Isolation and Structure Determination of Echinochrome A Oxidative Degradation Products
作者:Natalia P. Mishchenko、Elena A. Vasileva、Andrey V. Gerasimenko、Valeriya P. Grigorchuk、Pavel S. Dmitrenok、Sergey A. Fedoreyev
DOI:10.3390/molecules25204778
日期:——
degradation products formed during oxidation by O2 in air-equilibrated aqueous solutions were identified, isolated, and structurally characterized. An HPLC method coupled with diode-array detection (DAD) and mass spectrometry (MS) was developed and validated to monitor the Ech A degradation process and identify the appearing compounds. Five primary oxidation products were detected and their structures were
Echinochrome A (Ech A, 1) 是几种海胆物种的主要色素之一,在俄罗斯药典中注册为活性药物物质 (Histochrome®),用于心脏病学和眼科领域。在本研究中,对空气平衡水溶液中 O2 氧化过程中形成的 Ech A 降解产物进行了鉴定、分离和结构表征。开发并验证了结合二极管阵列检测 (DAD) 和质谱 (MS) 的 HPLC 方法,用于监测 Ech A 降解过程并识别出现的化合物。检测到五种初级氧化产物,并基于高分辨率电喷雾电离质谱(HR-ESI-MS)提出了它们的结构:7-乙基-2,2,3,3,5,7,8-七羟基- 2,3-二氢-1,4-萘醌(2)、6-乙基-5,7,8-三羟基-1,2,3,4-四氢萘-1,2,3,4-四酮(3)、 2,3-环氧-7-乙基-2,3-二氢-2,3,5,6,8-五羟基-1,4-萘醌 (4), 2,3,4,5,7-五羟基-6 -乙基茚-1-酮(5)和2