Abstract:
:A series of analogues of the recently reported angiotensin II (AII) antagonist [Sar1]AII-(1-7)-amide or des-Phe8[Sar1]AII (3) have been prepared by solid-phase synthesis and purified by reverse-phase liquid chromatography. The agonist and antagonist properties of these carboxy-truncated analogues of AII were determined in the isolated rabbit aorta assay. In the analogues tested, replacement of aspartic acid in position 1 by sarcosine was found necessary to produce significant antagonist activity. At position 7 of the des-Phe8 analogues, prolinamide could be replaced by proline without significant change in the biological activity. However, substitution of 7-prolinamide by either glycinamide or sarcosinamide provided inactive peptides. Methylation of the 4-tyrosine in [Sar1]AII-(1-7)-NH2 preserved the antagonist potency in isolated rabbit aorta. Deletion of the proline at position 7 resulted in inactive hexapeptides, both in the Asp1 and Sar1 series. However synthesis of the N,N-dimethyl amide at the N-terminus afforded hexapeptide [Sar1]AII-(1-6)-N(CH3)2 (10) with a pA2 value of 7.05. All the antagonistic peptides synthesized were fully reversible, competitive antagonists in vitro. These findings indicate that the structural requirements for receptor blockade by these C-truncated analogues are quite stringent with respect to the nature of the amino acid at positions 1 and 6/7. The analogues 2, 3, 7, 10, 11 (saralasin), and 12 (sarmesin) were tested in vivo in the anesthetized rat and were found to inhibit the AII pressor response. In addition, 3 inhibited angiotensin II stimulated aldosterone release from isolated rat adrenal zona glomerulosa cells and had no agonist activity by itself at the doses tested. Interestingly, analogue 3, when injected intracerebroventricularly in conscious rats, failed to antagonize the dipsogenic response to an angiotensin II icv injection and this reflects some heterogeneity in the AII receptor population. Peptide 3 is the first example of an antagonist that discriminates between peripheral and brain receptor subtypes.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Bovy PR,O'Neal JM,Olins GM,Patton DR,McMahon EG,Palomo M,Koepke JP,Salles KS,Trapani AJ,Smits GJdoi
10.1021/jm00167a030subject
Has Abstract,Author List Incompletepub_date
1990-05-01 00:00:00pages
1477-82issue
5eissn
0022-2623issn
1520-4804journal_volume
33pub_type
杂志文章abstract::Dimethylallylguanidine, also known as galegine, isolated from Galega officinalis, has been shown to have weight reducing properties in vivo. Substitution of the guanidine group with an N-cyano group and replacement of guanidine with amidine, pyrimidine, pyridine, or the imidazole moieties removed the weight reducing p...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm8011933
更新日期:2009-06-11 00:00:00
abstract::A series of 5-substituted tetrahydroisoquinolines was synthesized via a 10-step linear synthesis to assess whether replacement of noscapine's southern isobenzofuranone with other moieties resulted in retained cytotoxic activity. One such molecule, 18g, bearing a para-methoxybenzyl functionality with N-ethylcarbamoyl s...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.8b00986
更新日期:2018-09-27 00:00:00
abstract::The synthesis is described of a series of derivatives of 1-phenoxy-3-phenoxyalkylamino-2-propanols and 1-alkoxyalkylamino-3-phenoxy-2-propranols. The compounds were investigated for their beta-adrenoceptor blocking properties and many showed a surprising degree of cardioselectivity when tested in vivo in anesthetized ...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00222a022
更新日期:1977-12-01 00:00:00
abstract::A series of disubstituted ureas containing amide or amine groups was prepared and evaluated for their ability to inhibit acyl-CoA:cholesterol O-acyl transferase in vitro and to lower plasma total cholesterol in a variety of cholesterol-fed rat models in vivo. The presence of polar or ionizable functionalities within t...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00038a010
更新日期:1994-06-10 00:00:00
abstract::Structure dependent efficacy studies in the field of selective D4 ligands led to the 2-aminomethyl substituted azaindole 2 (FAUC 213) that displayed strong D4 binding, high subtype selectivity, and complete antagonist properties in ligand-induced mitogenesis experiments. According to our schematic molecular model, the...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm015522j
更新日期:2001-08-16 00:00:00
abstract::Novel flavagline analogues were synthesized and examined with respect to their cytotoxicity. Structural features critical to the potential of this class of anticancer natural products were unraveled. We demonstrated, in particular, that the introduction of substituants at C-2 has a deleterious effect on multidrug resi...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm101318b
更新日期:2011-01-13 00:00:00
abstract::Our prior studies showed that polyhydroxylated styrylquinolines are potent HIV-1 integrase (IN) inhibitors that block the replication of HIV-1 in cell culture at nontoxic concentrations. To explore the mechanism of action of these inhibitors, various novel styrylquinoline derivatives were synthesized and tested agains...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm990467o
更新日期:2000-04-20 00:00:00
abstract::Three novel, N-acyl-pro-pyrrolidine-type, inhibitors of prolyl oligopeptidase (POP) with nanomolar activities were synthesized and their binding analyzed to the host enzyme in the light of X-ray diffraction and molecular modeling studies. We were interested in the alteration in the binding affinity at the S3 site as a...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm800944x
更新日期:2008-12-11 00:00:00
abstract::Classical potential energy calculations are reported for a series of 11 structurally diverse substrates, products, and inhibitors of dihydrofolate reductase. In almost every case, the calculations reveal a range of potential biologically active conformations accessible to the molecule, and geometry optimization with m...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00155a020
更新日期:1986-05-01 00:00:00
abstract::Replacement of the catecholic hydroxyl groups of the beta-adrenergic receptor agonist 6,7-dihydroxy-1-(3,4,5-trimethoxybenzyl)-1,2,3,4-tetrahydroisoquinoline (trimetoquinol) with chloro substituents results in a compound with marked beta-adrenoceptor antagonist properties. This, therefore, parallels the similar transf...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00161a039
更新日期:1986-11-01 00:00:00
abstract::Inhibitors of the PI3-kinase/AKT (protein kinase B) pathway are under investigation as anticancer and antiviral agents. The benzimidazole derivative AKT inhibitor-IV (ChemBridge 5233705) affects this pathway and exhibits potent anticancer and antiviral activity. To probe its biological activity, we synthesized AKT inh...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm100912b
更新日期:2011-03-10 00:00:00
abstract::An efficient and general method has been developed for fluorine-18 labeling of beta-blockers that possess the propanolamine moiety. A new synthetically versatile intermediate, 3-(1-(benzyloxy)propan-2-yl)-2-oxooxazolidin-5-yl)methyl 4-methylbenzenesulfonate (13), was prepared and can be conjugated to any phenoxy core....
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm800227h
更新日期:2008-08-28 00:00:00
abstract::Dual leucine zipper kinase (DLK, MAP3K12) is an essential driver of the neuronal stress response that regulates neurodegeneration in models of acute neuronal injury and chronic neurodegenerative diseases such as Alzheimer's, Parkinson's, and ALS. In this review, we provide an overview of DLK signaling mechanisms and d...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章,评审
doi:10.1021/acs.jmedchem.8b00370
更新日期:2018-09-27 00:00:00
abstract::A series of 3-(1,2-disubstituted-1H-benzimidazol-5-yl)-N-hydroxyacrylamides (1) were designed and synthesized as HDAC inhibitors. Extensive SARs have been established for in vitro potency (HDAC1 enzyme and COLO 205 cellular IC(50)), liver microsomal stability (t(1/2)), cytochrome P450 inhibitory (3A4 IC(50)), and clog...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm2003552
更新日期:2011-07-14 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::It is a great challenge to develop drugs for treatment of metabolic syndrome. With ganomycin I as a leading compound, 14 meroterpene derivatives were synthesized and screened for their α-glucosidase and HMG-CoA reductase inhibitory activities. As a result, a α-glucosidase and HMG-CoA reductase dual inhibitor (( R, E)-...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.8b00107
更新日期:2018-04-26 00:00:00
abstract::A common dichotomy exists in inhibitor design: should the compounds be designed to block the enzymes of animals in the preclinical studies or to inhibit the human enzyme? We report that a single mutation of Leu-337 in rat neuronal nitric oxide synthase (nNOS) to His makes the enzyme resemble human nNOS more than rat n...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm900380j
更新日期:2009-07-23 00:00:00
abstract::Eye diseases characterized by excessive angiogenesis such as wet age-related macular degeneration, proliferative diabetic retinopathy, and retinopathy of prematurity are major causes of blindness. Cremastranone is an antiangiogenic, naturally occurring homoisoflavanone with efficacy in retinal and choroidal neovascula...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.5b00449
更新日期:2015-06-25 00:00:00
abstract::Over 25 selected naphthalenesulfonic acid derivatives were evaluated for their inhibitory effect on two different functional domains of the HIV-1 reverse transcriptase (RT), namely the ribonuclease H and DNA polymerase activities. Most of the analogues were found to be either specific toward the DNA polymerase activit...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00042a004
更新日期:1994-08-05 00:00:00
abstract::The adenosine antagonist 9-chloro-2-(2-furanyl)[1,2,4]triazolo[1,5-c]quinazolin-5-amine (CGS15943) binds to human A3 receptors with high affinity (Ki = 14 nM), while it lacks affinity at rat A3 receptors. Acylated derivatives of the 5-amino group and other modifications were prepared in an effort to provide A3 subtype...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm960482i
更新日期:1996-10-11 00:00:00
abstract::(-)-(2R,4R)-1-(2-Hydroxymethyl-1,3-dioxolan-4-yl)thymine (DOT) is the first thymidine kinase-activated nucleoside that is significantly active against all of the clinically significant NRTI-resistant HIV-1 mutants, including AZT (D67N/K70R/T215Y/K219Q), Tenofovir (K65R), and Lamivudine (M184V). To understand the molec...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm050060l
更新日期:2005-06-16 00:00:00
abstract::(+)-Deoxoartelinic acid (13), a new hydrolytically stable, water-soluble, and potent non-acetal-type antimalarial drug candidate, was successfully prepared from artemisinic acid by using sulfur ylide and photooxygenative cyclization in seven steps. This compound showed superior in vitro antimalarial activity against t...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm020244p
更新日期:2002-10-24 00:00:00
abstract::A novel series of pyridazinone-functionalized phenylalanine analogues was prepared and evaluated for inhibition of cellular adhesion mediated by alpha4beta1/VCAM-1 and alpha4beta7/MAdCAM-1 interactions. Concise syntheses were developed and applied for exploration of structure-activity relationships pertaining to the p...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm060031q
更新日期:2006-06-01 00:00:00
abstract::A series of inhibitors of the malarial aspartic proteases Plm I and II have been synthesized with L-mannitol as precursor. These inhibitors are characterized by either a diacylhydrazine or a five-membered oxadiazole ring replacing backbone amide functionalities. Molecular dynamics simulations were applied in the desig...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm050463l
更新日期:2005-09-22 00:00:00
abstract::N-[2-Hydroxy-5-[2-(methylamino)ethyl]phenyl]methanesulfonamide (SK&F 102652) has been prepared and characterized pharmacologically. It is a potent agonist with an EC50 of 25 nM at alpha 1-adrenoceptors as determined in the isolated perfused rabbit ear artery. On the presynaptic alpha 2-adrenoceptors of the guinea pig ...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00380a017
更新日期:1985-02-01 00:00:00
abstract::The olefinic dipeptide 5(S)-amino-7-methyl-3(E)-octenoic acid (1) was synthesized and used to make the olefinic peptides Leu psi [E-CH = CH]Gly-Val-Phe-OCH3 (2) and His-Leu psi [E-CH = CH]Gly-Val-Phe-OCH3 (3). These olefinic peptides were found to exhibit renin inhibitory activity against both hog kidney renin and hum...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00376a023
更新日期:1984-10-01 00:00:00
abstract::Glycogen synthase kinase 3beta (GSK-3beta) inhibition is expected to be a promising therapeutic approach for treating Alzheimer's disease. Previously we reported a series of 1,3,4-oxadiazole derivatives as potent and highly selective GSK-3beta inhibitors, however, the representative compounds 1a,b showed poor pharmaco...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm900647e
更新日期:2009-10-22 00:00:00
abstract::The preparation and antitubercular properties of a series of 2,8-bis(alkylaminomethyl)phenazines are described. These compounds all inhibited the growth of Mycobacterium smegmatis ATCC 607 in vitro. 2,8-Bis(dibutylaminomethyl)phenazine (5c) was also active against a lethal Mycobacterium tuberculosis H37Rv infection in...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00202a020
更新日期:1978-04-01 00:00:00
abstract::A series of pyridine-2-carboxaldehyde N-oxide and pyridine-2-carboxaldehyde (thio)phosphoric hydrazones and two cupric chelates was synthesized. The hydrazones, chelates, and combinations of hydrazones and cupric chloride were tested against mice bearing P388 lymphocytic leukemia, Sarcoma 180, or Ehrlich carcinoma asc...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00209a011
更新日期:1978-11-01 00:00:00
abstract::In a search for structurally new alpha(1)-adrenoreceptor (alpha(1)-AR) antagonists, prazosin (1)-related compounds 2-11 were synthesized and their affinity profiles were assessed by functional experiments in isolated rat vas deferens (alpha(1A)), spleen (alpha(1B)), and aorta (alpha(1D)) and by binding assays in CHO c...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm030952q
更新日期:2003-11-06 00:00:00