Glycosylidene Carbenes. Part 32
作者:Sissi E. Mangholz、Karin Briner、Bruno Bernet、Andrea Vasella
DOI:10.1002/hlca.200390202
日期:2003.7
Acylation and sulfonylation of the N,N′-unsubstituted glucosylidenespirodiaziridines 1A/1B 95 : 5 with Ac2O, BzCl, FmocCl, TsCl, (naphthalen-2-yl)sulfonyl, and (2,4,6-triisopropylphenyl)sulfonyl chloride, and concomitant rearrangement gave the acylated and sulfonylated gluconolactone hydrazones 2B–2G in 40–83% yield (Scheme 2). Similarly, the galacto and manno analogues 3A/3B 95 : 5 and 5A/5B 55 : 45
酰化和磺酰化Ñ,Ñ ' -未取代的glucosylidenespirodiaziridines 1A / 1B 95:5用Ac 2 O,BzCl,FmocCl,的TsCl,(萘-2-基)磺酰基和(2,4,6-三异丙基)磺酰氯,并伴随重排得到酰化和磺酰化的葡萄糖酸内酯2B - 2G,收率40-83%(方案2)。类似地,半乳和甘露类似物3A / 3B 95:5和5A / 5B 55:45和甘露呋喃基亚砜-二氮丙啶将30个样品乙酰化并甲苯磺酸化,得到4A,4B, 6、31A和31B(55-73%产率;方案2和5)。15的N-二标签11A / 11B和14A / 14B表明的pseudoequatorial NH葡糖二氮丙啶1和的pseudoaxial NH半乳二氮丙啶3被优先乙酰化和甲苯磺酸化(方案3)。N-甲基化二氮丙啶19A / 19B的磺酰化72:28,22A/ 22B 85:15、25A