Some higher-carbon carbohydrates, dodecose derivatives, have been synthesized by means of the basecatalyzed addition of nitro sugar to sugar aldehyde. The addition reaction of 6,7-dideoxy-1,2:3,4-di-O-isopropylidene-7-nitro-α-d-galacto-heptopyranose to 2,3:4,5-di-O-isopropylidene-d-arabinose yielded three isomeric dodecose derivatives, and their configurations have been studied. The nitro dodecose derivatives were converted into the corresponding hydroxy and acetoxy derivatives.
一些高
碳水化合物,十二糖衍
生物,已通过氮糖对糖醛进行碱催化加成的方法合成。6,7-去氧-1,2:3,4-二-O-异丙基苄烯-7-硝基-α-d-半
乳糖庚
吡喃糖与2,3:4,5-二-O-异丙基苄烯-d-
阿拉伯糖的加成反应产生了三种异构体的十二糖衍
生物,并对它们的构型进行了研究。硝基十二糖衍
生物被转化为相应的羟基和乙酰氧基衍
生物。