Improving selectivity of dopamine D3 receptor ligands.

abstract：:The synthesis, SAR, pharmacokinetic profile, and modeling studies of both monocyclic and fused pyrazoles containing substituted N-arylpiperidinyl P4 moieties that are potent and selective factor Xa inhibitors will be discussed. Fused pyrazole analog 16a, with a 2'-methylsulfonylphenyl piperidine P4 group, was shown to...

journal_title：Bioorganic & medicinal chemistry letters

authors： Qiao JX,Cheng X,Smallheer JM,Galemmo RA,Drummond S,Pinto DJ,Cheney DL,He K,Wong PC,Luettgen JM,Knabb RM,Wexler RR,Lam PY

更新日期：2007-03-01 00:00:00

abstract：:Indoleamine 2,3-dioxygenase 2 (IDO2) is a potential therapeutic target for the treatment of diseases that involve immune escape such as cancer. In contrast to IDO1, only a very limited number of inhibitors have been described for IDO2 due to inherent difficulties in expressing and purifying a functionally active, solu...

journal_title：Bioorganic & medicinal chemistry letters

authors： Röhrig UF,Majjigapu SR,Caldelari D,Dilek N,Reichenbach P,Ascencao K,Irving M,Coukos G,Vogel P,Zoete V,Michielin O

更新日期：2016-09-01 00:00:00

abstract：:The first enantioselective biocatalytic synthesis of (S)-monastrol has been developed via an unexpected and unusual enzymatic pathway as suitable route. Whereas attempts for a direct hydrolysis of racemic monastrol were not successful, formation of racemic O-butanoyl monastrol and subsequent enantioselective hydrolysi...

journal_title：Bioorganic & medicinal chemistry letters

authors： Blasco MA,Thumann S,Wittmann J,Giannis A,Gröger H

更新日期：2010-08-01 00:00:00

abstract：:A collection of aryl sulfonamido indanes based on the lead compound 1 was synthesized and evaluated for Kv1.5 inhibitory activity. Kv1.5 inhibitors have the potential to be atrium-selective agents for treatment of atrial fibrillation. (1R,2R)-1 has an IC(50) of 0.033microM against Kv1.5 and is selective against other ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Gross MF,Beaudoin S,McNaughton-Smith G,Amato GS,Castle NA,Huang C,Zou A,Yu W

更新日期：2007-05-15 00:00:00

abstract：:A series of pyrazinones were prepared and evaluated as potential CRF(1)R PET imaging agents. Optimization of their CRF(1)R binding potencies and octanol-phosphate buffer phase distribution coefficients are discussed herein. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Denhart DJ,Zuev D,Ditta JL,Hartz RA,Ahuja VT,Mattson RJ,Huang H,Mattson GK,Zueva L,Nielsen JM,Kozlowski ES,Lodge NJ,Bronson JJ,Macor JE

更新日期：2013-04-01 00:00:00

abstract：:By developing a new synthetic procedure for introduction of side chains onto the camptothecin ring system, we were able to achieve the preparation of a number of analogs bearing bulky, hydrophobic groups directly attached to the 7-position. These include 7-tert-butylcamptothecin, 7-benzylcamptothecin and the correspon...

journal_title：Bioorganic & medicinal chemistry letters

authors： Manikumar G,Wadkins RM,Bearss D,Von Hoff DD,Wani MC,Wall ME

更新日期：2004-11-01 00:00:00

abstract：:Four new peptidyl aldehydes bearing proline mimetics at the P(2)-position were synthesized and studied as inhibitors of calpain I, cathepsin B, and selected serine proteases. The ring size of the P(2)-constraining residue influenced the inhibitory potency and selectivity of the compounds for calpain I compared to the ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Donkor IO,Korukonda R,Huang TL,LeCour L Jr

更新日期：2003-03-10 00:00:00

abstract：:Post-translational modulation of eIF4E through phosphorylation by Mnks is highly integral to the pathogenesis of different cancers. Therefore, inhibition of Mnks offers a strategy for cancer treatment. Herein, a series of 2'H-spiro[cyclohexane-1,3'-imidazo[1,5-a]pyridine]-1',5'-dione derivatives is presented as Mnk in...

journal_title：Bioorganic & medicinal chemistry letters

authors： Abdelaziz AM,Basnet SKC,Islam S,Li M,Tadesse S,Albrecht H,Gerber C,Yu M,Wang S

更新日期：2019-09-15 00:00:00

abstract：:Symmetrically and asymmetrically substituted 1,2,4,5-tetraoxanes were synthesized by the oxidative system H(2)O(2)/TFE in presence of MeReO(3) as a catalyst. All of the synthesized compounds were characterized spectroscopically, and evaluated for cytotoxicity, and antimalarial activity. Several of these tetraoxanes ex...

journal_title：Bioorganic & medicinal chemistry letters

authors： Atheaya H,Khan SI,Mamgain R,Rawat DS

更新日期：2008-02-15 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：:A series of lobelane and GZ-793A analogues that incorporate aromatic 4-hydroxy and 4-(2-fluoroethoxy) substituents were synthesized and evaluated for inhibition of [(3)H]dopamine (DA) uptake at the vesicular monoamine transporter-2 (VMAT2) and the dopamine transporter (DAT), and [(3)H]serotonin uptake at the serotonin...

journal_title：Bioorganic & medicinal chemistry letters

authors： Joolakanti SR,Nickell JR,Janganati V,Zheng G,Dwoskin LP,Crooks PA

更新日期：2016-05-15 00:00:00

abstract：:Macromolecular chelators have potential applications in the medical area, for instance, in treatment of iron overload-related disorders and in the treatment of external infections. In this investigation, several novel iron(III)-selective hydroxypyridinone hexadentate-terminated first and second generation dendrimeric ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Zhou T,Chen K,Kong LM,Liu MS,Ma YM,Xie YY,Hider RC

更新日期：2018-08-01 00:00:00

abstract：:Twenty three side chain analogs of the crambescidin alkaloids were prepared from the corresponding pentacyclic zwitterionic core acid. In the crambescidin 800 and 657 series, potency increased with increasing chain length. In addition, substantial variations in tumor selectivity with structure were seen. Crambescidin ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Aron ZD,Pietraszkiewicz H,Overman LE,Valeriote F,Cuevas C

更新日期：2004-07-05 00:00:00

abstract：:2-Methoxyprop-2-yl peroxides were synthesized and evaluated in vitro against Plasmodium falciparum. These acyclic artemisinin-related peroxides revealed moderate to good activity but were devoid of alkylating property towards the synthetic model of heme Mn(II)-TPP. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Cointeaux L,Berrien JF,Peyrou V,Provot O,Ciceron L,Danis M,Robert A,Meunier B,Mayrargue J

更新日期：2003-01-06 00:00:00

abstract：:Inhibition of the phosphoinositide 3-kinase (PI3K)/AKT/mammalian target of rapamycin (mTOR) signaling pathway is one of the most intensively studied approaches to cancer therapy. Rational design led to the identification of novel 7-amino-5-methyl-1,6-naphthyridin-2(1H)-one derivatives as potent PI3K/mTOR dual inhibito...

journal_title：Bioorganic & medicinal chemistry letters

authors： Lin S,Han F,Liu P,Tao J,Zhong X,Liu X,Yi C,Xu H

更新日期：2014-02-01 00:00:00

abstract：:Currently, there is an ongoing interest in the synthesis of nucleoside diphosphate analogs as important regulators in catabolism/anabolism, and their potential applications as mechanistic probes and chemical tools for bioassays. However, the pyrophosphate bond formation step remains as the bottleneck. In this Digest, ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Xu Z

更新日期：2015-09-15 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：:Aiming to develop a new (99m)Tc-labeled folate derivative for FR-positive tumor imaging, a simpler method has been established to synthesize the folate-drug conjugates with free α-carboxyl group. In this study, the conjugate pteroyl-lys-HYNIC was synthesized and labeled with (99m)Tc using tricine and TPPTS as co-ligan...

journal_title：Bioorganic & medicinal chemistry letters

authors： Guo H,Xie F,Zhu M,Li Y,Yang Z,Wang X,Lu J

更新日期：2011-04-01 00:00:00

abstract：:A new family of photonuclease, thiadiazole-naphthalimide were synthesized and evaluated. Thiadiazole group was incorporated for the first time. These compounds intercalated into DNA efficiently and damaged DNA as low as 10 microM photochemically. Mechanism experiment showed that electron transfer and radicals were inv...

journal_title：Bioorganic & medicinal chemistry letters

authors： Li Y,Xu Y,Qian X,Qu B

更新日期：2003-10-20 00:00:00

abstract：:Hypericin monocarboxylic acid was synthesized in an overall yield of 25% in four steps and radiolabelled with iodine-123 in good yield (>75%). The resulting mono-[(123)I]iodohypericin monocarboxylic acid was evaluated in normal mice and in rats with ethanol induced liver necrosis. In this model, tracer concentration i...

journal_title：Bioorganic & medicinal chemistry letters

authors： Fonge H,Jin L,Wang H,Ni Y,Bormans G,Verbruggen A

更新日期：2007-07-15 00:00:00

abstract：:N(tau)-Aryl-histidine derivatives were synthesized using a modified one-step Cu-catalyzed coupling of aryl halides and N-acetylhistidine methyl ester. The latter is much less reactive than imidazole toward aryl halides. p-Chloroiodobenzene coupled with iodine displacement only, whereas m- and p-bromoiodobenzene both g...

journal_title：Bioorganic & medicinal chemistry letters

authors： Yue W,Lewis SI,Koen YM,Hanzlik RP

更新日期：2004-04-05 00:00:00

abstract：:A group of tri and tetrasubstituted urea derivatives have been found to be hH(3)-antagonists. The most potent compounds were found in the class of (piperazine-1-yl)-(piperidine-1-yl)-methanones which in addition showed negligible hERG inhibition. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Lau JF,Jeppesen CB,Rimvall K,Hohlweg R

更新日期：2006-10-15 00:00:00

abstract：:Here we report identification of new lead compounds based on quinoline and indenoquinolines with variable side chains as antiprotozoal agents. Quinolines 32, 36 and 37 (Table 1) and indenoquinoline derivatives 14 and 23 (Table 2) inhibit the in vitro growth of the Trypanosoma cruzi, Trypanosoma brucei, Trypanosoma bru...

journal_title：Bioorganic & medicinal chemistry letters

authors： Upadhayaya RS,Dixit SS,Földesi A,Chattopadhyaya J

更新日期：2013-05-01 00:00:00

abstract：:In our efforts to develop CGRP receptor antagonists as backups to MK-3207, 2, we employed a scaffold hopping approach to identify a series of novel oxazolidinone-based compounds. The development of a structurally diverse, potent (20, cAMP+HS IC50=0.67 nM), and selective compound (hERG IC50=19 μM) with favorable rodent...

journal_title：Bioorganic & medicinal chemistry letters

authors： Crowley BM,Stump CA,Nguyen DN,Potteiger CM,McWherter MA,Paone DV,Quigley AG,Bruno JG,Cui D,Culberson JC,Danziger A,Fandozzi C,Gauvreau D,Kemmerer AL,Menzel K,Moore EL,Mosser SD,Reddy V,White RB,Salvatore CA,Kane S

更新日期：2015-11-01 00:00:00

abstract：:The objective of this Letter is to report the first (to our knowledge) in vivo proof of concept for a sulfenamide prodrug to orally deliver a poorly soluble drug containing a weakly-acidic NH-acid from a conventional solid dosage formulation. This proof of concept was established using BMS-708163 (1), a gamma secretas...

journal_title：Bioorganic & medicinal chemistry letters

authors： Guarino VR,Olson RE,Everlof JG,Wang N,McDonald I,Haskell R,Clarke W,Lentz KA

更新日期：2020-02-01 00:00:00

abstract：:A series of tumor-activated prodrugs of the inhibitors of dihydropyrimidine dehydrogenase (DPD), an enzyme catabolizing 5-fluorouracil (5-FU: 4g), has been designed and synthesized. RO0094889 (11c) is a prodrug of 5-vinyluracil (4c), a known DPD inhibitor, and was designed to generate 4c selectively in tumor tissues b...

journal_title：Bioorganic & medicinal chemistry letters

authors： Hattori K,Kohchi Y,Oikawa N,Suda H,Ura M,Ishikawa T,Miwa M,Endoh M,Eda H,Tanimura H,Kawashima A,Horii I,Ishitsuka H,Shimma N

更新日期：2003-03-10 00:00:00

abstract：:Glycogen synthase kinase-3 beta (GSK3β) kinase serves as a promising therapeutic target for the treatment of various human diseases, such as diabetes, obesity, and Alzheimer's disease. In this study, we report lead GSK3β inhibitors identified using a fragment-linking strategy. Through the systematic exploration, a six...

journal_title：Bioorganic & medicinal chemistry letters

authors： Kim J,Moon Y,Hong S

更新日期：2016-12-01 00:00:00

abstract：:Compound 2 was previously identified as a potent inhibitor of factor XIa lacking oral bioavailability. A structure-based approach was used to design analogs of 2 with novel P1 moieties with good selectivity profiles and oral bioavailability. Further optimization of the P1 group led to the identification of a 4-chlorop...

journal_title：Bioorganic & medicinal chemistry letters

authors： Pinto DJ,Smallheer JM,Corte JR,Austin EJ,Wang C,Fang T,Smith LM 2nd,Rossi KA,Rendina AR,Bozarth JM,Zhang G,Wei A,Ramamurthy V,Sheriff S,Myers JE Jr,Morin PE,Luettgen JM,Seiffert DA,Quan ML,Wexler RR

更新日期：2015-04-01 00:00:00

abstract：:A series of novel 5-trans-hydroxyadamantan-2-yl-5,6,7,8-tetrahydropyrazolo[4,3-c]azepin-4(1H)-ones that inhibit 11beta-hydroxysteroid dehydrogenase type 1 are described. We discovered these 7-membered cyclic amide derivatives by introducing a distinctive linker through pharmacophore analysis of known ligands included ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Udagawa S,Sakami S,Takemura T,Sato M,Arai T,Nitta A,Aoki T,Kawai K,Iwamura T,Okazaki S,Takahashi T,Kaino M

更新日期：2013-03-15 00:00:00

abstract：:Ceramides are the major lipid components of the stratum corneum, the major permeability barrier of the skin. Here we report a chemical synthesis of ceramide analogs covalently bonded on the silica particles, that can be used to predict the skin permeability of chemicals via HPLC methods. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Yin J,Liu H,Pidgeon C

更新日期：1998-01-20 00:00:00