Synthesis of 1-Deoxymannojirimycin from <scp>d</scp>-Fructose using the Mitsunobu Reaction
作者:Peter Sunde-Brown、Ian D. Jenkins、Todd A. Houston
DOI:10.1021/acs.joc.2c02174
日期:2022.12.16
Three different Mitsunobu reactions have been investigated for the synthesis of 1-deoxymannojirimycin (1-DMJ) from d-fructose. The highest yielding and most practical synthesis can be undertaken on a 10 g scale with minimal chromatography. In the key step, N,O-di-Boc-hydroxylamine reacts with methyl 1,3-isopropylidene-α-d-fructofuranose under Mitsunobu conditions to give 14. Acidic hydrolysis affords
研究了三种不同的 Mitsunobu 反应,用于从d-果糖合成 1-脱氧甘露尻霉素 (1-DMJ) 。最高产率和最实用的合成可以在 10 g 规模上进行,色谱最少。在关键步骤中,N , O -di-Boc-hydroxylamine 与甲基 1,3-isopropylidene-α- d - fructofuranose 在 Mitsunobu 条件下反应生成14。酸性水解得到硝酮15,它通过催化氢解定量还原得到 1-DMJ ( 4 ),从d-果糖总收率为 55% (比较叠氮化物途径为 37%,鼻磺酰途径为 29%)。