Syntheses and evaluation of quinoline derivatives as novel retinoic acid receptor alpha antagonists.

abstract：:Benzylidene-2,4-thiazolidinedione derivatives with substitutions at both the ortho and para-positions of the phenyl group were synthesized as PTP1B inhibitors with IC(50) values in a low micromolar range. Compound 18l, the lowest, bore an IC(50) of 1.3 μM. In a peroxisome proliferator-activated receptor-γ (PPAR-γ) pro...

journal_title：Bioorganic & medicinal chemistry letters

authors： Bhattarai BR,Kafle B,Hwang JS,Ham SW,Lee KH,Park H,Han IO,Cho H

更新日期：2010-11-15 00:00:00

abstract：:A new class of chymase inhibitor featuring a benzimidazolone core with an acid side chain and a P(1) hydrophobic moiety is described. Incubation of the lead compound with GSH resulted in the formation of a GSH conjugate on the benzothiophene P(1) moiety. Replacement of the benzothiophene with different heterocyclic sy...

journal_title：Bioorganic & medicinal chemistry letters

authors： Lo HY,Nemoto PA,Kim JM,Hao MH,Qian KC,Farrow NA,Albaugh DR,Fowler DM,Schneiderman RD,Michael August E,Martin L,Hill-Drzewi M,Pullen SS,Takahashi H,De Lombaert S

更新日期：2011-08-01 00:00:00

abstract：:We have identified 2-aminobenzylstatine derivatives that inhibit non-covalently the chymotrypsin-like activity of the human 20S proteasome. A structure-based optimisation approach has allowed us to improve the potency of this structural class of proteasome inhibitors from micromolar to nanomolar level. The new derivat...

journal_title：Bioorganic & medicinal chemistry letters

authors： Furet P,Imbach P,Fuerst P,Lang M,Noorani M,Zimmermann J,García-Echeverría C

更新日期：2002-05-20 00:00:00

abstract：:A 1,8-naphthalimide-Cu(II) ensemble was rationally designed and synthesized as a new turn-on fluorescent probe utilizing the 'chemosensing ensemble' method for detections of thiols (Cys, Hcy and GSH) with high selectivity over other α-amino acids at pH 7.4 in organic aqueous media (EtOH/HEPES, v/v=9:1). The recognitio...

journal_title：Bioorganic & medicinal chemistry letters

authors： Shi YG,Yao JH,Duan YL,Mi QL,Chen JH,Xu QQ,Gou GZ,Zhou Y,Zhang JF

更新日期：2013-05-01 00:00:00

abstract：:New inverse agonists of the ghrelin receptor (ghrelinR) were obtained through high-throughput screening and subsequent structural modification of 2-aminoalkyl nicotinamide derivatives. The key structural feature to improve in vitro activity was the introduction of a diazabicyclo ring at the 5-position of the pyridine ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Takahashi B,Funami H,Iwaki T,Maruoka H,Nagahira A,Koyama M,Kamiide Y,Matsuo T,Muto T,Annoura H

更新日期：2015-07-01 00:00:00

abstract：:The purpose of the present study was the synthesis and the biological screening of new analogues of N/OFQ(1-13)NH2, the minimal sequence maintaining the same activity as the natural peptide nociceptin. In order to investigate the role of Lys, we substituted Lys at positions 9 and/or 13 by Orn, Dab (diaminobutanoic aci...

journal_title：Bioorganic & medicinal chemistry letters

authors： Naydenova ED,Zhivkova VI,Zamfirova RN,Vezenkov LT,Dobrinova YG,Mateeva PI

更新日期：2006-08-01 00:00:00

abstract：:A fluorescent sensor based on a tripeptide (SerGluGlu) with a dansyl fluorophore detected selectively Al(III) among 16 metal ions in aqueous buffered solutions without any organic cosolvent. The peptide-based sensor showed a highly sensitive turn on response to aluminium ion with high binding affinity (1.84×10(4)M(-1)...

journal_title：Bioorganic & medicinal chemistry letters

authors： In B,Hwang GW,Lee KH

更新日期：2016-09-15 00:00:00

abstract：:A high throughput screening campaign revealed compound 1 as a potent antagonist of the human CCK(1) receptor. Here, we report the syntheses and SAR studies of 1,5-diarylpyrazole analogs with various structural modifications of the alkane side chain of the molecule. The difference in affinity between the two enantiomer...

journal_title：Bioorganic & medicinal chemistry letters

authors： Gomez L,Hack MD,McClure K,Sehon C,Huang L,Morton M,Li L,Barrett TD,Shankley N,Breitenbucher JG

更新日期：2007-12-01 00:00:00

abstract：:Metastin has been identified as a metastasis suppressor gene product that mediates its function through a G protein coupled receptor, GPR54. To refine insight into the critical pharmacophore for the activation of GPR54, we have conducted alanine and d-amino acid scanning on a biologically active metastin fragment (45-...

journal_title：Bioorganic & medicinal chemistry letters

authors： Niida A,Wang Z,Tomita K,Oishi S,Tamamura H,Otaka A,Navenot JM,Broach JR,Peiper SC,Fujii N

更新日期：2006-01-01 00:00:00

abstract：:A series of pethidine analogs were synthesized and their affinities for the [(3)H]N-methyl-scopolamine (NMS) binding site on muscarinic acetylcholine receptors (mAChRs) were determined using M1, M3 or M5 human mAChRs expressed by Chinese hamster ovary (CHO) cell membranes. Compound 6b showed the highest binding affini...

journal_title：Bioorganic & medicinal chemistry letters

authors： Lee NR,Zhang X,Darna M,Dwoskin LP,Zheng G

更新日期：2015-11-15 00:00:00

abstract：:Fascin is an actin binding and bundling protein that is not expressed in normal epithelial tissues but overexpressed in a variety of invasive epithelial tumors. It has a critical role in cancer cell metastasis by promoting cell migration and invasion. Here we report the crystal structures of fascin in complex with a s...

journal_title：Bioorganic & medicinal chemistry letters

authors： Francis S,Croft D,Schüttelkopf AW,Parry C,Pugliese A,Cameron K,Claydon S,Drysdale M,Gardner C,Gohlke A,Goodwin G,Gray CH,Konczal J,McDonald L,Mezna M,Pannifer A,Paul NR,Machesky L,McKinnon H,Bower J

更新日期：2019-04-15 00:00:00

abstract：:4-Deacetoxyagosterol A was synthesized from ergosterol by utilizing reductive regioselective epoxy cleavage as a key reaction. This synthesized congener of agosterol A, a spongean MDR-modulator. showed similar MDR-modulating activity against KB CV-60 cells overexpressing MRP. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Murakami N,Sugimoto M,Morita M,Akiyama S,Kobayashi M

更新日期：2000-11-20 00:00:00

abstract：:A series of 2-arylbenzimidazole derivatives (3a-3p and 4a-4i) were synthesized and evaluated as potential antioxidant and antimicrobial agents. Their antioxidant properties were evaluated by various in vitro assays including hydroxyl radical (HO) scavenging, superoxide radical anion (O2(-)) scavenging, 1,1-diphenyl-2-...

journal_title：Bioorganic & medicinal chemistry letters

authors： Zhou B,Li B,Yi W,Bu X,Ma L

更新日期：2013-07-01 00:00:00

abstract：:Chemoselective purification technologies have seen great success in biomolecule isolation, with a classic example being the genetically-encoded His tag utilized to enrich desired proteins from a crude lysate. We sought to translate this purification tactic into a powerful tool for the isolation of natural products and...

journal_title：Bioorganic & medicinal chemistry letters

authors： Trader DJ,Carlson EE

更新日期：2015-11-01 00:00:00

abstract：:Structures containing the (R)-3-amino-3-methyl piperidine unit as a new pharmacophore moiety have been shown to possess moderate inhibitory activity for DPP-4 with good pharmacokinetics profile. One of these compounds was found to have good oral bioavailability and PK/PD profile in ZF-rat. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Nishio Y,Kimura H,Tosaki S,Sugaru E,Sakai M,Horiguchi M,Masui Y,Ono M,Nakagawa T,Nakahira H

更新日期：2010-12-15 00:00:00

abstract：:Several chemical modifications in the N(1)-benzenesulfonamide ring of celecoxib are presented. The series with a hydroxymethyl group adjacent to the sulfonamide was found to be the most potent modification that yielded many compounds selectively active against COX-2 enzyme in vitro. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Singh SK,Reddy PG,Rao KS,Lohray BB,Misra P,Rajjak SA,Rao YK,Venkateswarlu A

更新日期：2004-01-19 00:00:00

abstract：:Five-coordinated oxovanadium(IV) complexes with ciprofloxacin and various uninegative bidentate amino acids have been prepared. The structure of complexes has been investigated using spectral, physicochemical, mass spectroscopy, and elemental analyses. The antimicrobial activities (MIC) of the complexes, ligands, meta...

journal_title：Bioorganic & medicinal chemistry letters

authors： Patel MN,Patel SH,Chhasatia MR,Parmar PA

更新日期：2008-12-15 00:00:00

abstract：:The structures of the uracil and thiouracils were examined using NMR spectroscopy and crystal structure data when available. The relationships between the extent of polarization and the C5-C6 bond length as well as the H5-H6 coupling constants were probed. It was found that the bond length and coupling constants corre...

journal_title：Bioorganic & medicinal chemistry letters

authors： Huang S,Gronert S,Wu W

更新日期：2011-11-01 00:00:00

abstract：:In an effort to rapidly access vancomycin analogues bearing diverse functionality at the 6c-Cl (the 'in-chloride') position, a two-step dechlorination/cross-coupling protocol was developed. Conditions for efficient cross-coupling of the relatively unreactive 6c-Cl group were found that ensure high conversion with mini...

journal_title：Bioorganic & medicinal chemistry letters

authors： Wadzinski TJ,Gea KD,Miller SJ

更新日期：2016-02-01 00:00:00

abstract：:Several imidazole-based cyclohexyl amides were identified as potent CB-1 antagonists, but they exhibited poor oral exposure in rodents. Incorporation of a hydroxyl moiety on the cyclohexyl ring provided a dramatic improvement in oral exposure, together with a ca. 10-fold decrease in potency. Further optimization provi...

journal_title：Bioorganic & medicinal chemistry letters

authors： Smith RA,Fathi Z,Achebe F,Akuche C,Brown SE,Choi S,Fan J,Jenkins S,Kluender HC,Konkar A,Lavoie R,Mays R,Natoli J,O'Connor SJ,Ortiz AA,Su N,Taing C,Tomlinson S,Tritto T,Wang G,Wirtz SN,Wong W,Yang XF,Ying S,

更新日期：2007-05-15 00:00:00

abstract：:A series of alisol A derivatives were synthesized and evaluated for their anti-hepatitis B virus (HBV) activities and cytotoxicities in vitro. The preliminary investigation demonstrates that simple modifications of the parent structure of alisol A can produce a number of potentially important derivatives against HBV. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Zhang Q,Jiang ZY,Luo J,Cheng P,Ma YB,Zhang XM,Zhang FX,Zhou J,Chen JJ

更新日期：2008-08-15 00:00:00

abstract：:Multidrug resistance in tumor cells poses a major obstacle to efficient chemotherapy. Several types of agents have been recognized as multidrug resistance inhibitors, among which the tetrahydroisoquinolines is the most studied. In current study 16 furoxan-based nitric oxide-releasing derivatives of tetrahydroisoquinol...

journal_title：Bioorganic & medicinal chemistry letters

authors： Zou ZH,Lan XB,Qian H,Huang WL,Li YM

更新日期：2011-10-01 00:00:00

abstract：:2-O-carboxymethylpyrogallol derivatives (4-17) were synthesized, with their in vitro inhibitory activities against PTP1B and in vivo antihyperglycemic effects examined. Compound 14, the most potent among the series, showed a K(i) value of 1.1 microM against PTP1B, 7-fold lower than that against TC-PTP. When compound 1...

journal_title：Bioorganic & medicinal chemistry letters

authors： Bhattarai BR,Shrestha S,Ham SW,Kim KR,Cheon HG,Lee KH,Cho H

更新日期：2007-10-01 00:00:00

abstract：:Peptides containing Nepsilon-thioacetyl-lysine and Nepsilon-acetyl-lysine were evaluated for their de(thio)acetylation catalyzed by human HDAC8 and SIRT1, two distinct protein deacetylases. Nepsilon-Thioacetyl-lysine was found to be a mimic of Nepsilon-acetyl-lysine for HDAC8-catalyzed reaction, but to confer inhibiti...

journal_title：Bioorganic & medicinal chemistry letters

authors： Fatkins DG,Monnot AD,Zheng W

更新日期：2006-07-15 00:00:00

abstract：:In this study, affinities and activities of derivatized analogues of Dmt-dermorphin[1-4] (i.e. Dmt-d-Ala-Phe-GlyNH2, Dmt = 2',6'-dimethyl-(S)-tyrosine) for the µ opioid receptor (MOP) and δ opioid receptor (DOP) were evaluated using radioligand binding studies, functional cell-based assays and isolated organ bath expe...

journal_title：Bioorganic & medicinal chemistry letters

authors： Willemse T,Eiselt E,Hollanders K,Schepens W,van Vlijmen HWT,Chung NN,Blais V,Holleran B,Longpré JM,Schiller PW,Maes BUW,Sarret P,Gendron L,Ballet S

更新日期：2018-07-15 00:00:00

abstract：:2-aminoethylbenzofurans constitute a new class of H(3) antagonists that are more rotationally constrained than most previously reported H(3) antagonists. They retain high potency at human and rat receptors, with efficient CNS penetration observed in 35. The SAR of the basic amine moiety was compared in three different...

journal_title：Bioorganic & medicinal chemistry letters

authors： Cowart M,Pratt JK,Stewart AO,Bennani YL,Esbenshade TA,Hancock AA

更新日期：2004-02-09 00:00:00

abstract：:Using a phenotypic screening and SAR optimization approach, a phenyl-bis-oxazole derivative has been identified with anti-proliferative activity, optimized with the use of a panel of cancer cell lines. The lead compound was synthesized by means of a short and effective two-step synthesis using Pd-catalyzed direct aryl...

journal_title：Bioorganic & medicinal chemistry letters

authors： Ohnmacht SA,Ciancimino C,Vignaroli G,Gunaratnam M,Neidle S

更新日期：2013-10-01 00:00:00

abstract：:Synthesis of novel 1,2,3-triazole-linked beta-lactam-bile acid conjugates 17-24 using 1,3-dipolar cycloaddition reaction of azido beta-lactam and terminal alkyne of bile acids in the presence of Cu(I) catalyst (click chemistry) have been realized. These molecules were evaluated in vitro for their antifungal and antiba...

journal_title：Bioorganic & medicinal chemistry letters

authors： Vatmurge NS,Hazra BG,Pore VS,Shirazi F,Chavan PS,Deshpande MV

更新日期：2008-03-15 00:00:00

abstract：:We report the synthesis and biological activity of a series of 2-cyano-4-fluoro-1-thiovalylpyrrolidine inhibitors of DPP-IV. Within this series, compound 19 provided a potent, selective, and orally active DPP-IV inhibitor which demonstrated a very long duration of action in both rat and dog. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Haffner CD,McDougald DL,Reister SM,Thompson BD,Conlee C,Fang J,Bass J,Lenhard JM,Croom D,Secosky-Chang MB,Tomaszek T,McConn D,Wells-Knecht K,Johnson PR

更新日期：2005-12-01 00:00:00

abstract：:A series of caffeic acid amides were designed, synthesized, and their synergistic activity with fluconazole against fluconazole-resistant Candida albicans was evaluated in vitro. The title caffeic acid amides 3-30 except 26 exhibited potent activity, and the subsequent SAR study was conducted. Compound 3, 5, 21, and 3...

journal_title：Bioorganic & medicinal chemistry letters

authors： Dai L,Zang C,Tian S,Liu W,Tan S,Cai Z,Ni T,An M,Li R,Gao Y,Zhang D,Jiang Y

更新日期：2015-01-01 00:00:00