Syntheses of GM4 and GM3 Intermediates via Alkylation and Subsequent Intramolecular Glycosidation of 2-Alkoxy-2-phenylthioacetate
摘要:
[GRAPHICS]We developed a new method for alpha-glycoside formation of sialyl conjugates based on alkylation and subsequent intramolecular glycosidation of 2-alkoxy-2-phenylthioacetate. By this method we succeeded in the syntheses of G(M4) and G(M3) intermediates.
Catalytic enantioselective [2,3] Stevens and Sommelet-Hauser rearrangements of α-diazo pyrazoleamides with sulfides were achieved by utilizing chiral N,N'-dioxide/nickel(II ) complex catalysts. These rearrangements proceeded well under mild reaction conditions, providing rapid and facile access to a series of functionalized 1,6-dicarbonyls or sulfane-substituted phenylacetates with high to excellent
Compositions for regulating or modulating quorum sensing in bacteria, methods of using the compounds, and methods of regulating or modulating quorum sensing in bacteria
申请人:Georgia State University Research Foundation, Inc.
公开号:EP2529793A2
公开(公告)日:2012-12-05
The present disclosure encompasses compounds and compositions that are useful as specific AI-2 antagonists for the control of bacterial quorum sensing. Although the AI-2 antagonists according to the present disclosure may not have bactericidal effect, their ability to attenuate virulence, drug resistance, and/or biofilm formation have therapeutic benefits. In addition, the AI-2 antagonists of the present disclosure can also be used as tools to probe bacterial AI-2 functions. The present disclosure also encompasses methods for inhibiting or attenuating microbial virulence, biofilm formation, and drug resistance. The methods are suitable for preventing bacteria from accruing and forming extensive biofilms that may be a health or hygiene hazard or a physical issue, such as in the blockage of water or fuel lines.
Pyrazole derivatives as dihydroorotate dehydrogenase (DHODH) inhibitors
申请人:INSTITUT PASTEUR
公开号:EP2929883A1
公开(公告)日:2015-10-14
The present invention relates to compounds of formula (I) for their use in the treatment and/or prevention of auto-immune or auto-immune related diseases, cancer, viral infections, and central nervous system diseases and disorders, by inhibiting human dehydroorate dehydrogenase (DHODH):
Wherein R1, R2, R3, R4 and Ar are as defined in claim 1.
本发明涉及式(I)化合物,通过抑制人脱氢脱氢酶(DHODH),用于治疗和/或预防自身免疫或自身免疫相关疾病、癌症、病毒感染以及中枢神经系统疾病和失调:
其中 R1、R2、R3、R4 和 Ar 如权利要求 1 所定义。
WO2015/155680
申请人:——
公开号:——
公开(公告)日:——
Chiral diazaborolidine-mediated enantioselective aldol reactions of phenylthioacetate esters
作者:E.J Corey、Soongyu Choi
DOI:10.1016/s0040-4039(00)00302-6
日期:2000.4
Methodology is described for the enantioselective conversion of achiral aldehydes by anti-selective aldol reaction to chiral beta-hydroxy-alpha-phenylthio esters and aldehydes. (C) 2000 Elsevier Science Ltd. All rights reserved.