C-Glycosides by Aqueous Condensation of β-Dicarbonyl Compounds with Unprotected Sugars
作者:I. Riemann、W.-D. Fessner、M. A. Papadopoulos、M. Knorst
DOI:10.1071/ch02012
日期:——
water, under mildly alkaline conditions, provides a�convenient and effective route to C-glycosidic ketones in high yields. Reactions usually proceed with high β`anomeric' stereoselectivity because product composition is determined by thermodynamic control. Mechanistically, the condensation follows a typical Knoevenagel scheme, after which an intramolecular oxa-Michael cyclization determines C-glycoside
[EN] C-GLYCOSIDE DERIVATIVES<br/>[FR] DÉRIVÉS DE C-GLYCOSIDES
申请人:OKINAWA INST SCIENCE & TECH SCHOOL CORP
公开号:WO2016151989A1
公开(公告)日:2016-09-29
The present invention can provide novel C-glycoside derivatives which are biologically important under high stereoselective, mild, atom economical condition.
Direct synthesis of C-glycosides from unprotected 2-N-acyl-aldohexoses via aldol condensation–oxa-Michael reactions with unactivated ketones
作者:Sherida Johnson、Fujie Tanaka
DOI:10.1039/c5ob02094h
日期:——
C-glycosides are important compounds as they are used as bioactive molecules and building blocks. We have developed methods to concisely synthesize C-glycosides from unprotected 2-N-acyl-aldohexoses and unactivatedketones; we designed aldol-condensation–oxa-Michael addition reactions catalyzed by amine-based catalysts using additives. Depending on the conditions used, C-glycosides were stereoselectively
申请人:OKINAWA INSTITUTE OF SCIENCE AND TECHNOLOGY SCHOOL CORPORATION
公开号:US10435383B2
公开(公告)日:2019-10-08
The present invention can provide novel C-glycoside derivatives which are biologically important under high stereoselective, mild, atom economical condition.
申请人:OKINAWA INSTITUTE OF SCIENCE AND TECHNOLOGY SCHOOL CORPORATION
公开号:US20180118703A1
公开(公告)日:2018-05-03
The present invention can provide novel C-glycoside derivatives which are biologically important under high stereoselective, mild, atom economical condition.