Inhibition of hedgehog signaling by stereochemically defined des-triazole itraconazole analogues
摘要:
Dysregulation of the hedgehog (Hh) signaling pathway is associated with cancer occurrence and development in various malignancies. Previous structure-activity relationships (SAR) studies have provided potent Itraconazole (ITZ) analogues as Hh pathway antagonists. To further expand on our SAR for the ITZ scaffold, we synthesized and evaluated a series of compounds focused on replacing the triazole. Our results demonstrate that the triazole region is amenable to modification to a variety of different moieties; with a single methyl group representing the most favorable substituent. In addition, nonpolar substituents were more active than polar substituents. These SAR results provide valuable insight into the continued exploration of ITZ analogues as Hh pathway antagonists.
NHC-Catalyzed ε-Umpolung via <i>p</i>-Quinodimethanes and Its Nucleophilic Addition to Ketones
作者:Lei Dai、Song Ye
DOI:10.1021/acscatal.9b04409
日期:2020.1.17
An unprecedented NHC-catalyzed generation of p-quinodimethanes via ε-umpolung of 4-(chloromethyl)benzaldehydes and the following ε-addition to active ketones was developed. A series of active ketones, such as trifluoromethyl ketones and 1,2-dicarbonyl compounds, worked well for the reaction, giving the corresponding trifluoromethyl alcohols and α-hydroxyl carbonyl compounds in good yields.
Compounds of the general formula ##STR1## or a pharmaceutically or agriculturally acceptable acid addition salt thereof wherein R is 5-chloro-2-pyridyl, phenyl or phenyl substituted by from one to three substituents, each independently selected from F, Cl, Br, I, CF.sub.3, (C.sub.1 -C.sub.4)alkyl and (C.sub.1 -C.sub.4)alkoxy; and n is zero or an integer from 1 to 5; method for their use in combatting fungal infections in plants, seeds and animals, including humans; and pharmaceutical and agricultural compositions containing them.
[EN] NEW HETEROCYCLIC COMPOUNDS AS MONOACYLGLYCEROL LIPASE INHIBITORS<br/>[FR] NOUVEAUX COMPOSÉS HÉTÉROCYCLIQUES UTILISÉS EN TANT QU'INHIBITEURS DE MONOACYLGLYCÉROL LIPASE
申请人:HOFFMANN LA ROCHE
公开号:WO2020035425A1
公开(公告)日:2020-02-20
The invention provides new heterocyclic compounds having the general formula (I) wherein A, L, X, m, n, R1 and R2 are as described herein, compositions including the compounds, processes of manufacturing the compounds, methods of using the compounds and methods of determining the monoacylglycerol lipase (MAGL) inhibitory activity of the compounds.
[EN] NEW HETEROCYCLIC COMPOUNDS AS MONOACYLGLYCEROL LIPASE INHIBITORS<br/>[FR] NOUVEAUX COMPOSÉS HÉTÉROCYCLIQUES EN TANT QU'INHIBITEURS DE MONOACYLGLYCÉROL LIPASE
申请人:HOFFMANN LA ROCHE
公开号:WO2020035424A1
公开(公告)日:2020-02-20
The invention provides new heterocyclic compounds having the general formula (I) wherein A, L, X, m, n, R1 and R2 are as described herein, compositions including the compounds, processes of manufacturing the compounds and methods of using the compounds.
Chiral Phosphoric-Acid-Catalyzed Regioselective and Enantioselective C7-Friedel–Crafts Alkylation of 4-Aminoindoles with Trifluoromethyl Ketones
作者:Lu Cai、Yunlong Zhao、Tongkun Huang、Shanshui Meng、Xian Jia、Albert S. C. Chan、Junling Zhao
DOI:10.1021/acs.orglett.9b00821
日期:2019.5.17
trifluoromethyl ketones promoted by a spirocyclic phosphoric acid was developed. This strategy was applicable to various substituted trifluoromethyl ketones and 4-aminoindole derivatives, affording the corresponding C7-functionalized indole derivatives, bearing a pharmaceutically interesting trifluoromethylated tertiary alcohol scaffold, in 21%–98% yields with up to >99% enantiomeric excess (ee).