Novel lincomycin derivatives are disclosed. These lincomycin derivatives exhibit antibacterial activity. The compounds of the subject invention may exhibit potent activities against bacteria, including gram positive organisms, and may be useful antimicrobial agents. Methods of synthesis and of use of the compounds are also disclosed.
Novel lincomycin derivatives are disclosed. These lincomycin derivatives exhibit antibacterial activity. The compounds of the subject invention may exhibit potent activities against bacteria, including Gram positive organisms, and may be useful antimicrobial agents. Methods of synthesis and of use of the compounds are also disclosed.
Enantioselective Friedel-Crafts Alkylation of Thiophenes with Ethyl Glyoxylate: Easy Access to Chiral Secondary Alcohols
作者:Zhong Huang、Jingchang Zhang、Yuqiang Zhou、Nai-Xing Wang
DOI:10.1002/ejoc.201001455
日期:2011.2
Friedel–Craftsalkylation reactions of ethylglyoxylate with various thiophenes to give the corresponding chiralsecondaryalcohols were demonstrated. The majority of these reactions proceeded with good enantioselectivities (up to 91 %) and satisfactory isolated yields. Notably, we found that 2-substituted thiophenes underwent the reaction more smoothly than unsubstituted and 3-substituted thiophenes
Process for the production of carboxylic acids and/or esters thereof
申请人:The British Petroleum Company p.l.c.
公开号:EP0146291A1
公开(公告)日:1985-06-26
Carboxylic acids and/or esters thereof are produced by reacting either a benzylic or an aromatic mercaptan with carbon monoxide and either water or an aqueous alcohol at elevated temperature, suitably in the range from 100 to 300°C, in the presence as catalyst of a cobalt carbonyl, the product using water as the reactant being a carboxylic acid and using aqueous alcohol as the reactant a carboxylic acid ester, mixtures of acids and esters being formed using aqueous alcohols having high water concentrations.