3,5-Di(trifluoromethyl)phenyl(cyano)iodonium triflate is described as an accessible, stable, and powerful thiophile that can activate batches of p-tolyl thioglycoside donors at room temperature. Various alcoholic acceptors were efficiently glycosylated, providing the desired glycosides. The novel activation protocol features mild conditions as well as high compatibility with some classic strategies
A series of new derivatives of the clinically used aminoglycoside antibiotic paromomycin were designed, synthesized, and their ability to read-through premature stop codon mutations was examined in both in vitro translation system and ex vivo mammalian cultured cells. One of these structures, a pseudo-trisaccharide derivative, showed notably higher stop codon read-through activity in cultured cells compared to those of paromomycin and gentamicin. (c) 2006 Elsevier Ltd. All rights reserved.
A general method for N-glycosylation of nucleobases promoted by (p-Tol)<sub>2</sub>SO/Tf<sub>2</sub>O with thioglycoside as donor
作者:Guang-jian Liu、Xiao-tai Zhang、Guo-wen Xing
DOI:10.1039/c5cc03617h
日期:——
35 nucleosides were synthesized by coupling thioglycosides with pyrimidines and purines under the preactivation of (p-Tol)2SO/Tf2O in high yields and with β-stereoselectivities.
Novel aminoglycosides and uses thereof in the treatment of genetic disorders
申请人:Bassov Timor
公开号:US20090093418A1
公开(公告)日:2009-04-09
A new class of paromomycin-derived aminoglycosides, which exhibit efficient stop-codon mutation suppression activity, low toxicity and high selectivity towards eukaryotic cells are provided. Also provided are chemical and chemo-enzymatic processes of preparing these paromomycin-derived aminoglycosides and intermediates thereof, as well as pharmaceutical compositions containing the same, and uses thereof in the treatment of genetic disorders.