Abstract:
:A linear and non-linear quantitative structure-activity relationship (QSAR) study is presented for modeling and predicting heparanase inhibitors' activity. A data set that consisted of 92 derivatives of 2,3-dihydro-1,3-dioxo-1H-isoindole-5-carboxylic acid, furanyl-1,3-thiazol-2-yl and benzoxazol-5-yl acetic acids is used in this study. Among a large number of descriptors, four parameters classified as physico-chemical, topological and electronic indices are chosen using stepwise multiple regression technique. The artificial neural networks (ANNs) model shows superiority over the multiple linear regressions (MLR) by accounting 87.9% of the variances of antiviral potency of the heparanase inhibitors. This paper focuses on investigating the role of weight update functions in developing ANNs. Levenberg-Marquardt (L-M) algorithm shows a better performance compared with basic back propagation (BBP) and conjugate gradient (CG) algorithms. The accuracy of 4-3-1 L-M ANN model was illustrated using leave-one-out (LOO), leave-multiple-out (LMO) cross-validations and Y-randomization. The mean effect of descriptors and sensitivity analysis show that log P is the most important parameter affecting the inhibitory behavior of the molecules.
journal_name
Eur J Med Chemjournal_title
European journal of medicinal chemistryauthors
Jalali-Heravi M,Asadollahi-Baboli M,Shahbazikhah Pdoi
10.1016/j.ejmech.2007.04.014subject
Has Abstractpub_date
2008-03-01 00:00:00pages
548-56issue
3eissn
0223-5234issn
1768-3254pii
S0223-5234(07)00200-0journal_volume
43pub_type
杂志文章abstract::In this study, some aryl [3-(imidazol-1-yl/triazol-1-ylmethyl)benzofuran-2-yl] ketones, aryl (3-methyl-benzofuran-2-yl) ketoximes and aryl [3-(imidazol-1-yl/triazol-1-ylmethyl)benzofuran-2-yl] ketoximes were synthesised starting from 2-aryloyl-3-methyl-benzofuranes. The structure elucidation of the compounds was perfo...
journal_title:European journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.ejmech.2005.12.013
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journal_title:European journal of medicinal chemistry
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journal_title:European journal of medicinal chemistry
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abstract::3D-QSAR studies namely CoMFA, CoMFA region focusing and CoMSIA have been carried out on a series (36 compounds) of HIV-1 entry inhibitors. An alignment rule for the compounds was defined using Distill in SYBYL 7.3. Models were validated using a data set obtained by dividing the data set into a training set and test se...
journal_title:European journal of medicinal chemistry
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abstract::A library of sixteen 2nd generation amino- and amido-substituted carboranyl pyrimidine nucleoside analogs, designed as substrates and inhibitors of thymidine kinase 1 (TK1) for potential use in boron neutron capture therapy (BNCT) of cancer, was synthesized and evaluated in enzyme kinetic-, enzyme inhibition-, metabol...
journal_title:European journal of medicinal chemistry
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abstract::ALK and ROS1 kinases have become promising therapeutic targets since Crizotinib was used to treat non-small-cell lung cancer clinically. Aiming to explore new potent inhibitors, a series of 2-amino-4-(1-piperidine) pyridine derivatives that stabilized a novel DFG-shifted conformation in the kinase domain of ALK were d...
journal_title:European journal of medicinal chemistry
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journal_title:European journal of medicinal chemistry
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doi:10.1016/j.ejmech.2003.11.002
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abstract::A series of novel 3-amidoindole derivatives possessing 3,4,5-trimethoxylphenyl groups were synthesized and evaluated for their antiproliferative and tubulin polymerization inhibitory activities. Some of them demonstrated moderate to potent activities in vitro against six cancer cell lines including MCF-7, MDA-MB-231, ...
journal_title:European journal of medicinal chemistry
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abstract::A series of novel benzothiazole derivatives bearing the ortho-hydroxy N-carbamoylhydrazone moiety were designed and synthesized and their cytotoxic activities against five cancer cell lines (NCI-H226, SK-N-SH, HT29, MKN45, and MDA-MB-231) were screened in vitro. Most of them showed moderate to excellent activity again...
journal_title:European journal of medicinal chemistry
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abstract::Immunomodulatory glycolipids, among which α-galactosylceramide (KRN7000) is an iconic example, have shown strong therapeutic potential in a variety of conditions ranging from cancer and infection to autoimmune or neurodegenerative diseases. A main difficulty for those channels is that they often provoke a cytokine sto...
journal_title:European journal of medicinal chemistry
pub_type: 杂志文章
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abstract::The present studies reports the synthesis of hydoxylated thymol analogues (4a-e) and (6a-c) as mushroom tyrosinase inhibitors. The title compounds were obtained in good yield and characterized by FTIR, (1)H NMR, (13)C NMR, Mass spectral data and X-ray crystallography in case of compound (6a). The inhibitory effects on...
journal_title:European journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.ejmech.2015.05.031
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abstract::A series of new cinnamanilides (6-40) were synthesized and their immunosuppressive activity and cytotoxicity were evaluated. Most of the cinnamanilides showed good immunosuppressive activity. Among the synthesized compounds, (Z)-N-(4-bromophenyl)-2-methoxy-3-(4-methoxyphenyl)acrylamide (37) and (Z)-2-methoxy-3-(4-meth...
journal_title:European journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.ejmech.2011.10.027
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abstract::A library comprising 44 diversely substituted aurones derivatives was synthesized by straightforward aldol condensation reactions of benzofuranones and the appropriately substituted benzaldehydes. Microwave enhanced synthesis using palladium catalyzed protocols was introduced as a powerful strategy for extending the c...
journal_title:European journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.ejmech.2014.04.076
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abstract::Two thiazolidinedione scaffolds different in the position of the thiazolidinedione ring in the molecule were tested for in vitro cytotoxic activity in a panel of human cancer cell lines namely, prostate cancer cells PC-3, breast carcinoma cells MDA-MB-231, and fibrosarcoma cells HT-1080. Some of the target compounds o...
journal_title:European journal of medicinal chemistry
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abstract::Sigma 1 receptors are associated with neurodegenerative and psychiatric disorders. These receptors, via their chaperoning functions that counteract endoplasmic reticulum stress and block neurodegeneration, may serve as a target for a new generation of antidepressants or neuroprotective agents. The involvement of these...
journal_title:European journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.ejmech.2014.10.053
更新日期:2015-01-07 00:00:00
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journal_title:European journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.ejmech.2014.09.041
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abstract::Two series of pharmacophoric hybrids of phthalimide-GABA-anilides/hydrazones were designed and synthesized and evaluated for their anticonvulsant and neurotoxic properties. The structures of the synthesized compounds were confirmed by the use of their spectral data besides elemental analysis. Initial anticonvulsant sc...
journal_title:European journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.ejmech.2006.08.010
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journal_title:European journal of medicinal chemistry
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abstract::We previously described a series of imidazole-based inhibitors substituted at N-1 with an arylethanone chain as interesting inhibitors of neuronal nitric oxide synthase (nNOS), endowed with good selectivity vs endothelial nitric oxide synthase (eNOS). As a follow up of these studies, several analogs characterized by t...
journal_title:European journal of medicinal chemistry
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doi:10.1016/j.ejmech.2012.01.002
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abstract::Protein tyrosine phosphatases 1B (PTP1B) is a promising and validated therapeutic target to effectively treat T2DM and obesity. However, the development of charged PTP1B inhibitors was restricted due to their low cell permeability and poor bioavailability. Based on active natural products, two series of uncharged cate...
journal_title:European journal of medicinal chemistry
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journal_title:European journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.ejmech.2013.06.060
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abstract::The activity of a series of imidazo[2,1-b]thiazole guanylhydrazones as inhibitors of p90 ribosomal S6 kinase 2 (RSK2) is described. It was found that a small subset of compounds show both potent inhibition of RSK2 kinase activity and tumor cell growth in vitro. Detailed study of one of the most active compounds indica...
journal_title:European journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.ejmech.2011.07.001
更新日期:2011-09-01 00:00:00
abstract::Recent science evidenced the interlinkage of oxidative stress and cancer. Due to the inherent complexity of cancer and its accompanying effect of oxidative stress, novel molecules, containing combinatorial functionalities should be targeted. Herein, we synthesized gemcitabine-5'-O-lipoate derived from a regioselective...
journal_title:European journal of medicinal chemistry
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doi:10.1016/j.ejmech.2015.03.064
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abstract::A series of sulfapyridine-polyhydroxyalkylidene (or arylidene)-imino derivatives (Schiff's bases) 2a-c and 4a-e were prepared by condensation of 4-amino-N-pyridin-2-ylbenzenesulfonamide (1) with different monosaccharides or with aromatic aldehydes. Treatment of 2a-c with thioglycolic acid led to the formation of the C...
journal_title:European journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.ejmech.2009.10.044
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abstract::Cardanol is a phenolic lipid component of cashew nut shell liquid (CNSL), obtained as the byproduct of cashew nut food processing. Being a waste product, it has attracted much attention as a precursor for the production of high-value chemicals, including drugs. On the basis of these findings and in connection with our...
journal_title:European journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.ejmech.2015.12.024
更新日期:2016-01-27 00:00:00
abstract::Podophyllotoxin (PT) and its clinically used analogues are known to be powerful antitumour agents. These compounds contain a trans fused strained γ-lactone system, a feature that correlates to the process of epimerisation, whereby the trans γ-lactone system of ring D opens and converts to the more thermodynamically st...
journal_title:European journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.ejmech.2015.12.037
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abstract::A series of 1,2,4-triazole-3-carboxamides has been prepared from alkyl-1,2,4-triazole-3-carboxylates under mild conditions. The ability of these triazoles to displace [3H]-CP55940 from CB1 cannabinoid receptor was measured. However, they showed only poor to moderate binding affinities, indicating that substitution of ...
journal_title:European journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.ejmech.2005.06.012
更新日期:2006-01-01 00:00:00
abstract::A series of novel diastereoisomeric σ ligands 3 was designed, synthesized and pharmacologically evaluated. The highly rigid [4.3.3]propellane scaffold was used to fix the three dimensional orientation of the pharmacophoric moieties required for σ affinity. The syn,syn-configured aminocarbamate syn,syn-3a reveals the m...
journal_title:European journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.ejmech.2013.09.021
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abstract::In the human cell cycle, the Myt1 kinase is a crucial regulator of the G2/M transition. Because this membrane-associated kinase is hard to obtain and assay, there is a distinct lack of data so far. Here we report the derivatization of a glycoglycerolipid which was shown previously to be active in a Myt1 activity assay...
journal_title:European journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.ejmech.2012.06.007
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abstract::A series of thirty two novel pyrrolo[2,3-b]pyridine analogues synthesized, characterized ((1)H NMR, (13)C NMR and MS) and cytotoxic evaluation of these molecules carried out over a panel of three human cancer cell lines including A549 (lung cancer), HeLa (cervical cancer) and MDA MB-231 (breast cancer), using sulforho...
journal_title:European journal of medicinal chemistry
pub_type: 杂志文章
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更新日期:2016-05-23 00:00:00