申请人:LEK, tovarna farmacevtskih in kemicnih izdelkov, d.d.
公开号:US06489318B1
公开(公告)日:2002-12-03
Disclosed are novel ethylidene derivatives of tricyclic carbapenems of the formula I
wherein the ring marked C and X have the meaning as in the description, in the form of pure diastereoisomers and in the form of pure geometric isomers. Novel ethylidene derivatives of tricyclic carbapenems of the formula I are used as inhibitors of the action of the enzyme &bgr;-lactamase and/or as antibiotics in human and veterinary medicine. Also disclosed are pharmaceutical formulations for the treatment of bacterial infections of human and animal organisms comprising as an active ingredient a therapeutically effective amount of an ethylidene derivative of tricyclic carbapenems of the formula I in the form of an acid, a pharmaceutically acceptable salt or ester thereof and optionally in a combination with a &bgr;-lactam antibiotic, and usual pharmaceutically acceptable carriers and auxiliary substances.
Also disclosed is a process for the preparation of novel ethylidene derivatives of tricyclic carbapenems of the formula I.
Alteration of hydrolase genes and screening of the resulting libraries for the ability to catalyze specific reactions
申请人:——
公开号:US20020042055A1
公开(公告)日:2002-04-11
The present invention relates to halocarbon and halohydrocarbon chemistry, including methods of dehalogenating halocarbons and halohydrocarbons to provide, inter alia, alcohols, polyols, and epoxides. In general, the methods involve reaction pathways catalyzed by altered hydrolase enzymes that can provide stereoselective or stereospecific reaction products. The invention also includes methods of providing altered nucleic acids that encode altered dehalogenase or other hydrolase enzymes. Additionally, the invention includes various reaction formats and kits.