Abstract:
:Deltorphin analogues were substituted by a series of achiral C alpha,alpha-dialkyl cyclic alpha-amino acids (1-aminocycloalkane-1-carboxylic acids, Ac chi c, where chi = a hexane, pentane, or propane cycloalkane ring) in position 2, 3, 4, or 2 and 3 in deltorphin C, and in position 2 in [Ac6c2,-des-Phe3]deltorphin C hexapeptide. Receptor assays indicated that even though Ac6c2 and Ac6c3 exhibited a diminished Ki delta by ca. 20-fold (2.5-3.3 nM) relative to deltorphin C (Ki delta = 0.15 nM), selectivity was marginally elevated (Ki mu/Ki delta = 1250) or enhanced by about 70%, and both peptides fitted stringent iterative calculations for a two-site binding model (eta = 0.625 and 0.766, respectively, P < 0.0001). The disubstituted [Ac6c2,3]- or [Ac6c2,des-Phe3]deltorphin analogues yielded peptides with decreased Ki delta, such that the latter peptide was essentially inactive. The presence of Ac5c or Ac3c in place of Phe3 further diminished Ki delta (15.4 to 19.0 nM), yet delta selectivity only fell about one-half (Ki mu/Ki delta = 440 and 535, respectively), and only the former peptide fitted a two-site binding model (eta = 0.799). The replacement of Asp4 by Ac6c, Ac5c, or Ac3c produced essentially nonselective analogues through the acquisition of high mu affinities (2.5, 0.58 and 0.27 nM, respectively) while maintaining high delta affinities (Ki delta = 0.045-0.054 nM) which were about 3-fold greater than that of deltorphin C. Using pharmacological assays in vitro (mouse vas deferens and guinea pig ileum), position 3-substituted analogues all indicated substantial losses in bioactivity, whereas substitution by 1-aminocycloalkanes at the fourth position retained high delta activity. In fact, the bioactivity of [Ac3c4]deltorphin C indicated a peptide with relatively weak delta selectivity, which was comparable to the observations with the receptor binding data. In summary, the data confirmed that (i) delta selectivity occurs in the absence of D-chirality at position 2, (ii) the aromaticity of Phe3 is replaceable by an achiral residue with a hydrophobic ring-saturated side chain, and (iii) the acquisition of dual high-affinity analogues occurs through the elimination of the anionic function at position 4 and replacement by an amino acid with a hydrophobic side chain.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Breveglieri A,Guerrini R,Salvadori S,Bianchi C,Bryant SD,Attila M,Lazarus LHdoi
10.1021/jm950490jsubject
Has Abstractpub_date
1996-02-02 00:00:00pages
773-80issue
3eissn
0022-2623issn
1520-4804pii
jm950490jjournal_volume
39pub_type
杂志文章abstract::A 26-residue peptide BimBH3 binds indiscriminately to multiple oncogenic Bcl2 proteins that regulate apoptosis of cancer cells. Specific inhibition of the BimBH3-Bcl2A1 protein-protein interaction was obtained in vitro and in cancer cells by shortening the peptide to 14 residues, inserting two cyclization constraints ...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.8b00010
更新日期:2018-04-12 00:00:00
abstract::A series of novel 7-[3-(1-piperidinyl)propoxy]chromenones was synthesized and tested as potential antipsychotics in several in vitro and in vivo assays. The compounds possessed good affinity for D2 receptors, together with a greater affinity for 5-HT2 receptors, a profile which has been proposed as a model for atypica...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm9810396
更新日期:1998-12-31 00:00:00
abstract::A unique strategy for the enhancement of secondary binding of an inhibitor to an enzyme has been demonstrated in the design of new human immunodeficiency virus (HIV) protease inhibitors. When the planar benzene ring of a 4-hydroxycoumarin lead compound (1a, Ki = 0.800 microM) was replaced with medium-sized (i.e., 7-9)...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00011a008
更新日期:1995-05-26 00:00:00
abstract::HCV infection is considered a silent epidemic because most people infected do not develop acute symptoms. Instead, the disease progresses to a chronic state leading to cirrhosis and hepatocarcinoma. Novel therapies are needed to combat this major health threat. The HCV NS3 serine protease has been the target of contin...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm801201u
更新日期:2009-02-12 00:00:00
abstract::A series of 6-beta-thiosaccharide analogues of morphine-6-glucuronide (M6G) and codeine-6-glucuronide (C6G) were synthesized and evaluated with the objective of preparing an analogue of M6G with improved biological activity. The affinity of the thiosaccharide analogues of M6G and C6G was examined by competitive bindin...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm049554t
更新日期:2004-11-04 00:00:00
abstract::A molecular model of the alpha(IIb)beta(3) integrin has been developed utilizing (i). the crystal structure of alpha(v)beta(3), (ii). homology model of the alpha(IIb) subdomain, and (iii). the docking of alpha(IIb)beta(3)/alpha(v)beta(3) dual and selective inhibitors into the putative binding sites of alpha(IIb)beta(3...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm030146j
更新日期:2003-12-04 00:00:00
abstract::In this work, a series of water-soluble propofol prodrugs were synthesized, and their propofol release rate and pharmacodynamic characteristics were measured. We found that inserting glycolic acid as a linker between propofol and the cyclic amino acid accelerated the release of propofol from prodrugs into the plasma w...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.0c00698
更新日期:2020-07-23 00:00:00
abstract::Appropriately protected nucleoside 5'-O-(2-thio-1,3,2-dithiaphospholanes) react with inorganic pyrophosphate in the presence of a strong base catalyst (DBU) to give nucleoside 5'-O-(1,1-dithiotriphosphates) 1a-g. The latter compounds, including an AZT analogue, show modest antivirial activity against HIV-1 and HIV-2 r...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00048a021
更新日期:1994-10-28 00:00:00
abstract::The crystal and molecular structure of metyrapone, a powerful inhibitor of certain cytochromes P-450, is described. Cytochrome P-450 enzymes are involved in metabolic processes, including those activating insecticides, drugs, and carcinogens. Metyrapone inhibits both the adrenal cytochrome P-450 catalyzing 11-beta-hyd...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00363a008
更新日期:1983-09-01 00:00:00
abstract::Tyrosine kinases often play pivotal roles in the pathogenesis of cancer and are good candidates for therapeutic intervention and targeted molecular imaging. The precursor synthesis, radiosynthesis, and biological characterization of a fluorine-18 analog of dasatinib, a multitargeted kinase inhibitor, are reported. Com...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm070342g
更新日期:2007-11-15 00:00:00
abstract::A series of novel triazol-3-ones have been synthesized, and their in vitro and in vivo antifungal properties are reported. Compound 68 (itraconazole), which displays a pronounced oral activity against vaginal candidosis in rats and against microsporosis in guinea pigs, has been selected for clinical evaluation. ...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00373a015
更新日期:1984-07-01 00:00:00
abstract::Increased usage of daptomycin to treat infections caused by Gram-positive bacterial pathogens has resulted in emergence of resistant mutants. In a search for more effective daptomycin analogues through medicinal chemistry studies, we found that methylation at the nonproteinogenic amino acid kynurenine in daptomycin co...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.9b01957
更新日期:2020-03-26 00:00:00
abstract::Nalfurafine, a κ-selective opioid receptor agonist, unexpectedly showed a selective antagonist activity toward the orexin 1 receptor (OX1R) (Ki = 250 nM). Modification of the 17-amino side chain of the opioid ligand to an arylsulfonyl group and the 6-furan acrylamide chain to 2-pyridyl acrylamide led to compound 71 wi...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.6b01418
更新日期:2017-02-09 00:00:00
abstract::Inhibition of histone deacetylases (HDACs) leads to growth arrest, differentiation, or apoptosis of tumor cell lines, suggesting HDACs as promising targets for cancer therapy. At present, only one HDAC inhibitor (HDACi) is used in therapy: suberoylanilide hydroxamic acid (SAHA). Here, we describe the synthesis and bio...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm901561u
更新日期:2010-03-11 00:00:00
abstract::Methionine aminopeptidase-2 (MetAP2) is a novel target for cancer therapy. As part of an effort to discover orally active reversible inhibitors of MetAP2, a series of anthranilic acid sulfonamides with micromolar affinities for human MetAP2 were identified using affinity selection by mass spectrometry (ASMS) screening...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm0601001
更新日期:2006-06-29 00:00:00
abstract::A series of 4-methyl-3-(arylthio)furoxans were synthesized by oxidation of 1-(arylthio)-2-methylglyoxymes with dinitrogen tetroxide. Reduction with trimethyl phosphite of the furoxan derivatives afforded the corresponding furazans, while oxidation with an equimolar amount of 30% hydrogen peroxide in acetic acid or wit...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00095a028
更新日期:1992-08-21 00:00:00
abstract::In only four chemical steps from naturally occurring artemisinin (1), trioxane dimers 6 and 7 were prepared on a multigram scale in overall 32-44% yields. In mice, both isonicotinate N-oxide dimer 6 and isobutyric acid dimer 7 were considerably more antimalarially efficacious than clinically used sodium artesunate (2)...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm0303711
更新日期:2004-02-26 00:00:00
abstract::Three phosphapeptides designed to mimic two distinct tetrahedral intermediates formed during either the synthesis or hydrolysis of glutathionylspermidine (Gsp) were synthesized and evaluated as inhibitors of the bifunctional enzyme Gsp synthetase/amidase. While the polyamine-containing phosphapeptides were determined ...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm970414b
更新日期:1997-11-07 00:00:00
abstract::Recently we have described the antitumor activities of 2-benzoxazolylhydrazones derived from 2-formyl and 2-acetylpyridines. In search of a more efficacious analogue, compounds in which the 2-acetylpyridine moiety has been replaced by 2-acylpyridine and alpha-(N)-acetyldiazine/quinoline groups have been synthesized. T...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm060232u
更新日期:2006-10-19 00:00:00
abstract::The dipeptide D-alanyl-D-alanine is an essential precursor of bacterial peptidoglycan; thus, blocking its formation is a possible target for the design of novel antibacterial agents. The synthesis of this dipeptide by bacterial D-alanine:D-alanine ligase requires ATP. In analogy with glutamine synthetase, we hypothesi...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00128a033
更新日期:1989-08-01 00:00:00
abstract::Isosorbide-2-benzyl carbamate-5-benzoate is a highly potent and selective BuChE inhibitor. Meanwhile, isosorbide-2-aspirinate-5-salicylate is a highly effective aspirin prodrug that relies on the salicylate portion to interact productively with human BuChE. By integrating the salicylate group into the carbamate design...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm9014845
更新日期:2010-02-11 00:00:00
abstract::The protoberberine alkaloids berberine (1), palmatine (2), jatrorrhizine (3), and several berberine derivatives (4-10) were tested for antimalarial activity in vitro against Plasmodium falciparum and in vivo against Plasmodium berghei. The berberine derivatives 4-10 were designed and synthesized to maximize structural...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00401a006
更新日期:1988-06-01 00:00:00
abstract::The chemical synthesis and structure-activity relationships of a novel series of 17beta-glucocorticoid butyrolactones possessing either a 16alpha,17alpha-isopropylidene or -butylidene group are described. The sulfur-linked gamma-lactone group was incorporated onto the 17beta-position of the androstane nucleus via Bart...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm001035c
更新日期:2001-02-15 00:00:00
abstract::A series of conjugated hyaluronic acid particles (HAP), composed of a hydrophobic anticancer drug core and hydrophilic cyclodextrin/hyaluronic acid shell, were prepared through self-assembling and characterized by (1)H NMR titration, electron microscopy, zeta potential, and dynamic light-scattering experiments. The na...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm4014168
更新日期:2013-12-12 00:00:00
abstract::A group of compounds, structurally related to metoprolol, in which the aromatic nucleus is formally moved stepwise away from the ethanolamine side chain, has been studied as adrenergic agonists and antagonists. All the compounds were active on the adrenergic receptors and showed similar affinity for the receptor regar...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00136a014
更新日期:1981-04-01 00:00:00
abstract::In this study, we developed an assignment-free approach for rapid identification of ligand-binding sites in target proteins by using NMR. With a sophisticated cell-free stable isotope-labeling procedure that introduces (15)N- or (13)C-labels to specific atoms of target proteins, this approach requires only a single se...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm4014357
更新日期:2013-11-27 00:00:00
abstract::AFTIR (after flowing through immobilized receptor) is a novel method for screening herbal extracts for pharmaceutical properties. Using AFTIR, we identified Cynarin in Echinacea purpurea by its selective binding to chip immobilized CD28, a receptor of T-cells, which is instrumental to immune functioning. The results o...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm0509039
更新日期:2006-03-23 00:00:00
abstract::Orally bioavailable SERDs may offer greater systemic drug exposure, improved clinical efficacy, and more durable treatment outcome for patients with ER-positive endocrine-resistant breast cancer. We report the design and synthesis of a boronic acid modified fulvestrant (5, ZB716), which binds to ERα competitively (IC5...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.6b00753
更新日期:2016-09-08 00:00:00
abstract::The natural dibenzylbutyrolactone type lignanolide (-)-arctigenin (2), an inhibitor of human immunodeficiency virus type-1 (HIV-1) replication in infected human cell systems, was found to suppress the integration of proviral DNA into the cellular DNA genome. In the present study 2 was tested with purified HIV-1 integr...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm950387u
更新日期:1996-01-05 00:00:00
abstract::Thirty-five analogues of Phe-Leu-Glu-Glu-Leu, the pentapeptide sequence 5-9 of bovine prothrombin precursor, were synthesized and assayed as potential substrates or inhibitors of rat liver vitamin K dependent carboxylase. Carboxylation of substrate was determined by measuring the incorporation of carbon-24 labeled bic...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00138a013
更新日期:1981-06-01 00:00:00