[EN] 1-(6-MEMBERED AZO-HETEROCYCLIC)-2,5-DIHYDRO-1H-PYRROL-2-ONE DERIVATIVES AS ANTI-HEPATITIS C VIRUS, THE PHARMACEUTICAL COMPOSITION THEREOF AND THEIR THERAPEUTIC USE [FR] DÉRIVÉS DE 1-(AZO-HÉTÉROCYCLIQUE À 6 CHAÎNONS)-2,5-DIHYDRO-1H-PYRROL-2-ONE À TITRE D'ANTI-VIRUS DE L'HÉPATITE C, COMPOSITION PHARMACEUTIQUE LES CONTENANT ET LEUR UTILISATION THÉRAPEUTIQUE
[EN] METHOD FOR THE PREPARATION OF FUNCTIONALIZED TRIHALOMETHOXY SUBSTITUTED PYRIDINES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE PYRIDINES SUBSTITUÉES PAR UN RÉSIDU TRIHALOGÉNOMÉTHOXY FONCTIONNALISÉES
申请人:BAYER CROPSCIENCE AG
公开号:WO2010040461A1
公开(公告)日:2010-04-15
The present invention pertains to a process for the preparation of functionalized trihalomethoxypyridines of formula (I) comprising reacting hydroxypyridines with thiophosgene in the presence of a base; reacting the obtained chlorothionoformiates with elemental chlorine and finally converting trichloromethoxy pyridines to trihalomethoxy pyridines using a fluoride source.
Fluorine in Drug Design: A Case Study with Fluoroanisoles
作者:Li Xing、David C. Blakemore、Arjun Narayanan、Ray Unwalla、Frank Lovering、R. Aldrin Denny、Huanyu Zhou、Mark E. Bunnage
DOI:10.1002/cmdc.201402555
日期:2015.4
Anisole and fluoroanisoles display distinct conformational preferences, as evident from a survey of their crystal structures. In addition to altering the free ligand conformation, various degrees of fluorination have a strong impact on physicochemical and pharmacokinetic properties. Analysis of anisole and fluoroanisole matched molecular pairs in the Pfizer corporate database reveals interesting trends:
Tri- and difluoromethoxylated N-based heterocycles − Synthesis and insecticidal activity of novel F3CO- and F2HCO-analogues of Imidacloprid and Thiacloprid
作者:Gregory Landelle、Etienne Schmitt、Armen Panossian、Jean-Pierre Vors、Sergiy Pazenok、Peter Jeschke、Oliver Gutbrod、Frédéric R. Leroux
DOI:10.1016/j.jfluchem.2017.08.006
日期:2017.11
The preparation of F3CO- and F2HCO-analogues of Imidacloprid and Thiacloprid and the evaluation of their biological activity have been performed. For this purpose, a first synthetic approach allowed the preparation of a desired F3CO-containing key intermediate. To allow a facile access to the second F2HCO-containing key intermediate, the difluoromethylation of hydroxylated N-based heterocycles has