1
|
Azomethine Ylides-Versatile Synthons for Pyrrolidinyl-Heterocyclic Compounds. Molecules 2023; 28:molecules28020668. [PMID: 36677727 PMCID: PMC9866015 DOI: 10.3390/molecules28020668] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Azomethine ylides are nitrogen-based three-atom components commonly used in [3+2]-cycloaddition reactions with various unsaturated 2π-electron components. These reactions are highly regio- and stereoselective and have attracted the attention of organic chemists with respect to the construction of diverse heterocycles potentially bearing four new contiguous stereogenic centers. This review article complies the most important [3+2]-cycloaddition reactions of azomethine ylides with various olefinic, unsaturated 2π-electron components (acyclic, alicyclic, heterocyclic, and exocyclic ones) reported over the past two decades.
Collapse
|
2
|
Song SC, Mai YL, Shi HH, Liao B, Wang F. High Anti-cancer Activity, Low Animal Toxicity, and Structure Activity Relationships of Curcumin Analogs. LETT DRUG DES DISCOV 2020. [DOI: 10.2174/2352096513999200714103641] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Background:
Inhibition of cancer cell growth and low in vivo toxicity are two important
criteria for the development of anti-cancer drugs. Curcumin is a promising candidate for developing
novel anti-cancer drug analogs. The research group designed the 3,5-bis-(3,4,5-
trimethoxybenzylidene)-1-methyl-piperidin-4-one analog of curcumin that significantly inhibited
the growth of esophageal cancer cells in vivo. In this study, 81 curcumin analogs were synthesized,
analyzed both in vitro and in vivo, and their structure activity relationships (SARs) were determined.
Methods:
Based on the parent structure of curcumin, 81 analogs of 3,5-bis(substitutedbenzylidene)-
piperidin-4-one compounds were designed and synthesized. Their anti-cancer activity in the human
cancer cell lines was evaluated using the MTT assay, and in vivo toxicity was evaluated in mice.
The SARs of selected compounds were analyzed.
Results and Discussion:
Among the designed curcumin analogs, 61 compounds exerted anti-cancer
effects higher than the parent compound in vitro; 23 compounds inhibited cell growth in the human
cancer cell line at low concentrations (IC50 values below 1 μM). The acute toxicity of curcumin
analogs was tested in mice; 13 compounds were selected, which did not show any obvious toxicity
at doses as high as 25.0 mg/kg. The SARs of these shortlisted curcumin analogs were determined.
Conclusion:
Twenty-three curcumin analogs exhibiting promising in vitro anti-cancer activity and
low in vivo toxicity were designed. SAR analysis indicated the optimal functional groups in the
molecule required for anti-cancer activity. This study not only suggested a useful strategy to design
curcumin analogs for the development of anti-cancer drugs, but also revealed a group of curcumin
analogs which could be further explored.
Collapse
Affiliation(s)
- Sen-Chuan Song
- Guangdong Research Institute of Petrochemical and Fine Chemical Engineering, Guangdong Academy of Sciences, Guangzhou 510665, China
| | - Yu-Liang Mai
- Guangdong Research Institute of Petrochemical and Fine Chemical Engineering, Guangdong Academy of Sciences, Guangzhou 510665, China
| | - Hua-Hong Shi
- Guangdong Research Institute of Petrochemical and Fine Chemical Engineering, Guangdong Academy of Sciences, Guangzhou 510665, China
| | - Bing Liao
- Guangdong Research Institute of Petrochemical and Fine Chemical Engineering, Guangdong Academy of Sciences, Guangzhou 510665, China
| | - Fei Wang
- Guangdong Research Institute of Petrochemical and Fine Chemical Engineering, Guangdong Academy of Sciences, Guangzhou 510665, China
| |
Collapse
|
3
|
Youssef MA, Panda SS, El-Shiekh RA, Shalaby EM, Aboshouk DR, Fayad W, Fawzy NG, Girgis AS. Synthesis and molecular modeling studies of cholinesterase inhibitor dispiro[indoline-3,2'-pyrrolidine-3',3''-pyrrolidines]. RSC Adv 2020; 10:21830-21838. [PMID: 35516607 PMCID: PMC9054546 DOI: 10.1039/d0ra03064c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 05/29/2020] [Indexed: 01/18/2023] Open
Abstract
A set of dispiro[indoline-3,2′-pyrrolidine-3′,3′′-pyrrolidines] 8a–l was regioselectively synthesized utilizing multi-component azomethine cycloaddition reaction of 3-(arylmethylidene)pyrrolidine-2,5-diones 5a–e, isatins 6a–c and sarcosine 7. Single crystal X-ray studies of 8c add conclusive support for the structure. Compounds 8e and 8g reveal cholinesterase inhibitory properties with promising efficacy against both AChE and BChE and were found to be more selective towards AChE than BChE as indicted by the selectivity index like Donepezil (a clinically used cholinesterase inhibitory drug). Molecular modeling studies assist in understanding the bio-observations and identifying the responsible parameters behind biological properties. Dispiro[indoline-3,2′-pyrrolidine-3′,3′′-pyrrolidines] were regioselectively synthesized revealing cholinesterase (AChE, BChE) inhibitory properties.![]()
Collapse
Affiliation(s)
- M Adel Youssef
- Department of Chemistry, Faculty of Science, Helwan University Helwan Egypt
| | - Siva S Panda
- Department of Chemistry and Physics, Augusta University Augusta GA 30912 USA
| | - Riham A El-Shiekh
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University Cairo 11562 Egypt
| | - ElSayed M Shalaby
- X-Ray Crystallography Lab., Physics Division, National Research Centre Dokki Giza 12622 Egypt
| | - Dalia R Aboshouk
- Department of Pesticide Chemistry, National Research Centre Dokki Giza 12622 Egypt
| | - Walid Fayad
- Drug Bioassay-Cell Culture Laboratory, Pharmacognosy Department, National Research Centre Dokki Giza 12622 Egypt
| | - Nehmedo G Fawzy
- Department of Pesticide Chemistry, National Research Centre Dokki Giza 12622 Egypt
| | - Adel S Girgis
- Department of Pesticide Chemistry, National Research Centre Dokki Giza 12622 Egypt
| |
Collapse
|
4
|
Panda SS, Girgis AS, Thomas SJ, Capito JE, George RF, Salman A, El-Manawaty MA, Samir A. Synthesis, pharmacological profile and 2D-QSAR studies of curcumin-amino acid conjugates as potential drug candidates. Eur J Med Chem 2020; 196:112293. [PMID: 32311607 DOI: 10.1016/j.ejmech.2020.112293] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/28/2020] [Accepted: 03/28/2020] [Indexed: 02/01/2023]
Abstract
A series of curcumin bis-conjugates 3a-q, 5a-k and 6a-k were synthesized in good yields utilizing an optimized reaction condition. We explored the effect of different amino acids and protecting groups on biological activities of curcumin. The conjugates were screened for anti-inflammatory, analgesic and antimicrobial properties. Some of the conjugates showed promising biological observations with a potency comparable with the standard references. The variations in biological properties concerning different amino acids and protecting groups are interesting observations. Effects of the synthesized conjugates on splenocytes and the production of nitric oxide by lipopolysaccharide-stimulated peritoneal macrophages are correlated with the observed anti-inflammatory properties. We have also established the safety profile of the most active conjugates. Robust 2D-QSAR studies supported and validated biological data.
Collapse
Affiliation(s)
- Siva S Panda
- Department of Chemistry and Physics, Augusta University, Augusta, GA, 30912, USA.
| | - Adel S Girgis
- Department of Pesticide Chemistry, National Research Centre, Dokki, Giza, 12622, Egypt
| | - Sean J Thomas
- Department of Chemistry and Physics, Augusta University, Augusta, GA, 30912, USA
| | - Jason E Capito
- Department of Chemistry and Physics, Augusta University, Augusta, GA, 30912, USA
| | - Riham F George
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
| | - Asmaa Salman
- Medical and Pharmaceutical Chemistry Department, National Research Centre, Dokki, Giza, 12622, Egypt
| | - May A El-Manawaty
- Drug Bioassay-Cell Culture Laboratory, Pharmacognosy Department, National Research Centre, Dokki, Giza, 12622, Egypt
| | - Ahmed Samir
- Microbiology Department, Faculty of Veterinary Medicine, Cairo University, Cairo, Egypt
| |
Collapse
|
5
|
Khanna L, Singhal S, Jain SC, Khanna P. Spiro-Indole-Coumarin Hybrids: Synthesis, ADME, DFT, NBO Studies and In Silico Screening through Molecular Docking on DNA G-Quadruplex. ChemistrySelect 2020; 5:3420-3433. [PMID: 32328514 PMCID: PMC7169502 DOI: 10.1002/slct.201904783] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Accepted: 03/09/2020] [Indexed: 01/11/2023]
Abstract
New series of hybrids were synthesized by combination of 4-hydroxycoumarin with spiro[indol-indazole-thiazolidine]-diones and spiro[indol-pyrazole-thiazolidine]-diones, via hitherto unknown Schiff bases. The effects of substituents, such as -F, -Br and -CH3, on the crucial characteristics pertaining to the hybrids were investigated through computational studies. In silico or virtual screening through molecular docking studies on the library of 22 compounds, including reference compounds, precursors, non-hybrid and hybrid derivatives, was performed on DNA G-quadruplex of the human genome. All six freshly synthesized hybrids showed high binding energy as compared to non-hybrids as well as reference compounds. The presence of substituents at 5-position of indole enhanced the binding tendency of the ligand. ADME studies indicated good oral bioavailability and absorption of these compounds. Density Functional Theory (DFT) calculations of hybrids were done at B3LYP/6-311G++(d,p) level of computation. Their HOMO and LUMO energy plots reflected the presence of high charge transfer and chemical potential. Natural bond order (NBO) calculations predicted hyperconjugative interactions. The Molecular Electrostatic Potential (MEP) surface plots showed possible electrophilic and nucleophilic attacking sites of the hybrids. Compound 10 a (5-fluoro-spiro[indol-indazole-thiazolidine]-dione-coumarin hybrid), on the basis of global reactivity descriptors, was filtered to be chemically most reactive with the highest binding energy of -8.23 kcal/mol with DNA G-quadruplex. The synthesized hybrid coumarin derivatives in correlation with theoretical docking studies validate that hybrid derivatives are more reactive compared to their non-hybrid counterparts.
Collapse
Affiliation(s)
- Leena Khanna
- Department of ChemistryUniversity of DelhiDelhi110007India
- University School of Basic and Applied SciencesGuru Gobind Singh Indraprastha University, Sector 16-C, DwarkaNew Delhi110078India
| | - Sugandha Singhal
- University School of Basic and Applied SciencesGuru Gobind Singh Indraprastha University, Sector 16-C, DwarkaNew Delhi110078India
| | | | - Pankaj Khanna
- Department of ChemistryUniversity of DelhiDelhi110007India
- Department of ChemistryAcharya Narendra Dev CollegeUniversity of Delhi, KalkajiNew Delhi110019India
| |
Collapse
|
6
|
Insuasty D, Castillo J, Becerra D, Rojas H, Abonia R. Synthesis of Biologically Active Molecules through Multicomponent Reactions. Molecules 2020; 25:E505. [PMID: 31991635 PMCID: PMC7038231 DOI: 10.3390/molecules25030505] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 01/18/2020] [Accepted: 01/20/2020] [Indexed: 02/02/2023] Open
Abstract
Focusing on the literature progress since 2002, the present review explores the highly significant role that multicomponent reactions (MCRs) have played as a very important tool for expedite synthesis of a vast number of organic molecules, but also, highlights the fact that many of such molecules are biologically active or at least have been submitted to any biological screen. The selected papers covered in this review must meet two mandatory requirements: (1) the reported products should be obtained via a multicomponent reaction; (2) the reported products should be biologically actives or at least tested for any biological property. Given the diversity of synthetic approaches utilized in MCRs, the highly diverse nature of the biological activities evaluated for the synthesized compounds, and considering their huge structural variability, much of the reported data are organized into concise schemes and tables to facilitate comparison, and to underscore the key points of this review.
Collapse
Affiliation(s)
- Daniel Insuasty
- Grupo de Investigación en Química y Biología, Departamento de Química y Biología, Universidad del Norte, Km 5 vía Puerto Colombia 1569, Barranquilla Atlántico 081007, Colombia;
| | - Juan Castillo
- Grupo de Catálisis, Escuela de Ciencias Químicas, Universidad Pedagógica y Tecnológica de Colombia UPTC, Avenida Central del Norte 39-115, Tunja 150003, Colombia; (J.C.); (D.B.); (H.R.)
- Bioorganic Compounds Research Group, Department of Chemistry, Universidad de los Andes, Carrera 1 No. 18A-10, Bogotá 111711, Colombia
| | - Diana Becerra
- Grupo de Catálisis, Escuela de Ciencias Químicas, Universidad Pedagógica y Tecnológica de Colombia UPTC, Avenida Central del Norte 39-115, Tunja 150003, Colombia; (J.C.); (D.B.); (H.R.)
| | - Hugo Rojas
- Grupo de Catálisis, Escuela de Ciencias Químicas, Universidad Pedagógica y Tecnológica de Colombia UPTC, Avenida Central del Norte 39-115, Tunja 150003, Colombia; (J.C.); (D.B.); (H.R.)
| | - Rodrigo Abonia
- Research Group of Heterocyclic Compounds, Department of Chemistry, Universidad del Valle, Cali A. A. 25360, Colombia
| |
Collapse
|
7
|
Fawzy NG, Panda SS, Fayad W, El-Manawaty MA, Srour AM, Girgis AS. Novel Curcumin Inspired Antineoplastic 1-Sulfonyl-4-Piperidones: Design, Synthesis and Molecular Modeling Studies. Anticancer Agents Med Chem 2019; 19:1069-1078. [DOI: 10.2174/1871520619666190408131639] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 02/15/2019] [Accepted: 03/25/2019] [Indexed: 01/08/2023]
Abstract
Background:
Curcumin is a well-known example of plant origin exhibiting promising diverse biological
properties such as, anti-inflammatory and antitumor as well as poor pharmacokinetic/pharmacodynamic
properties. This is why effective agents based on its chemical scaffold were explored.
Methods:
A set of 3,5-bis(ylidene)-1-(alkylsulfonyl)piperidin-4-ones were synthesized in excellent yield (80-
96%) through dehydrohalogenation reaction of 3,5-bis(ylidene)-4-piperidinones with the corresponding alkane
sulfonyl chloride in the presence of triethylamine. Antiproliferative properties of the synthesized compounds
(dienone/curcumin inspired analogues) were studied by the standard MTT technique.
Results:
Most of the synthesized compounds revealed antiproliferative properties against HCT116 (colon) and
A431 (skin/squamous) cancer cell lines with IC50 values at sub-micromolar level. Compound 36 also exhibited
potency against MCF7 (breast) and A549 (lung) cancer cell lines (IC50 = 2.23, 4.27µM, respectively) higher than
that of the reference standards (IC50 = 3.15, 5.93µM for 5-fluorouracil and doxorubicin against MCF7 and A549
cell lines, respectively). Cytotoxic properties of the synthesized compounds against non-cancer RPE1 cell line
supported the safety profile of the effective agents against normal cells. Molecular modeling (3Dpharmacophore
and 2D-QSAR) studies validated the observed bio-properties and explained the parameters
governing activity. Inhibitory properties of compounds 27 and 29 (representative examples of the promising
antiproliferative agents synthesized) supported their mode of action against topoisomerase IIα
Conclusion:
The synthesized scaffold is a promising antitumor agent (with special selectivity against colon and
skin/squamous cancer cell lines) so, it can be considered for further investigation and development of highly
effective hits/leads based on the computational models obtained.
Collapse
Affiliation(s)
- Nehmedo G. Fawzy
- Department of Pesticide Chemistry, National Research Centre, Dokki, Giza 12622, Egypt
| | - Siva S. Panda
- Department of Chemistry & Physics, Augusta University, Augusta, GA 30912, United States
| | - Walid Fayad
- Drug Bioassay-Cell Culture Laboratory, Pharmacognosy Department, National Research Centre, Dokki, Giza, 12622, Egypt
| | - May A. El-Manawaty
- Drug Bioassay-Cell Culture Laboratory, Pharmacognosy Department, National Research Centre, Dokki, Giza, 12622, Egypt
| | - Aladdin M. Srour
- Department of Therapeutic Chemistry, National Research Centre, Dokki, Giza 12622, Egypt
| | - Adel S. Girgis
- Department of Pesticide Chemistry, National Research Centre, Dokki, Giza 12622, Egypt
| |
Collapse
|
8
|
Arsanious M, Darwish S, Shalaby ES, El-Ghwas D. Synthesis, X-ray, DFT Studies and Antimicrobial Properties of New Quinolinylphosphonates. LETT ORG CHEM 2019. [DOI: 10.2174/1570178616666181231161801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The phosphorus atom in hexamethyl phosphorus triamide 5 attacks the carbonyl function in
2-chloroquinoline-3-carbaldehyde 4a to give the bis-quinolinyl ethanone product 6. On the other hand,
quinoline ring-attack proceeds by the same phosphorus reagent upon reaction with 2-chloroquinoline-
3-aldoxime 4b yielding phosphonate 7. Meanwhile, the reaction of the tris-aminophosphine reagent 5
with 2-chloroquinoline- 3-(p-chlorophenyl)imine 4c affords the respective α-aminophosphonate 8.
Moreover, the attack by phosphine 5 on 2-chloroquinoline-3-imines 4d and 4e produces the respective
cyclic azophosphole derivatives 9a and 9b. [(2-chloroquinolin-3-yl)methylidene]propane dinitrile 4f
reacts with phosphine 5 to yield [(2-chloroquinolinen-3-yl) 2,2-dicyanoethyl]tetramethylphosphonic
diamide 10. Structural elucidations for the new products were based on compatible analytical and spectroscopic
data. Moreover, the structures assigned for compounds 7 and 9a were unambiguously confirmed
by X-ray crystallographic measurements. Biological evaluations indicated that compounds 4a,c
exhibit antibacterial potency against Gram-positive bacteria and 4a,c and 9a show activity against
Candida albicans strain.
Collapse
Affiliation(s)
- Mona Arsanious
- Organometallic and Organometalloid Chemistry Department, National Research Centre, El Bohouth St, Dokki, Giza, P.O. Box 12622, Egypt
| | - Shaban Darwish
- Organometallic and Organometalloid Chemistry Department, National Research Centre, El Bohouth St, Dokki, Giza, P.O. Box 12622, Egypt
| | - El-Sayed Shalaby
- X-Ray Crystallography Lab, National Research Centre, El Bohouth St, Dokki, Giza, P.O. Box 12622, Egypt
| | - Dina El-Ghwas
- Chemistry of Natural and Microbial Products Department, National Research Centre, El Bohouth St, Dokki, Giza, P.O. Box 12622, Egypt
| |
Collapse
|
9
|
An L, Liu JD, Peng XN, Zheng YG, Wang C, Huang TH. Preparation andin vitrobioactivity evaluation of N-heterocyclic-linked dihomooxacalix[4]arene derivatives. RSC Adv 2019; 9:41287-41297. [PMID: 35540075 PMCID: PMC9076386 DOI: 10.1039/c9ra06876g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 11/22/2019] [Indexed: 12/28/2022] Open
Abstract
Based on the superior prospects of calixarenes-based agents and N-heterocyclic pharmacophores in biomedical applications, 14 new dihomooxacalix[4]arene N-heterocyclic (pyridine, quinoline, and thiazole) derivatives 4a–4n were efficiently synthesized from the parent compound, namely, p-tert-butyldihomooxacalix[4]arene 1; they were further investigated by using their IR, 1H NMR, 13C NMR, and HRMS spectra. Among these derivatives, the crystal and molecular structures of 2-aminomethyl-pyridine-substituted dihomooxacalix[4]arene 4f (obtained from methanol) have been determined by X-ray diffraction. In the case of the inhibition assay of cell growth, we evaluated the effects on four select tumor cell lines (MCF-7, HepG2, SKOV3, and HeLa), as well as the normal cell lines of HUVEC, using paclitaxel as the positive control drug. It was found that the derivatives 4d–4f, 4i, 4k, and 4l could inhibit tumoral activity up to varying degrees. Mechanistically, the cell cycle analysis demonstrated that dihomooxacalix[4]arene N-heterocyclic derivatives could induce apoptosis of MCF cells. In addition, the results of the western blot and immunofluorescence studies revealed the upregulation of the protein expression levels of Bax and cleaved caspase-3, as well as the downregulation of Bcl-2, which are in good agreement with the corresponding inhibitory potencies. Therefore, these findings suggest that N-heterocyclic derivatives based on the dihomooxacalix[4]arene scaffold are promising candidates for use against cancer. Based on superior prospects of calixarenes in biomedical fields, the bioactivity of novel N-heterocyclic linked dihomooxacalix[4]arene derivatives 4a–4n were evaluated in vitro. The crystal structure of 4f was also determined by X-ray diffraction.![]()
Collapse
Affiliation(s)
- Lin An
- College of Pharmacy
- Xuzhou Medical University
- Xuzhou 221004
- P. R. China
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy
| | - Jia-dong Liu
- College of Pharmacy
- Xuzhou Medical University
- Xuzhou 221004
- P. R. China
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy
| | - Xian-na Peng
- College of Pharmacy
- Xuzhou Medical University
- Xuzhou 221004
- P. R. China
| | - You-guang Zheng
- College of Pharmacy
- Xuzhou Medical University
- Xuzhou 221004
- P. R. China
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy
| | - Chan Wang
- College of Pharmacy
- Xuzhou Medical University
- Xuzhou 221004
- P. R. China
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy
| | - Tong-hui Huang
- College of Pharmacy
- Xuzhou Medical University
- Xuzhou 221004
- P. R. China
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy
| |
Collapse
|
10
|
Synthesis & molecular modeling studies of bronchodilatory active indole–pyridine conjugates. Future Med Chem 2018; 10:1787-1804. [DOI: 10.4155/fmc-2018-0039] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Aim: Synthesis of novel bronchodilatory active indole–pyridine conjugates. Results/methodology: Indole–pyridine conjugates (6a–n, 8a–i and 10a–c) were synthesized in a facile pathway through reaction of 2-[(1-alkyl-1H-indol-3-yl)methylene]malononitriles 4a,b with the corresponding ketone-containing compounds (5a–f, 7a–c and 9a,b) in the presence of sodium alkoxide. Single (6l, 8 g) and powder (6k, 8d) x-ray studies supported the structures. Results: Histamine precontracted isolated tracheal rings of guinea pig exhibited the potent bronchodilation properties of 6c (about double-fold potency relative to the standard reference, theophylline). Some of the synthesized conjugates (8d, 6c, 6f and 6e) revealed promising reduction of IL-8 production during lipopolysaccharide-induced airway inflammatory bioassay. Computational studies (3D pharmacophore, 2D-QSAR ‘quantitative structure–activity relationship’) showed high approximations to the bronchodilation properties and explained the parameters controlling biological observations.
Collapse
|
11
|
Mohammadi Ziarani G, Moradi R, Lashgari N. Asymmetric synthesis of chiral oxindoles using isatin as starting material. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.01.025] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
12
|
Synthesis, characterization, and cytotoxic activity of some new 1,3,4-trisubstituted pyrazoles against diverse tumor cell lines. MONATSHEFTE FUR CHEMIE 2018. [DOI: 10.1007/s00706-018-2153-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
13
|
Galal AMF, Shalaby EM, Abouelsayed A, Ibrahim MA, Al-Ashkar E, Hanna AG. Structure and absolute configuration of some 5-chloro-2-methoxy-N-phenylbenzamide derivatives. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 188:213-221. [PMID: 28715689 DOI: 10.1016/j.saa.2017.06.068] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 06/05/2017] [Accepted: 06/30/2017] [Indexed: 06/07/2023]
Abstract
The absolute configuration of 5-chloro-2-methoxy-N-phenylbenzamide single crystal [compound (1)] and the effect of introducing -[CH2]n-, n=1,2 group adjacent to the amide group [compounds (2) and (3)], were studied. Furthermore, the replacement of the methoxy group with a hydroxy group [compound (4)] was defined. Proton and carbon-13 NMR spectrometer were used to record the structural information of the prepared compounds. X-ray single crystal diffractometer were used to elucidate the 3D structural configurations. Intensity data for the studied compounds were collected at room temperature. The X-ray data prove that compound (1) is almost planar, with maximum r.m.s. deviations of 0.210(3)Å corresponds to C13. This planarity starts to disturb by adding -[CH2]n-, n=1,2 groups between the NH group and the phenyl ring in compounds (2) and (3), respectively. By replacing the OCH3 group by an OH group in compound (4), the plane of the chlorophenyl moiety is nearly perpendicular to that of the phenyl ring. Such new structural configurations were further illustrated by the infrared, and ultraviolet-visible spectroscopy measurements in the frequency range 400-4000cm-1 and 190-1100nm, respectively. Spectroscopic analyses were verified with the help of molecular modeling using density functional theory. The estimated total dipole moment for the prepared compounds reflects its ability to interact with its surrounding molecules. The higher dipole moment for a given structures is combined with the higher reactivity for potential use in medicinal applications.
Collapse
Affiliation(s)
- Alaaeldin M F Galal
- Chemistry of Natural Compounds Department, Drug and Pharmaceutical Industries Research Division, National Research Centre, 33 El Bohouth st. (former El Tahrir st.), Dokki, P.O. 12622, Giza, Egypt
| | - Elsayed M Shalaby
- X-Ray Crystallography Laboratory, Physics Division, National Research Centre, 33 El Bohouth st. (former El Tahrir st.), Dokki, P.O. 12622, Giza, Egypt
| | - Ahmed Abouelsayed
- Spectroscopy Department, Physics Division, National Research Centre, 33 El Bohouth st. (fromer El Tahrir st.), Dokki, P.O. 12622, Giza, Egypt.
| | - Medhat A Ibrahim
- Spectroscopy Department, Physics Division, National Research Centre, 33 El Bohouth st. (fromer El Tahrir st.), Dokki, P.O. 12622, Giza, Egypt
| | - Emad Al-Ashkar
- Spectroscopy Department, Physics Division, National Research Centre, 33 El Bohouth st. (fromer El Tahrir st.), Dokki, P.O. 12622, Giza, Egypt
| | - Atef G Hanna
- Chemistry of Natural Compounds Department, Drug and Pharmaceutical Industries Research Division, National Research Centre, 33 El Bohouth st. (former El Tahrir st.), Dokki, P.O. 12622, Giza, Egypt
| |
Collapse
|
14
|
Synthesis, antibacterial properties and 2D-QSAR studies of quinolone-triazole conjugates. Eur J Med Chem 2018; 143:1524-1534. [DOI: 10.1016/j.ejmech.2017.10.042] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 10/06/2017] [Accepted: 10/15/2017] [Indexed: 12/14/2022]
|
15
|
Shalaby EM, Srour AM, Panda SS, George RF, Fitch AN, Girgis AS. Synthesis, X-ray powder diffraction and DFT-D studies of indole-based compounds. ACTA ACUST UNITED AC 2017. [DOI: 10.1515/zkri-2017-2106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Four indole-based compounds have been synthesized and their crystal structures determined using high-resolution synchrotron powder X-ray diffraction. In vacuo density function theory (DFT) optimization has been used in building initial molecular models for structure solution with the help of the Cambridge structure database. All four compounds were found to crystallize in the monoclinic space group P21/c. Dispersion-corrected DFT (DFT-D) has been used for experimental crystal structure validation with acceptable agreement found between the DFT-optimized and final refined structures. Three of the compounds exhibit bronchodilation properties with potency comparable to the theophylline (standard reference).
Collapse
Affiliation(s)
- ElSayed M. Shalaby
- X-Ray Crystallography Lab., Physics Division, National Research Centre , Dokki, Giza 12622 , Egypt
| | - Aladdin M. Srour
- Therapeutical Chemistry Department, National Research Centre , Dokki, Giza 12622 , Egypt
| | - Siva S. Panda
- Department of Chemistry and Physics , Augusta University , Augusta, GA 30912 , USA
| | - Riham F. George
- Pharmaceutical Chemistry Department, Faculty of Pharmacy , Cairo University , Cairo , Egypt
| | - Andrew N. Fitch
- European Synchrotron Radiation Facility , CS40220 , 38043 Grenoble Cedex 9 , France
| | - Adel S. Girgis
- Pesticide Chemistry Department, National Research Centre , Dokki, Giza 12622 , Egypt
| |
Collapse
|
16
|
Identification of some novel xanthine-based derivatives with bronchodilator activity. Future Med Chem 2017; 9:1731-1747. [PMID: 28871831 DOI: 10.4155/fmc-2017-0092] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
AIM The discovery of new bronchodilators with higher efficacy than theophylline is an important issue for asthmatic patients. MATERIALS & METHODS Theophylline 2, 8-bromotheophylline 4 and theobromine 6 were reacted with different 2/3-chloro-N-phenylacetamides 1a-d or their propanamide analogs 1e-g to obtain 3a-g, 5a-g and 7a-g, respectively. The target compounds were screened for their in vitro bronchodilator activity using isolated guinea pig tracheal rings precontracted with histamine and compared with their precursors. RESULTS Many compounds exhibited promising activity especially 3d, 3f, 5d, 7d and 7e. 2D-QSAR study resulted in a significant model (N = 24, n = 5, R 2 = 0.848, R 2cvOO = 0.748, R 2cvMO = 0.745, F = 21.215, s 2 = 0.0002) using CODESSA-Pro software. CONCLUSION These compounds can be considered as promising hits for potent bronchodilators that may be useful for further investigations. [Formula: see text].
Collapse
|
17
|
Soliman EA, Panda SS, Aziz MN, Shalaby EM, Mishriky N, Asaad FM, Girgis AS. Synthesis, molecular modeling studies and bronchodilation properties of nicotinonitrile containing-compounds. Eur J Med Chem 2017; 138:920-931. [PMID: 28753516 DOI: 10.1016/j.ejmech.2017.07.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 06/30/2017] [Accepted: 07/16/2017] [Indexed: 12/13/2022]
Abstract
Facile synthetic pathway for nicotinonitriles 5a‒o, 7a‒i was demonstrated through reaction of ketones 4a‒k, 6a‒f with ylidenemalononitrile 3 in the presence of sodium alkoxide. Meanwhile, nucleophilic attack of amines on 2-bromonicotinonitrile 9 (obtained through reaction of propenone 8 with malononitrile, followed by bromination with bromine in acetic acid) afforded 3-pyridinecarbonitriles 11a‒d. Single crystal X-ray of compound 7i reveals the monoclinic space group C2/c with 8 molecules per unit cell. Optimized structure of 7i [DFT/B3LYP, 6-31G(d,p)] shows close correlations to that of X-ray study. Compound 5l seems superior among all the synthesized analogues exhibiting bronchodilation properties about three folds potency compared to theophylline (standard reference) through pre-contracted tracheal rings with histamine standard method. Also compound 5a reveals promising observations (about two folds potency of the standard reference). Molecular modeling studies (3D-pharmacophore and 2D-QSAR) supported the observed biological properties.
Collapse
Affiliation(s)
- E A Soliman
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Siva S Panda
- Department of Chemistry & Physics, Augusta University, Augusta, GA 30912, USA
| | - Marian N Aziz
- Pesticide Chemistry Department, National Research Centre, Dokki, Giza 12622, Egypt
| | - ElSayed M Shalaby
- X-ray Crystallography Laboratory, Physics Division, National Research Centre, Dokki, Giza 12622, Egypt
| | - Nawal Mishriky
- Pesticide Chemistry Department, National Research Centre, Dokki, Giza 12622, Egypt
| | - Fahmy M Asaad
- Pesticide Chemistry Department, National Research Centre, Dokki, Giza 12622, Egypt
| | - Adel S Girgis
- Pesticide Chemistry Department, National Research Centre, Dokki, Giza 12622, Egypt.
| |
Collapse
|
18
|
Ismail NSM, George RF, Serya RAT, Baselious FN, El-Manawaty M, Shalaby EM, Girgis AS. Rational design, synthesis and 2D-QSAR studies of antiproliferative tropane-based compounds. RSC Adv 2016. [DOI: 10.1039/c6ra21486j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel tropane-based compounds were synthesized exhibiting antiproliferative properties against HepG2 and MCF7 carcinoma cell lines.
Collapse
Affiliation(s)
- Nasser S. M. Ismail
- Pharmaceutical Chemistry Department
- Faculty of Pharmaceutical Sciences and Pharmaceutical Industries
- Future University
- Cairo 12311
- Egypt
| | - Riham F. George
- Pharmaceutical Chemistry Department
- Faculty of Pharmacy
- Cairo University
- Cairo
- Egypt
| | - Rabah A. T. Serya
- Pharmaceutical Chemistry Department
- Faculty of Pharmacy
- Ain Shams University
- Cairo
- Egypt
| | - Fady N. Baselious
- Research and Development Department
- Global Napi Pharmaceuticals
- 6th October City
- Egypt
| | - May El-Manawaty
- Pharmacognosy Department
- National Research Centre
- Giza 12622
- Egypt
| | - ElSayed M. Shalaby
- X-Ray Crystallography Lab
- Physics Division
- National Research Centre
- Giza 12622
- Egypt
| | - Adel S. Girgis
- Pesticide Chemistry Department
- National Research Centre
- Giza 12622
- Egypt
| |
Collapse
|
19
|
Shalaby EM, Girgis AS, Farag H, Mabied AF, Fitch AN. Synthesis, X-ray powder diffraction and DFT calculations of vasorelaxant active 3-(arylmethylidene)pyrrolidine-2,5-diones. RSC Adv 2016. [DOI: 10.1039/c6ra24302a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Two 3-(arylmethylidene)pyrrolidine-2,5-diones, 12a and 12b, were synthesized and characterized by powder X-ray diffraction utilizing a high-resolution synchrotron X-ray powder technique as well as DFT calculations.
Collapse
Affiliation(s)
- ElSayed M. Shalaby
- European Synchrotron Radiation Facility
- 38043 Grenoble Cedex 9
- France
- X-Ray Crystallography Lab
- Physics Division
| | - Adel S. Girgis
- Pesticide Chemistry Department
- National Research Centre
- Dokki
- Egypt
| | - Hanaa Farag
- Pesticide Chemistry Department
- National Research Centre
- Dokki
- Egypt
| | - Ahmed F. Mabied
- X-Ray Crystallography Lab
- Physics Division
- National Research Centre
- Dokki
- Egypt
| | - Andrew N. Fitch
- European Synchrotron Radiation Facility
- 38043 Grenoble Cedex 9
- France
| |
Collapse
|