2-((3aS,4R,6R,6aR)-2,2-Dimethyl-6-trityloxymethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-yl)-pyrazolo[1,5-a]pyridine-3-carboxylic acid ethyl ester 在
盐酸羟胺 作用下,
以
乙醇 为溶剂,
反应 2.0h,
以71%的产率得到2-((2R,3R,4S,5R)-3,4-Dihydroxy-5-hydroxymethyl-tetrahydro-furan-2-yl)-pyrazolo[1,5-a]pyridine-3-carboxylic acid ethyl ester