Improvements in corticosteroid 21-acetoxy-17α-hydroxy-16α-methyl-pregna-1,4,9(11)-triene-3,20-dione synthesis and its use as common intermediate in the synthesis of some impurities related to dexamethasone and mometasone
作者:Saibal Kumar Das、Manoj Kumar Dubey、Ravinder Buchhikonda
DOI:10.1016/j.steroids.2019.04.008
日期:2019.8
There are quite substantial number of impurities related to dexamethasone or mometasone which cannot be made from respective Active Pharmaceutical Ingredients but from common intermediate 21-acetoxy-17α-hydroxy-16α-methyl-pregna-1,4,9(11)-triene-3,20-dione (12). As such, a robust and economical synthesis of this key intermediate is important for delivering a resilient and economically viable supply
与地塞米松或莫米松有关的杂质相当多,这些杂质不能由相应的活性药物成分制成,而只能由常见的中间体21-乙酰氧基-17α-羟基-16α-甲基-孕烯-1,4,9(11)-三烯- 3,20-二酮(12)。这样,该关键中间体的稳健而经济的合成对于为这些杂质提供有弹性且经济可行的供应链至关重要。因此,至关重要的是要有一个健壮且经济可行的方法来以良好的产率和质量合成中间体12。我们在这里报告了从这种常见中间体中合成的12种和8种与地塞米松和莫米松有关的杂质的改进方法。