olidine 1-oxides with various 2-substituents into the free diols and, by reduction, into the corresponding pyrrolidinediols (iminoglycitols) is described. The pyrrolidine N-oxides were derived from D-ribose via unsaturated hydroxylamines, with the key steps of nitrone addition and Cope−House cyclization as described earlier. The biological activity of these compounds with respect to glycosidase inhibition
描述了具有各种 2-取代基的 3,4-异亚丙基二氧基-5-甲基
吡咯烷 1-氧化物转化为游离二醇,并通过还原转化为相应的
吡咯烷二醇(亚
氨基糖醇)。
吡咯烷 N-氧化物通过不饱和
羟胺从
D-核糖衍生而来,关键步骤是硝酮加成和 Cope-House 环化,如前所述。检查了这些化合物在糖苷酶抑制方面的
生物活性;虽然所有测试的
吡咯烷 N-氧化物都被证明是无活性的,但一些新的亚
氨基多元醇对 α-
L-岩藻糖苷酶和 α-
D-葡萄糖苷酶表现出中等活性,Ki 值为 30-40 μM。