Showing papers in "Bioorganic & Medicinal Chemistry in 2006"

TL;DR: A series of 2,4-dichloro-5-fluorophenyl bearing Mannich base was prepared from triazole Schiff bases by aminomethylation with formaldehyde and secondary/substituted primary amines to show promising antibacterial and antifungal activity.

TL;DR: A homology model of the homo-tetrameric pore domain of HERG is created using the crystal structure of the bacterial potassium channel, KvAP, as a template and key aromatic groups of the blockers are predicted to form multiple simultaneous ring stacking and hydrophobic interactions among the eight aromatic residues lining the pore.

TL;DR: Novel chalcones and bis-chalcones containing boronic acid moieties inhibited the growth of the human breast cancer cell lines at low micromolar to nanomolar concentrations and exhibited more potent inhibition of colon cancer cells expressing wild-type p53 than of an isogenic cell line that was p53-null.

TL;DR: The results suggest that the 22 nt in K(+) solution exists as a mixture of mixed-parallel/antiparallel and chair-type G-quadruplex, and the possible implications of the structure in understanding higher-order telomeric DNA structure and T-loop formation are discussed.

TL;DR: Thermodynamic analysis and computational modeling indicated that GEA could bind to the site I of HSA and hydrophobic interaction was the major acting force for the second type of binding site, which was in agreement with the thermodynamic analysis.

TL;DR: Four classes of UK-1 analogues were synthesized and their cytotoxicity testing against human A-549, BFTC-905, RD, MES-SA, and HeLa carcinoma cell lines was determined, revealing that these analogues are potent against the cancer cell lines.

TL;DR: This work illustrates how virtual screening can identify a diverse set of ligands which bind to the targeted site, and the structural models for these ligands in the Chk1 ATP-binding site will facilitate further medicinal chemistry efforts targeting this kinase.

TL;DR: A series of N-(acridin-9-yl)-4-(benzo[d]imidazol/oxazol-2-yl) benzamides has been synthesized by the condensation of 9-aminoacridine derivatives with benzimidzole or benzoxazole derivatives, showing good anti-inflammatory activity and good analgesic activity.

TL;DR: The 5-arylidene derivatives showed an antibacterial efficacy considerably greater than that of the parent 2-(thiazol-2-ylimino)thiazolidin-4-one 3, suggesting that the substituted and unsubstituted 5- Darylidene moiety plays an important role in enhancing the antimicrobial properties of this class of compounds.

TL;DR: The goal of this review is to highlight the wide range of biological activities displayed by purines, with particular emphasis on new purine-based agents which find potential application as chemical-biology tools and/or therapeutic agents.

TL;DR: The correlation between RP-HPLC retention parameter log K (the logarithm of capacity factor K) and various calculated log P data is shown and the relationships between the lipophilicity and the chemical structure of the studied compounds are discussed as well.

TL;DR: A series of pyridine, pyrane, and pyrimidine derivatives (2-11) were newly synthesized using nitrobenzosuberone 1 as a starting material and exhibited better in vitro antitumor activities at low concentration against the used human tumor cell lines.

TL;DR: None of the natural or synthetic compounds tested affected the proliferation of epithelial cells derived from normal mammary gland of mice or fibroblastic cells from mouse embryo, suggesting a selective action against tumor cells.

TL;DR: The newly synthesized compounds were found to possess anticonvulsant and anti-inflammatory activities with the same mechanism of action of selective COX-2 inhibitors.

TL;DR: In general, the oxidized pyrazoles displayed better antitumor activity than their parent pyrazoline analogs, whereas the benzenesulfonamides and the N1, N3-disubstituted sulfonylureas showed significant better antitUMor spectrum than the sulfonyLthioureido and the derived thiazole analogs.

TL;DR: A new class of compounds are revealed as potential drug leads against the SARS virus, and a solid understanding of the mechanism of inhibition against the target enzyme is provided.

TL;DR: Thieno[3,2-d]pyrimidine derivative 15e was found to be selective for p110alpha over other PI3K isoforms and protein kinases, making it the first example of a selectivePI3K p110 alpha inhibitor.

TL;DR: All compounds of the series have been screened for their antibacterial and antifungal activity studies and Structures of the products have been determined by chemical reactions and spectral studies.

TL;DR: It was found that 3 possessed the most potent anti-HIV-1 PR activity with an IC50 value of 5.6 microM, followed by 2 (IC50 = 18.7 microM), whereas other compounds exhibited only mild activity.

TL;DR: Eighteen analogues of an active natural chalcone were synthesized using xanthoxyline and some derivatives, and these analogues were tested for selective activity against both promastigote and intracellular amastigotes of Leishmania amazonensis in vitro.

TL;DR: A microwave-assisted three-component, regioselective one-pot cyclocondensation method has been developed for the synthesis of a series of novel spiro[indole-thiazolidinones] (6a-l) using an environmentally benign procedure at atmospheric pressure in open vessel.

TL;DR: The SAR study indicated the importance of the hydrogen bond acceptor subunit (3a-l), the position in the aromatic ring, the planarity of triazole and phenyl rings in these compounds, and a correlation between the uniform HOMO coefficient distribution and the anti-tubercular activity.

TL;DR: A series of 5-(2-hydroxyphenyl)-3-substituted-2,3-dihydro-1,3,4-oxadiazole-2-thione derivatives was synthesized and 13 of them were selected by the National Cancer Institute and evaluated for their in vitro anticancer activity.

TL;DR: A new series of quinazoline analogs was designed to resemble methotrexate (MTX, 1) structure features and fitted with functional groups believed to enhance inhibition of mammalian DHFR activity to produce potent new leads for anticancer drugs.

TL;DR: Two series of N-[5-oxo-4-(arylsulfonyl)-4,5-dihydro-1,3,4-thiadiazol-2-yl]-amides synthesized and tested in vivo for their analgesic and anti-inflammatory activities showed good antalgic action in the acetic acid writhing test and some terms of the series showed also fair anti- inflammatory activity in the carrageenan rat paw edema test.

TL;DR: The data suggested that CQ inhibited A549 lung cancer cell growth at lower concentrations by increasing the volume of lysosomes and that PC-PLC might be involved in this process, but the data also indicated that, at higher concentrations, CQ induced apoptosis and necrosis, but at this time its ability to increase theVolume ofLysosome gradually declined, and PC- PLC might not be implicated in the process.

TL;DR: In vitro toxicity tests demonstrated that compounds 4d and 6a showed very less toxicity against human erythrocytes, and all synthesized compounds showed significant activity against bacterial strains but were found to be less active against tested fungi.

TL;DR: Spectrometric titrations, ethidium bromide displacement experiments, and viscosity measurements indicate that the two compounds, especially the La(III) complex, strongly bind with calf-thymus DNA, presumably via an intercalation mechanism.

TL;DR: A novel strategy to overcome the limitation associated with exogenous ATRA therapy has been to modulate and/or increase the levels of endogenous ATRA by inhibiting the cytochrome P450-dependent ATRA-4-hydroxylase enzymes (particularly CYP26s) responsible for ATRA metabolism.

TL;DR: Current steady-state inhibition data indicate that baicalein is not selective against 12-hLO versus human reticulocyte 15-LO-1 (15-h LO-1) (15/12=1.3), in vitro, however, in the presence of detergents baicalEin is slightly more selective as seen by the steady- state inhibition kinetics, which may imply greater selectivity in a cell-based assay but has yet to be proven.