Synthetic Studies toward C3‐C9 Segment of Soraphen A1α
摘要:
The ring-closure metathesis of the diene (2S, 3R, 4S)-1-(tert-butyldiphenylsilyloxy)-2,4- dimethylhex-5-en-3-yl acrylate produced the dihydropyrone with the correct stereochemistry for Soraphen A(1 alpha) synthesis. The C2,C3 stereocenters were introduced by the addition of the (Z)-crotyl-n-butylstannane to the beta-alkoxyaldehyde( S)-3-(benzyloxy)-2-methylpropanal in presence of TiCl4 as a chelating catalyst to give the desired anti,syn homoallyic alcohol (2S, 3R, 4S)-1-(tert-butyldiphenylsilyloxy)2,4- dimethylhex-5-en-3-ol.
Synthetic Studies toward C3‐C9 Segment of Soraphen A<sub>1α</sub>
作者:Ahmad Farouk Eweas
DOI:10.1080/00397910801929358
日期:2008.4.1
The ring-closure metathesis of the diene (2S, 3R, 4S)-1-(tert-butyldiphenylsilyloxy)-2,4- dimethylhex-5-en-3-yl acrylate produced the dihydropyrone with the correct stereochemistry for Soraphen A(1 alpha) synthesis. The C2,C3 stereocenters were introduced by the addition of the (Z)-crotyl-n-butylstannane to the beta-alkoxyaldehyde( S)-3-(benzyloxy)-2-methylpropanal in presence of TiCl4 as a chelating catalyst to give the desired anti,syn homoallyic alcohol (2S, 3R, 4S)-1-(tert-butyldiphenylsilyloxy)2,4- dimethylhex-5-en-3-ol.
Stereoselective Synthesis of the Western Hemisphere of Salinomycin
作者:Igor Larrosa、Pedro Romea、Fèlix Urpí
DOI:10.1021/ol052900w
日期:2006.2.1
[structure: see text]. A convergent and module-based strategy for the asymmetric synthesis of the western hemisphere (C1-C17 fragment) of salinomycin has been devised. This new synthetic approach relies on highlystereoselective C-glycosidation and aldol processes.