Direct nucleophilic difluoromethylation of enolizable ketones with CHF2TMS/HMPA
作者:Oleg M. Michurin、Dmytro S. Radchenko、Igor V. Komarov
DOI:10.1016/j.tet.2016.01.032
日期:2016.3
reagent Me3SiCF2H enables multigram synthesis of difluoromethyl alcohols in good yields under mild conditions from a number of aldehydes and ketones in the presence of HMPA. This additive makes possible the previously challenging nucleophilic difluoromethylation of enolizable ketones. DMPU can be used as a non-toxic alternative to the HMPA in the difluoromethylation reaction, albeit the yields were slightly
[EN] RIFAMYCIN IMINO DERIVATIVES EFFECTIVE AGAINST DRUG-RESISTANT MICROBES<br/>[FR] DERIVES DE RIFAMYCINE IMINO EFFICACES CONTRES DES MICROBES PHARMACORESISTANTS
申请人:CUMBRE INC
公开号:WO2005070941A1
公开(公告)日:2005-08-04
The present invention relates to rifamycin 3-iminomethylenyl (-CH=N-) derivatives having antimicrobial activities, including activities against drug-resistant microorganisms. The claimed rifamycin derivative has a rifamycin moiety covalently linked to a linker through an iminomethylenyl (-CH=N-) group at the C-3 carbon of the rifamycin moiety and the linker is, in turn, covalently linked to a quinolone structure or its pharmacophore within the DNA gyrase and topoisomerase IV inhibitor family. The inventive rifamycins are novel and exhibit activity against both rifampin and ciprofloxacin-resistant microorganisms.
(3,4-DICHLORO-PHENYL)-((S)-3-PROPYL-PYRROLIDIN-3-YL)-METHANONE HYDROCHLORIDE AND MANUFACTURING PROCESSES
申请人:Hoffmann-La Roche Inc.
公开号:US20150045408A1
公开(公告)日:2015-02-12
The present invention is concerned with a novel process for the preparation of a compound of formula I and its hydrates
The compounds of formula I and the corresponding hydrates are pharmaceutically active substances.
PHTHALAZINONES AND ISOQUINOLINONES AS ROCK INHIBITORS
申请人:Bristol-Myers Squibb Company
公开号:US20140206686A1
公开(公告)日:2014-07-24
The present invention provides compounds of Formula (I):
or stereoisomers, tautomers, or pharmaceutically acceptable salts thereof, wherein all the variables are as defined herein. These compounds are selective ROCK inhibitors. This invention also relates to pharmaceutical compositions comprising these compounds and methods of treating cardiovascular, smooth muscle, oncologic, neuropathologic, autoimmune, fibrotic, and/or inflammatory disorders using the same.
Rifamycin imino derivatives effective against drug-resistant microbes
申请人:Ding Z. Charles
公开号:US20050209210A1
公开(公告)日:2005-09-22
The present invention relates to rifamycin 3-iminomethylenyl (—CH═N—) derivatives having antimicrobial activities, including activities against drug-resistant microorganisms. The claimed rifamycin derivative has a rifamycin moiety covalently linked to a linker through an iminomethylenyl (—CH═N—) group at the C-3 carbon of the rifamycin moiety and the linker is, in turn, covalently linked to a quinolone structure or its pharmacophore within the DNA gyrase and topoisomerase IV inhibitor family. The inventive rifamycins are novel and exhibit activity against both rifampin and ciprofloxacin-resistant microorganisms.