Synthesis of (±)-carbocyclic analogue of spirohydantoin nucleoside
作者:Hiromi Sano、Soji Sugai
DOI:10.1016/0040-4020(95)00162-2
日期:1995.4
Synthesis of (±)-carbocyclic spirohydantoin derivatives of (+)-hydantocidin is described. The pivotal step in the synthesis is spirohydantoin ring construction from cyclopentanone 9. Using the Bucherer-Bergs condition predominately gave the epi-carbocyclic analogue 10, whereas the alternative spiroring formation method through α-aminonitrile 13 provided the carbocyclic analogue 2 after deprotection