、Taketoshi Saijo、Kiyoshi Ukawa、Yoshitaka Maki、Yasushi Sanno
DOI:10.1021/jm00189a014
日期:1979.3
NMR, mass spectra, and TLC of isomeric compounds. In 13C NMR spectra, the shift difference of the tetrazole ring carbons between a pair of isomers was more remarkable than that of the glycosidic carbons. Therefore, the former is a useful criterion for distinguishing between such isomers. Some of the metabolities and analogues were active when administered intravenously, and two metabolites (2 and 3)
口服有效的抗过敏药6-乙基-3-(1H-四唑-5-基)色酮(AA-344)(1)的代谢物及其类似物经合成以确认拟议的结构并确定其活性大鼠被动皮肤过敏反应(PCA)测试。通过13C NMR的比较,将葡萄糖醛酸代谢物(6)分配为结构24b,即1-脱氧-1- [5-(6-乙基色氨酸-3-基)四唑-1-基]-β-D-吡喃葡萄糖醛酸酯,异构体化合物的质谱图和TLC。在13C NMR光谱中,一对异构体之间的四唑环碳的位移差异比糖苷碳的位移差异更显着。因此,前者是区分这些异构体的有用标准。静脉内给药时,某些代谢产物和类似物具有活性,