Efforts towards the optimization of a bi-aryl class of potent IRAK4 inhibitors.

abstract：:In an effort to develop antagonists for kappa-mu opioid receptor heterodimers, a series of bivalent ligands 3-6 containing kappa- and mu-antagonist pharmacophores were designed and synthesized. Evaluation of the series in HEK-293 cells revealed 4 (KMN-21) to selectively antagonize the activation of kappa-mu heterodime...

journal_title：Bioorganic & medicinal chemistry letters

authors： Zhang S,Yekkirala A,Tang Y,Portoghese PS

更新日期：2009-12-15 00:00:00

abstract：:Seventy-two novel 1,3,4-oxadiazole thioether derivatives containing different flexible-chain moieties were designed and synthesized. The nematicidal activities of all the title compounds were evaluated, and some compounds showed excellent nematicidal activities against citrus nematodes. The compounds 15, 16, 18, 27, 4...

journal_title：Bioorganic & medicinal chemistry letters

authors： Chen J,Wei C,Wu S,Luo Y,Wu R,Hu D,Song B

更新日期：2020-04-15 00:00:00

abstract：:Two new merosesquiterpenes, verruculides A (1) and B (2), were isolated from a culture broth of the Indonesian ascidian-derived Penicillium verruculosum TPU1311, together with three known congeners, chrodrimanins A (3), B (4), and H (5). The structures of 1 and 2 were assigned on the basis of their spectroscopic data ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Yamazaki H,Nakayama W,Takahashi O,Kirikoshi R,Izumikawa Y,Iwasaki K,Toraiwa K,Ukai K,Rotinsulu H,Wewengkang DS,Sumilat DA,Mangindaan RE,Namikoshi M

更新日期：2015-08-15 00:00:00

abstract：:The derivatization of resin-bound aminobenzimidazole toward the parallel solid-phase synthesis of aminobenzimidazole tethered pharmacologically important heterocycles such as quinazoline-2,4-diones, thioxoquinazolin-4-ones, benzodiazepine-2,3,5-triones, isoxazoles and isoxazolines is reported. All the compounds were t...

journal_title：Bioorganic & medicinal chemistry letters

authors： Dadiboyena S,Arfaoui A,Amri H,Piedrafita FJ,Nefzi A

更新日期：2015-02-01 00:00:00

abstract：:Herein we report the identification of a highly potent and selective CB2 agonist, RQ-00202730 (40), obtained by lead optimization of the benzimidazole scaffold. Compound 40 showed strong agonistic activity with an EC50 of 19nM and excellent selectivity (>1300-fold) over the CB1 receptor. Compound 40 displayed a dose d...

journal_title：Bioorganic & medicinal chemistry letters

authors： Iwata Y,Ando K,Taniguchi K,Koba N,Sugiura A,Sudo M

更新日期：2015-01-15 00:00:00

abstract：:A novel series of aminopyrimidinylisoindoline derivatives 1a-w having an aminopyrimidine scaffold as a hinge region binding motif were designed and synthesized. Among them, six compounds showed potent inhibitory activities against AXL kinase with IC50 values of submicromolar range. Especially, compound 1u possessing (...

journal_title：Bioorganic & medicinal chemistry letters

authors： Choi MJ,Roh EJ,Hur W,Lee SH,Sim T,Oh CH,Lee SH,Kim JS,Yoo KH

更新日期：2018-12-15 00:00:00

abstract：:A nucleopeptide was prepared in a convergent manner via segmental coupling of the protected biopolymers in solution. The resulting nucleopeptide (4b, 72%) containing the binding site of lambda repressor and a peptide containing the consensus sequence of the DNA binding helix of the helix turn-helix-proteins was obtain...

journal_title：Bioorganic & medicinal chemistry letters

authors： McMinn DL,Greenberg MM

更新日期：1999-02-22 00:00:00

abstract：:Novel bendazac analogues and their salts have been designed and prepared. The resulting compounds (13c-d, 15c, 17c) showed very good aqueous solubility (>100 mg/mL). An in vitro assay showed that most of the resulting compounds had potent protective activity against the oxidative damage. Particularly, compound 13d was...

journal_title：Bioorganic & medicinal chemistry letters

authors： Shen H,Gou S,Shen J,Zhu Y,Zhang Y,Chen X

更新日期：2010-04-01 00:00:00

abstract：:Naphthalimide-derived azoles as a new type of antimicrobial agents were synthesized and evaluated for their efficiency in vitro against eight bacteria and two fungi by two fold serial dilution technique. Most title compounds exhibited good antimicrobial potency with low MIC values ranging from 1 to 16μg/mL. Notably, s...

journal_title：Bioorganic & medicinal chemistry letters

authors： Zhang YY,Zhou CH

更新日期：2011-07-15 00:00:00

abstract：:To elucidate the inhibitory action of acetogenins, the most potent inhibitors of mitochondrial complex I, we synthesized an acetogenin analogue which possesses a ubiquinone ring (i.e., the physiological substrate of complex I) in place of the alpha,beta-unsaturated gamma-lactone ring of natural acetogenins, and named ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Yabunaka H,Abe M,Kenmochi A,Hamada T,Nishioka T,Miyoshi H

更新日期：2003-07-21 00:00:00

abstract：:We disclose a new compound class of potent and selective alpha-1A adrenergic receptor antagonists exemplified by the geminally, disubstituted cyclic imide 7. The optimization of lead compounds resulting in the cyclic imide motif is highlighted. The results of in vitro and in vivo studies of selected compounds are pres...

journal_title：Bioorganic & medicinal chemistry letters

authors： DiPardo RM,Patane MA,Newton RC,Price R,Broten TP,Chang RS,Ransom RW,Di Salvo J,Freidinger RM,Bock MG

更新日期：2001-07-23 00:00:00

abstract：:Two novel acridone-quinoline alkaloids, acriquinoline A (1) and acriquinoline B (2), together with twenty-two known compounds were isolated from the methanol extract of the root of Citrus reticulata Blanco. The structures of all compounds were determined by comprehensive analyses of their 1D and 2D NMR and mass spectr...

journal_title：Bioorganic & medicinal chemistry letters

authors： Fomani M,Ngeufa Happi E,Nouga Bisoue A,Ndom JC,Kamdem Waffo AF,Sewald N,Wansi JD

更新日期：2016-01-15 00:00:00

abstract：:This Letter describes, for the first time, the synthesis and SAR, developed through an iterative analog library approach, that led to the discovery of the positive allosteric modulator (PAM) of the metabotropic glutamate receptor mGluR5 CPPHA. Binding to a unique allosteric binding site distinct from other mGluR5 PAMs...

journal_title：Bioorganic & medicinal chemistry letters

authors： Zhao Z,Wisnoski DD,O'Brien JA,Lemaire W,Williams DL Jr,Jacobson MA,Wittman M,Ha SN,Schaffhauser H,Sur C,Pettibone DJ,Duggan ME,Conn PJ,Hartman GD,Lindsley CW

更新日期：2007-03-01 00:00:00

abstract：:Several shortened peptide analogues of the N-terminal domain of GPR1, an orphan G protein-coupled receptor (GPCR), were prepared and their anti-HIV-1 activities were evaluated. Some of the prepared compounds, especially sulfated derivatives, showed potent inhibitory activity against a broad range of HIV-1, including T...

journal_title：Bioorganic & medicinal chemistry letters

authors： Ikeda K,Konishi K,Sato M,Hoshino H,Tanaka K

更新日期：2001-10-08 00:00:00

abstract：:Inhibition of the aspartyl protease renin is considered as an efficient approach for treating hypertension. Lately, we described the discovery of a novel class of direct renin inhibitors which comprised a pyrrolidine scaffold (e.g., 2). Based on the X-ray structure of the lead compound 2 bound to renin we predicted th...

journal_title：Bioorganic & medicinal chemistry letters

authors： Sellner H,Cottens S,Cumin F,Ehrhardt C,Kosaka T,Lorthiois E,Ostermann N,Webb RL,Rigel DF,Wagner T,Maibaum J

更新日期：2015-04-15 00:00:00

abstract：:The synthesis of the beta-peptide 1 by the postsynthetic modification of the corresponding amino-containing peptide 3 is described. The potential of 1 to act as a template for the ligation of complementary negatively-charged peptides is discussed. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Wen K,Han H,Hoffman TZ,Janda KD,Orgel LE

更新日期：2001-03-12 00:00:00

abstract：:The emergence and spread of multidrug-resistant strains of the human pathological bacteria are generating a threat to public health worldwide. In the current study, a series of PC190723 derivatives was synthesized and investigated for their antimicrobial activity. The compounds exhibited good activity against several ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Hu Z,Zhang S,Zhou W,Ma X,Xiang G

更新日期：2017-04-15 00:00:00

abstract：:Prothrombin is a vitamin K-dependent serine protease and plays pivotal roles in both procoagulant and anticoagulant pathway of hemostasis. In this study, prothrombin purified from porcine plasma was modified through PEGylation at N-terminal residue using 40 kDa PEG-phenyl-isothiocyanate (PIT-PEG40K). The monoPEGylated...

journal_title：Bioorganic & medicinal chemistry letters

authors： Zhou JG,Chen YM

更新日期：2011-06-01 00:00:00

abstract：:Considering the complex etiology of Alzheimer's disease (AD), multifunctional agents may be beneficial for the treatment of this disease. A series of DL-3-n-butylphthalide-Edaravone hybrids were designed, synthesized and evaluated as novel dual inhibitors of amyloid-β aggregation and monoamine oxidases. Among them, co...

journal_title：Bioorganic & medicinal chemistry letters

authors： Qiang X,Li Y,Yang X,Luo L,Xu R,Zheng Y,Cao Z,Tan Z,Deng Y

更新日期：2017-02-15 00:00:00

abstract：:A series of thirty-seven 1,3,5-triazine analogues have been synthesized, characterized and evaluated for their antiproliferative activity against a panel of four different human cancer cell lines such as HeLa, HepG2, A549 and MCF-7. Most of the 1,3,5-triazine analogues exhibited promising antiproliferative activity ag...

journal_title：Bioorganic & medicinal chemistry letters

authors： Narva S,Chitti S,Amaroju S,Bhattacharjee D,Rao BB,Jain N,Alvala M,Sekhar KVGC

更新日期：2017-08-15 00:00:00

abstract：:SAR studies for the exploration a novel class of anti-human immunodeficiency virus type 1 (HIV-1) agents based on the hematoxylin structure (1) are described. The systematic deoxygenations of 1 including asymmetric synthesis were conducted to obtain a compound showing high potencies for inhibiting the nuclear import a...

journal_title：Bioorganic & medicinal chemistry letters

authors： Ishii H,Koyama H,Hagiwara K,Miura T,Xue G,Hashimoto Y,Kitahara G,Aida Y,Suzuki M

更新日期：2012-02-01 00:00:00

abstract：:We have synthesized and evaluated a new series of acyclic P4-benzoxaborole-based HCV NS3 protease inhibitors. Structure-activity relationships were investigated, leading to the identification of compounds 5g and 17 with low nanomolar potency in the enzymatic and cell-based replicon assay. The linker-truncated compound...

journal_title：Bioorganic & medicinal chemistry letters

authors： Li X,Zhang S,Zhang YK,Liu Y,Ding CZ,Zhou Y,Plattner JJ,Baker SJ,Bu W,Liu L,Kazmierski WM,Duan M,Grimes RM,Wright LL,Smith GK,Jarvest RL,Ji JJ,Cooper JP,Tallant MD,Crosby RM,Creech K,Ni ZJ,Zou W,Wright J

更新日期：2011-04-01 00:00:00

abstract：:Sulfonamide linker-based inhibitors with extended linear structure were designed and synthesized with the aim of producing multifunctional agents against several processes involved in the pathology of Alzheimer's disease (AD). The potency of the compounds were assessed in the inhibition of Aβ self-assembly (fibril and...

journal_title：Bioorganic & medicinal chemistry letters

authors： Bag S,Tulsan R,Sood A,Cho H,Redjeb H,Zhou W,LeVine H 3rd,Török B,Török M

更新日期：2015-02-01 00:00:00

abstract：:Current techniques for the identification of DNA adduct-inducing and DNA interstrand crosslinking agents include electrophoretic crosslinking assays, electrophoretic gel shift assays, DNA and RNA stop assays, mass spectrometry-based methods and 32P-post-labelling. While these assays provide considerable insight into t...

journal_title：Bioorganic & medicinal chemistry letters

authors： Medan J,Sleebs BE,Lackovic K,Watson KG,Evison BJ,Phillips DR,Cutts SM

更新日期：2021-01-21 00:00:00

abstract：:An orally bioavailable series of ketoamide-based cathepsin K inhibitors with good pharmacokinetic properties has been identified. Starting from a potent inhibitor endowed with poor drug properties, conformational constraint of the P(2)-P(3) linker and modifications to P(1') elements led to an enhancement in potency, s...

journal_title：Bioorganic & medicinal chemistry letters

authors： Barrett DG,Boncek VM,Catalano JG,Deaton DN,Hassell AM,Jurgensen CH,Long ST,McFadyen RB,Miller AB,Miller LR,Payne JA,Ray JA,Samano V,Shewchuk LM,Tavares FX,Wells-Knecht KJ,Willard DH Jr,Wright LL,Zhou HQ

更新日期：2005-08-01 00:00:00

abstract：:This study describes two novel synthetic procedures to prepare APM, a useful tool for the analysis and the purification of thiolated biomolecules. The methods developed are technically simple and robust and allowed the first full characterization of pure APM. Moreover, the efficacy of APM, as a biochemical tool, was d...

journal_title：Bioorganic & medicinal chemistry letters

authors： Lemau de Talancé V,Bauer F,Hermand D,Vincent SP

更新日期：2011-12-15 00:00:00

abstract：:The vertebrate Cys-loop family of ligand-gated ion channels (LGICs) are comprised of nicotinic acetylcholine (nAChR), serotonin type 3 (5-HT3R), γ-aminobutyric acid (GABAAR), and glycine (GlyR) receptors. Here, we review efforts to discover selective small molecules targeting one or more Cys-loop receptors, with a foc...

journal_title：Bioorganic & medicinal chemistry letters

authors： Sparling BA,DiMauro EF

更新日期：2017-08-01 00:00:00

abstract：:Total syntheses of prenylated pyrrolidinoindoline alkaloids, (-)-mollenines A [(-)-1'] and B (2'), were accomplished via three- and four-step sequences including a bioinspired indole prenylation reaction followed by dioxomorpholine ring formation. Then, the stereochemistry of mollenines A and B was reassigned to 3S,6S...

journal_title：Bioorganic & medicinal chemistry letters

authors： Shiomi S,Wada K,Umeda Y,Kato H,Tsukamoto S,Ishikawa H

更新日期：2018-09-01 00:00:00

abstract：:We report here the synthesis and biological evaluation of a series of 37 compounds as precursors of potent antimalarial bis-thiazolium salts (T3 and T4). These prodrugs were either thioester, thiocarbonate or thiocarbamate type and were synthesized in one step by reaction of an alkaline solution of the parent drug wit...

journal_title：Bioorganic & medicinal chemistry letters

authors： Caldarelli SA,Boisbrun M,Alarcon K,Hamzé A,Ouattara M,Salom-Roig X,Maynadier M,Wein S,Peyrottes S,Pellet A,Calas M,Vial H

更新日期：2010-07-01 00:00:00

abstract：:Bromodomains (BRDs) recognize acetyl-lysine modified histone tails mediating epigenetic processes. BRD4, a protein containing two bromodomains, has emerged as an attractive therapeutic target for several types of cancer as well as inflammatory diseases. Using a fragment-based in silico screening approach, we identifie...

journal_title：Bioorganic & medicinal chemistry letters

authors： Zhao H,Gartenmann L,Dong J,Spiliotopoulos D,Caflisch A

更新日期：2014-06-01 00:00:00