Diastereoselective reduction of (S)-1-chloro-3-silyloxybutan-2-one. Synthesis of enantiopure (2S,3R) and (2S,3S) O-tert-butyldimethylsilyl-3,4-epoxybutan-2-ol
Filipin III: Configuration Assignment and Confirmation by Synthetic Correlation
作者:Timothy I. Richardson、Scott D. Rychnovsky
DOI:10.1021/jo960218x
日期:1996.1.1
The stereochemical configuration of filipinIII (1) was determined using the (13)C acetonide analysis. The relative configurations for the nine stereogenic centers in the top half of filipin were initially identified using just three acetonide derivatives (2, 3, and 4) arising from a two-step protection sequence. The structure was confirmed by synthesis and direct correlation of degradation products