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 The initial six-step development route from 5-fluorouracil has been superseded by a four-step synthesis involving fluorination of methyl 3-oxopentanoate and cyclisation with formamidine acetate.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] AZOLE COMPOUNDS AS PIM INHIBITORS<br/>[FR] COMPOSÉS D'AZOLE UTILISÉS EN TANT QU'INHIBITEURS DES PIM
申请人:AMGEN INC
公开号:WO2012129338A1
公开(公告)日:2012-09-27
The invention relates to bicyclic compounds of formulas I and Ia, and salts thereof. In some embodiments, the invention relates to inhibitors or modulators of Pim-1 and/or Pim-2, and/or Pim-3 protein kinase activity or enzyme function. In still further embodiments, the invention relates to pharmaceutical compositions comprising compounds disclosed herein, and their use in the prevention and treatment of Pim kinase related conditions and diseases, preferably cancer.
The present invention provides compounds of Formula I:
wherein A is selected from the group consisting of;
R
1
is H or F;
R
2
is H, —CH
2
OH, C
1
-C
3
alkyl,
R
3
is H, F, or CN;
R
4
is H, F; or CN; and
R
5
is H, —CH
3
, or —OCH
3
;
or a pharmaceutically acceptable salt thereof.
The present invention provides compounds of Formula I useful as BACE inhibitors in the treatment of e.g. Alzheimer's disease : wherein A is selected from the group consisting of; of; R1 is H or F; R2 is H, -OCH3, C1-C3 alkyl,; R3 is H, -CH3, or -OCH3; and R4 is H or F; or a pharmaceutically acceptable salt thereof.
Overcoming Time-Dependent Inhibition (TDI) of Cytochrome P450 3A4 (CYP3A4) Resulting from Bioactivation of a Fluoropyrimidine Moiety
作者:Mihirbaran Mandal、Kaushik Mitra、Diane Grotz、Xinjie Lin、Jairam Palamanda、Pramila Kumari、Alexei Buevich、John P. Caldwell、Xia Chen、Kathleen Cox、Leonard Favreau、Lynn Hyde、Matthew E. Kennedy、Reshma Kuvelkar、Xiaoxiang Liu、Robert D. Mazzola、Eric Parker、Diane Rindgen、Edward Sherer、Hongwu Wang、Zhaoning Zhu、Andrew W. Stamford、Jared N. Cumming
DOI:10.1021/acs.jmedchem.8b01326
日期:2018.12.13
Herein we describe structure–activity relationship (SAR) and metabolite identification (Met-ID) studies that provided insight into the origin of time-dependent inhibition (TDI) of cytochromeP450 3A4 (CYP3A4) by compound 1. Collectively, these efforts revealed that bioactivation of the fluoropyrimidine moiety of 1 led to reactive metabolite formation via oxidative defluorination and was responsible
The present teachings relate to piperazine metabotropic glutamate receptor 5 (mGluR5) negative allosteric modulators having Formula I:
wherein the constituent variables are as defined herein. The present teachings further relate to methods for the preparation of the compounds, and to methods for using the compounds for treatment of diseases and disorders including schizophrenia, paranoia, depression, manic-depressive illness and anxiety.