abstract：:Monte Carlo statistical mechanics simulations have been carried out for 150 organic solutes in water. Physically significant descriptors such as the solvent-accessible surface area, numbers of hydrogen bonds, and indices for cohesive interactions in solids are correlated with pharmacologically important properties inc...

journal_title：Bioorganic & medicinal chemistry letters

authors： Jorgensen WL,Duffy EM

更新日期：2000-06-05 00:00:00

abstract：:Novel benzo[b]thiophene diamine thrombin inhibitors were investigated, focusing on a contracted C4'-side chain series. SAR studies identified compounds with either a pyrrolidino or morpholino group as potent, active site directed thrombin inhibitors when the amino group was connected to the C3-phenyl ring with a methy...

journal_title：Bioorganic & medicinal chemistry letters

authors： Takeuchi K,Kohn TJ,Harper RW,Lin HS,Gifford-Moore DS,Richett ME,Sall DJ,Smith GF,Zhang M

更新日期：2000-06-05 00:00:00

abstract：:A new synthesis of (R,S)-PPG (4-phosphonophenylglycine) and the separation of the protected enantiomers leading after deprotection to (+)- and (-)-PPG are described. Pharmacological characterization at the group III metabotropic glutamate receptors hmGluR4a and hmGluR7b revealed (+)-PPG as the active enantiomer. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Gasparini F,Inderbitzin W,Francotte E,Lecis G,Richert P,Dragic Z,Kuhn R,Flor PJ

更新日期：2000-06-05 00:00:00

abstract：:The tropane derived compounds, 4-[(8-alkyl-8-azabicyclo[3.2.1]octyl-3-yl)-3-arylanilino]-N,N-d iethylbenzamides (5a-d), were synthesized and found to have high affinity and selectivity for the delta receptor. Compounds 5a-d are structurally similar to the full agonist (-)-RTI-5989-54 (3); yet, efficacy studies for com...

journal_title：Bioorganic & medicinal chemistry letters

authors： Thomas JB,Atkinson RN,Rothman RB,Burgess JP,Mascarella SW,Dersch CM,Xu H,Carroll FI

更新日期：2000-06-05 00:00:00

abstract：:A focused library (4 x 14) prepared from 4-aminopyridine and 4-, 5-, and 6-azoindole templates was synthesized using 14 polymer supported 4-amido-2,3,5,6-tetrafluorophenyl (TFP) sulfonate esters inputs. Several compounds were identified as factor Xa inhibitors (IC50< or =0.1 microM) helping to establish the SAR among ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Gong Y,Becker M,Choi-Sledeski YM,Davis RS,Salvino JM,Chu V,Brown KD,Pauls HW

更新日期：2000-05-15 00:00:00

abstract：:5'-Dipeptidyl derivatives of 5-fluorodeoxyuridine (FdU) (1a-d) were synthesized. These compounds are biologically inactive but can be activated by peptide deformylase, which removes the N-terminal formyl group of the dipeptide, to release the active drug FdU via an intramolecular cyclization reaction. Because the defo...

journal_title：Bioorganic & medicinal chemistry letters

authors： Wei Y,Pei D

更新日期：2000-05-15 00:00:00

abstract：:Analogues of the benzazepine dopamine D1 receptor antagonist SCH-23390 incorporating the cyclo-pentadienyltricarbonyl-rhenium (CPTR) moiety were synthesized and evaluated pharmacologically. The CPTR derivatives retained affinity (0.3-2.9 nM) and D1 selectivity of the parent compound, supporting their use as neuropharm...

journal_title：Bioorganic & medicinal chemistry letters

authors： Tamagnan G,Baldwin RM,Kula NS,Baldessarini RJ,Innis RB

更新日期：2000-05-15 00:00:00

abstract：:Phenylpiperazine derivatives were synthesized as dual cytokine regulators with TNF-alpha suppressing and IL-10 augmenting activity. Lead optimization led to compound 5k having the potent regulatory activity and demonstrating remarkable protective effects against the lethal challenge of LPS in mice. suggesting that 5k ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Hanano T,Adachi K,Aoki Y,Morimoto H,Naka Y,Hisadome M,Fukuda T,Sumichika H

更新日期：2000-05-01 00:00:00

abstract：:A series of pyrrolo[3,2,1-ij]quinoline derivatives was synthesized, evaluated for their activity against the 5-HT2c and 5-HT2a, receptors and found to be agonists at 5-HT2c with selectivity over 5-HT2a. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Isaac M,Slassi A,O'Brien A,Edwards L,MacLean N,Bueschkens D,Lee DK,McCallum K,De Lannoy I,Demchyshyn L,Kamboj R

更新日期：2000-05-01 00:00:00

abstract：:The screening for new inhibitors of steroid sulfatase requires an efficient test system. To overcome the shortcomings of the available discontinuous fluorimetric assay, several coumarin-type compounds were investigated as potential new substrates. 3,4-Benzocoumarin 7-O-sulfate was found to have appropriate substrate p...

journal_title：Bioorganic & medicinal chemistry letters

authors： Bilban M,Billich A,Auer M,Nussbaumer P

更新日期：2000-05-01 00:00:00

abstract：:Peptide-based alpha-ketoamides, alpha-ketoesters and alpha-diketones were designed, synthesized and evaluated against HCV NS3 protease. Alpha-ketoamides have the highest affinity among the three classes, with 8 being the most potent inhibitor with an IC50 of 340 nM. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Han W,Hu Z,Jiang X,Decicco CP

更新日期：2000-04-17 00:00:00

abstract：:Macrocarpins A (1), B (2), C (3) and D (4), four new nor-triterpenes, have been isolated from the roots of Maytenus macrocarpa. The structures were established by spectroscopic examinations. Natural compounds 1, 2, 4 and the acetyl derivative 1a are cytotoxic against four tumoral cell lines with IC50 values ranging be...

journal_title：Bioorganic & medicinal chemistry letters

authors： Chávez H,Rodríguez G,Estévez-Braun A,Ravelo AG,Estévez-Reyes R,González AG,Fdez-Puente JL,García-Grávalos D

更新日期：2000-04-17 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：:A series of yohimbine dimers was prepared and evaluated at the human alpha2a- and alpha2b-adrenergic receptors (ARs) expressed in Chinese hamster ovary (CHO) cells. All dimers display higher binding selectivities for alpha2a versus alpha2b subtype than yohimbine, and four compounds (3d, 3e, 3g and 3i) represent the mo...

journal_title：Bioorganic & medicinal chemistry letters

authors： Zheng W,Lei L,Lalchandani S,Sun G,Feller DR,Miller DD

更新日期：2000-04-03 00:00:00

abstract：:Phosphopeptide prodrugs bearing two S-acyl-2-thioethyl (SATE) biolabile phosphate protections were developed. They are capable to inhibit the Shc/Grb2 interaction and MAP kinases (ERK1 and ERK2) phosphorylation in cellular assay. The S-acetyl-2-thioethyl (MeSATE) analogue showed an IC50 of 1 microM in the inhibition o...

journal_title：Bioorganic & medicinal chemistry letters

authors： Liu WQ,Vidal M,Mathé C,Périgaud C,Garbay C

更新日期：2000-04-03 00:00:00

abstract：:A series of cysteine diazomethyl- and chloromethyl ketone derivatives has been synthesized and evaluated against human B-lineage (Nalm-6) and T-lineage (Molt-3) acute lymphoblastic leukemia cell lines. The chloromethyl ketone compounds showed potent cytotoxicity against these cell lines, with IC50 values in the low mi...

journal_title：Bioorganic & medicinal chemistry letters

authors： Perrey DA,Narla RK,Uckun FM

更新日期：2000-03-20 00:00:00

abstract：:A novel series of readily water soluble 8-methylureido-4,5-dihydro-4-oxo-10H-imidazo[1,2-a]indeno[1,2-e]++ +pyrazines were synthesized. The -10-yl acetic acid ((+)-3) and -10-carboxylidene (4) derivatives exhibit potent affinities (IC50=4 and 19 nM, respectively) and antagonist properties (IC50 = 2 and 3 nM, respectiv...

journal_title：Bioorganic & medicinal chemistry letters

authors： Mignani S,Bohme GA,Boireau A,Cheve M,Damour D,Debono MW,Genevois-Borella A,Imperato A,Jimonet P,Pratt J,Randle JC,Ribeill Y,Vuilhorgne M,Stutzmann JM

更新日期：2000-03-20 00:00:00

abstract：:We have succeeded in the acquisition of DNA aptamers that recognize chitin using in vitro selection. The obtained DNA aptamers have the stem-loop or bulge loop structures with guanine rich loop clusters and the clockwise B-form stems. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Fukusaki E,Kato T,Maeda H,Kawazoe N,Ito Y,Okazawa A,Kajiyama S,Kobayashi A

更新日期：2000-03-06 00:00:00

abstract：:A unique bicyclic peptide, moroidin (1), from the seeds of Celosia argentea (Amaranthaceae) strongly inhibited the polymerization of tubulin. The stereostructure of moroidin (1) was reinvestigated by spectroscopic data, chemical degradation, and molecular dynamics simulation. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Morita H,Shimbo K,Shigemori H,Kobayashi J

更新日期：2000-03-06 00:00:00

abstract：:The synthesis of a series of new antitumour agents, the benzothiazole substituted quinol ethers and esters, is reported via the hypervalent iodine mediated oxidation of hydroxylated 2-phenylbenzothiazoles. The products were found to be active in vitro against human colon and breast cancer cell lines with IC50 values i...

journal_title：Bioorganic & medicinal chemistry letters

authors： Wells G,Bradshaw TD,Diana P,Seaton A,Shi DF,Westwell AD,Stevens MF

更新日期：2000-03-06 00:00:00

abstract：:The synthesis and antihypertensive activity of racemates and enantiomers of substituted 2,3,8,8a-tetrahydro-7H-oxazolo[3,2-a]pyridinedicarboxylates have been reported. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Martín E,Morán A,Martín ML,San Román L,Puebla P,Medarde M,Caballero E,San Feliciano A

更新日期：2000-02-21 00:00:00

abstract：:A vitamin D analogue containing an affinity and a photoaffinity probe (affinity-driven cross-linker, Double Label) was synthesized. An unknown factor, associated with vitamin D receptor (VDR), was isolated from rat liver nuclear extract using a GST-VDR-ligand-binding domain fusion protein (GST-VDR-LBD), affinity label...

journal_title：Bioorganic & medicinal chemistry letters

authors： Swamy N,Addo JK,Ray R

更新日期：2000-02-21 00:00:00

abstract：:A series of N6,2-disubstituted adenosine analogues have been synthesized and their functional activity measured against A2a and A1 receptors. Examples of compounds with both a lipophilic N6-substituent and amino-functionalized 2-position were highly active at the A2a receptor on the human neutrophil. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Keeling SE,Albinson FD,Ayres BE,Butchers PR,Chambers CL,Cherry PC,Ellis F,Ewan GB,Gregson M,Knight J,Mills K,Ravenscroft P,Reynolds LH,Sanjar S,Sheehan MJ

更新日期：2000-02-21 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：:Bioisosteric substitution of the thiourea (3, 5, 7, 9) and urea (10) moiety of PETT compounds with sulfamide (1), cyanoguanidine (2, 4) and guanidine (6, 8) functionalities, and replacement of the phenethyl group with benzoylethyl group (compounds 11-20) have been studied. Synthesis and antiviral activities are descri...

journal_title：Bioorganic & medicinal chemistry letters

authors： Högberg M,Engelhardt P,Vrang L,Zhang H

更新日期：2000-02-07 00:00:00

abstract：:The synthesis of 1- and 2-substituted aza-benzothiopyranoindazoles has been accomplished. The comparisons of the in vitro antitumor activities of the 2-substituted analogues with the benzothiopyranoindazole chemotypes indicate that the positioning of the nitrogen atom at C-9 (9-aza analogue 4d) leads to a substrate wi...

journal_title：Bioorganic & medicinal chemistry letters

authors： Krapcho AP,Haydar SN,Truong-Chiott S,Hacker MP,Menta E,Beggiolin G

更新日期：2000-02-07 00:00:00

abstract：:Incubation of epicubenol synthase with farnesyl pyrophosphate in the presence of 11.1 atom% H2(18)O gave epicubenol (2) in which the hydroxyl oxygen atom was shown to be derived exclusively from water, as established by GC-selected ion monitoring MS of the derived TMS-epicubenol derivative (15). ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Cane DE,Ke N

更新日期：2000-01-17 00:00:00

abstract：:The reductive amination of an amino acid derived glyoxal, with the free amino group of a protected amino acid or oligopeptide fragment, has been developed as a simple and efficient method for the preparation of ketomethylene amino pseudo-oligopeptide isosteres Aa psi(COCH2NH)Aa. Trichlorosilane-DMF is the reagent of c...

journal_title：Bioorganic & medicinal chemistry letters

authors： Groarke M,Hartzoulakis B,McKervey MA,Walker B,Williams CH

更新日期：2000-01-17 00:00:00

abstract：:Quinazolinone derivatives were synthesized and evaluated as non-peptidic growth hormone secretagogues. Modeling guided design of quinazolinone compound 21 led to a potency enhancement of greater than 200-fold compared to human growth hormone secretagogue affinity of a screening lead 4. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Ye Z,Gao Y,Bakshi RK,Chen MH,Rohrer SP,Feighner SD,Pong SS,Howard AD,Blake A,Birzin ET,Locco L,Parmar RM,Chan WW,Schaeffer JM,Smith RG,Patchett AA,Nargund RP

更新日期：2000-01-03 00:00:00

abstract：:Tripeptide-derived molecules incorporating C-terminal ketone electrophiles were evaluated as reversible inhibitors of the cysteine-containing human rhinovirus 3C protease (3CP). An optimized example of such compounds displayed potent 3CP inhibition activity (K = 0.0045 microM) and in vitro antiviral properties (EC50=0...

journal_title：Bioorganic & medicinal chemistry letters

authors： Dragovich PS,Zhou R,Webber SE,Prins TJ,Kwok AK,Okano K,Fuhrman SA,Zalman LS,Maldonado FC,Brown EL,Meador JW 3rd,Patick AK,Ford CE,Brothers MA,Binford SL,Matthews DA,Ferre RA,Worland ST

更新日期：2000-01-03 00:00:00

abstract：:We expand the structural requirements and structure-activity relationship of a novel class of non-peptidic aryl-based thrombin inhibitors through exploration of the S1 specificity pocket of thrombin using flexible and constrained amidines. The most active compound of this class is 11 with Ki = 69 nM, which is ca. 15-f...

journal_title：Bioorganic & medicinal chemistry letters

authors： Lu T,Tomczuk B,Bone R,Murphy L,Salemme FR,Soll RM

更新日期：2000-01-03 00:00:00

abstract：:Regio- and/or chemo-selective reductions of taxinine (1a), a taxane diterpenoid readily obtainable from the needles of a Japanese yew (Taxus cuspidata), at the 5-O-cinnamoyl and 4-exo-methylene moieties have been accomplished by the catalytic hydrogenation over Pd/C or Rh/C to obtain 5-O-phenylpropionylated taxinine A...

journal_title：Bioorganic & medicinal chemistry letters

authors： Sako M,Suzuki H,Yamamoto N,Hirota K

更新日期：1999-12-20 00:00:00

abstract：:Phosphorothioate oligodeoxynucleotides containing CpG motifs have immunostimulatory activity. Appropriate substitution of deoxynucleosides in the flanking region of CpG-containing phosphorothioate oligodeoxynucleotides with 2'-O-methylribonucleosides results in significant decreases or increases in their immunostimula...

journal_title：Bioorganic & medicinal chemistry letters

authors： Zhao Q,Yu D,Agrawal S

更新日期：1999-12-20 00:00:00

abstract：:In the course of a study of 6-N-amino-substituted analogues of NB-506 (1), a more potent anticancer drug, J-109,404 (2), in which the formyl group of NB-506 was replaced with a 1,3-dihydroxypropane group, was reported. A study of further modification in the positions of two hydroxyl groups at the indole rings of 2 res...

journal_title：Bioorganic & medicinal chemistry letters

authors： Ohkubo M,Nishimura T,Honma T,Nishimura I,Ito S,Yoshinari T,Suda HA,Morishima H,Nishimura S

更新日期：1999-12-06 00:00:00

abstract：:Fatty acylated dipeptides homologous to Gi alpha N-termini affect ligand binding to muscarinic acetylcholine receptors. Myristylglycine-serine containing dipeptides decrease antagonist binding at both M1 and M2 muscarinic receptors. Palmitate on the serine analogous to native palmitoylated cysteine affords dipeptide w...

journal_title：Bioorganic & medicinal chemistry letters

authors： Krishnan V,Pham WN,Messer WS Jr,Peseckis SM

更新日期：1999-12-06 00:00:00

abstract：:Two new technetium complexes containing a piperidine template have been synthesized and evaluated as possible leads for the development of dopamine transporter (DAT) imaging agents. Binding data for the corresponding rhenium complexes containing either a monoaminomonoamide (MAMA') or a diaminodithiol (DADT) chelating ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Hoepping A,Babich J,Zubieta JA,Johnson KM,Machill S,Kozikowski AP

更新日期：1999-11-15 00:00:00

abstract：:The chemical resolution, using N-tosyl-L-proline as a chiral auxiliary, of a racemate of the pyrazole analog (+/-)-N-Boc-CPzI of the left hand segment (CPI) of the antitumor agent CC-1065, and the cytotoxic evaluation of both enantiomers are described. The reported results further validate the direct relationship betw...

journal_title：Bioorganic & medicinal chemistry letters

authors： Baraldi PG,Cacciari B,Romagnoli R,Spalluto G,Boyce CW,Boger DL

更新日期：1999-11-01 00:00:00

abstract：:Aryl hydroxylamine derivatives have been synthesised that are some of the most potent inhibitors of hCMV protease prepared to date (IC50 14-60 nM). Mass spectrometry studies indicate that oxazinone derived hydroxylamines inhibit the enzyme by acylation of Ser132 whereas non-oxazinone derived hydroxylamines appear to i...

journal_title：Bioorganic & medicinal chemistry letters

authors： Smith DG,Gribble AD,Haigh D,Ife RJ,Lavery P,Skett P,Slingsby BP,Stacey R,Ward RW,West A

更新日期：1999-11-01 00:00:00

abstract：:A series of orthoalkylaminophenol derivatives was synthesized and tested in vitro with respect to their neuroprotective effect. Some of these compounds exhibited a potent antioxidant activity close to that of standard alpha-tocopherol. ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Larget R,Lockhart B,Pfeiffer B,Neudorffer A,Fleury MB,Largeron M

更新日期：1999-10-18 00:00:00

abstract：:During the course of our investigations in the field of azole antimicrobial agents, we have identified BM212 a pyrrole derivative with good in vitro activity against mycobacteria and candidae. These findings prompted us to prepare new pyrrole derivatives 2-6 in the hope of increasing the activity. The microbiological ...

journal_title：Bioorganic & medicinal chemistry letters

authors： Biava M,Fioravanti R,Porretta GC,Deidda D,Maullu C,Pompei R

更新日期：1999-10-18 00:00:00