(E)-3,4,5,6,7-penta-O-acetyl-1,2-dideoxy-1-C-nitro-D-manno-hept-1-enitol 、
环戊二烯 以
甲苯 为溶剂,
反应 2.5h,
生成 (5S,6S)1,2,3,4,5-penta-O-acetyl-1-C-(5-endo-nitrobicylo<2.2.1>hept-2-en-6-exo-yl)-D-manno-pentitol 、 (5S,6S)1,2,3,4,5-penta-O-acetyl-1-C-(5-exo-nitrobicyclo<2.2.1>hept-2-en-6-endo-yl)-D-manno-pentitol 、 Acetic acid (1R,2R,3R,4R)-2,3,4,5-tetraacetoxy-1-((1S,2R,3R,4R)-3-nitro-bicyclo[2.2.1]hept-5-en-2-yl)-pentyl ester 、
Acetic acid (1R,2R,3R,4R)-2,3,4,5-tetraacetoxy-1-((1R,2R,3R,4S)-3-nitro-bicyclo[2.2.1]hept-5-en-2-yl)-pentyl ester