Total Synthesis of the Proposed Structure for Spirofungin B: A Reassignment of the Stereochemistry
作者:Shannon D. Zanatta、Jonathan M. White、Mark A. Rizzacasa
DOI:10.1021/ol049873e
日期:2004.3.1
[structure: see text] The totalsynthesis of the proposedstructure for spirofungin B (2) is described. The data for the synthetic material did not compare with that for the natural product leading to the conclusion that the structure2 assigned for spirofungin B is incorrect. Analysis of the NMR data reported for spirofungins A and B as well as related spiroketals allowed for the reassignment of the
作者:Anthony N. Cuzzupe、Craig A. Hutton、Michael J. Lilly、Robert K. Mann、Mark A. Rizzacasa、Steven C. Zammit
DOI:10.1021/ol991281m
日期:2000.1.1
The total synthesis of the epidermal growth factor inhibitor reveromycin B (2) is described. A novel, convergent, and stereoselective reaction sequence was utilized to construct the 5,6-spiroketal system 10 which was converted into the natural product 2 by a 16-step sequence.
Total Synthesis of (−)-Reveromycin A
作者:Mariana El Sous、Danny Ganame、Peter A. Tregloan、Mark A. Rizzacasa
DOI:10.1021/ol048811l
日期:2004.8.1
The asymmetric total synthesis of (-)-reveromycin A is described. The key steps involved a Lewis acid catalyzed inverse electron demand hetero-Diels-Alder reaction followed by hydroboration/oxidation to afford the spiroketal core 4 in a highly stereoselective manner and introduction of the C18 hemisuccinate by high-pressure acylation.