β-Fragmentation of alkoxy radicals. An approach to the synthesis of ring a of vernolepin
作者:C.G Francisco、R Freire、M.S Rodríguez、E Suárez
DOI:10.1016/s0040-4039(00)95523-0
日期:1987.1
A model of ring A of vernolepin is synthesized by 1,4-fragmentation of γ-thiyl and γ-stannyl alkoxy-radicals, generated by photolysis of the corresponding δ-lactols (4) and (5) in the presence of iodosobenzene diacetate and iodine. It should be pointed out that the δ-lactone ring and the angular vinyl group are introduced in one step.