Benzoquinazoline inhibitors of thymidylate synthase: enzyme inhibitory activity and cytotoxicity of some 3-amino- and 3-methylbenzo[f]quinazolin-1(2H)-ones
摘要:
The synthesis and thymidylate synthase (TS) inhibitory activity of a series of simple benzo-[f]-quinazolin-1(2H)-ones are described. Fully aromatic 3-amino compounds with compact lipophilic substituents in the 9-position were found to have I50 values as low as 20 nM on the isolated enzyme, and represent the first examples of potent, folate-based TS inhibitors that completely lack any structural feature corresponding to the (p-aminobenzoyl)glutamate moiety of the cofactor. A number of the compounds also showed moderate growth inhibitory activity against a human colon adenocarcinoma cell line (SW480), with IC50 values as low as 2 muM.
[EN] FUSED [1,2,4]THIADIAZINE DERIVATIVES WHICH ACT AS KAT INHIBITORS OF THE MYST FAMILY<br/>[FR] DÉRIVÉS DE [1,2,4]THIADIAZINE FUSIONNÉS AGISSANT EN TANT QU'INHIBITEURS DE KAT DE LA FAMILLE DES MYST
申请人:CTXT PTY LTD
公开号:WO2019043139A1
公开(公告)日:2019-03-07
A compound of formula (I): which inhibits the activity of one or more KATs of the MYST family, i.e., TIP60, KAT6B, MOZ, HBO1 and MOF.
Inhibition of cholesterol side-chain cleavage. 3. 22-Azacholesterol analogs bearing aryl-substituted side chains
作者:Norma G. Delaney、Matthias C. Lu
DOI:10.1021/jm00141a003
日期:1981.9
potent inhibitory activity of 22-azacholesterol analogue 2a, in which the (3-methylbutyl)amino sidechain had been replaced by the (phenylethyl)amino sidechain, on the conversion of cholesterol to pregnenolone prompted the synthesis and enzymatic studies of two series of 22-azacholesterol analogues bearing (arylalkyl)amino and (arylalkyl)amino sidechains. The potent inhibitory activity of both the amines
Cobalt Catalyzed α-Hydroxylation of Arylacetic Acid Equivalents with Dioxygen
作者:Rupali Dasharath Shinde、Anil Rajendra Paraskar、Jogendra Kumar、Eliza Ghosh、Tapan Kanti Paine、Sukalyan Bhadra
DOI:10.1021/acs.joc.4c00708
日期:2024.7.5
A cobalt catalyst, under oxidative conditions, facilitates the single electron transfer process in N-pyridyl arylacetamides to form α-carbon-centered radicals that readily react with molecular oxygen, giving access to mandelic acid derivatives. In contrast to the known benzylic hydroxylation approaches, this approach enables chemo- and regioselective hydroxylation at a benzylic position adjacent to
Optimizing Small Molecule Inhibitors of Calcium-Dependent Protein Kinase 1 to Prevent Infection by Toxoplasma gondii
作者:Sebastian Lourido、Chao Zhang、Michael S. Lopez、Keliang Tang、Jennifer Barks、Qiuling Wang、Scott A. Wildman、Kevan M. Shokat、L. David Sibley
DOI:10.1021/jm4001314
日期:2013.4.11
Toxoplasma gondii is sensitive to bulky pyrazolo [3,4-d] pyrimidine (PP) inhibitors due to the presence of a Gly gatekeeper in the essential calcium dependent protein kinase 1 (CDPK1). Here we synthesized a number of new derivatives of 3-methyl-benzyl-PP (3-MB-PP, or 1). The potency of PP analogues in inhibiting CDPK1 enzyme activity in vitro (low nM IC50 values) and blocking parasite growth in host cell monolayers in vivo (low mu M EC50 values) were highly correlated and occurred in a CDPK1-specific manner. Chemical modification of the PP scaffold to increase half-life in the presence of microsomes in vitro led to identification of compounds with enhanced stability while retaining activity. Several of these more potent compounds were able to prevent lethal infection with T. gondii in the mouse model. Collectively, the strategies outlined here provide a route for development of more effective compounds for treatment of toxoplasmosis and perhaps related parasitic diseases.
Nonpeptide Inhibitors of Measles Virus Entry
作者:Aiming Sun、Andrew Prussia、Weiqiang Zhan、Ernest E. Murray、Joshua Doyle、Li-Ting Cheng、Jeong-Joong Yoon、Eugene V. Radchenko、Vladimir A. Palyulin、Richard W. Compans、Dennis C. Liotta、Richard K. Plemper、James P. Snyder
DOI:10.1021/jm0602559
日期:2006.8.1
Measles virus (MV) is one of the most infectious pathogens known. Despite the existence of a vaccine, over 500 000 deaths/year result from MV or associated complications. Anti-measles compounds could conceivably reverse these statistics. Previously, we described a homology model of the MV fusion protein trimer and a putative binding site near the head-neck region. The resulting model permitted the identification of two nonpeptidic entry inhibitors. Here, we present the design, synthesis, and bioevaluation of several series of fusion inhibitors and describe their structure-activity relationships (SAR). Five simply substituted anilides show low-mu M blockade of the MV, one of which (AS-48) exhibits IC50 0.6-3.0 mu M across a panel of wild-type MV strains found in the field. Molecular field topology analysis (MFTA), a 2D QSAR approach based on local molecular properties (atomic charges, hydrogen-bonding capacity and local lipophilicity), applied to the anilide series suggests structural modifications to improve potency.