2,2,2-Trichloro-acetimidic acid (1R,2S,4S,5R)-3-[2-(tert-butyl-dimethyl-silanyloxy)-eth-(Z)-ylidene]-4-(4-methoxy-benzyloxy)-6,8-dioxa-bicyclo[3.2.1]oct-2-yl ester 在
iodonium(di-γ-collidine) perchlorate 、
锌 作用下,
以
乙醇 、
乙腈 为溶剂,
反应 5.0h,
生成
2'-methyl-(1,6-anhydro-3-deoxy-2-O-(p-methoxybenzyl)-3-C-vinyl-β-D-altropyranosido)-<3,4:4',5'>-Δ2'-oxazoline