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Syntheses of difluorinated carbasugar phosphates from trifluoroethanol†
Timo Anderl,Christophe Audouard,Afjal Miah,Jonathan M. Percy,Giuseppe Rinaudo,Kuldip Singh
Organic & Biomolecular Chemistry Pub Date : 10/20/2009 00:00:00 , DOI:10.1039/B914068A
Abstract

Difluorinated cyclohexene diols (prepared from trifluoroethanol) can be elaborated to racemic analogues of phosphorylated sugarsvia regioselective protection and phosphorylation of the exposed C-1 hydroxyl group. Cis-diol protection was achieved using stannylene methodology, though the regioselectivity depended on the orientation of the methyl group at C-5. UpJohn dihydroxylation is effective with the phosphotriester in place and global deprotection to the tetrol monophosphates is efficient.

Graphical abstract: Syntheses of difluorinated carbasugar phosphates from trifluoroethanol
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