A Synthesis of C(16),C(18)-Bis-<i>epi</i>-cytochalasin D via Reformatsky Cyclization
作者:E. Vedejs、S. M. Duncan
DOI:10.1021/jo000533q
日期:2000.9.1
Claisen rearrangement. Diels-Alder cycloaddition of 5 with 4 gave the adduct 6 in 77% yield, and Reformatsky cyclization under dilution conditions afforded 10 (67%). After conversion to enol silane 32, oxidation with dimethyldioxirane produced 34. Conversion to a key intermediate 38 using electrophilic selenenylation and selenoxide rearrangement, followed by enolate alkylation and deprotection, gave