Radical cyclisations onto 2(5)-furanone and maleate electrophores. An approach to the spiro- and linear-fused γ-lactone ring systems found in the ginkgolides
作者:Timothy Harrison、Peter L. Myers、Gerald Pattenden
DOI:10.1016/s0040-4020(01)81099-1
日期:1989.1
Intramolecular radicalcyclisations involving α-acetal methyl centres, and 2(5)-furanone and maleate electrophores, allow the facile synthesis of spiro- and linear-fused γ-lactone ringsystems (5), (6), (7) and (8) present in the ‘ginkgolides’ viz (1) and (2) produced by the ginkgo tree .