N'-[1-[4-((3aS,4S,6R,6aR)-2,2-Dimethyl-6-trityloxymethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-yl)-2H-pyrazol-3-yl]-meth-(Z)-ylidene]-hydrazinecarboxylic acid ethyl ester 生成
3-((3aS,4S,6R,6aR)-2,2-Dimethyl-6-trityloxymethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-yl)-6H-pyrazolo[1,5-d][1,2,4]triazin-7-one