Synthesis of (1R,3R)-3-[2-(Aminoethyl)-2,2-dimethylcyclobutyl]methanol and (1S,3R)-(3-Amino-2,2-dimethylcyclobutyl)methanol from (+)-Nopinone
作者:M. José Figueira、J. Manuel Blanco、Olga Caamaño、Franco Fernández、Xerardo García-Mera、Carmen López
DOI:10.1055/s-2000-7112
日期:——
6 and 7, which are of interest as intermediates in the synthesis of carbocyclic analogs of nucleosides, were synthesized from (+)-nopinone (8). Ring opening of α-isonitrosonopinone leads to a cyanoester which can be directly reduced to 6. Alternatively, a longer route from the lactam 12, one of the Beckmann rearrangement products of 8, leads also to 6, in a higher overall yield. Besides this the isomeric
标题氨基醇 6 和 7,作为合成核苷碳环类似物的中间体,是由 (+)-nopinone (8) 合成的。α-异亚硝基醌的开环产生可以直接还原为 6 的氰基酯。或者,从 8 的贝克曼重排产物之一的内酰胺 12 出发的更长路线也导致 6,总产率更高。除此之外,异构内酰胺 13 在水解打开、侧链氧化降解和还原后转化为 7。