CRAVEN, ANDREW P.;DYKE, HAZEL J.;THOMAS, ERIC J., TETRAHEDRON, 45,(1989) N, C. 2417-2429
作者:CRAVEN, ANDREW P.、DYKE, HAZEL J.、THOMAS, ERIC J.
DOI:——
日期:——
Cytochalasan syntheses: Synthesis of (17, 18)-17, 18-dihydroxy-10-(prop-2-YL)-14-methyl-[11]cytochalasa-6(7), 13z, 19E-triene-1, 21-dione; an isomer of aspochalasin C
作者:Andrew P. Craven、Hazel J. Dyke、Eric J. Thomas
DOI:10.1016/s0040-4020(01)83439-6
日期:1989.1
)-Δ3-pyrrolin-2-ones (36), DielsAlder cyclization occurred. The minor (8'Z)-pyrrolinone cyclized stereoselectively to give the adduct (39) which has the aspochalasan stereochemistry around the hydrogenated isoindolone nucleus. However the major (8')-pyrrolinone gave a mixture of and isomers (41) and (43) in which the undesired adduct (43) was the major component. Adduct (39) was converted into dihydroxyenone