[EN] LARGE-SCALE DIASTEREOSELECTIVE SYNTHESES OF CYCLOHEPTADIENYLSULFONES AND STEREOTETRADS [FR] SYNTHESES DIASTEREOSELECTIVES A GRANDE ECHELLE DE CYCLOHEPTADIENYLSULFONES ET DE STEREOTETRADES
The invention provides novel six and seven-carbon termini-differentiated polypropionate stereotetrads and stereopentads useful in syntheses of natural products. The invention also provides a novel alkylative sulfenylation-desulfonylation process that efficiently transforms enantiopure epoxyvinyl sulfones to syn and anti dienylsulfides in two operations.
Functionality Propagation by Alkylative Oxidation of Cross-Conjugated Cycloheptadienyl Sulfones
作者:Eduardo Torres、Yuzhong Chen、In Chul Kim、P. L. Fuchs
DOI:10.1002/anie.200350955
日期:2003.7.14
Synthesis of the C1–C20 and C15–C27 Segments of Aplyronine A
作者:Wan Pyo Hong、Mohammad N. Noshi、Ahmad El-Awa、Philip L. Fuchs
DOI:10.1021/ol2024746
日期:2011.12.16
The synthesis of C1-C20 and C15-C27 segments of Aplyronine A is described. Oxidative cleavage of cyclic vinyl sulfones has been used to prepare key fragments of Aplyronine A. Key precursors are united by Horner-Wadsworth-Emmons and Julia-Kociensky olefination for the respective elaboration of the C1-C20 and C15-C27 segments.
Second-Generation Synthesis of <i>syn</i>- and <i>anti</i>-Cycloheptadienylsulfone Polyketide Stereodiads
作者:Mohammad N. Noshi、Ahmad El-Awa、Philip L. Fuchs
DOI:10.1021/jo702353e
日期:2008.4.1
Stereodiad sulfones 18a and 18b are key intermediates for polyketide synthesis. This note describes the synthesis of 18a and 18b from enantiopure epoxide 2. The two sequences have been optimized for large-scale synthesis to give 80−85% overall yields in one operation (one operation implies that no crystallization or distillation is required throughout the synthesis) while avoiding chromatography.
[EN] LARGE-SCALE DIASTEREOSELECTIVE SYNTHESES OF CYCLOHEPTADIENYLSULFONES AND STEREOTETRADS<br/>[FR] SYNTHESES DIASTEREOSELECTIVES A GRANDE ECHELLE DE CYCLOHEPTADIENYLSULFONES ET DE STEREOTETRADES
申请人:PURDUE RESEARCH FOUNDATION
公开号:WO2016057606A1
公开(公告)日:2016-04-14
The invention relates to processes for large-scale diastereoselective syntheses of cycloheptadienylsulfone and stereo tetrads, key intermediates for the preparation of Aplyronine A.