[(1R,2R,3S,4R,5R)-4-(4-methylphenyl)sulfonyloxy-3-nitrooxy-6,8-dioxabicyclo[3.2.1]octan-2-yl] 4-methylbenzenesulfonate 在
硝酸 、
三正丁基氢锡 、
乙酸酐 作用下,
生成
ethyl 3-[(1S,2S,3S,4R,5S,7S)-7-(2-cyanoethyl)-3-hydroxy-2,4-bis-(4-methylphenyl)sulfonyloxy-6,8-dioxabicyclo[3.2.1]octan-7-yl]propanoate