Isothiocyanato derivatives of sugars in the stereoselective synthesis of spironucleosides and spiro-C-glycosides
摘要:
A stereocontrolled synthesis of pyranoid and furanoid spironucleosides and spiro-C-glycosides (D-ribo and D-arabino configurations) of oxazolidines, oxazolines and perhydrooxazines via isothiocyanato sugar derivatives is reported. The intermediate isothiocyanates are prepared from sugar spiroketals by stereoselective opening of the acetal ring with trimethylsilyl N- and C-nucleophiles, and later formation of the isothiocyanato group. (C) 2001 Elsevier Science Ltd. All rights reserved.
Isothiocyanato derivatives of sugars in the stereoselective synthesis of spironucleosides and spiro-C-glycosides
作者:Consolación Gasch、M.Angeles Pradera、Bader A.B. Salameh、José L. Molina、José Fuentes
DOI:10.1016/s0957-4166(01)00223-3
日期:2001.6
A stereocontrolled synthesis of pyranoid and furanoid spironucleosides and spiro-C-glycosides (D-ribo and D-arabino configurations) of oxazolidines, oxazolines and perhydrooxazines via isothiocyanato sugar derivatives is reported. The intermediate isothiocyanates are prepared from sugar spiroketals by stereoselective opening of the acetal ring with trimethylsilyl N- and C-nucleophiles, and later formation of the isothiocyanato group. (C) 2001 Elsevier Science Ltd. All rights reserved.