Efficient Synthesis of α-Glycosyl Chlorides Using 2-Chloro-1,3-dimethylimidazolinium Chloride: A Convenient Protocol for Quick One-Pot Glycosylation
作者:Madhu Babu Tatina、Duc Thinh Khong、Zaher M. A. Judeh
DOI:10.1002/ejoc.201800360
日期:2018.5.24
A convenient method for the synthesis of α‐glycosyl chloride donors in high 80–96 % yields within 15–30 min using 2‐chloro‐1,3‐dimethylimidazolinium chloride has been developed. The method enables quick and direct one‐pot glycosylationreactions in high overall yields.
Chiral Catalyst-Directed Dynamic Kinetic Diastereoselective Acylation of Anomeric Hydroxyl Groups and a Controlled Reduction of the Glycosyl Ester Products
作者:Hao-Yuan Wang、Christopher J. Simmons、Yu Zhang、Angela M. Smits、Paul G. Balzer、Shuojin Wang、Weiping Tang
DOI:10.1021/acs.orglett.6b03683
日期:2017.2.3
method is developed for the diastereoselective acylation of the anomeric hydroxyl group in diverse carbohydrates to form either α- or β-anomeric esters. While exclusive formation of the β-isomer was observed in most sugar substrates with one enantiomer of the chiralcatalyst, moderate to high α-selectivity was obtained by using the other enantiomer of the chiralcatalyst. The resulting α- and β-anomeric
[EN] 2-AZETIDINONES AS ANTI-HYPERCHOLESTEROLEMIC AGENTS<br/>[FR] COMPOSES DE 2-AZETIDINONES UTILISES COMME AGENTS POUR LUTTER CONTRE UNE HYPERCHOLESTEROLEMIE
申请人:MERCK & CO INC
公开号:WO2005044256A1
公开(公告)日:2005-05-19
The instant invention provides novel cholesterol absorption inhibitors of Formula I and the pharmaceutically acceptable salts and esters thereof. The compounds are useful for lowering plasma cholesterol levels, particularly LDL cholesterol, and for treating and preventing atherosclerosis and atherosclerotic disease events.
The instant invention provides novel cholesterol absorption inhibitors of Formula I and the pharmaceutically acceptable salts and esters thereof. The compounds are useful for lowering plasma cholesterol levels, particularly LDL cholesterol, and for treating and preventing atherosclerosis and atherosclerotic disease events.