Process Development of Voriconazole: A Novel Broad-Spectrum Triazole Antifungal Agent
摘要:
In the synthesis of (2R,3S)-2-(2,4-difluorophenyl)-3-(5-fluoro-4-pyrimidinyl)-1-(1H-1,2,4-triazol-1-yl)-2-butanol (voriconazole), the relative stereochemistry is set in the addition of a 4-(1-metalloethyl)-5-fluoropyrimidine derivative to 1-(2,4-difluorophenyl)-2-(1H-1 ,2,4-triazol-1-yl)-1-ethanone, The diastereo-control of this reaction has been examined by variation of pyrimidine substitution pattern and by changes in the metalation and reaction conditions. Excellent diastereoselection (12: ii is obtained using an organozinc derivative of 6-(1-bromoethyl)-4-chloro-5-fluoropyriminidine. lifter removal cf the chlorine from the pyrimidine ring? the absolute stereochemistry of voriconazole is established via a diastereomeric salt resolution process using (1R)-10 camphorsulfonic acid. Synthetic routes to the pyrimidine partner have also been evaluated. The initial six-step development route from 5-fluorouracil has been superseded by a four-step synthesis involving fluorination of methyl 3-oxopentanoate and cyclisation with formamidine acetate.
[EN] PYRIDINONE DERIVATIVES AS SELECTIVE CYTOTOXIC AGENTS AGAINST HIV INFECTED CELLS<br/>[FR] DÉRIVÉS DE PYRIDINONE UTILISÉS EN TANT QU'AGENTS CYTOTOXIQUES SÉLECTIFS CONTRE DES CELLULES INFECTÉES PAR LE VIH
申请人:MERCK SHARP & DOHME
公开号:WO2020236692A1
公开(公告)日:2020-11-26
The present disclosure is directed to pyridinone derivatives of Formula I and their use for selectively killing HIV infected GAG-POL expressing cells without concomitant cytotoxicity to HIV nave cells, and for the treatment of infection by HIV, or for the treatment, prophylaxis or delay in the onset or progression of AIDS or AIDS Related Complex (ARC).
[EN] INDOLE AND AZAINDOLE MODULATORS OF THE ALPHA 7 NACHR<br/>[FR] MODULATEURS INDOLES ET AZAINDOLES DU NACHR-?7
申请人:PROXIMAGEN LTD
公开号:WO2011045353A1
公开(公告)日:2011-04-21
This invention relates to modulation of the α7 nicotinic acetylcholine receptor (nAChR) by a compound of formula (I) or a pharmaceutically acceptable salt thereof.
这项发明涉及利用式(I)的化合物或其药用可接受盐对α7尼古丁乙酰胆碱受体(nAChR)进行调节。
Triazole antifungal agents
申请人:Pfizer Inc.
公开号:US05278175A1
公开(公告)日:1994-01-11
The invention provide antifungal compounds of the formula: ##STR1## and pharmaceutically acceptable salts thereof, wherein R is phenyl substituted by 1 to 3 substituents each independently selected from halo, --CF.sub.3 and --OCF.sub.3 ; R.sup.1 is C.sub.1 -C.sub.4 alkyl; R.sup.2 is H or C.sub.1 -C.sub.4 alkyl; X is CH or N; and Y is F or Cl.
Preparation of triazoles by organometallic addition to ketones and intermediates therefor
申请人:Pfizer, Inc.
公开号:US06586594B1
公开(公告)日:2003-07-01
A process for the preparation of a compound of the formula:
or an acid addition or base salt thereof, wherein R is phenyl optionally substituted by 1 to 3 substituents each independently selected from halo and trifluoromethyl; R1 is C1-C6 alkyl; and “Het” is pyrimidinyl optionally substituted by 1 to 3 substituents each independently selected from C1-C4 alkyl, C1-C4 alkoxy, halo, oxo, benzyl and benzyloxy, comprising reacting a compound of the formula:
with a compound of the formula
wherein X is chloro, bromo or iodo, the reaction taking place in the presence of zinc; at least one of iodine or a Lewis acid; and an aprotic organic solvent: optionally further reacting the resulting compound with an acid or base to form the corresponding acid addition or base salt thereof.
PROCESS FOR PREPARING VORICONAZOLE BY USING NEW INTERMEDIATES
申请人:Kwon Hyuk Chul
公开号:US20130005973A1
公开(公告)日:2013-01-03
Provided is a process for preparing Voriconazole represented by Chemical Formula 1. More particularly, the process for preparing Voriconazole of Chemical Formula 1 includes: carrying out the Reformatsky-type coupling reaction between a ketone derivative of Chemical Formula 4 and a pyrimidine derivative of Chemical Formula 5 to obtain a compound of Chemical Formula 3; reacting the substituents halo and oxysulfonyl with a hydrogen donor to obtain racemic Voriconazole of Chemical Formula 2; and carrying out optical isolation of the racemic Voriconazole by adding an adequate optically active acid thereto to obtain Voriconazole having high optical purity with high cost-efficiency and high yield.