Abstract:
:The simulated binding profiles of acetylcholine, ACh, and the inhibitor (+/-)-2,3-dihydro-5,6- dimethoxy-2-[[1-(phenylmethyl)-4-piperidinyl]methyl]-1H-inden-1-on e hydrochloride (E2020), 1, and some of its analogs to acetylcholinesterase, AChE, were determined using full force field energetics and allowing complete conformational flexibility in both the ligand and receptor. A new mode of binding of ACh to AChE was found which involves the carboxyl oxygen of ACh interacting with Gly 118 and 119. Multiple modes of binding of 1 and some of its analogs were found which include alignment models observed in previous more restricted modeling studies. The key ligand-receptor interactions identified, and the corresponding energetics, are consistent on a relative basis, with observed binding constants for both the individual isomers of each of the inhibitors, as well as among the inhibitors themselves. The multiple modes of binding of 1 to AChE arises from small changes in binding at a single subsite and also from multiple subsite changes. Thus, an independent subsite model for ligand-receptor binding holds for some modes of binding, but not for others. A comparison of the simulated AChE-1 (and analog inhibitors) binding models to the receptor-independent 3D-QSARs previously developed for this class of inhibitors reveals extensive mutual consistency. The findings from these two modeling studies provides greater guidelines for inhibitor design than can be realized from either one. The combined docking and 3D-QSAR studies permit a detailed understanding of the SAR of more than 100 compound 1 analog inhibitors. A simple molecular recognition model can also be gleaned from the docking studies. A cylindrical "plug" (the inhibitor) having a large dipole moment must sterically fit into a cylindrical hole (the active site gorge of AChE), the lining of which also has a large dipole moment. Our simulations suggest that the dynamic "back door" to the active site of AChE does not form a large enough opening for sufficiently long time periods so as to be an effective entrance/exit pathway.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Inoue A,Kawai T,Wakita M,Iimura Y,Sugimoto H,Kawakami Ydoi
10.1021/jm950596esubject
Has Abstractpub_date
1996-10-25 00:00:00pages
4460-70issue
22eissn
0022-2623issn
1520-4804pii
jm950596ejournal_volume
39pub_type
杂志文章abstract::The labeling of proteins with ubiquitin/ubiquitin-like (Ubl) proteins is crucial for several physiological processes and in the onset of various diseases. Recently, targeting ubiquitin protein labeling has shifted toward the use of allosteric mechanisms over classical activity-based approaches. Allosteric enzyme regul...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章,评审
doi:10.1021/acs.jmedchem.6b01346
更新日期:2018-01-25 00:00:00
abstract::The trans-(3,4)-dimethyl-4-(3-hydroxyphenyl)piperidines are a unique class of opioid antagonists that have recently provided selective antagonists for mu-opioid receptors (MOR) and kappa-opioid receptors (KOR). Molecular modeling indicated a strong structural similarity between the parent of this series and 2-amino-1,...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm040807s
更新日期:2004-10-07 00:00:00
abstract::The limited efficacy and considerable side effects of currently available therapies for the treatment of hepatitis C virus (HCV) infection have prompted significant efforts toward the development of safe and effective new therapeutics. The pentapeptide alpha-ketoamides of type 1 were weak HCV inhibitors with a binding...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm050323b
更新日期:2005-10-06 00:00:00
abstract::Rhodesain (RD) is a parasitic, human cathepsin L (hCatL) like cysteine protease produced by Trypanosoma brucei ( T. b.) species and a potential drug target for the treatment of human African trypanosomiasis (HAT). A library of hCatL inhibitors was screened, and macrocyclic lactams were identified as potent RD inhibito...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.7b01869
更新日期:2018-04-26 00:00:00
abstract::In order to obtain agents with therapeutic indices superior to those of AZT, FLT, or D4T, several analogues of anti-HIV-1 nucleosides were synthesized. These include 2',3'-dideoxy-2',3' -difluoro-5-methyluridine (13), its arabino analogue 19, arabino-5-methylcytosine analogue 21, 3'-deoxy-2',3'-didehydro-2' -fluorothy...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00109a017
更新日期:1991-05-01 00:00:00
abstract::A diverse range of chromen-2-one, chromen-4-one and pyrimidoisoquinolin-4-one derivatives was synthesized and evaluated for inhibitory activity against the DNA repair enzyme DNA-dependent protein kinase (DNA-PK), with a view to elucidating structure-activity relationships for potency and kinase selectivity. DNA-PK inh...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm049526a
更新日期:2005-01-27 00:00:00
abstract::Hepatocyte growth factor (HGF) is an important regulator of normal development and homeostasis, and dysregulated signaling through the HGF receptor, Met, contributes to tumorigenesis, tumor progression, and metastasis in numerous human malignancies. The development of selective small-molecule inhibitors of oncogenic t...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm800791f
更新日期:2009-02-26 00:00:00
abstract::Four novel steroidal alpha-methylene delta-lactones have been synthesized and shown to be active against human nasopharyngeal carcinoma (KB) cells in culture. The syntheses involved the use of known alpha-methylenation procedures. In addition, the lactone 6 was directly methylenated by reaction with CH2O/KOH or Et2NH/...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00175a019
更新日期:1980-01-01 00:00:00
abstract::In previous reports illustrating the effects of conformational restriction of the N-terminal region of human pancreatic growth hormone releasing factor, we demonstrated that D-amino acid substitutions in either of positions 1, 2, or 3 resulted in greatly increased growth hormone releasing activity both in vivo and in ...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00380a006
更新日期:1985-02-01 00:00:00
abstract::A representative series of 5-(4-hydroxyphenyl)-2-azabicyclo[3.2.1]octanes was synthesized and evaluated in vitro, as well as in vivo, as potential analgetic agents. In general, moderate to good activity (19 twice as active as morphine) was observed in the phenylquinone writhing assay (PQW), while only marginal activit...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00181a005
更新日期:1980-07-01 00:00:00
abstract::A number of 6-sulfenamide, 6-sulfinamide, and 6-sulfonamide derivatives of 2-aminopurine and certain related purine ribonucleosides have been synthesized and evaluated for antileukemic activity in mice. Amination of 6-mercaptopurine ribonucleoside (7a) and 6-thioguanosine (7b) with chloramine solution gave 9-beta-D-ri...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00163a020
更新日期:1990-01-01 00:00:00
abstract::The active metabolite (2) of the novel immunosuppressive agent leflunomide (1) has been shown to inhibit the enzyme dihydroorotate dehydrogenase (DHODH). This enzyme catalyzes the fourth step in de novo pyrimidine biosynthesis. A series of analogues of the active metabolite 2 have been synthesized. Their in vivo biolo...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm9604437
更新日期:1996-11-08 00:00:00
abstract::Antibiotic resistance is one of the biggest threats to public health, and new antibacterial agents hence are in an urgent need to combat infectious diseases caused by multidrug-resistant (MDR) pathogens. Utilizing dimerization strategy, we rationally designed and efficiently synthesized a new series of small molecule ...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.7b01704
更新日期:2018-04-12 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::High throughput screening followed by a lead generation campaign uncovered a novel series of urea containing morpholinopyrimidine compounds which act as potent and selective dual inhibitors of mTORC1 and mTORC2. We describe the continued compound optimization campaign for this series, in particular focused on identify...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm501778s
更新日期:2015-03-12 00:00:00
abstract::Starting from a simple chalcone template, structure-activity relationship (SAR) studies led to a series of carboxylated, heteroaryl-substituted chalcone derivatives as novel, potent inhibitors of vascular cell adhesion molecule-1 (VCAM-1) expression. Correlations between lipophilicity determined by calculated logP val...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm0614230
更新日期:2007-03-22 00:00:00
abstract::Iron depletion, using iron chelators targeting transferrin receptor (TfR) and ribonucleotide reductase (RR), is proven to be effective in the treatment of cancer. We synthesized and evaluated novel polyaminocarboxylate-based chelators NETA, NE3TA, and NE3TA-Bn and their bifunctional versions C-NETA, C-NE3TA, and N-NE3...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm701307j
更新日期:2008-04-10 00:00:00
abstract::A series of tricyclic indole-2-carboxylic acid derivatives were synthesized and evaluated by the radioligand binding assay and the anticonvulsant effects in the mouse NMDA-induced seizure model. Among them, derivatives of 3S-(-)-4 such as 3a, 3f, and 3g which had certain zwitterionic anilides showed high affinity to t...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm020239l
更新日期:2003-02-27 00:00:00
abstract::We previously reported (J. Med. Chem. 1993, 36, 1188-1193) that changes to the ring size of the piperidine and cyclohexyl rings of the high-affinity and selective dopamine (DA)-uptake inhibitor 1-[1-(2-benzo[b]thienyl)cyclohexyl]piperidine (BTCP, 2) caused different, and in some cases opposite, changes in affinity for...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00077a011
更新日期:1993-12-10 00:00:00
abstract::Three monomethylated derivatives of 4'-hydroxyacetanilide (acetaminophen) were prepared in order to compare their cytotoxic potential and analgesic activity with that of acetaminophen. Only 4'-hydroxy-N-methylacetanilide (N-methylacetaminophen) was devoid of cytotoxic effects to hepatic tissue of mice. Results of comp...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00159a029
更新日期:1986-09-01 00:00:00
abstract::N-Substituted cis-4a-(3-hydroxyphenyl)-8a-methyloctahydroisoquinolines (6a-g) were designed and synthesized as conformationally constrained analogues of the trans-3,4-dimethyl-4-(3-hydroxyphenyl)piperidine (4) class of opioid receptor pure antagonists. The methyloctahydroisoquinolines 6a-g can exist in conformations w...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm058261c
更新日期:2005-12-29 00:00:00
abstract::Recently we reported the synthesis of the first enantiomeric pair of irreversible opioid ligands [(3S,4R)-(-)- and (3R,4S)-(+)-cis-4, SUPERFIT] and specific interaction of the latter with the delta receptor. Here we report another enantiomeric pair of irreversible opioid ligands, (+)-trans- and (-)-trans-3-methylfenta...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00126a040
更新日期:1989-06-01 00:00:00
abstract::A series of cis- and trans-dihydroxycotahydrobenzo[f]quinoline congeners of dopamine has been prepared, in which the N substitutent is H, ethyl, or n-propyl. The trans isomers include the dopamine moiety held rigidly in an antiperiplanar diposition which is believed to be necessary for certian central and peripheral d...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00190a002
更新日期:1979-04-01 00:00:00
abstract::Inhibition of inducible T-cell kinase (ITK), a nonreceptor tyrosine kinase, may represent a novel treatment for allergic asthma. In our previous reports, we described the discovery of sulfonylpyridine (SAP), benzothiazole (BZT), indazole (IND), and tetrahydroindazole (THI) series as novel ITK inhibitors and how comput...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.6b00045
更新日期:2016-05-12 00:00:00
abstract::The E and Z isomers of 2-[2-(3-chlorophenyl)-1-phenyl-1-propenyl]pyridine (2a,b) and 2-[2-(3-chlorophenyl)-1-(4-hydroxyphenyl)-1-propenyl]pyridine (4a,b) were synthesized and separated as possible metabolites of 1-(3-chlorophenyl)-1-methyl-2-phenyl-2-(2-pyridine)ethanol (1a). Following administration of 1a to rats, a ...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00200a017
更新日期:1978-02-01 00:00:00
abstract::A series of 3,6-disubstituted pyridazino[4,3-c]isoquinolines were synthesized and tested for their ability to inhibit the binding of [3H]diazepam to rat brain receptors in vitro. Compounds bearing a phenyl, 4-methoxyphenyl, or methyl group at position 3 and a dialkylamino group at position 6 showed the highest affinit...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00147a034
更新日期:1985-09-01 00:00:00
abstract::It is now plausible to dock libraries of 10 million molecules against targets over several days or weeks. When the molecules screened are commercially available, they may be rapidly tested to find new leads. Although docking retains important liabilities (it cannot calculate affinities accurately nor even reliably ran...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章,评审
doi:10.1021/acs.jmedchem.5b02008
更新日期:2016-05-12 00:00:00
abstract::Tertiary EGFRC797S mutation induced resistance against osimertinib (1) is an emerging "unmet clinical need" for non-small-cell lung cancer (NSCLC) patients. A series of 5-methylpyrimidopyridone derivatives were designed and synthesized as new selective EGFRL858R/T790M/C797S inhibitors. A representative compound, 8r-B,...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.9b00576
更新日期:2019-08-08 00:00:00
abstract::Retinoic acid receptor-related orphan receptor γt (RORγt) is a nuclear receptor associated with the pathogenesis of autoimmune diseases. Allosteric inhibition of RORγt is conceptually new, unique for this specific nuclear receptor, and offers advantages over traditional orthosteric inhibition. Here, we report a highly...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.9b01372
更新日期:2020-01-09 00:00:00
abstract::Compound 7 was identified as a potent (IC50 = 14 nM), selective, and orally bioavailable (F = 70% in mouse) inhibitor of protein kinase B/Akt. While promising efficacy was observed in vivo, this compound showed effects on depolarization of Purkinje fibers in an in vitro assay and CV hypotension in vivo. Guided by an X...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm0701019
更新日期:2007-06-28 00:00:00