Synthesis of 1,5-Dideoxy-1,5-iminoribitol <i>C</i>-Glycosides through a Nitrone–Olefin Cycloaddition Domino Strategy: Identification of Pharmacological Chaperones of Mutant Human Lysosomal β-Galactosidase
作者:Aloysius Siriwardena、Dhiraj P. Sonawane、Omprakash P. Bande、Pramod R. Markad、Sayuri Yonekawa、Michael B. Tropak、Sougata Ghosh、Balu A. Chopade、Don J. Mahuran、Dilip D. Dhavale
DOI:10.1021/jo500328u
日期:2014.5.16
that facilitates the synthesis of new 1,5-dideoxy-1,5-iminoribitol iminosugar C-glycosides 7a–e and 8. The key intermediate in this approach is a six-membered cyclic sugar nitrone that is generated in situ and trapped by an alkene dipolarophile via a [2 + 3] cycloaddition reaction to give the corresponding isooxazolidines 10a–e in a “one-pot” protocol. The iminoribitol C-glycosides 7a–e and 8 were found
我们在这里报告了一种新开发的多米诺反应,它促进了新的1,5-二脱氧-1,5-亚氨基核糖醇亚氨基糖C-糖苷7a - e和8的合成。该方法的关键中间体是六元环糖硝酮,它是原位生成的,并由烯烃双极性亲和剂通过[2 + 3]环加成反应捕获,从而以“一锅法”提供相应的异恶唑烷10a – e。发现亚氨基核糖醇C-糖苷7a - e和8是适度的β-半乳糖苷酶(bGal)抑制剂。但是,化合物7c和7e 在突变型溶酶体bGal活性中显示出“药理伴侣”活性,并使其在GM1神经节病患者成纤维细胞中的恢复提高了2-6倍。