Synthesis of 3'-Difluoromethylene-3'-deoxythymidine and Some Derivatives
作者:Pawel J. Serafinowski、Colin L. Barnes
DOI:10.1055/s-1997-1170
日期:1997.2
Ultrasound-assisted reaction of the 3'-oxo derivative of thymidine (1) with bromodifluoromethyl[tris(dimethylamino)phosphonium] bromide (8) and zinc, gives the corresponding 3'-difluoromethylene nucleoside 5. Subsequent removal of the dimethoxytrityl group provides hitherto unreported 3'-difluoromethylene-3'-deoxythymidine (6), a new analogue of AZT.
Synthetic and mechanistic aspects of halo-F-methylphosphonates
作者:Richard M. Flynn、Donald J. Burton
DOI:10.1016/j.jfluchem.2011.05.034
日期:2011.10
The synthesis of a variety of new halo-F-methylphosphonates has been achieved by a Michaelis–Arbuzov type reaction between a halo-F-methane and a trialkyl phosphite. This synthesis has proved to be of wide scope and utility for the high yield preparation of a number of heretofore unknown compounds. The 1H, 19F, 13C and 31P NMR spectroscopic properties are reported in detail. The mechanism for the formation
C12 Modified erythromycin macrolides and ketolides having antibacterial activity
申请人:——
公开号:US20030125266A1
公开(公告)日:2003-07-03
Antimicrobial macrolide compounds are provided having formulas II:
1
as well as pharmaceutically acceptable salts, esters or prodrugs thereof; pharmaceutical compositions comprising such compounds; methods of treating bacterial infections by the administration of such compounds; and processes for the preparation of the compounds.
New Method for the Preparation of Some 2′- and 3′-Trifluoromethyl-2′,3′-dideoxyuridine Derivatives
作者:Pawel J Serafinowski、Catherine A Brown
DOI:10.1016/s0040-4020(99)01007-8
日期:2000.1
corresponding 2′- and 3′-difluoromethylene derivatives3 and 11. Attempted removal of the 3′- and 2′-O-trimethylsilylethoxymethyl (SEM) groups from compounds 3 and 11, with tetrabutylammonium fluoride in tetrahydrofuran (THF), resulted in fluorination at the unsaturated difluoromethylene carbon with loss of the SEM group and formation of hitherto unreported 2′,3′-didehydro-2′,3′-dideoxy-5′-O-dimeth
Antimicrobial macrolide and ketolide compounds are provided having formulas XII:
as well as pharmaceutically acceptable salts, esters or prodrugs thereof; pharmaceutical compositions comprising such compounds; methods of treating bacterial infections by the administration of such compounds; and processes for the preparation of the compounds.