Potent and selective inhibitors of the proteasome: dipeptidyl boronic acids.

abstract：:We present the synthesis and biological evaluation of a collection of s-triazine derivatives as a novel scaffold of compounds with the capability to inhibit the PGE₂ production in LPS-induced RAW 264.7 macrophage cells. A total of 12 derivatives were synthesized and assayed for PGE₂ reduction at 10 μM concentration. T...

journal_title：Bioorganic & medicinal chemistry letters

authors： Kang SM,Lee J,Jin JH,Kim M,Lee S,Lee HH,Shin JS,Lee KT,Lee JY

更新日期：2014-12-01 00:00:00

abstract：:Modulating the structural dynamics of biomembranes by inducing bilayer curvature and lipid packing defects has been highlighted as a practical tool to modify membrane-dependent cellular processes. Previously, we have reported on an amphipathic helical peptide derived from the N-terminal segment (residues 1-18, EpN18) ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Hsu WY,Masuda T,Afonin S,Sakai T,Arafiles JVV,Kawano K,Hirose H,Imanishi M,Ulrich AS,Futaki S

更新日期：2020-06-15 00:00:00

abstract：:A novel class of HCV NS5B RNA dependent RNA polymerase inhibitors containing 3,4-dihydro-1H-[1]-benzothieno[2,3-c]pyran and 3,4-dihydro-1H-pyrano[3,4-b]benzofuran scaffolds were designed and synthesized. Optimization of the alkyl substituent in the pyran ring showed preference for an n-propyl group, while 5,8-disubsti...

journal_title：Bioorganic & medicinal chemistry letters

authors： Gopalsamy A,Aplasca A,Ciszewski G,Park K,Ellingboe JW,Orlowski M,Feld B,Howe AY

更新日期：2006-01-15 00:00:00

abstract：:New bis-pyridinium oxime reactivators connected with CH2O(CH2)n OCH2 linkers between two pyridinium rings were designed and synthesized, and their reactivation potency was evaluated for AChE inhibited by organophosphorus VX agent. Among the prepared compounds, 1,2-dimethoxy-ethylene-bis-N,N'-4-pyridiumaldoxime dichlor...

journal_title：Bioorganic & medicinal chemistry letters

authors： Oh KA,Yang GY,Jun D,Kuca K,Jung YS

更新日期：2006-09-15 00:00:00

abstract：:The synthesis and evaluation of antiplasmodial activity of benzothiazole, benzimidazole, benzoxazole and pyridine analogues of amodiaquine is hereby reported. Benzothiazole and benzoxazole analogues with a protonatable tertiary nitrogen atom possessed excellent activity against the W2 and K1 chloroquine resistant stra...

journal_title：Bioorganic & medicinal chemistry letters

authors： Ongarora DS,Gut J,Rosenthal PJ,Masimirembwa CM,Chibale K

更新日期：2012-08-01 00:00:00

abstract：:γ-Butyrobetaine hydroxylase (BBOX) is a 2-oxoglutarate and Fe(II) dependent oxygenase that catalyses an essential step during carnitine biosynthesis in animals. BBOX is inhibited by ejection of structural zinc by a set of selenium containing analogues. Previous structural analyses indicated that an undisrupted N-termi...

journal_title：Bioorganic & medicinal chemistry letters

authors： Rydzik AM,Brem J,Struwe WB,Kochan GT,Benesch JL,Schofield CJ

更新日期：2014-11-01 00:00:00

abstract：:Incorporation of a carboxylic acid into a series of uracil derivatives as hGnRH-R antagonists resulted in a significant reduction of CYP3A4 inhibitory activity. Highly potent hGnRH antagonists with low CYP3A4 inhibitory liability, such as 8a and 8d, were identified. Thus, 8a had a K(i) of 2.2 nM at GnRH-R and an IC(50...

journal_title：Bioorganic & medicinal chemistry letters

authors： Chen C,Chen Y,Pontillo J,Guo Z,Huang CQ,Wu D,Madan A,Chen T,Wen J,Xie Q,Tucci FC,Rowbottom M,Zhu YF,Wade W,Saunders J,Bozigian H,Struthers RS

更新日期：2008-06-01 00:00:00

abstract：:Bifunctional molecules containing both a biotin and a substrate unit have been designed and synthesized for phage display screening of mutant libraries of haloalkane dehalogenase enzymes. The molecules were assembled using a convergent modular synthetic strategy. One molecule was synthesized to evaluate the concept of...

journal_title：Bioorganic & medicinal chemistry letters

authors： Pieters RJ,Fennema M,Kellogg RM,Janssen DB

更新日期：1999-01-18 00:00:00

abstract：:A series of glycosyl-thioureido sulfonamides incorporating glucosamine, galactosamine, and mannosamine tails, and sulfanilamide, halogenosulfanilamide, and metanilamide heads was synthesized. Many of the new compounds showed micromolar-submicromolar affinity for the inhibition of the cytosolic isoforms I and II of the...

journal_title：Bioorganic & medicinal chemistry letters

authors： Smaine FZ,Winum JY,Montero JL,Regainia Z,Vullo D,Scozzafava A,Supuran CT

更新日期：2007-09-15 00:00:00

abstract：:Several benzyloxybenzaldehyde analogues were prepared and found to have significant inhibitory activity toward neutrophil superoxide formation. Consequently, these compounds were evaluated for cAMP-elevating capability. Among them, benzyloxybenzaldehyde (7), exhibiting activity equivalent to forskolin, was determined ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Chang C,Kuo S,Lin Y,Wang J,Huang L

更新日期：2001-08-06 00:00:00

abstract：:In a recent paper, [Arienti, K. L.; Brunmark, A.; Axe, F. U.; McClure, K. M.; Lee, A.; Blevitt, J.; Neff, D. K.; Huang, L.; Crawford, S.; Chennagiri, R. P.; Karlsson, L.; Brietenbucher, J. G. J. Med. Chem.2005, 48, 1873], we described the discovery of a class of benzimidazole chk2 kinase inhibitors, exemplified by com...

journal_title：Bioorganic & medicinal chemistry letters

authors： McClure KJ,Huang L,Arienti KL,Axe FU,Brunmark A,Blevitt J,Breitenbucher JG

更新日期：2006-04-01 00:00:00

abstract：:The synthesis and structure-activity relationships (SAR) of novel, potent imidazo[1,2-a]pyrazine-based Aurora kinase inhibitors are described. The X-ray crystal structure of imidazo[1,2-a]pyrazine Aurora inhibitor 1j is disclosed. Compound 10i was identified as lead compound with a promising overall profile. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Belanger DB,Curran PJ,Hruza A,Voigt J,Meng Z,Mandal AK,Siddiqui MA,Basso AD,Gray K

更新日期：2010-09-01 00:00:00

abstract：:In an effort to better understand the conformational preferences that inform the biological activity of naltrexone and related naltrexol derivatives, a new synthesis of the restricted analog 3-OBn-6β,14-epoxymorphinan 4 is described. 4 was synthesized starting from naltrexone in 50% overall yield, proceeding through t...

journal_title：Bioorganic & medicinal chemistry letters

authors： Martin DJ,FitzMorris PE,Li B,Ayestas M,Sally EJ,Dersch CM,Rothman RB,Deveau AM

更新日期：2012-11-15 00:00:00

abstract：:Certain gamma-aryloxymethyl-alpha-methylene-gamma-phenyl- gamma-butyrolactones were synthesized and evaluated for their anticancer activity. These compounds demonstrated a strong growth inhibitory activity against leukemia cell lines but are relatively inactive against non-small cell lung cancers and CNS cancers. The ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Wang TC,Lee KH,Chen YL,Liou SS,Tzeng CC

更新日期：1998-10-06 00:00:00

abstract：:A series of N-substituted 3-(4-piperidinyl)-1,3-benzoxazolinones and oxindoles are reported which were found to be potent and selective muscarinic M1 agonists. By control of the physicochemical characteristics of the series, particularly the lipophilicity, compounds with good metabolic stability and excellent brain pe...

journal_title：Bioorganic & medicinal chemistry letters

authors： Johnson DJ,Forbes IT,Watson SP,Garzya V,Stevenson GI,Walker GR,Mudhar HS,Flynn ST,Wyman PA,Smith PW,Murkitt GS,Lucas AJ,Mookherjee CR,Watson JM,Gartlon JE,Bradford AM,Brown F

更新日期：2010-09-15 00:00:00

abstract：:A series of novel 9-O-arylalkyloxime analogs based on three different 16-membered macrolide scaffolds-5-O-mycaminosyltylonolide (OMT), tilmicosin, and 20-deoxy-20-(3,5-dimethyl-1-piperidin-1-yl)-OMT-was synthesized. In vitro antibiotic activities were assayed against Gram-positive Streptococcus pneumoniae and Staphylo...

journal_title：Bioorganic & medicinal chemistry letters

authors： Fu H,Marquez S,Gu X,Katz L,Myles DC

更新日期：2006-03-01 00:00:00

abstract：:We have increased the potency of imidazo[1,2-b]pyridazine derivatives as IKKβ inhibitors with two strategies. One is to enhance the activity in cell-based assay by adjusting the polarity of molecules to improve permeability. Another is to increase the affinity for IKKβ by the introduction of additional substituents ba...

journal_title：Bioorganic & medicinal chemistry letters

authors： Shimizu H,Yasumatsu I,Hamada T,Yoneda Y,Yamasaki T,Tanaka S,Toki T,Yokoyama M,Morishita K,Iimura S

更新日期：2011-02-01 00:00:00

abstract：:In this letter, we describe the first synthesis of two recently isolated flavones 5-carbomethoxymethyl-7-hydroxy-2-pentylchromone (3a), 5-carboethoxymethyl-4',7-dihydroxyflavone (3b) and their derivatives (3c-t), evaluated for their antimicrobial, antioxidant and anticancer activities. Most of the synthesized compound...

journal_title：Bioorganic & medicinal chemistry letters

authors： Kamal A,Murty JN,Viswanath A,Sujitha P,Ganesh Kumar C

更新日期：2012-07-15 00:00:00

abstract：:S1P(1) receptor driven lymphopenia has proven utility in the treatment of an array of autoimmune disease states. As a part of our efforts to develop potent and selective S1P(1) receptor agonists, we have identified a novel chemical series of 4-oxo-4-(5-(5-phenyl-1,2,4-oxadiazol-3-yl)indolin-1-yl)butanoic acid S1P(1) r...

journal_title：Bioorganic & medicinal chemistry letters

authors： Buzard D,Han S,Thoresen L,Moody J,Lopez L,Kawasaki A,Schrader T,Sage C,Gao Y,Edwards J,Barden J,Thatte J,Fu L,Solomon M,Liu L,Al-Shamma H,Gatlin J,Le M,Xing C,Espinola S,Jones RM

更新日期：2011-10-01 00:00:00

abstract：:Distamycin and nitrogen mustard conjugates, in which the nitrogen mustard unit was coupled to the C-terminus of the pyrrole, were synthesized. The switching of the nitrogen mustard unit from the N-terminus to the C-terminus did not compromise the compound's cytotoxicity. Compound 3, bearing three pyrrole units, was hi...

journal_title：Bioorganic & medicinal chemistry letters

authors： Wang Y,Wright SC,Larrick JW

更新日期：2003-02-10 00:00:00

abstract：:Eight peptoids have been synthesized as peptidomimetics of the cytostatic Dolastatin 15, a depsipeptide isolated from the Indian sea hare Dolabella auricularia. The compounds have been tested against several human cancer cell lines and did not show any cytostatic properties. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Schmitt J,Bernd M,Kutscher B,Kessler H

更新日期：1998-02-17 00:00:00

abstract：:A series of benzylidene-1H-indol-2-one (oxindole) derivatives was synthesized and evaluated as cRaf-1 kinase inhibitors. The key features of the molecules were the donor/acceptor motif common to kinase inhibitors and a critical acidic phenol flanked by two substitutions. Diverse 5-position substitutions provided compo...

journal_title：Bioorganic & medicinal chemistry letters

authors： Lackey K,Cory M,Davis R,Frye SV,Harris PA,Hunter RN,Jung DK,McDonald OB,McNutt RW,Peel MR,Rutkowske RD,Veal JM,Wood ER

更新日期：2000-02-07 00:00:00

abstract：:The design and synthesis of macrocyclic inhibitors of human rhinovirus 3C protease is described. A macrocyclic linkage of the P1 and P3 residues, and the subsequent structure-based optimization of the macrocycle conformation and size led to the identification of a potent biochemical inhibitor 10 with sub-micromolar an...

journal_title：Bioorganic & medicinal chemistry letters

authors： Namoto K,Sirockin F,Sellner H,Wiesmann C,Villard F,Moreau RJ,Valeur E,Paulding SC,Schleeger S,Schipp K,Loup J,Andrews L,Swale R,Robinson M,Farady CJ

更新日期：2018-03-01 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：:In previous study, a series of benzamides was identified as potent antipsychotic agents. As a continuation of the program to discover novel antipsychotics, herein we reported the evaluation of a series of pyridinecarboxamide derivatives. The most promising compound 7h not only held good activities on dopamine D2, sero...

journal_title：Bioorganic & medicinal chemistry letters

authors： Xu M,Wang Y,Yang F,Wu C,Wang Z,Ye B,Jiang X,Zhao Q,Li J,Liu Y,Zhang J,Tian G,He Y,Shen J,Jiang H

更新日期：2018-02-15 00:00:00

abstract：:The piperidyl and prolyl amides of Kemp's triacid (7 and 8, respectively) have been prepared and their rates of intramolecular acylolysis measured as a function of pD. The piperidyl derivative 7 reacts approximately four-times faster (e.g., t(1/2)=3 min at 20 degrees C and pD7.7) than the previously reported pyrrolidy...

journal_title：Bioorganic & medicinal chemistry letters

authors： Dougan ML,Chin JL,Solt K,Hansen DE

更新日期：2004-08-16 00:00:00

abstract：:A series of methoxycarbonyl group modified nidulalin A analogs were synthesized to improve stability against esterases. The amide derivatives showed cytotoxic activity along with inhibitory activity against DNA topoisomerase II. Among the analogs, amide 9a exhibited antitumor activity in Colon 26 murine tumor model. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Sato S,Suga Y,Yoshimura T,Nakagawa R,Tsuji T,Umemura K,Andoh T

更新日期：1999-09-20 00:00:00

abstract：:A series of 2-phenylspiroindenediones was prepared. The spiroindenediones were found to be less active than the corresponding spiroindenes as estrogen receptor ligands and failed to demonstrate the receptor subtype selectivity that had been anticipated from molecular modeling. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Blizzard TA,Mosley RT,Birzin ET,Chan W,Hammond ML

更新日期：2004-03-08 00:00:00

abstract：:Two series of 5-phenyl furocoumarin derivatives were designed and prepared based on our previous research. All new compounds were characterized by (1)H NMR, (13)C NMR and mass spectra. Furthermore, they were screened for their vasodilatory activity on the mesenteric artery of Sprague-Dawley rats, and they all presente...

journal_title：Bioorganic & medicinal chemistry letters

authors： Wang C,Wang T,Huang L,Lu W,Zhang J,He H

更新日期：2016-01-15 00:00:00

abstract：:New Lp-PLA(2) inhibitors were synthesized by the bioisosteric replacement of the amide group of Darapladib with an imidazole or a triazole. Unfortunately, the inhibitory activities of these derivatives were lower than that of Darapladib. But interestingly, a series of quaternary ammonium salts that were isolated as by...

journal_title：Bioorganic & medicinal chemistry letters

authors： Wang K,Xu W,Liu Y,Zhang W,Wang W,Shen J,Wang Y

更新日期：2013-03-01 00:00:00