Unconventional Synthetic Process of Fasudil Hydrochloride: Costly Homopiperazine Was Avoided
作者:Jianhong Zhao、Dingding Wang、Wu-Lin Yang、Jinming Niu、Weiting Wu
DOI:10.1021/acs.oprd.1c00211
日期:2022.1.21
cyclization, and salification. The process afforded 1 in 67.1% overall yield (based on 5-isoquinoline sulfonyl chloride) with 99.94% purity. Compared to the earlier published methodologies, the use of homopiperazine or its derivatives as intermediates was avoided. The salient features of this environmentally friendly synthetic route include easily available starting materials and operational simplicity, which
开发了一种高效、稳健且具有成本效益的法舒地尔盐酸盐1合成工艺。以易得的乙二胺和5-异喹啉磺酰氯为原料,通过磺酰胺化、保护、亲核取代、脱保护、环化和成盐六步反应制备目标产物1 。该过程提供了1总产率为 67.1%(基于 5-异喹啉磺酰氯),纯度为 99.94%。与早期公布的方法相比,避免使用高哌嗪或其衍生物作为中间体。这种环保合成路线的显着特点是原料易得、操作简单,适合大规模工业化生产。