Synthesis of (+)-1-epi-castanospermine from l-sorbose
作者:Isidoro Izquierdo、Juan A. Tamayo、Miguel Rodríguez、Francisco Franco、Daniele Lo Re
DOI:10.1016/j.tet.2008.06.021
日期:2008.8
synthesis of 1-epi-castanospermine (2) from l-sorbose is described. The successful approach involved the use of 8-azido-2,8-dideoxy-α-l-gulo-oct-4-ulo-4,7-furanosononitrile intermediate (17). This compound was easily made in five steps from 3-O-benzoyl-2-deoxy-4,5:6,8-di-O-isopropylidene-α-l-gulo-oct-4-ulo-4,7-furanosononitrile (7) previously synthesized from l-sorbose. Catalytic hydrogenation of the azido