Syntheses of (+)-30-<i>epi</i>-, (−)-6-<i>epi</i>-, (±)-6,30-<i>epi</i>-13,14-Didehydroxyisogarcinol and (±)-6,30-<i>epi</i>-Garcimultiflorone A Utilizing Highly Diastereoselective, Lewis Acid-Controlled Cyclizations
作者:Jonathan H. Boyce、Vincent Eschenbrenner-Lux、John A. Porco
DOI:10.1021/jacs.6b09727
日期:2016.11.9
The first syntheses of 13,14-didehydroxyisogarcinol (6) and garcimultiflorone A (5) stereoisomers are reported in six steps from a commercially available phloroglucinol. Lewis acid-controlled, diastereoselective cationic oxycyclizations enabled asymmetricsyntheses of (-)-6-epi-6 and (+)-30-epi-6. A similar strategy enabled production of the meso-dervied isomers (±)-6,30-epi-6 and (±)-6,30-epi-5. Finally