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Selected Papers from the 2nd International Electronic Conference on Medicinal...
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Selected Papers from the 2nd International Electronic Conference on Medicinal Chemistry

A special issue of Pharmaceuticals (ISSN 1424-8247).

Deadline for manuscript submissions: closed (30 April 2017) | Viewed by 41879

Special Issue Editor

Dr. Jean Jacques Vanden Eynde

E-Mail Website1 Website2
Guest Editor
Formerly Head, Department of Organic Chemistry (FS), University of Mons-UMONS, 7000 Mons, Belgium
Interests: heterocycles; medicinal chemistry; green chemistry; microwave-induced synthesis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue comprises selected papers from the 2nd International Electronic Conference on Medicinal Chemistry (ECMC-2), held 1-30 November 2016 on sciforum.net, an online platform for hosting scholarly e-conferences and discussion groups. For more information on ECMC-2, please go to: http://sciforum.net/conference/ecmc-2.

Dr. Jean Jacques Vanden Eynde
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Pharmaceuticals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

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Published Papers (6 papers)

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Research

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4098 KiB  
Article
Complexes of Oligoribonucleotides with D-Mannitol Inhibit Hemagglutinin–Glycan Interaction and Suppress Influenza A Virus H1N1 (A/FM/1/47) Infectivity In Vitro
by Nataliia Melnichuk, Larisa Semernikova and Zenoviy Tkachuk
Pharmaceuticals 2017, 10(3), 71; https://doi.org/10.3390/ph10030071 - 9 Aug 2017
Cited by 9 | Viewed by 5140
Abstract
The influenza virus hemagglutinin (HA) mediates both receptor (glycan) binding and membrane fusion for cell entry and has been the basis for subtyping influenza viruses. The oligoribonucleotides-d-mannitol (ORNs-d-M) complexes possess an anti-influenza activity in vitro and in vivo. In [...] Read more.
The influenza virus hemagglutinin (HA) mediates both receptor (glycan) binding and membrane fusion for cell entry and has been the basis for subtyping influenza viruses. The oligoribonucleotides-d-mannitol (ORNs-d-M) complexes possess an anti-influenza activity in vitro and in vivo. In the present studies, we have found that ORNs-d-M interferes with hemagglutinin (HA)–glycan interaction and suppress viral infection in host cells. HA–glycan interactions were evaluated to indirectly quantify the amount of influenza virus titer by an agglutination assay. Influenza virus infectivity was determined by TCID50 assay. The direct virucidal action of the complexes was evaluated by both cytopathic effects (CPE) reduction assay and cell MTT assay. We found that ORNs-d-M hinders interaction between HA and glycan. These complexes decreased the infectivity of influenza virus and had a direct virucidal action. ORNs-d-M reduces influenza virus infectivity, affecting the HA–glycan interaction in vitro. By suppressing the influenza viral infection, the ORNs-d-M can have direct virucidal action. Full article
(This article belongs to the Special Issue Selected Papers from the 2nd International Electronic Conference on Medicinal Chemistry)
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2673 KiB  
Article
Synthesis and Antiproliferative Activity of Novel Heterocyclic Indole-Trimethoxyphenyl Conjugates
by Michael M. Cahill, Kevin D. O’Shea, Larry T. Pierce, Hannah J. Winfield, Kevin S. Eccles, Simon E. Lawrence and Florence O. McCarthy
Pharmaceuticals 2017, 10(3), 62; https://doi.org/10.3390/ph10030062 - 5 Jul 2017
Cited by 4 | Viewed by 5831
Abstract
The synthesis and biological evaluation of a series of novel heterocyclic indole derivatives is described. The consolidation of the combretastatin and bisindolylmaleimide templates towards the inclusion of a novel heterocyclic ring proffered a versatile pharmacophore with which to pursue chemical diversification. Given literature [...] Read more.
The synthesis and biological evaluation of a series of novel heterocyclic indole derivatives is described. The consolidation of the combretastatin and bisindolylmaleimide templates towards the inclusion of a novel heterocyclic ring proffered a versatile pharmacophore with which to pursue chemical diversification. Given literature precedent, maleimide was initially investigated in this role and the bioactivity assessed by measurement of NCI-60 cell panel growth. Subsequently, a range of 5-aminopyrazoles was designed and developed to explore the specific effect of heterocycle hydrogen bonding on cell growth. The unique electronic nature of the 5-aminopyrazole moiety allowed for regiospecific monosubstitution on different sites of the ring, such as thiourea substitution at the N(1) position for derivative 45 or trifluoroacetylation on the 5-amino position for 43. Further derivatisation led to the ultimate development of bicyclic pyrazolotriazinedione 41 and pyrimidine 42 systems. The antiproliferative activities of these 3,4-diaryl-5-aminopyrazoles were assessed using the NCI-60 cell screen, disclosing the discovery of distinct selectivity profiles towards a number of cell lines, such as SNB-75 CNS cancer, UO-31 and CAKI-1 renal cancer cells. A series of DNA topological assays discounted the interaction with topoisomerase II as a putative mechanism of action. Full article
(This article belongs to the Special Issue Selected Papers from the 2nd International Electronic Conference on Medicinal Chemistry)
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1566 KiB  
Article
Chiral Derivatives of Xanthones: Investigation of the Effect of Enantioselectivity on Inhibition of Cyclooxygenases (COX-1 and COX-2) and Binding Interaction with Human Serum Albumin
by Carla Fernandes, Andreia Palmeira, Inês I. Ramos, Carlos Carneiro, Carlos Afonso, Maria Elizabeth Tiritan, Honorina Cidade, Paula C.A.G. Pinto, M. Lúcia M.F.S. Saraiva, Salette Reis and Madalena M.M. Pinto
Pharmaceuticals 2017, 10(2), 50; https://doi.org/10.3390/ph10020050 - 31 May 2017
Cited by 26 | Viewed by 7598
Abstract
Searching of new enantiomerically pure chiral derivatives of xanthones (CDXs) with potential pharmacological properties, particularly those with anti-inflammatory activity, has remained an area of interest of our group. Herein, we describe in silico studies and in vitro inhibitory assays of cyclooxygenases (COX-1 and [...] Read more.
Searching of new enantiomerically pure chiral derivatives of xanthones (CDXs) with potential pharmacological properties, particularly those with anti-inflammatory activity, has remained an area of interest of our group. Herein, we describe in silico studies and in vitro inhibitory assays of cyclooxygenases (COX-1 and COX-2) for different enantiomeric pairs of CDXs. The evaluation of the inhibitory activities was performed by using the COX Inhibitor Screening Assay Kit. Docking simulations between the small molecules (CDXs; known ligands and decoys) and the enzyme targets were undertaken with AutoDock Vina embedded in PyRx—Virtual Screening Tool software. All the CDXs evaluated exhibited COX-1 and COX-2 inhibition potential as predicted. Considering that the (S)-(−)-enantiomer of the nonsteroidal anti-inflammatory drug ketoprofen preferentially binds to albumin, resulting in lower free plasma concentration than (R)-(+)-enantiomer, protein binding affinity for CDXs was also evaluated by spectrofluorimetry as well as in in silico. For some CDXs enantioselectivity was observed. Full article
(This article belongs to the Special Issue Selected Papers from the 2nd International Electronic Conference on Medicinal Chemistry)
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1286 KiB  
Article
Synthesis and Pharmacological Properties of Novel Esters Based on Monoterpenoids and Glycine
by Mariia Nesterkina and Iryna Kravchenko
Pharmaceuticals 2017, 10(2), 47; https://doi.org/10.3390/ph10020047 - 18 May 2017
Cited by 22 | Viewed by 7130
Abstract
Esters based on mono- and bicyclic terpenoids with glycine have been synthesized via Steglich esterification and characterized by 1H-NMR, IR, and mass spectral studies. Their analgesic and anti-inflammatory activities were investigated after transdermal delivery on models of formalin, capsaicin, and AITC-induced pain, [...] Read more.
Esters based on mono- and bicyclic terpenoids with glycine have been synthesized via Steglich esterification and characterized by 1H-NMR, IR, and mass spectral studies. Their analgesic and anti-inflammatory activities were investigated after transdermal delivery on models of formalin, capsaicin, and AITC-induced pain, respectively. Glycine esters of menthol and borneol exhibited higher antinociceptive action, whereas eugenol derivative significantly suppressed the development of the inflammatory process. The mechanism of competitive binding between terpenoid esters and TRPA1/TRPV1 agonists was proposed explaining significant analgesic effect of synthesized derivatives. For an explanation of high anti-inflammatory activity, competitive inhibition between terpenoid esters and AITC for binding sites of the TRPA1 ion channel has been suggested. Full article
(This article belongs to the Special Issue Selected Papers from the 2nd International Electronic Conference on Medicinal Chemistry)
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Review

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5164 KiB  
Review
Advances in Drug Discovery of New Antitubercular Multidrug-Resistant Compounds
by Guilherme Felipe dos Santos Fernandes, Chung Man Chin and Jean Leandro Dos Santos
Pharmaceuticals 2017, 10(2), 51; https://doi.org/10.3390/ph10020051 - 1 Jun 2017
Cited by 39 | Viewed by 8309
Abstract
Tuberculosis (TB), a disease caused mainly by the Mycobacterium tuberculosis (Mtb), is according to the World Health Organization (WHO) the infectious disease responsible for the highest number of deaths worldwide. The increased number of multidrug-resistant (MDR-TB) and extensively drug-resistant (XDR-TB) strains, and [...] Read more.
Tuberculosis (TB), a disease caused mainly by the Mycobacterium tuberculosis (Mtb), is according to the World Health Organization (WHO) the infectious disease responsible for the highest number of deaths worldwide. The increased number of multidrug-resistant (MDR-TB) and extensively drug-resistant (XDR-TB) strains, and the ineffectiveness of the current treatment against latent tuberculosis are challenges to be overcome in the coming years. The scenario of drug discovery becomes alarming when it is considered that the number of new drugs does not increase proportionally to the emergence of drug resistance. In this review, we will demonstrate the current advances in antitubercular drug discovery, focusing on the research of compounds with potent antituberculosis activity against MDR-TB strains. Herein, active compounds against MDR-TB with minimum inhibitory concentrations (MICs) less than 11 µM and low toxicity published in the last 4 years in the databases PubMed, Web of Science and Scopus will be presented and discussed. Full article
(This article belongs to the Special Issue Selected Papers from the 2nd International Electronic Conference on Medicinal Chemistry)
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Other

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5245 KiB  
Meeting Report
Second International Electronic Conference on Medicinal Chemistry (ECMC-2)
by Annie Mayence and Jean Jacques Vanden Eynde
Pharmaceuticals 2017, 10(1), 20; https://doi.org/10.3390/ph10010020 - 31 Jan 2017
Cited by 4 | Viewed by 6636
Abstract
The second International Electronic Conference on Medicinal Chemistry, organized and sponsored by the publisher MDPI AG and the Journal Pharmaceuticals, took place in November 2016 on the SciForum website (www.sciforum.net/conference/ecmc-12). More than 150 authors from 22 countries participated in the event. Selected works [...] Read more.
The second International Electronic Conference on Medicinal Chemistry, organized and sponsored by the publisher MDPI AG and the Journal Pharmaceuticals, took place in November 2016 on the SciForum website (www.sciforum.net/conference/ecmc-12). More than 150 authors from 22 countries participated in the event. Selected works presented during the scientific meeting are disclosed in this report. Full article
(This article belongs to the Special Issue Selected Papers from the 2nd International Electronic Conference on Medicinal Chemistry)
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