Dihydropyrazolopyrimidine inhibitors of K(V)1.5 (I(Kur)).

abstract：:A novel series of 4-phenyl-4-[1H-imidazol-2-yl]-piperidine derivatives has been prepared and their synthesis described herein. In vitro affinities for delta-, mu-, and kappa-opioid receptors, as well as the functional activity in the [(35)S]GTPgammaS assay are reported. The most potent and selective delta-opioid agoni...

journal_title：Bioorganic & medicinal chemistry letters

authors： Trabanco AA,Pullan S,Alonso JM,Alvarez RM,Andrés JI,Boeckx I,Fernández J,Gómez A,Iturrino L,Janssens FE,Leenaerts JE,De Lucas AI,Matesanz E,Meert T,Steckler T

更新日期：2006-01-01 00:00:00

abstract：:Substitution at the alpha center of the known human arginase inhibitor 2-amino-6-boronohexanoic acid (ABH) is acceptable in the active site pockets of both human arginase I and arginase II. In particular, substituents with a tertiary amine linked via a two carbon chain show improved inhibitory potency for both enzyme ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Golebiowski A,Paul Beckett R,Van Zandt M,Ji MK,Whitehouse D,Ryder TR,Jagdmann E,Andreoli M,Mazur A,Padmanilayam M,Cousido-Siah A,Mitschler A,Ruiz FX,Podjarny A,Schroeter H

更新日期：2013-04-01 00:00:00

abstract：:Amide- and ester-linked kinase inhibitor-cytotoxin conjugates were rationally designed and synthesised as prototype hypoxia-activated anticancer mutual prodrugs. Chemical reduction of an aryl nitro trigger moiety was shown to initiate a spontaneous cyclisation/fragmentation reaction that simultaneously released the ki...

journal_title：Bioorganic & medicinal chemistry letters

authors： Sansom GN,Kirk NS,Guise CP,Anderson RF,Smaill JB,Patterson AV,Kelso MJ

更新日期：2019-05-15 00:00:00

abstract：:The C17-THP derivative of 7alpha-(11-azidoundecanyl)-estradiol (4) was synthesized and coupled to an aminomethyl resin via a photolabile o-nitrobenzyl linker. Reduction of the azide by the Staudinger reaction to its corresponding amine followed by acylation using four activated NFmoc protected amino acids gave a first...

journal_title：Bioorganic & medicinal chemistry letters

authors： Tremblay MR,Simard J,Poirier D

更新日期：1999-10-04 00:00:00

abstract：:Introduction of 3-substituted azetidinyl substituents onto the 4,6-diaminopyrimidine scaffold allowed the improvement of PDE4 inhibiting activities. Preliminary in vivo activity in pulmonary inflammation models is reported. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Provins L,Christophe B,Danhaive P,Dulieu J,Gillard M,Quéré L,Stebbins K

更新日期：2007-06-01 00:00:00

abstract：:In an effort to find potential anxiolytic and/or antipsychotic agents with selective 5-HT(2C) affinity a series of new pyrimidine derivatives was prepared and the binding affinities for 5-HT(2A) and 5-HT(2C) receptors were determined. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Bózsing D,Simonek I,Simig G,Jakóczi I,Gacsályi I,Lévay G,Tihanyi K,Schmidt E

更新日期：2002-11-04 00:00:00

abstract：:A simple and versatile method for preparation of (D)-Phe-Pro peptidomimetic bicyclic thiazolidine lactams is presented. These bicyclic lactams have chemical diversity alpha to the lactam carbonyl and, when linked to electrophilic arginines, provide potent thrombin inhibitors. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Bachand B,DiMaio J,Siddiqui MA

更新日期：1999-04-05 00:00:00

abstract：:Novel dihydropyrazole sulfonamide derivatives (30-56) were designed, synthesized, and evaluated for their biological activities as COX-1 and COX-2 inhibitors. In vitro biological evaluation against three human tumor cell lines revealed that most target compounds showed antiproliferative activities. Among the compounds...

journal_title：Bioorganic & medicinal chemistry letters

authors： Chen Z,Wang ZC,Yan XQ,Wang PF,Lu XY,Chen LW,Zhu HL,Zhang HW

更新日期：2015-05-01 00:00:00

abstract：:A novel class of 4-substituted-8-(1-phenyl-cyclohexyl)-2,8-diaza-spiro[4.5]decan-1-ones have been discovered and developed as potent and selective GlyT1 inhibitors. The molecules are devoid of activity at the GlyT2 isoform and display excellent selectivities against the mu opioid receptor as well as the nociceptin/orp...

journal_title：Bioorganic & medicinal chemistry letters

authors： Alberati D,Hainzl D,Jolidon S,Kurt A,Pinard E,Thomas AW,Zimmerli D

更新日期：2006-08-15 00:00:00

abstract：:A series of pentapeptides, based on hMC4R pentapeptide agonist (Bu-His(6)-DPhe(7)-Arg(8)-Trp(9)-Gly(10)-NH(2)), was prepared in which either DPhe(7) or Trp(9) residue was systematically substituted. A number of interesting DPhe surrogates (D-Thi, D-3-CF(3)Phe, D-2-Nal and D-3,4-diClPhe) as well as Trp surrogates (2-Na...

journal_title：Bioorganic & medicinal chemistry letters

authors： Danho W,Swistok J,Cheung AW,Kurylko G,Franco L,Chu XJ,Chen L,Yagaloff K

更新日期：2003-02-24 00:00:00

abstract：:An inibition study of the β-carbonic anhydrase (CA, EC 4.2.1.1) DmBCA from the insect Drosophila melanogaster with sulfonamides and sulfamates is reported. Among the panel of 40 investigated compounds, the best DmBCA inhibitors were the sulfonylated benzenesulfonamides and ethoxzolamide, which showed inhibition consta...

journal_title：Bioorganic & medicinal chemistry letters

authors： Syrjänen L,Parkkila S,Scozzafava A,Supuran CT

更新日期：2014-07-01 00:00:00

abstract：:Structure-activity studies on the oxytocin antagonist 1 (L-371,257; Ki = 9.3 nM) have led to the identification of a related series of compounds containing an ortho-trifluoroethoxyphenylacetyl core which are orally bioavailable and have significantly improved potency in vitro and in vivo, e.g., compound 8 (L-374,943; ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Williams PD,Bock MG,Evans BE,Freidinger RM,Gallicchio SN,Guidotti MT,Jacobson MA,Kuo MS,Levy MR,Lis EV,Michelson SR,Pawluczyk JM,Perlow DS,Pettibone DJ,Quigley AG,Reiss DR,Salvatore C,Stauffer KJ,Woyden CJ

更新日期：1999-05-03 00:00:00

abstract：:From our modulator library an interesting inhibitor of breast cancer resistance protein (BCRP) was identified. Due to its high inhibitory potency, this compound may serve as a promising novel lead for the design of new and potent modulators. This adds a new structural class to the few known highly active BCRP inhibito...

journal_title：Bioorganic & medicinal chemistry letters

authors： Pick A,Müller H,Wiese M

更新日期：2010-01-01 00:00:00

abstract：:Incorporation of a 4-hydroxy-N-acetylprolinol nucleotide analogue at the 3'-terminus of DNA or 2-5A-DNA sequences resulted in a significantly enhanced 3'-exonuclease resistance while the affinity for complementary RNA was only slightly decreased. Furthermore, the binding to and activation of human RNase L by thus modi...

journal_title：Bioorganic & medicinal chemistry letters

authors： Verheijen JC,van Roon AM,Meeuwenoord NJ,Stuivenberg HR,Bayly SF,Chen L,van der Marel GA,Torrence PF,van Boom JH

更新日期：2000-04-17 00:00:00

abstract：:The synthesis and in vivo evaluation of (11)C -labeled uric acid ([(11)C]1), a potential imaging agent for the diagnosis of urate-related life-style diseases, was performed using positron emission tomography (PET) image analysis. First, the synthesis of [(11)C]1 was achieved by reacting 5,6-diaminouracil (2) with (11)...

journal_title：Bioorganic & medicinal chemistry letters

authors： Yashio K,Katayama Y,Takashima T,Ishiguro N,Doi H,Suzuki M,Wada Y,Tamai I,Watanabe Y

更新日期：2012-01-01 00:00:00

abstract：:Incorporation of 5-propynylamino and 5-propynyl alpha-2'-deoxyuridine into alpha-oligonucleotides (alpha-ON) allows high-affinity targeting of complementary DNA for alpha-ON with anionic and neutral backbone but not for cationic alpha-ON, revealing clues on the role of the amino group of the propynylamino on the forma...

journal_title：Bioorganic & medicinal chemistry letters

authors： Deglane G,Morvan F,Debart F,Vasseur JJ

更新日期：2007-02-15 00:00:00

abstract：:Triphosphate of a new fluorescent labeled thymidine analogue was incorporated as a substrate for PCR using KOD Dash DNA polymerase forming the corresponding fluorescent labeled DNA which is useful for a DNA probe. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Obayashi T,Masud MM,Ozaki AN,Ozaki H,Kuwahara M,Sawai H

更新日期：2002-04-22 00:00:00

abstract：:A series of artemisinin derived esters 7a-j, incorporating pharmacologically privileged substructure, such as biphenyl, adamantane and fluorene, have been prepared and evaluated for antimalarial activity against multidrug-resistant (MDR) Plasmodium yoelii nigeriensis by oral route. Several of these compounds were foun...

journal_title：Bioorganic & medicinal chemistry letters

authors： Singh C,Chaudhary S,Puri SK

更新日期：2008-02-15 00:00:00

abstract：:PNU-159682 is a highly potent secondary metabolite of nemorubicin belonging to the anthracycline class of natural products. Due to its extremely high potency and only partially understood mechanism of action, it was deemed an interesting starting point for the development of a new suite of linker drugs for antibody dr...

journal_title：Bioorganic & medicinal chemistry letters

authors： Holte D,Lyssikatos JP,Valdiosera AM,Swinney Z,Sisodiya V,Sandoval J,Lee C,Aujay MA,Tchelepi RB,Hamdy OM,Gu C,Lin B,Sarvaiya H,Pysz MA,Laysang A,Williams S,Jun Lee D,Holda MK,Purcell JW,Gavrilyuk J

更新日期：2020-12-15 00:00:00

abstract：:A significant increase in plasma glutamate-oxaloacetate transaminase and glutamate-pyruvate transaminase was observed 6 h after intraperitoneal administration of D-galactosamine (D-Galn). Three hours after administration of D-Galn, the vitamin C concentration in the liver decreased significantly compared to that in a ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Nishioka H,Kishioka T,Iida C,Fujii K,Ichi I,Kojo S

更新日期：2006-06-01 00:00:00

abstract：:N-[2-(Diethylamino)ethyl]-5-[(Z)-(5-[18F]fluoro-2-oxo-1,2-dihydro-3H-indol-3-ylidene)methyl]-2,4-dimethyl-1H-pyrrole-3-carboxamide, a new potential positron emission tomography tracer for imaging cancer tyrosine kinase, has been prepared by the nucleophilic substitution of the nitro-precursor N-[2-(diethylamino)ethyl]...

journal_title：Bioorganic & medicinal chemistry letters

authors： Wang JQ,Miller KD,Sledge GW,Zheng QH

更新日期：2005-10-01 00:00:00

abstract：:A new cytotoxic oxysterol, 16beta-hydroxy-5alpha-cholestane-3,6-dione was isolated from the red alga Jania rubens. Its structure was established by spectroscopic method. The ID50 value was 0.5 microg/mL. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Ktari L,Blond A,Guyot M

更新日期：2000-11-20 00:00:00

abstract：:A series of human carbonic anhydrase (hCA) IX inhibitors conjugated to various near-infrared fluorescent dyes was synthesized with the aim of imaging hypoxia-induced hCA IX expression in tumor cells in vitro, ex vivo and in vivo. The resulting compounds were profiled for inhibition of transmembrane hCA IX showing a ra...

journal_title：Bioorganic & medicinal chemistry letters

authors： Groves K,Bao B,Zhang J,Handy E,Kennedy P,Cuneo G,Supuran CT,Yared W,Peterson JD,Rajopadhye M

更新日期：2012-01-01 00:00:00

abstract：:A library of 26 novel carboxamides deriving from natural fislatifolic acid has been prepared. The synthetic strategy involved a bio-inspired Diels-Alder cycloaddition, followed by functionalisations of the carbonyl moiety. All the compounds were evaluated on Bcl-xL, Mcl-1 and Bcl-2 proteins. In this series of cyclohex...

journal_title：Bioorganic & medicinal chemistry letters

authors： Gapil Tiamas S,Daressy F,Abou Samra A,Bignon J,Steinmetz V,Litaudon M,Fourneau C,Hoong Leong K,Ariffin A,Awang K,Desrat S,Roussi F

更新日期：2020-04-01 00:00:00

abstract：:High potency pyrazole-based noncovalent inhibitors of human cathepsin S (CatS) were developed by modification of the benzo-fused 5-membered ring heterocycles found in earlier series of CatS inhibitors. Although substitutions on this heterocyclic framework had a moderate impact on enzymatic potency, dramatic effects on...

journal_title：Bioorganic & medicinal chemistry letters

authors： Wei J,Pio BA,Cai H,Meduna SP,Sun S,Gu Y,Jiang W,Thurmond RL,Karlsson L,Edwards JP

更新日期：2007-10-15 00:00:00

abstract：:This Letter describes the synthesis of two regioisomers of a new class of vesamicol analogs as possible ligands for imaging the vesicular acetylcholine transporter in future PET studies. The two pyrrolovesamicols (±)-6a and (±)-6b were synthesized by nucleophilic ring opening reaction of a tetrahydroindole epoxide pre...

journal_title：Bioorganic & medicinal chemistry letters

authors： Wenzel B,Li Y,Kraus W,Sorger D,Sabri O,Brust P,Steinbach J

更新日期：2012-03-15 00:00:00

abstract：:In order to further explore the importance of cocaine's bridge nitrogen atom in binding to the dopamine transporter (DAT), we have synthesized the previously known racemic 8-oxa-norcocaines 3-6 in which the nitrogen atom has been replaced by oxygen. Additionally, to avoid incorrect interpretations of biological data t...

journal_title：Bioorganic & medicinal chemistry letters

authors： Kozikowski AP,Simoni D,Roberti M,Rondanin R,Wang S,Du P,Johnson KM

更新日期：1999-07-05 00:00:00

abstract：:A series of potent non-acetylinic negative allosteric modulators of the metabotropic glutamate receptor 5 (mGlu5 NAMs) was developed starting from HTS screening hit 1. Potency was improved via iterative SAR, and physicochemical properties were optimized to deliver orally bioavailable compounds acceptable for in vivo t...

journal_title：Bioorganic & medicinal chemistry letters

authors： Duvey G,Perry B,Le Poul E,Poli S,Bonnet B,Lambeng N,Charvin D,Donovan-Rodrigues T,Haddouk H,Gagliardi S,Rocher JP

更新日期：2013-08-15 00:00:00

abstract：:The successfully application of some metallodrugs such as salvarsan, silver sulfadiazine and cisplatin in modern medicine launched the biological investigation of organometallic and metal-organic complexes. The availability and tunability of various ligands including N-heterocycles, phosphines, N-heterocyclic carbenes...

journal_title：Bioorganic & medicinal chemistry letters

authors： Balcıoğlu S,Olgun Karataş M,Ateş B,Alıcı B,Özdemir İ

更新日期：2020-01-15 00:00:00

abstract：:This Letter describes the chemical optimization of a novel series of M4 positive allosteric modulators (PAMs) based on a 5,6-dimethyl-4-(piperidin-1-yl)thieno[2,3-d]pyrimidine core, identified from an MLPCN functional high-throughput screen. The HTS hit was potent and selective, but not CNS penetrant. Potency was main...

journal_title：Bioorganic & medicinal chemistry letters

authors： Wood MR,Noetzel MJ,Engers JL,Bollinger KA,Melancon BJ,Tarr JC,Han C,West M,Gregro AR,Lamsal A,Chang S,Ajmera S,Smith E,Chase P,Hodder PS,Bubser M,Jones CK,Hopkins CR,Emmitte KA,Niswender CM,Wood MW,Duggan ME,C

更新日期：2016-07-01 00:00:00