Synthesis of Tetracyclic Heterocompounds as Selective Estrogen Receptor Modulators. Part 1. Process Development for Scale-up of 2,5,8-Substituted 5,11-Dihydrochromeno[4,3-<i>c</i>]chromene Derivatives
作者:Xun Li、Michael Reuman、Ronald K. Russell、Richard Adams、Robert Ma、Sandra Beish,、Shawn Branum、Scott Youells、Jerry Roberts、Nareshkumar Jain、Ramesh Kanojia、Zhihua Sui
DOI:10.1021/op700020f
日期:2007.5.1
compounds are novel selective estrogen receptor modulators (SERMs). A reproducible and nonchromatographic process was developed to prepare multihundred gram quantities of 5-(4-(2-(piperidin-1-yl)ethoxy)phenyl)-5,11-dihydrochromeno[4,3-c]chromene-2,8-diyl-bis(2,2-dimethylpropanoate) (14). The overall yield of this 11-step synthesis was improved from 0.17% to 7.1% after three scale-up campaigns.
不对称的苯并吡喃并苯并吡喃化合物是新型的选择性雌激素受体调节剂(SERM)。开发了一种可重现的非色谱方法,以制备数百克数量的5-(4-(2-(2-哌啶-1-基)乙氧基)苯基)-5,11-二氢苯并[4,3 - c ]苯二甲基-2,8 -二基-双(2,2-二甲基丙酸酯)(14)。经过三个扩大规模的推广活动后,该11步合成的总产率从0.17%提高到7.1%。