作者:Francisco J. Sayago、José Fuentes、Manuel Angulo、Consolación Gasch、M. Ángeles Pradera
DOI:10.1016/j.tet.2007.03.097
日期:2007.5
Nor-tropane related bicyclic (6+5) iminocyclitols with an ether bridge and different substituents (hydroxymethyl, aminomethyl, and aminoethyl) on C-1 are prepared starting from a β-d-psicofuranosyl cyanide. The method involves an internal nucleophilic attack of a stabilized amide ion on a 5-mesyloxy derivative. The intermediate N-acetyl O-protected iminocyclitols present atropoisomerism due to restricted
从β-d-psicofuranosyl氰化物开始,制备在C-1上具有醚桥和不同取代基(烷氧基,羟甲基,氨甲基和氨乙基)的正烷烷相关的双环(6 + 5)亚氨基环醇。该方法涉及稳定的酰胺离子对5-甲磺酰氧基衍生物的内部亲核攻击。中间的N-乙酰基O-保护的亚氨基环醇由于N-CO酰胺键的旋转受限而呈现出对映异构现象。讨论了所制备化合物的构象方面。