[11C]-(+)-a-DTBZ has been used as a marker of dopaminergic terminal densities in human striatum and expressed in islet beta cells in the pancreas. We aimed to establish a fully automated and simple procedure for the synthesis of [11C]-(+)-a-DTBZ for routine applications. [11C]-(+)-a-DTBZ was synthesized from a 9-hydroxy precursor in acetone and potassium hydroxide with [11C]-methyl triflate and was purified by solid phase extraction using a Vac tC-18 cartridge. Radiochemical yields based on [11C]-methyl triflate (corrected for decay) were 82.3% ± 3.6%, with a specific radioactivity of 60 GBq/mmol. Time elapsed was less than 20 min from end of bombardment to release of the product for quality control.
Inhibitory potential of some chalcones on cathepsins B, H and L
作者:Shweta Garg、Neera Raghav
DOI:10.1039/c5ra12856k
日期:——
Cathepsins, intracellular proteases, are known to be involved in a number of physiological processes such as degradation of extracellular proteins, prohormone processing, progressions of atherosclerosis etc.
卡特普辛是细胞内蛋白酶,已知参与多种生理过程,如降解细胞外蛋白、前激素加工、动脉粥样硬化进展等。
[EN] CHALCONES AS ENHANCER OF ANTIMICROBIAL AGENTS<br/>[FR] CHALCONES EN TANT QU'AMPLIFICATRICES D'AGENTS ANTIMICROBIENS
申请人:COLGATE PALMOLIVE CO
公开号:WO2011075136A1
公开(公告)日:2011-06-23
Compounds are described that are effective in enhancing the efficacy of antimicrobial agents. Also described are methods of using such compounds and compositions that include such compounds. The composition includes a chalcone compound and, optionally, an antimicrobial agent.
Compounds are described that are effective in enhancing the efficacy of antimicrobial agents. Also described are methods of using such compounds and compositions that include such compounds. The composition includes a chalcone compound and, optionally, an antimicrobial agent.
N-Containing heterocyclic compounds, processes for the preparation thereof and composition comprising the same
申请人:FUJISAWA PHARMACEUTICAL CO., LTD.
公开号:EP0387070A2
公开(公告)日:1990-09-12
Compounds of the formula:
wherein R¹ is aryl optionally substituted with substituent(s) selected from the group consisting of nitro, cyano, halogen, halo(lower)alkyl, lower alkoxy, lower alkylsulfonyl, lower alkylsulfonylamino, amino, lower alkanoyl, sulfamoyl and lower alkylsulfamoyl; or a heterocyclic group optionally substituted with substituent(s) selected from the group consisting of nitro, cyano, lower alkanoyl and hydroxy(lower)alkyl;
R² is cyano; lower alkanoyl; carboxy; esterified carboxy; hydroxy(lower)alkyl; carbamoyl substituted with heterocyclic(lower)alkyl; amino optionally substituted with substituent(s) selected from the group consisting of heterocyclic(lower)alkanoyl and halo(lower)alkanoyl; or N-containing heterocycliccarbonyl optionally substituted with lower alkyl;
R³ is lower alkyl; and
R⁴ is aryl optionally substituted with substituent(s) selected from the group consisting of nitro, hydroxy and halogen; carboxy; esterified carboxy; a heterocyclic group; lower alkyl; or carbamoyl substituted with heterocyclic(lower)alkyl;
provided that R⁴ is aryl substituted with substituent(s) selected from the group consisting of nitro and hydroxy ; carboxy; esterified carboxy; a heterocyclic group; lower alkyl; or carbamoyl substituted with heterocyclic(lower)alkyl; when R¹ is phenyl substituted with nitro, and its pharmaceutically acceptable salt.
Processes for the preparation of these compounds are also described, together with pharmaceutical compositions containing the compounds as an active ingredient. The compounds are useful for the treatment of ischemic diseases and reperfusion injury, and as cardioprotective agents.