Novel 1,4-naphthoquinone-based sulfonamides: Synthesis, QSAR, anticancer and antimalarial studies
摘要:
A novel series of 1,4-naphthoquinones (33-44) tethered by open and closed chain sulfonamide moieties were designed, synthesized and evaluated for their cytotoxic and antimalarial activities. All quinone-sulfonamide derivatives displayed a broad spectrum of cytotoxic activities against all of the tested cancer cell lines including HuCCA-1, HepG2, A549 and MOLT-3. Most quinones (33-36 and 38-43) exerted higher anticancer activity against HepG2 cell than that of the etoposide. The open chain analogs 36 and 42 were shown to be the most potent compounds. Notably, the restricted sulfonamide analog 38 with 6,7-dimethoxy groups exhibited the most potent antimalarial activity (IC50 = 2.8 mu M). Quantitative structure activity relationships (QSAR) study was performed to reveal important chemical features governing the biological activities. Five constructed QSAR models provided acceptable predictive performance (R-cv, 0.5647-0.9317 and RMSEcv 0.1231-0.2825). Four additional sets of structurally modified compounds were generated in silico (34a-34d, 36a-36k, 40a-40d and 42a-42k) in which their activities were predicted using the constructed QSAR models. A comprehensive discussion of the structure activity relationships was made and a set of promising compounds (i.e., 33, 36, 38, 42, 36d, 36f, 42e, 42g and 42f) was suggested for further development as anticancer and antimalarial agents. (C) 2015 Elsevier Masson SAS. All rights reserved.
[EN] PYRRAZOLO-PYRIMIDINE DERIVATIVES<br/>[FR] DERIVES DE PYRRAZOLO-PYRIMIDINE
申请人:HOFFMANN LA ROCHE
公开号:WO2005123738A1
公开(公告)日:2005-12-29
The invention relates to compounds of formula (I) wherein R1, R2, R3, R4, R5 and p are as defined in the description and claims as well as to pharmaceutically acceptable salts thereof per se and as pharmaceutically active substances, their manufacture, medicaments based on a compound in accordance with the invention and their production, as well as the use of the compounds in accordance with the invention in the control or prevention of illnesses of the aforementioned kind, and, respectively, for the production of corresponding medicaments.
[EN] PROBES FOR DETECTION OF COPPER<br/>[FR] SONDES POUR LA DÉTECTION DE CUIVRE
申请人:UNIV CALIFORNIA
公开号:WO2020226972A1
公开(公告)日:2020-11-12
The present disclosure provides Förster resonance energy transfer (FRET)-based probes for detecting copper, e.g., for detecting Cu(I) in live cells. The present disclosure provides methods for detecting copper, e.g., for detecting Cu(I) in live cells, using a FRET-based probe of the present disclosure.
The invention relates to compounds of formula (I)
wherein R
1
, R
2
, R
3
, R
4
, R
5
and p are as defined in the description and to pharmaceutically acceptable salts thereof, to pharmaceutical compositions containing such compounds, to the manufacture of such compounds and compositions, and to methods of treating or preventing acute and/or chronic central nervous system disorders by administering such compounds.