An expedient synthesis of 2,5-disubstituted-3-oxygenated tetrahydrofurans
摘要:
Single enantiomer 2,5-disubstituted-3-oxygenated tetrahydrofurans are synthesized in as little as four steps from a commercially available epoxide. The key steps are homoallylic alcohol epoxidation, palladium-catalysed alkoxy-carbonylation-lactonisation and Mitsunobu inversion. The protocol is applied to the formal total syntheses of (+)-kumausallene, (6S,7S,9R,10R)-6,9-epoxynonadec-18-ene-7,10-diol and the core of lytophilippine A. (C) 2009 Elsevier Ltd. All rights reserved.
Total synthesis of C19 lipid diols containing a 2,5-disubstituted-3-oxygenated tetrahydrofuran
作者:Caroline L. Nesbitt、Christopher S. P. McErlean
DOI:10.1039/c0ob00754d
日期:——
The total synthesis of the C19 lipid diols 5 and 6, the enantiomers of the anthelmintic marine natural products 1 and 3, is described. Key steps in the divergent syntheses include a syn selective epoxidation of a homoallylic alcohol, a one-pot alkoxypalladation-carbonylation-lactonisation reaction sequence and a DMEAD promoted Mitsunobu inversion.
An expedient synthesis of 2,5-disubstituted-3-oxygenated tetrahydrofurans
作者:Caroline L. Nesbitt、Christopher S.P. McErlean
DOI:10.1016/j.tetlet.2009.08.114
日期:2009.11
Single enantiomer 2,5-disubstituted-3-oxygenated tetrahydrofurans are synthesized in as little as four steps from a commercially available epoxide. The key steps are homoallylic alcohol epoxidation, palladium-catalysed alkoxy-carbonylation-lactonisation and Mitsunobu inversion. The protocol is applied to the formal total syntheses of (+)-kumausallene, (6S,7S,9R,10R)-6,9-epoxynonadec-18-ene-7,10-diol and the core of lytophilippine A. (C) 2009 Elsevier Ltd. All rights reserved.