Identification and Synthesis of Impurities in Pinocembrin-A New Drug for the Treatment of Ischemic Stroke
作者:Qingyun Yang、Yuanfeng Tong、Feng Chen、Yan Qi、Wei Li、Song Wu
DOI:10.1002/cjoc.201200201
日期:2012.6
structures were identified as 5,7‐dihydroxy‐2‐phenyl‐4H‐1‐benzopyran‐4‐one (2), 3‐phenyl‐1‐(2,4,6‐trihydroxyphenyl)‐1‐propanone (3), 5,7‐dihydroxy‐2‐cyclohexyl‐4H‐1‐benzopyran‐4‐one (4), and 2,3‐dihydro‐5,7‐dihydroxy‐2‐cyclohexyl‐4H‐1‐benzopyran‐4‐one (5), respectively. All of the impurities were side products of excessive hydrogenation of the target product 1 or the starting material 2 in the course
通过HPLC-UV-MS分析,光谱学证据和化学合成方法分析和鉴定了皮诺贝恩(1)(一种治疗缺血性中风的新药)中的四种微量杂质。它们的化学结构被鉴定为5,7-二羟基-2-苯基-4 H -1-苯并吡喃-4-酮(2),3-苯基-1-(2,4,6-三羟基苯基)-1-丙酮(3),5,7-二羟基-2-环己基-4 H -1-苯并吡喃-4-1(4)和2,3-二氢-5,7-二羟基-2-环己基-4 H -1-苯并吡喃‐4‐1(5)。所有杂质都是目标产物1或原料2过度氢化的副产物。在合成过程中,5是新化合物。