A New Highly Regioselective Reaction of Unprotected Sugars for Chemical Synthesis of 6-Acyl-D-Glycopyranosides
摘要:
New methodologies developed to synthesize 6-acyl-D-glycopyranosides are described. Thus, regioselective acylation of non protectedglycopyranosides was performed using acyl-p-nitrothiophenol esters and acyl-2,4-dinitrophenol esters as the acylating reagents, yielding 6-acylated derivatives in high yields.
作者:K. A. Kochetkov、Zh. S. Urmambetova、V. M. Belikov、Z. B. Bakasova
DOI:10.1007/bf00958844
日期:1990.11
A preparative method is proposed for obtaining higher N-acylamino acids by reaction of free amino acids with fatty acid nitrophenyl esters. It was shown that these acids can transport positive ions through a liquid lipophilic medium. A direct method is proposed for obtaining fatty acid 4-nitrophenyl esters by boiling 4-nitrophenol and the fatty acid in xylene in a Soxhlet apparatus in the presence of an acid catalyst.
A New Highly Regioselective Reaction of Unprotected Sugars for Chemical Synthesis of 6-Acyl-D-Glycopyranosides
作者:Jie Xia、Yongzheng Hui
DOI:10.1080/00397919508011779
日期:1995.8
New methodologies developed to synthesize 6-acyl-D-glycopyranosides are described. Thus, regioselective acylation of non protectedglycopyranosides was performed using acyl-p-nitrothiophenol esters and acyl-2,4-dinitrophenol esters as the acylating reagents, yielding 6-acylated derivatives in high yields.