P4 capped amides and lactams as HCV NS3 protease inhibitors with improved potency and DMPK profile.

abstract：:Based upon a previously reported lead compound 1, a series of 1,2-diamino-ethane-substituted-6,7,8,9-tetrahydro-5H-pyrimido[4,5-d]azepines were synthesized and evaluated for improved physiochemical and pharmacokinetic properties while maintaining TRPV1 antagonist activity. Structure-activity relationship studies direc...

journal_title：Bioorganic & medicinal chemistry letters

authors： Lebsack AD,Rech JC,Branstetter BJ,Hawryluk NA,Merit JE,Allison B,Rynberg R,Buma J,Rizzolio M,Swanson N,Ao H,Maher MP,Herrmann M,Freedman J,Scott BP,Luo L,Bhattacharya A,Wang Q,Chaplan SR,Wickenden AD,Breitenbucher

更新日期：2010-12-01 00:00:00

abstract：:The synthesis and antibacterial activity of 3-methylenepyrrolidine formyl hydroxyamino derivatives are reported. The antibacterial activities of these derivatives were evaluated to discover SAR at P(1') and P(3') positions, and most of these derivatives exhibit better in vitro antibacterial activity than existing drug...

journal_title：Bioorganic & medicinal chemistry letters

authors： Shi W,Ma H,Duan Y,Aubart K,Fang Y,Zonis R,Yang L,Hu W

更新日期：2011-02-01 00:00:00

abstract：:Knoevenagel condensation was employed to generate a set of molecules potentially capable of inhibiting the RNA polymerase-σ70/σA interaction in bacteria. Synthesis was achieved via reactions between a variety of indole-7-carbaldehydes and rhodanine, N-allylrhodanine, barbituric acid or thiobarbituric acid. A library o...

journal_title：Bioorganic & medicinal chemistry letters

authors： Wenholz DS,Zeng M,Ma C,Mielczarek M,Yang X,Bhadbhade M,Black DSC,Lewis PJ,Griffith R,Kumar N

更新日期：2017-09-15 00:00:00

abstract：:(Me)FGC(Bz)DEVD was radiolabeled with technetium-99m in high yield. This tracer was preferentially accumulated in apoptotic cells in the in vitro studies. Tumor uptake occurred in vivo after cisplatin injection due to the apoptosis induction, which not observed in the untreated tumors. Therefore, (99m)Tc-(Me)FGCDEVD i...

journal_title：Bioorganic & medicinal chemistry letters

authors： Bohn P,Mouchard F,Rouvet J,de Boisgrollier AC,Vera P

更新日期：2013-03-01 00:00:00

abstract：:In an effort to discover potent antitumor agents, a series of novel C-7-heteroaryl-substituted camptothecin derivatives were designed and synthesized via microwave-promoted Suzuki coupling reaction. These analogs were then assessed for cytotoxicity against three human tumor cell lines, A549, HCT116, HT-29, and inhibit...

journal_title：Bioorganic & medicinal chemistry letters

authors： Wang L,Huang Y,Zhang J,Tong L,Chen Y,Lu W,Huang Q

更新日期：2014-03-15 00:00:00

abstract：:Mo(VI) and Mo(V) salts both react selectively with Hantzsch esters to produce substitute pyridines in good-to-excellent yield (75-99%). The remarkable reactivity and selectivity of MoOCl(4) under reflux of acetonitrile and MoCl(5) in dichloromethane at room temperature encouraged us to propose that molybdenum-containi...

journal_title：Bioorganic & medicinal chemistry letters

authors： Litvić M,Regović M,Smic K,Lovrić M,Filipan-Litvić M

更新日期：2012-06-01 00:00:00

abstract：:This study examined the neuroprotective effects of kobophenol A (kob A), oligomeric stillbene, and a resveratrol tetramer. Neuronal death induced by the withdrawal of tropic support was ameliorated by kob A. The protective effect of kob A against nitrosative/oxidative or mitochondrial damages resulted in the inhibitio...

journal_title：Bioorganic & medicinal chemistry letters

authors： Lee SR,Kwak JH,Kim HJ,Pyo S

更新日期：2007-04-01 00:00:00

abstract：:The discovery and SAR of a series of potent renin inhibitors possessing a novel biaryl scaffold are described herein. Molecular modeling revealed that the cyclopropylamide spacer present in 1 can be replaced by a simple, substituted aromatic ring such as a toluene in 2. The resulting compounds exhibit subnanomolar ren...

journal_title：Bioorganic & medicinal chemistry letters

authors： Lacombe P,Aspiotis R,Bayly C,Chen A,Dubé D,Fortin R,Gallant M,Juteau H,Liu S,McKay D,Roy P,Wu T

更新日期：2010-10-01 00:00:00

abstract：:Considering the therapeutic potential of fatty acid amides, the present study aimed to evaluate their in vitro activity against Toxocara canis larvae and their cytotoxicity for the first time. Linoleylpyrrolidilamide was the most potent, with a minimal larvicidal concentration (MLC) of 0.05 mg/mL and 27% cytotoxicity ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Mata-Santos T,D'Oca CDRM,Mata-Santos HA,Fenalti J,Pinto N,Coelho T,Berne ME,da Silva PEA,D'Oca MGM,Scaini CJ

更新日期：2016-02-01 00:00:00

abstract：:Fatty acylated dipeptides homologous to Gi alpha N-termini affect ligand binding to muscarinic acetylcholine receptors. Myristylglycine-serine containing dipeptides decrease antagonist binding at both M1 and M2 muscarinic receptors. Palmitate on the serine analogous to native palmitoylated cysteine affords dipeptide w...

journal_title：Bioorganic & medicinal chemistry letters

authors： Krishnan V,Pham WN,Messer WS Jr,Peseckis SM

更新日期：1999-12-06 00:00:00

abstract：:The synthesis of novel C6-aryl substituted derivatives of 3-(dimethylamino)chroman is described. The novel derivatives display 5-HT(7) receptor affinities that varies from nM to muM, indicating that this small set of derivatives constitute a novel and interesting starting point for further structure-serotonin 5-HT(7) ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Holmberg P,Tedenborg L,Rosqvist S,Johansson AM

更新日期：2005-02-01 00:00:00

abstract：:A modified vancomycin binding pocket (D-O-E ring) incorporating an alpha-hydroxy-beta-amino acid at the AA4 position is designed and synthesized. Some of these compounds display potent bioactivities against both sensitive- and resistant-strains (8 microg/ml against VREF). Both the lipidated aminoglucose and the struct...

journal_title：Bioorganic & medicinal chemistry letters

authors： Jia Y,Gonzalez-Zamora E,Ma N,Liu Z,Bois-Choussy M,Malabarba A,Brunati C,Zhu J

更新日期：2005-10-15 00:00:00

abstract：:Thirteen per-6-akylamino-6-deoxy-beta-cyclodextrin libraries (beta-CD libraries) were generated by a solution-phase combinatorial synthesis starting from per-6-iodo-6-deoxy-beta-CD and different combinations of eleven individual amine nucleophiles. Certain libraries showed the ability to hydrolyzep-nitrophenyl phospha...

journal_title：Bioorganic & medicinal chemistry letters

authors： Yu J,Zhao Y,Holterman MJ,Venton DL

更新日期：1999-09-20 00:00:00

abstract：:Apparent kinetic constants k(cat) and K(m) were determined for tyrocidine thioesterase (TycC TE) using randomized peptide N-acetylcysteamine thioesters as substrate analogues. The enzyme has been found to be adequately active for the synthesis of positional-scanning libraries for novel antibiotic screening with reduce...

journal_title：Bioorganic & medicinal chemistry letters

authors： Xie G,Uttamchandani M,Chen GY,Bu X,Lin SS,Wong KM,Yan W,Yao SQ,Guo Z

更新日期：2002-03-25 00:00:00

abstract：:A series of 2-phenyl- or 3-phenyl piperazines, structurally related to DM235 and DM232, two potent nootropic agents, have been prepared and tested in the mouse passive-avoidance test, to assess their ability to revert scopolamine-induced amnesia. Although the newly synthesized molecules were less potent than the paren...

journal_title：Bioorganic & medicinal chemistry letters

authors： Guandalini L,Martino MV,Di Cesare Mannelli L,Bartolucci G,Melani F,Malik R,Dei S,Floriddia E,Manetti D,Orlandi F,Teodori E,Ghelardini C,Romanelli MN

更新日期：2015-04-15 00:00:00

abstract：:A novel neurokinin-1 receptor antagonist, (+/-)-(1R( *),3S( *),4S( *),5S( *))-4-[(N-(2-methoxy-5-trifluoromethoxybenzyl)amino]-3-phenyl-2-aza-7-oxabicyclo[3.3.0]octane (1), was synthesized stereoselectively using Padwa's intramolecular 1,3-dipolar cycloaddition methodology as the key step. Compound (+/-)-1 showed high...

journal_title：Bioorganic & medicinal chemistry letters

authors： Shishido Y,Ito F,Morita H,Ikunaka M

更新日期：2007-12-15 00:00:00

abstract：:A series of novel oxime-containing pyrazole derivatives were synthesized by the reaction of ethyl 3-phenyl-1H-pyrazole-5-carboxylate derivatives and 2-bromo-1-phenylethanone followed by the reaction with hydroxylamine hydrochloride. The structures were determined by IR, (1)H NMR, HRMS, and X-ray analysis. A dose- and ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Zheng LW,Li Y,Ge D,Zhao BX,Liu YR,Lv HS,Ding J,Miao JY

更新日期：2010-08-15 00:00:00

abstract：:A novel series of benzenesulfonamides that contain ferrocenyl or ruthenocenyl moieties were synthesized and investigated for their ability to inhibit the enzymatic activity of physiologically relevant carbonic anhydrase (CA) isozymes: hCA I, II and tumour-associated IX (h=human). This manuscript describes the regiosel...

journal_title：Bioorganic & medicinal chemistry letters

authors： Salmon AJ,Williams ML,Innocenti A,Vullo D,Supuran CT,Poulsen SA

更新日期：2007-09-15 00:00:00

abstract：:The proprotein convertases PCSK8 and PCSK4 are, respectively, the 8th and 4th members of Ca(+2)-dependent serine endoprotease of Proprotein Convertase Subtilisin Kexin (PCSK) super family structurally related to the bacterial subtilisin and yeast kexin. The membrane bound PCSK8 (also called SKI-1 or S1P) is implicated...

journal_title：Bioorganic & medicinal chemistry letters

authors： Basak A,Goswami M,Rajkumar A,Mitra T,Majumdar S,O'Reilly P,Bdour HM,Trudeau VL,Basak A

更新日期：2015-01-01 00:00:00

abstract：:The synthesis and antihypertensive activity of racemates and enantiomers of substituted 2,3,8,8a-tetrahydro-7H-oxazolo[3,2-a]pyridinedicarboxylates have been reported. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Martín E,Morán A,Martín ML,San Román L,Puebla P,Medarde M,Caballero E,San Feliciano A

更新日期：2000-02-21 00:00:00

abstract：:High-throughput screening of the GSK compound collection against the P2Y(1) receptor identified a novel series of tetrahydro-4-quinolinamine antagonists. Optimal substitution around the piperidine group was pivotal for ensuring activity. An exemplar analog from this series was shown to inhibit platelet aggregation. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Morales-Ramos AI,Mecom JS,Kiesow TJ,Graybill TL,Brown GD,Aiyar NV,Davenport EA,Kallal LA,Knapp-Reed BA,Li P,Londregan AT,Morrow DM,Senadhi S,Thalji RK,Zhao S,Burns-Kurtis CL,Marino JP Jr

更新日期：2008-12-01 00:00:00

abstract：:A series of novel cyclic analogues of curcumin were synthesized and analyzed for in vitro cytostatic activity. Condensation of 2-acetylcycloalkanones with a variety of aromatic aldehydes resulted in the formation of 2-arylidene-6-(3-arylacryoyl)-cycloalkanone derivatives. A number of these analogues were found to have...

journal_title：Bioorganic & medicinal chemistry letters

authors： Youssef D,Nichols CE,Cameron TS,Balzarini J,De Clercq E,Jha A

更新日期：2007-10-15 00:00:00

abstract：:Group II metabotropic glutamate receptors (mGluRs) have been implicated in a variety of neurological and psychiatric disorders in recent studies. As a noninvasive medical imaging technique and a powerful tool in neurological research, positron emission tomography (PET) offers the possibility to visualize and study gro...

journal_title：Bioorganic & medicinal chemistry letters

authors： Wang JQ,Zhang Z,Kuruppu D,Brownell AL

更新日期：2012-03-01 00:00:00

abstract：:Six 3'R,4'R-di-O-(S)-camphanoyl-2',2'-dimethyldihydropyrano[2,3-f]chromone (DCP) and two 3'R,4'R-di-O-(S)-camphanoyl-(+)-cis-khellactone (DCK) derivatives were designed, synthesized, and evaluated for inhibition of HIV-1(NL4-3) replication in TZM-bl cells. 2-Ethyl-2'-monomethyl-1'-oxa- and -1'-thia-DCP (5a, 6a), as we...

journal_title：Bioorganic & medicinal chemistry letters

authors： Liu HS,Xu SQ,Cheng M,Chen Y,Xia P,Qian K,Xia Y,Yang ZY,Chen CH,Morris-Natschke SL,Lee KH

更新日期：2011-10-01 00:00:00

abstract：:A series of isoquinuclidine benzamides as glycine uptake inhibitors for the treatment of schizophrenia are described. Potency, lipophilicity, and intrinsic human microsomal clearance were parameters for optimization. Potency correlated with the nature of the ortho substituents of the benzamide ring, and reductions in ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Varnes JG,Xiong H,Forst JM,Holmquist CR,Ernst GE,Frietze W,Dembofsky B,Andisik DW,Palmer WE,Hinkley L,Steelman GB,Wilkins DE,Tian G,Jonak G,Potts WM,Wang X,Brugel TA,Alhambra C,Wood MW,Veale CA,Albert JS

更新日期：2018-04-01 00:00:00

abstract：:Sialidases are key virulence factors that remove sialic acid from host cell surface glycans, thus unmasking receptors to facilitate bacterial adherence and colonization. In this study, we report the isolation and characterization of novel inhibitors of the Streptococcus pneumoniae sialidases NanA, NanB, and NanC from ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Park JY,Hwan Lim S,Ram Kim B,Jae Jeong H,Kwon HJ,Song GY,Bae Ryu Y,Song Lee W

更新日期：2017-07-15 00:00:00

abstract：:Various substituted indazole and benzoxazolone amino acids were investigated as d-tyrosine surrogates in highly potent CGRP receptor antagonists. Compound 3, derived from the 7-methylindazole core, afforded a 30-fold increase in CGRP binding potency compared with its unsubstituted indazole analog 1. When dosed at 0.03...

journal_title：Bioorganic & medicinal chemistry letters

authors： Han X,Civiello RL,Conway CM,Cook DA,Davis CD,Degnan AP,Jiang XJ,Macci R,Mathias NR,Moench P,Pin SS,Schartman R,Signor LJ,Thalody G,Tora G,Whiterock V,Xu C,Macor JE,Dubowchik GM

更新日期：2013-03-15 00:00:00

abstract：:Structure-based drug design was exploited in the synthesis of 3-(6-chloronaphth-2-ylsulfonyl)aminopyrrolidin-2-one-based factor Xa (fXa) inhibitors, incorporating an alanylamide P4 group with acyclic tertiary amide termini. Optimized hydrophobic contacts of one amide substituent in P4 were complemented by hydrophobici...

journal_title：Bioorganic & medicinal chemistry letters

authors： Young RJ,Campbell M,Borthwick AD,Brown D,Burns-Kurtis CL,Chan C,Convery MA,Crowe MC,Dayal S,Diallo H,Kelly HA,King NP,Kleanthous S,Mason AM,Mordaunt JE,Patel C,Pateman AJ,Senger S,Shah GP,Smith PW,Watson NS,West

更新日期：2006-12-01 00:00:00

abstract：:Novel imidazole frameworks have been identified as potent partial agonists of the alpha(1A) adrenergic receptor, with good selectivity over the alpha(1B), alpha(1D) and alpha(2A) receptor sub-types. Nitrile 28 possessed attractive CNS drug-like properties with good membrane permeability and no P-pg mediated efflux. 28...

journal_title：Bioorganic & medicinal chemistry letters

authors： Whitlock GA,Brennan PE,Roberts LR,Stobie A

更新日期：2009-06-01 00:00:00

abstract：:Group A streptococcus is a Gram-positive bacteria that causes a range of infectious diseases. Targeting the bacteria, a new self-adjuvanting vaccine candidate, incorporating a carbohydrate carrier and an amino acid-based adjuvant, was synthesised utilising carbohydrate chemistry and solid-phase peptide synthesis proce...

journal_title：Bioorganic & medicinal chemistry letters

authors： Simerska P,Lu H,Toth I

更新日期：2009-02-01 00:00:00