The development of β-selective glycosylation reactions with benzyl substituted 2-deoxy-1,4-dithio-D-<i>erythro</i>-pentofuranosides: enabling practical multi-gram syntheses of 4'-Thio-2'-deoxycytidine (T-dCyd) and 5-aza-4’-thio-2’-deoxycytidine (aza-T-dCyd) to support clinical development
作者:Donn G. Wishka、Omar D. Lopez、Vladimir F. Rudchenko、Guangfei Huang、Robert Bahde、Vineet Kumar、Sergiy M. Denysenko、Lianhao Zhang、Mianji Zhang、Beverly A. Teicher、Joel Morris
DOI:10.1080/15257770.2020.1832694
日期:2021.1.2
perform direct β-selective glycosylation reactions with 2-deoxy-1,4-dithio-D-erythro-pentofuranosides has long been a significant stumbling block for the multi-gram synthesis of 4’-thio-2’-deoxy nucleosides. In addition, previously reported methods for the preparation of appropriately substituted 2-deoxy-1,4-dithio-D-erythro-pentofuranosides have proven problematic for large scale synthesis. To address
摘要 长期以来,缺乏与 2-deoxy-1,4-dithio-D-erythro-pentofuranosides 进行直接 β-选择性糖基化反应的有效方法一直是多克合成 4'-thio-2 的重要障碍。 '-脱氧核苷。此外,先前报道的制备适当取代的 2-deoxy-1,4-dithio-D-erythro-pentofuranosides 的方法已证明对大规模合成存在问题。为了解决这些问题,我们在本文中描述了对先前报道的方法的修改和优化,以方便地大规模合成苄基取代的 2-脱氧-1,4-二硫代-D-赤型-戊呋喃糖苷。此外,我们描述了苄基取代的 2-deoxy-1 的 β-选择性糖基化反应的反应条件的发展,4-dithio-D-erythro-pentofuranosides 与 N4-benzoylcytosine 和 5-aza-cytosine,使临床候选物 4'-thio-2'-deoxycytidine