由3-氰基-6-三氟甲基-2-(1 H)吡啶酮(2)依次制备3-氨基-6-(三氟甲基)呋喃[2,3 - b ]吡啶-2-碳酰肼(5)通过选择性的O烷基化,Thorpe–Ziegler环化,然后与水合肼反应。2-碳酰肼(5)在不同的反应温度下进一步与脂肪酸反应,形成一系列新的N-酰基氟[2,3 - b ]吡啶-2-碳酰肼(6)和吡啶基[3',2': 4,5]呋喃[3,2- d ]嘧啶衍生物(7)。所有化合物6和7对浓度为10 µM的乳腺癌MD Anderson-Metastatic Breast(MDA-MB)231(侵袭性)细胞系进行了细胞毒活性筛选。化合物6a,6b和6c显示出有希望的活性。
[EN] MODULATORS OF HSD17B13 AND METHODS OF USE THEREOF<br/>[FR] MODULATEURS DE HSD17B13 ET LEURS PROCÉDÉS D'UTILISATION
申请人:REGENERON PHARMA
公开号:WO2021003295A1
公开(公告)日:2021-01-07
The disclosure relates to compounds and pharmaceutical compositions capable of modulating the hydroxysteroid 17-beta dehydrogenase (HSD17B) family member proteins including inhibiting the HSD17B member proteins, e.g. HSD17B13. The disclosure further relates to methods of treating liver diseases, disorders, or conditions with the compounds and pharmaceutical compositions disclosed herein, in which the HSD17B family member protein plays a role.
PYRIDINECARBOXAMIDES, USEFUL-PLANT-PROTECTING COMPOSITION COMPRISING THEM AND PROCESSES FOR THEIR PREPARTION AND THEIR USE
申请人:Ziemer Frank
公开号:US20080269059A1
公开(公告)日:2008-10-30
Compounds of the formula (I), or salts thereof,
in which R
1
to R
4
are as defined in formula (I) of claim
1
are suitable as useful-plant-protecting agents for reducing or preventing harmful effects of agrochemicals on the useful plants and their method of preparation are described.
[reaction: see text] A Mg(0)/Me(3)SiCl system was found to be effective for the preparation of difluoro Danishefsky's dienes 2, which involves selective C-F bond cleavage of trifluoromethyl ketones 3. Subsequent hetero Diels-Alder reactions of 2 with aldehydes and imines gave a variety of fluorinated six-membered heterocycles.
Reactions of CF<sub>3</sub>-enones with arenes under superelectrophilic activation: a pathway to trans-1,3-diaryl-1-CF<sub>3</sub>-indanes, new cannabinoid receptor ligands
作者:Roman O. Iakovenko、Anna N. Kazakova、Vasiliy M. Muzalevskiy、Alexander Yu. Ivanov、Irina A. Boyarskaya、Andrea Chicca、Vanessa Petrucci、Jürg Gertsch、Mikhail Krasavin、Galina L. Starova、Andrey A. Zolotarev、Margarita S. Avdontceva、Valentine G. Nenajdenko、Aleksander V. Vasilyev
DOI:10.1039/c5ob01072a
日期:——
CF3-enones react with arenes in TfOH to givetrans-1,3-diaryl-1-CF3indanes.
CF3-烯酮在TfOH中与芳烃反应,生成trans-1,3-二芳基-1-CF3茚烷。
Synthesis of novel hydrazone and azole functionalized pyrazolo[3,4-b]pyridine derivatives as promising anticancer agents
A series of novel pyrazolo[3,4-b]pyridine based target compounds were synthesized starting from the key intermediate ethyl 2-(3-amino-6-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetate 5 on reaction with hydrazine hydrate followed by reaction with different aldehydes, acid chlorides and isothiocyanates to form hydrazones 7, oxadiazoles 8, 1,2,4 triazoles 10 and thiadiazoles 11 respectively