Condensation between unprotected aldoses and dibenzoylmethane catalyzed by NaHCO(3) in the cosolvents EtOH and H(2)O (4:1) under microwave irradiation gave aryl ketone beta-C-glycosides 6b-i in higher yields (from 50% with C-riboside 6g up to 99% with C-glucoside 6b) and better anomeric selectivities (beta-configuration >95%) in a shorter reaction time (90 min), compared with previous conventional
Synthesis of a small library of oximes and phenylhydrazones of phenyl ketone <i>C</i>-glycosides
作者:Xiaomin Gu、Zhijie Fang
DOI:10.1080/07328303.2016.1227830
日期:2016.6.12
ABSTRACT An efficient and convenient route was developed for the synthesis of oximes, the corresponding O-methylated oximes, and phenylhydrazones from phenyl ketone C-glycosides in medium to high yields. The broad substrate and reagent scope of this method expands the potential of applying phenyl ketone C-glycosides to the synthesis of important bioactive molecules.
Bamford-Stevens reaction assisted synthesis of styrene<i>C</i>-glycosides
作者:Balram Singh、Sandeep Kumar、Jyotirmoy Maity、Indrajit Roy、Ashok K. Prasad
DOI:10.1080/00397911.2019.1606921
日期:2019.8.3
groups present in the molecule. A highly efficient route for the synthesis of 1-phenyl-2-(β-D-glycopyranosyl)ethenes has been developed from native sugars, which neither requires protection/deprotection of the hydroxyl groups nor use of any metal/metal ions. The key step of the developed methodology is the use of Bamford-Stevens reaction which led to the formation of the desired compounds in moderate
USE OF A GALACTOSE-DERIVED C-GLYCOSIDE COMPOUND AS AN AGENT FOR ACTIVATING AND REGULATING CUTANEOUS IMMUNITY
申请人:L'Oréal
公开号:EP2007746A1
公开(公告)日:2008-12-31
[EN] USE OF A GALACTOSE-DERIVED C-GLYCOSIDE COMPOUND AS AN AGENT FOR ACTIVATING AND REGULATING CUTANEOUS IMMUNITY<br/>[FR] UTILISATION D'UN COMPOSÉ C-GLYCOSIDE DÉRIVÉ DU GALACTOSE EN TANT QU'AGENT POUR ACTIVER ET RÉGULER L'IMMUNITÉ CUTANÉE
申请人:OREAL
公开号:WO2007116013A1
公开(公告)日:2007-10-18
[EN] The present invention relates to novel galactose derivatives of general formula (I) and to their use as agents for stimulating the immune system of the skin and/or as immunoregulators, and for preparing a composition containing a cosmetically or pharmaceutically acceptable medium, intended in particular to prevent and/or limit the appearance of cutaneous immune imbalances, in particular related to environmental stresses. [FR] Cette invention concerne des nouveaux dérivés de galactose représentés par la formule générale (I), ainsi que leur utilisation en tant qu'agents pour stimuler le système immunitaire de la peau et/ou en tant qu'immunorégulateurs, et pour préparer une composition contenant un milieu acceptable sur le plan cosmétique ou pharmaceutique, laquelle composition permet, plus particulièrement, d'empêcher et/ou de limiter l'apparition de déséquilibres immunitaires cutanés, notamment ceux qui sont associés aux agressions environnementales