Chemoenzymatic synthesis of carbocyclic nucleoside analogues with bicyclo[3.1.0]hexyl residues
作者:Fritz Theil、Sibylle Ballschuh、Martin von Janta-Lipinski、Roger A. Johnson
DOI:10.1039/p19960000255
日期:——
The carbocyclic nucleoside analogues 8 and ent-8 have been prepared based on the enantiomerically pure bicyclo[3.1.0]hexane monoacetates 5 and ent-5 which were obtained by a lipase-catalysed asymmetrization of the meso-bicyclo [3.1.0] hexane derivatives 4 and 6, respectively. By an enantiodivergent approach both nucleoside analogues 8 and ent-8 have been synthesized starting from the common enantiomer 5. Furthermore, the adenine derivative ent-8 has been obtained from the monoacetate ent-5.
碳环核苷类似物 8 和 ent-8 是基于对映体纯的双环[3.1.0]己烷单乙酸酯 5 和 ent-5 制备的,后者是通过内消旋双环[3.1.0]己烷的脂肪酶催化不对称化获得的分别为导数 4 和 6。通过对映异构体方法,从共同的对映体 5 开始合成了核苷类似物 8 和 ent-8。此外,还从单乙酸酯 ent-5 获得了腺嘌呤衍生物 ent-8。