Abstract:
:Radiocopper-labeled pyruvaldehyde bis(N4-methylthiosemicarbazonato)copper(II), Cu[PTSM], is under investigation as a radiopharmaceutical for evaluation of regional blood flow in the brain, heart, and kidneys because it affords relatively high levels of radioactivity in these organs upon intravenous injection, followed by prolonged tissue retention of the radiolabel. To probe and differentiate the physicochemical properties that are critical for blood-brain barrier (BBB) penetration and tissue retention in complexes of this type, 17 67Cu-labeled copper(II) bis(thiosemicarbazone) derivatives of Cu[PTSM] have been prepared and characterized, focusing on the bis(thiosemicarbazone), bis(N4-methylthiosemicarbazone), bis(N4-dimethylthiosemicarbazone), and bis(N4-ethylthiosemicarbazone) derivatives of several alkylglyoxals (R(1) = Me, Et, n-Pr, i-Pr, n-Bu, or Me(EtO)CH) and phenylglyoxal. The compounds studied varied in lipophilicity from log P = 0.75 to log P = 3.5 (where P is the octanol/water partition coefficient). In rat biodistribution studies the N4-methylthiosemicarbazone (R(1)TSM) and N4-dimethylthiosemicarbazone (R(1)TSM2) complexes always show comparable cerebral uptake at 1 min postinjection (iv) for any given R(1) group, while the thiosemicarbazone (R(1)TS) complex always penetrates the BBB less efficiently. Comparison of the various Cu[R(1)TS] derivatives shows that their brain uptake does tend to increase with increasing lipophilicity over the range 0.75 less than log P less than 2.4, although it never reaches that of the N4-alkylated derivatives. The Cu[R(1)TS] and Cu[R(1)TSM] complexes are found to exhibit prolonged cerebral retention of activity, consistent with their known susceptibility to reductive decomposition by intracellular sulfhydryl groups, while the more inert Cu[R(1)TSM2] complexes clear from the brain relatively rapidly. Tracer clearance kinetics in the heart and kidney are similar to those observed for the brain with each of the tracers examined.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
John EK,Green MAdoi
10.1021/jm00168a035subject
Has Abstractpub_date
1990-06-01 00:00:00pages
1764-70issue
6eissn
0022-2623issn
1520-4804journal_volume
33pub_type
杂志文章abstract::2-Aminopyridine-3,5-dicarbonitrile compounds were previously identified as mimetics of dominant-negative prion protein mutants and inhibit prion replication in cultured cells. Here, we report findings from a comprehensive structure-activity relationship study of the 6-aminopyridine-3,5-dicarbonitrile scaffold. We iden...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm061045z
更新日期:2007-01-11 00:00:00
abstract::Antibiotic resistance represents a worldwide concern, especially regarding the outbreak of methicillin-resistant Staphylococcus aureus, a common cause for serious skin and soft tissues infections. A major contributor to Staphylococcus aureus antibiotic resistance is the NorA efflux pump, which is able to extrude selec...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.5b01219
更新日期:2016-02-11 00:00:00
abstract::Tacrine and PBT2 (an 8-hydroxyquinoline derivative) are well-known drugs that inhibit cholinesterases and decrease beta-amyloid (Abeta) levels by complexation of redox-active metals, respectively. In this work, novel tacrine-8-hydroxyquinoline hybrids have been designed, synthesized, and evaluated as potential multifu...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm100329q
更新日期:2010-07-08 00:00:00
abstract::A focused library approach identifying novel leads to develop a potent ORL1 antagonist is described. Beginning from a compound identified by random screening, an exploratory library that exhibited a diverse display of pharmacophores was designed. After evaluating ORL1 antagonistic activity, a highly focused library wa...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm0509851
更新日期:2006-02-09 00:00:00
abstract::Although recognized in small molecules for quite some time, the implications of halogen bonding in biomolecular systems are only now coming to light. In this study, several systems of proteins in complex with halogenated ligands have been investigated by using a two-layer QM/MM ONIOM methodology. In all cases, the hal...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm9000133
更新日期:2009-05-14 00:00:00
abstract::Electron deficient, bivalent sulfur atoms have two areas of positive electrostatic potential, a consequence of the low-lying σ* orbitals of the C-S bond that are available for interaction with electron donors including oxygen and nitrogen atoms and, possibly, π-systems. Intramolecular interactions are by far the most ...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm501853m
更新日期:2015-06-11 00:00:00
abstract::A series of 1-imidazolyl(alkyl)-substituted quinoline, isoquinoline, naphthalene, benzo[b]furan, and benzo[b]thiophene derivatives was synthesized as dual inhibitors of thromboxane A(2) synthase (P450 TxA(2)) and aromatase (P450 arom). Dual inhibition of these enzymes could be a novel strategy for the treatment of mam...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm991180u
更新日期:2000-05-04 00:00:00
abstract::125I-labeled (E)-18-iodo-17-octadecenoic acid (13) has been prepared and evaluated in rats to determine the myocardial uptake and retention and degree of in vivo deiodination of this model iodovinyl-substituted fatty acid, which contains no structural perturbation to inhibit metabolism. This new agent was prepared by ...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00367a021
更新日期:1984-01-01 00:00:00
abstract::The synthesis and biological evaluation of a series of 2-substituted 5-phenyl-1,4-benzodiazepines, structurally related to tifluadom (5), the only benzodiazepine that acts simultaneously as a kappa-opioid agonist and a cholecystokinin-A (CCK-A) antagonist, are reported. The radioligand binding models used in these stu...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm950423p
更新日期:1996-02-16 00:00:00
abstract::Despite the availability of large amounts of data for HIV-protease inhibitors and their effectiveness with wild type and resistant enzyme, there is limited knowledge about how this and other information can be systematically applied to the development of new antiviral compounds. To identify in vitro parameters that co...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm0499110
更新日期:2004-11-18 00:00:00
abstract::For establishment of the structure-activity relationship, 19 heterobicycle-coumarin conjugated compounds with the -SCH(2)- linker were synthesized and found to possess significant antiviral activities. Prominent examples included imidazopyridine-coumarin 12c, purine-coumarin 12d, and benzoxazole-coumarin 14c, which in...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm801240d
更新日期:2009-03-12 00:00:00
abstract::Certain spiders contain large pools of polyamine toxins, which are putative pharmacological tools awaiting further discovery. Here we present a general synthesis strategy for this class of toxins and prepare five structurally varied polyamine toxins. Electrophysiological testing at three ionotropic glutamate receptor ...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm301255m
更新日期:2012-11-26 00:00:00
abstract::The identification of a series of imidazo[1,2-b][1,2,4]triazines with high affinity and functional selectivity for the GABA(A) alpha3-containing receptor subtype is described, leading to the identification of a clinical candidate, 11. Compound 11 shows good bioavailability and half-life in preclinical species, and it ...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm051200u
更新日期:2006-02-23 00:00:00
abstract::A series of new 5-(1-hydroxy-2-haloethyl)-2'-deoxyuridines (3, 6, 8) were synthesized in 60-70% yields by addition of HOX (X = Br, Cl, I) to the vinyl substituent of the respective 5-vinyl-2'-deoxyuridines (2, 5, 7). Treatment of 3a,b with methanolic sulfuric acid afforded the corresponding 5-(1-methoxy-2-haloethyl)-2...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00125a003
更新日期:1989-05-01 00:00:00
abstract::A new family of chelating agents based on 4-(substituted-carbamoyl)-3-hydroxy-2-pyridinones is reported. These have optional terminal substituents on the nitrogens, and the hydroxypyridonate (HOPO) rings are attached to molecular backbones through amide linkages. A very important feature of the methyl-substituted liga...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00014a013
更新日期:1995-07-07 00:00:00
abstract::We have synthesized several 7alpha-fluoro (F) and 7alpha-iodo (I) analogues of 5alpha-dihydrotestosterone (5alpha-DHT) and 19-nor-5alpha-dihydrotestosterone (5alpha-NDHT) and tested them for binding to the androgen receptor and for their biological activity in an in vitro assay with cells that have been engineered to ...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm990064o
更新日期:1999-06-03 00:00:00
abstract::Toward developing new potential analgesics, this first structure-activity relationship study of opiorphin (H-Gln-Arg-Phe-Ser-Arg-OH), a human peptide inhibiting enkephalin degradation, was performed. A systematic Ala scanning proved that Phe(3) is a key residue for neprilysin and aminopeptidase N (AP-N) ectoenkephalin...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm2012112
更新日期:2012-02-09 00:00:00
abstract::A series of novel tetrahydropyridinecarboxamide TRPV1 antagonists were prepared and evaluated in an effort to optimize properties of previously described lead compounds from piperazinecarboxamide series. The compounds were evaluated for their ability to block capsaicin and acid-induced calcium influx in CHO cells expr...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm500818a
更新日期:2014-08-14 00:00:00
abstract::Mutant epidermal growth factor receptor (EGFR) is a major driver of non-small-cell lung cancer (NSCLC). Marketed first generation inhibitors, such as erlotinib, effect a transient beneficial response in EGFR mutant NSCLC patients before resistance mechanisms render these inhibitors ineffective. Secondary oncogenic EGF...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.6b01894
更新日期:2017-04-13 00:00:00
abstract::Analogues of cyclic ADP-ribose (cADPR) incorporating a methylenebisphosphonate linkage in the place of the pyrophosphate have been synthesized from nicotinamide adenine dinucleotide analogues enzymatically using Aplysia californica ADP-ribosyl cyclase. Methylenebisphosphonate cyclic ADP-ribose (cADPR[CH(2)]) and methy...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm049469l
更新日期:2005-06-16 00:00:00
abstract::Since the Z isomer of chlorprothixene (1) is far more active than its E counterpart, it was of interest to develop a stereoselective synthesis for this class of compounds. Insertion of a benzenesulfonamido group at the peri position of a chlorprothixene precursor did affect the stereochemistry of side-chain olefin for...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00145a005
更新日期:1985-07-01 00:00:00
abstract::All of the selective COX-2 inhibitors described to date inhibit the isoform by binding tightly but noncovalently at the substrate binding site. Recently, we reported the first account of selective covalent modification of COX-2 by a novel inactivator, 2-acetoxyphenyl hept-2-ynyl sulfide (70) (Science 1998, 280, 1268-1...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm980303s
更新日期:1998-11-19 00:00:00
abstract::Analogues of the previously reported potent cytotoxic spiro[(dihydropyrazine-2,5-dione)-6,3'-(2',3'-dihydrothieno[2,3-b]naphtho-4',9'-dione)] derivatives (3, 3') were prepared to explore new structural requirements at the diketopiperazine domain for the cytotoxic activity. The in vitro activity was evaluated against t...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm7013056
更新日期:2008-05-22 00:00:00
abstract::HDM2 binds to an alpha-helical transactivation domain of p53, inhibiting its tumor suppressive functions. A miniaturized thermal denaturation assay was used to screen chemical libraries, resulting in the discovery of a novel series of benzodiazepinedione antagonists of the HDM2-p53 interaction. The X-ray crystal struc...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm049137g
更新日期:2005-02-24 00:00:00
abstract::Alkyne 40, 5-(2-amino-4-chloro-7-((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)-7H-pyrrolo[2,3-d]pyrimidin-5-yl)-2-methylpent-4-yn-2-ol (EC144), is a second generation inhibitor of heat shock protein 90 (Hsp90) and is substantially more potent in vitro and in vivo than the first generation inhibitor 14 (BIIB021) that co...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm300810x
更新日期:2012-09-13 00:00:00
abstract::The EP(3) receptor on the platelet mediates prostaglandin E(2) potentiation of thrombogenic coagonists including collagen and adenosine diphosphate (ADP). A pharmacophore driven approach led to the identification of diverse peri-substituted heterocycles as potent and selective EP(3) receptor antagonists. A simultaneou...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm9005912
更新日期:2010-01-14 00:00:00
abstract::The synthesis of substituted [[3(S)-(acylamino)-2-oxo-1-azetidinyl]oxy]acetic acids (1) is described. 3-[(Carbobenzyloxy)amino]-N-hydroxy-2-azetidinones (13a,b), prepared from serine and threonine, were alkylated with 2-(trimethylsilyl)ethyl bromoacetate in the presence of potassium carbonate in THF/H2O. Alkylation wi...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00148a013
更新日期:1985-10-01 00:00:00
abstract::We recently discovered the isoform selective RAR beta 2 ligand 4'-octyl-4-biphenylcarboxylic acid (3, AC-55649). Although 3 is highly potent at RAR beta 2 and displays excellent selectivity, solubility issues make it unsuitable for drug development. Herein we describe the exploration of the SAR in a biphenyl and a phe...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm801532e
更新日期:2009-03-26 00:00:00
abstract::To enhance the ability of indirubin derivatives to inhibit CDK2/cyclin E, a target of anticancer agents, we designed and synthesized a new series of indirubin-3'-oxime derivatives with combined substitutions at the 5 and 5' positions. A molecular docking study predicted the binding of derivatives with OH or halogen su...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm100080z
更新日期:2010-05-13 00:00:00
abstract::Novel tumor-targeting theranostic conjugates 1 and 2, bearing either a fluorine-labeled prosthetic as a potential (18)F-PET radiotracer (1) or a fluorescence probe (2) for internalization studies in vitro, were designed and synthesized. We confirmed efficient internalization of 2 in biotin-receptor positive (BR+) canc...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm5019115
更新日期:2015-03-12 00:00:00