Chemical Synthesis of β-Homonojirimycin, of Its <i>N</i>-Butyl Derivative, and of “Methyl Homoazacellobioside”
作者:Oscar M. Saavedra、Olivier R. Martin
DOI:10.1021/jo960362i
日期:1996.1.1
beta-Homonojirimycin (2) was prepared by the highly stereoselective double reductive amination of a 2,6-heptodiulose derivative (6 or 13) using ammonium formate and NaBH(3)CN. The process was unsuccessful with primary amines. The synthesis of N-butyl-beta-homonojirimycin (19) was achieved by the N-butanoylation of a derivative of 2 followed by the reduction of the resulting tertiary amide. Compound
使用甲酸铵和NaBH(3)CN通过2,6-庚二糖衍生物(6或13)的高度立体选择性双还原胺化反应制备了β-Homonojirimycin(2)。使用伯胺的方法无法成功。N-丁基-β-homonojirimycin(19)的合成是通过2的衍生物的N-丁酰化,然后还原生成的叔酰胺而实现的。与N-丁基-1-脱氧野oji霉素相比,发现化合物19完全没有抗HIV活性。将化合物2的1-Op-甲苯磺酰基衍生物与甲基2,3,6-三-O-苄基-α-D-吡喃葡萄糖苷偶联,然后进行脱保护步骤,得到假二糖23,即“ homozaza”甲基α-纤维二糖苷类似物和β-葡聚糖加工酶的潜在抑制剂。