Identification of Less Lipophilic Riminophenazine Derivatives for the Treatment of Drug-Resistant Tuberculosis
摘要:
Clofazimine (CFZ), a member of the riminophenazine class, has been studied in clinical trials for the treatment of multidrug-resistant tuberculosis (MDR-TB). CFZ has several side effects which can be attributed to its extremely high lipophilicity. A series of novel riminophenazine analogues bearing a C-2 pyridyl substituent was designed and synthesized with the goal of maintaining potent activity against Mycobacterium tuberculosis (M. tuberculosis) while improving upon its safety profile by lowering the lipophilicity. All compounds were evaluated for their in vitro activity and cytotoxicity. The results demonstrated that many new compounds had potent activity against M. tuberculosis with MICs of less than 0.03 mu g/mL and low cytotoxicity with IC50 values greater than 64 mu g/mL. Some compounds were tested for in vivo efficacy against MDR-TB in an experimental mouse infection model. Two compounds demonstrated equivalent or better efficacy than CFZ in this model with significantly reduced skin discoloration potential.
Identification of Less Lipophilic Riminophenazine Derivatives for the Treatment of Drug-Resistant Tuberculosis
摘要:
Clofazimine (CFZ), a member of the riminophenazine class, has been studied in clinical trials for the treatment of multidrug-resistant tuberculosis (MDR-TB). CFZ has several side effects which can be attributed to its extremely high lipophilicity. A series of novel riminophenazine analogues bearing a C-2 pyridyl substituent was designed and synthesized with the goal of maintaining potent activity against Mycobacterium tuberculosis (M. tuberculosis) while improving upon its safety profile by lowering the lipophilicity. All compounds were evaluated for their in vitro activity and cytotoxicity. The results demonstrated that many new compounds had potent activity against M. tuberculosis with MICs of less than 0.03 mu g/mL and low cytotoxicity with IC50 values greater than 64 mu g/mL. Some compounds were tested for in vivo efficacy against MDR-TB in an experimental mouse infection model. Two compounds demonstrated equivalent or better efficacy than CFZ in this model with significantly reduced skin discoloration potential.
High-energy triplet host materials, luminescent layer comprising the same, and organic electroluminescent device comprising the luminescent layer
申请人:Anzenbacher, Jr. Pavel
公开号:US08785002B1
公开(公告)日:2014-07-22
The present invention includes high triplet energy compositions of matter, methods of their manufacture, devices incorporating the compositions of matter, and methods of using those compositions of matter and devices. The devices incorporating the high triplet energy compositions of matter include electroluminescence devices including organic light-emitting diodes (OLEDs). The present invention also includes methods of using the compositions of matter, such as by operating the devices of the present invention incorporating them, to provide light through electroluminescence, as well as obtaining and/or operating devices of the present invention through the application of electrical energy or potential, as well as methods of providing light through electroluminescence through their operation.
Formal propagation of (hetero)arylamine is achieved via a one-pot Buchwald–Hartwig C–N cross-coupling and nitro reduction sequence, enabling a rapid modular synthesis of diverse amino-di(hetero)arylamines from (hetero)arylamines and halogenated nitrobenzenes. Various functionalized aromatic amines with different electronic and steric environments can be efficiently prolongated to formally incorporate
[EN] TRANSCRIPTIONAL ENHANCED ASSOCIATE DOMAIN (TEAD) TRANSCRIPTION FACTOR INHIBITORS AND USES THEREOF<br/>[FR] INHIBITEURS DU FACTEUR DE TRANSCRIPTION À DOMAINE ASSOCIÉ TRANSCRIPTIONNEL AMÉLIORÉ (TEAD) ET LEURS UTILISATIONS