The discovery and synthesis of highly potent, A2a receptor agonists.

abstract：:An Mg2+ and ATP dependent beta-lactam synthetase (BLS) catalyses formation of a beta-lactam ring during the biosynthesis of clavulanic acid, an important beta-lactamase inhibitor. An epimeric mixture of a 2-methylated derivative of the natural BLS substrate N2-(2-carboxyethyl)-L-arginine was synthesised and found to b...

journal_title：Bioorganic & medicinal chemistry letters

authors： Sleeman MC,MacKinnon CH,Hewitson KS,Schofield CJ

更新日期：2002-02-25 00:00:00

abstract：:Selectivity of enzymatic and chemical methods for transesterifications of cytarabine with divinyl dicarboxylates was described. Catalysis by lipase acrylic resin from Candida antarctica (CAL-B) in acetone facilitated the single step synthesis of polymerizable 5'-O-acyl cytarabine derivatives in high yields, while the ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Wang N,Chen ZC,Lu DS,Lin XF

更新日期：2005-09-15 00:00:00

abstract：:Oxytocin (OT) is a neuropeptide involved in a wide variety of physiological actions, both peripherally and centrally. Many human studies have revealed the potential of OT to treat autism spectrum disorders and schizophrenia. OT interacts with the OT receptor (OTR) as well as vasopressin 1a and 1b receptors (V1aR, V1bR...

journal_title：Bioorganic & medicinal chemistry letters

authors： Adachi Y,Sakimura K,Shimizu Y,Nakayama M,Terao Y,Yano T,Asami T

更新日期：2017-06-01 00:00:00

abstract：:The discovery, synthesis, and SAR of chromanes as ER alpha subtype selective ligands are described. X-ray studies revealed that the origin of the ER alpha-selectivity resulted from a C-4 trans methyl substitution to the cis-2,3-diphenyl-chromane platform. Selected compounds from this class demonstrated very potent in ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Tan Q,Blizzard TA,Morgan JD 2nd,Birzin ET,Chan W,Yang YT,Pai LY,Hayes EC,DaSilva CA,Warrier S,Yudkovitz J,Wilkinson HA,Sharma N,Fitzgerald PM,Li S,Colwell L,Fisher JE,Adamski S,Reszka AA,Kimmel D,DiNinno F,Rohre

更新日期：2005-03-15 00:00:00

abstract：:In this report, the design and synthesis of a series of pyrimidine based adenosine A(2A) antagonists are described. The strategy and outcome of expanding SAR exploration to attenuate hERG and improve selectivity over A(1) are discussed. Compound 33 exhibited excellent potency, selectivity over A(1), and reduced hERG l...

journal_title：Bioorganic & medicinal chemistry letters

authors： Moorjani M,Zhang X,Chen Y,Lin E,Rueter JK,Gross RS,Lanier MC,Tellew JE,Williams JP,Lechner SM,Malany S,Santos M,Ekhlassi P,Castro-Palomino JC,Crespo MI,Prat M,Gual S,Díaz JL,Saunders J,Slee DH

更新日期：2008-02-15 00:00:00

abstract：:A urokinase targeting conjugate of 2'-deoxy-5-fluorouridine (5-FUdr) was synthesized and tested for tumor-cell selective cytotoxicity in vitro. The 5-FUdr prodrug 2'-deoxy-5-fluoro-3'-O-(3-carboxypropanoyl)uridine (5-FUdrsuccOH) containing an ester-labile succinate linker was attached to the specific urokinase inhibit...

journal_title：Bioorganic & medicinal chemistry letters

authors： Vine KL,Locke JM,Bremner JB,Pyne SG,Ranson M

更新日期：2010-05-01 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：:5-Hydroxyalkyl-4-phenylpyridines have been identified as a novel class of glucagon antagonists with potential utility for the treatment of diabetes. A lead structure with moderate activity was discovered through a high throughput screening assay. Structure-activity relationships led to the discovery of a potent antago...

journal_title：Bioorganic & medicinal chemistry letters

authors： Ladouceur GH,Cook JH,Doherty EM,Schoen WR,MacDougall ML,Livingston JN

更新日期：2002-02-11 00:00:00

abstract：:The identification of a novel series of PKCθ inhibitors and subsequent optimization using docking based on a crystal structure of PKCθ is described. SAR was rapidly generated around an amino pyridine-ketone hit; (6-aminopyridin-2-yl)(2-aminopyridin-3-yl)methanone 2 leading to compound 21 which significantly inhibits p...

journal_title：Bioorganic & medicinal chemistry letters

authors： Jimenez JM,Davis C,Boyall D,Fraysse D,Knegtel R,Settimo L,Young S,Bolton C,Chiu P,Curnock A,Rasmussen R,Tanner A,Ager I

更新日期：2012-07-15 00:00:00

abstract：:Novel derivatives of the highly potent and selective histamine H3-receptor antagonist ciproxifan (3) with different chain lengths as well as with structural variants of the cyclopropyl ketone moiety have been prepared and screened for their antagonist H3-receptor potencies in vitro and in vivo. Some derivatives (2, 6-...

journal_title：Bioorganic & medicinal chemistry letters

authors： Stark H,Ligneau X,Sadek B,Ganellin CR,Arrang JM,Schwartz JC,Schunack W

更新日期：2000-10-16 00:00:00

abstract：:We have previously reported the essential structure of the opioid κ receptor agonist nalfurafine hydrochloride (TRK-820) for binding to the κ receptor. In the course of this study, we focused on the effect of the substituent at 17-N in nalfurafine on the binding affinity for the κ receptor. The exchange of the 17-N su...

journal_title：Bioorganic & medicinal chemistry letters

authors： Nemoto T,Yamamoto N,Wada N,Harada Y,Tomatsu M,Ishihara M,Hirayama S,Iwai T,Fujii H,Nagase H

更新日期：2013-01-01 00:00:00

abstract：:A structure-activity relationship study was undertaken to address the lack of oral exposure of the H3 antagonist 1, which incorporated an arylketone. Among a number of sub-series, the 4H-pyrido[1,2-a]pyrimidin-4-one analog 21 showed an improved PK profile in rat and mouse and was active in an obesity model. The pyrimi...

journal_title：Bioorganic & medicinal chemistry letters

authors： Xiao D,Palani A,Sofolarides M,Aslanian R,West RE Jr,Williams SM,Wu RL,Hwa J,Sondey C,Lachowicz J,Korfmacher WA

更新日期：2012-05-01 00:00:00

abstract：:The synthesis of six α,β,-unsaturated amides and six 2,4-disubstituted oxazolines derivatives and their evaluation against two Mycobacterium tuberculosis strains (sensitive H37Rv and a resistant clinical isolate) is reported. 2,4-Disubstituted oxazolines (S)-3b,d,e were the most active in the sensitive strain with a M...

journal_title：Bioorganic & medicinal chemistry letters

authors： Avalos-Alanís FG,Hernández-Fernández E,Carranza-Rosales P,López-Cortina S,Hernández-Fernández J,Ordóñez M,Guzmán-Delgado NE,Morales-Vargas A,Velázquez-Moreno VM,Santiago-Mauricio MG

更新日期：2017-02-15 00:00:00

abstract：:Four stereoisomeric hybrids of the polyketide natural products callystatin A and leptomycin B have been prepared by parallel synthetic routes involving chiral allenylstannane methodology. Like their natural counterparts, these hybrids exhibit nanomolar levels of cytotoxicity toward HCT-116 human colon cancer cells. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Marshall JA,Mikowski AM,Bourbeau MP,Schaaf GM,Valeriote F

更新日期：2006-01-15 00:00:00

abstract：:A series of 5-aminomethylquinoxaline-2,3-diones have been identified as potent and selective AMPA antagonists. Some of these compounds are also active at the glycine-binding site of the NMDA receptors. A number of these novel, water-soluble quinoxaline-2,3-dione derivatives display protective effects in the electrosho...

journal_title：Bioorganic & medicinal chemistry letters

authors： Auberson YP,Bischoff S,Moretti R,Schmutz M,Veenstra SJ

更新日期：1998-01-06 00:00:00

abstract：:A series of alpha-alkyl-alpha-amino-beta-sulphone hydroxamates was prepared and evaluated for potency versus MMP-2 and MMP-13, and for selectivity versus MMP-1. Low nanomolar potency was obtained with selectivity versus MMP-1 ranging from >10 to >1000. Selected compounds were orally bioavailable. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Becker DP,DeCrescenzo G,Freskos J,Getman DP,Hockerman SL,Li M,Mehta P,Munie GE,Swearingen C

更新日期：2001-10-22 00:00:00

abstract：:Elevated triglycerides (TG) contribute towards increased risk for cardiovascular disease. Lipoprotein lipase (LPL) is an enzyme that is responsible for the metabolism of core triglycerides of very-low density lipoproteins (VLDL) and chylomicrons in the vasculature. In this study, we explored the structure-activity rel...

journal_title：Bioorganic & medicinal chemistry letters

authors： Geldenhuys WJ,Caporoso J,Leeper TC,Lee YK,Lin L,Darvesh AS,Sadana P

更新日期：2017-01-15 00:00:00

abstract：:Polyoxometalates (POMs) are interesting biomedical agents due to their versatile anticancer and antiviral properties, such as remarkable anti-HIV activity. Although POMs are tunable and easily accessible inorganic drug prototypes in principle, their full potential can only be tapped by enhancing their biocompatibility...

journal_title：Bioorganic & medicinal chemistry letters

authors： Flütsch A,Schroeder T,Grütter MG,Patzke GR

更新日期：2011-02-15 00:00:00

abstract：:The selectivity and the binding affinity of previously reported carborane-containing ligands 2 and 3 toward ERβ remains to be optimized. To improve their biological profiles, a series of iodinated carboranyl phenol derivatives (4-6) were designed and synthesized as prospective ERβ-selective ligands with high affinity....

journal_title：Bioorganic & medicinal chemistry letters

authors： Ohta K,Ogawa T,Endo Y

更新日期：2017-09-01 00:00:00

abstract：:Hsp90 represents a promising target for the development of both anti-cancer and neuroprotective agents. Structure-activity relationship studies on novobiocin and novobiocin analogues, led to the development of KU-32 and recently, KU-596, as lead compounds for the potential treatment of neurodegenerative diseases. Simi...

journal_title：Bioorganic & medicinal chemistry letters

authors： Zhao H,Anyika M,Girgis A,Blagg BS

更新日期：2014-08-01 00:00:00

abstract：:Telomeric G-rich single-stranded DNA can adopt a G-tetraplex structure which has been shown to inhibit telomerase activity. We have examined benzoindoloquinolines derivatives for their ability to stabilize an intramolecular G-quadruplex. The increase in T(m) value of the G-quadruplex was associated with telomerase inh...

journal_title：Bioorganic & medicinal chemistry letters

authors： Alberti P,Schmitt P,Nguyen CH,Rivalle C,Hoarau M,Grierson DS,Mergny JL

更新日期：2002-04-08 00:00:00

abstract：:During development of nitroheterocycles with potential antimycobacterial activities we have tested against Mycobacterium tuberculosis a number of pyrroles strictly related to pyrrolnitrin, an antifungal antibiotic isolated from Streptomyces pyrrocinia. Some of the tested arylpyrrole derivatives and pyrrolnitrin have s...

journal_title：Bioorganic & medicinal chemistry letters

authors： Di Santo R,Costi R,Artico M,Massa S,Lampis G,Deidda D,Pompei R

更新日期：1998-10-20 00:00:00

abstract：:The synthesis and structure-activity relationships (SAR) of Chk1 inhibitors based on a 5,10-dihydro-dibenzo[b,e][1,4]diazepin-11-one core are described. Specifically, an exploration of the 7 and 8 positions on this previously disclosed core afforded compounds with improved enzymatic and cellular potency. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Hasvold LA,Wang L,Przytulinska M,Xiao Z,Chen Z,Gu WZ,Merta PJ,Xue J,Kovar P,Zhang H,Park C,Sowin TJ,Rosenberg SH,Lin NH

更新日期：2008-04-01 00:00:00

abstract：:Four novel porphyrins containing nitric oxide (NO) donors were synthesized, and the structures of all the products were characterized by IR, UV-vis, (1)H NMR, and elementary analysis. Interestingly, these new compounds not only were able to release NO, but also showed cancer cell-oriented accumulation. Higher accumula...

journal_title：Bioorganic & medicinal chemistry letters

authors： Liu W,Liu C,Gong C,Lin W,Guo C

更新日期：2009-03-15 00:00:00

abstract：:In this communication, human 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1) inhibitory activities of a novel series of diarylsulfones are described. Optimization of this series resulted in several highly potent 11β-HSD1 inhibitors with excellent pharmacokinetic (PK) properties. Compound (S)-25 showed excellent eff...

journal_title：Bioorganic & medicinal chemistry letters

authors： Yan X,Wang Z,Sudom A,Cardozo M,DeGraffenreid M,Di Y,Fan P,He X,Jaen JC,Labelle M,Liu J,Ma J,McMinn D,Miao S,Sun D,Tang L,Tu H,Ursu S,Walker N,Ye Q,Powers JP

更新日期：2010-12-01 00:00:00

abstract：:A series of novel arylsulfonylpropargylglycinamide derivatives was investigated as thrombin inhibitors in which the SAR was focused on substituents at the acetylenic terminus. Several compounds in this series were identified as potent thrombin inhibitors (Ki up to 5 nM) that are highly selective over trypsin and other...

journal_title：Bioorganic & medicinal chemistry letters

authors： Lee K,Hwang SY,Park CW

更新日期：1999-04-05 00:00:00

abstract：:Synthesis of nitrone derivatives of trolox is described. Their biological evaluation was performed in vitro for scavenging different free radicals, inhibiting Fe(2+)-induced lipid peroxidation, and in vivo in a permanent middle cerebral artery occlusion model in mice. New compounds exert pharmacological activities com...

journal_title：Bioorganic & medicinal chemistry letters

authors： Balogh GT,Vukics K,Könczöl A,Kis-Varga A,Gere A,Fischer J

更新日期：2005-06-15 00:00:00

abstract：:A series of 5,6-diaryl-2-amino-pyrazines were prepared and found to have antagonist-like properties at the CB1 receptor. Subsequent SAR studies optimized both receptor potency and drug-like properties including solubility and Cytochrome-P450 inhibition potential. Optimized compounds were demonstrated to be inverse ago...

journal_title：Bioorganic & medicinal chemistry letters

authors： Wustrow DJ,Maynard GD,Yuan J,Zhao H,Mao J,Guo Q,Kershaw M,Hammer J,Brodbeck RM,Near KE,Zhou D,Beers DS,Chenard BL,Krause JE,Hutchison AJ

更新日期：2008-06-01 00:00:00

abstract：:High throughput screening for β-lactamase inhibitors afforded biphenyl hits such as 1. Hit confirmation and X-ray soaking experiments with Pseudomonas Aeruginosa AmpC enzyme led to the identification of an aryl boronic acid-serine complex 4, which was formed from phenyl boronic acid 8 (an impurity in compound 1) and e...

journal_title：Bioorganic & medicinal chemistry letters

authors： Yang SW,Pan J,Root Y,Scapin G,Xiao L,Su J

更新日期：2020-01-15 00:00:00

abstract：:Benzylamides of pentanedioic acid were identified as inhibitors of 11beta-hydroxysteroid dehydrogenase type 1 (11beta-HSD1) by high-throughput screening. Optimisation to 2-adamantyl amides yielded inhibitors with single digit nanomolar IC(50)s on the 11beta-HSD1 human isoform. The hydroxy adamantyl amide lead compound...

journal_title：Bioorganic & medicinal chemistry letters

authors： Roche D,Carniato D,Leriche C,Lepifre F,Christmann-Franck S,Graedler U,Charon C,Bozec S,Doare L,Schmidlin F,Lecomte M,Valeur E

更新日期：2009-05-15 00:00:00