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Vaz WF, Custodio JMF, Rodrigues NMN, Santin LG, Oliveira SS, Gargano R, Osório FAP, Aquino GLB, Camargo AJ, Oliveira MS, Napolitano HB. A novel dihydrocoumarin under experimental and theoretical characterization. J Mol Model 2017; 23:315. [PMID: 29044437 DOI: 10.1007/s00894-017-3485-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 09/25/2017] [Indexed: 10/18/2022]
Abstract
Coumarins are natural and synthetic active ingredients widely applied in diverse types of medicinal treatments, such as cancer, inflammation, infection, and enzyme inhibition (monoamine oxidase B). Dihydrocoumarin compounds are of great interest in organic chemistry due to their structural versatilities and, as part of our investigations concerning the structural characterization of small molecules, this work focuses on crystal structure and spectroscopic characterization of the synthesized and crystallized compound 4-(4-methoxyphenyl)-3,4-dihydro-chromen-2-one (C16H14O3). Additionally, a theoretical calculation was performed using density functional theory to analyze the sites where nucleophilic or electrophilic attack took place and to examine the molecular electrostatic potential surface. Throughout all of these calculations, both density functional theory and Car-Parrinello molecular dynamics were performed by fully optimized geometry. The spectroscopic analysis indicated the presence of aromatic carbons and hydrogen atoms, and also the carbonyl and methoxy groups that were confirmed by the crystallographic structure. The C16H14O3 compound has a non-classical intermolecular interaction of type C-H⋅⋅⋅O that drives the molecular arrangement and the crystal packing. Moreover, the main absorbent groups were characterized throughout calculated harmonic vibrational frequencies. Also, natural bond orbital analysis successfully locates the molecular orbital with π-bonding symmetry and the molecular orbital with π* antibonding symmetry. Finally, the gap between highest occupied and lowest unoccupied molecular orbitals implies in a high kinetic stability and low chemical reactivity of title molecule.
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Affiliation(s)
- W F Vaz
- Universidade Estadual de Goiás, 75001-970, Anápolis, GO, Brazil.,Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso, 78455-000, Lucas do Rio Verde, MT, Brazil
| | - J M F Custodio
- Universidade Estadual de Goiás, 75001-970, Anápolis, GO, Brazil.,Universidade Federal de Goiás, 74690-900, Goiânia, GO, Brazil
| | - N M N Rodrigues
- Universidade Estadual de Goiás, 75001-970, Anápolis, GO, Brazil
| | - L G Santin
- Universidade Estadual de Goiás, 75001-970, Anápolis, GO, Brazil.,Universidade de Brasília, 70904-970, Brasília, DF, Brazil
| | - S S Oliveira
- Universidade Estadual de Goiás, 75001-970, Anápolis, GO, Brazil
| | - R Gargano
- Universidade de Brasília, 70904-970, Brasília, DF, Brazil
| | - F A P Osório
- Universidade Federal de Goiás, 74690-900, Goiânia, GO, Brazil.,Pontifícia Universidade Católica de Goiás, 74605-010, Goiânia, GO, Brazil
| | - G L B Aquino
- Universidade Estadual de Goiás, 75001-970, Anápolis, GO, Brazil
| | - A J Camargo
- Universidade Estadual de Goiás, 75001-970, Anápolis, GO, Brazil
| | - M S Oliveira
- Universidade Estadual de Goiás, 75001-970, Anápolis, GO, Brazil
| | - H B Napolitano
- Universidade Estadual de Goiás, 75001-970, Anápolis, GO, Brazil.
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Biocatalytic Synthesis of Novel Partial Esters of a Bioactive Dihydroxy 4-Methylcoumarin by Rhizopus oryzae Lipase (ROL). Molecules 2016; 21:molecules21111499. [PMID: 27834873 PMCID: PMC6273029 DOI: 10.3390/molecules21111499] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 10/24/2016] [Accepted: 11/02/2016] [Indexed: 02/02/2023] Open
Abstract
Highly regioselective acylation has been observed in 7,8-dihydroxy-4-methylcoumarin (DHMC) by the lipase from Rhizopus oryzae suspended in tetrahydrofuran (THF) at 45 °C using six different acid anhydrides as acylating agents. The acylation occurred regioselectively at one of the two hydroxy groups of the coumarin moiety resulting in the formation of 8-acyloxy-7-hydroxy-4-methylcoumarins, which are important bioactive molecules for studying biotansformations in animals, and are otherwise very difficult to obtain by only chemical steps. Six monoacylated, monohydroxy 4-methylcoumarins have been biocatalytically synthesised and identified on the basis of their spectral data and X-ray crystal analysis.
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Abaee MS, Mohammadi M, Mojtahedi MM, Halvagar MR. Synthesis and Diels–Alder reactions of novel styrylcyclohexenol dienes: a general pathway for the synthesis of tricyclic lactone and octahydronaphthalene systems. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.07.096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Abdelkhalik AM, Paul NK, Jha A. Concise synthesis of 12a-methyl-11-aryl-1,2-dihydrobenzo[f]pyrrolo[1,2-a]quinolin-3(12aH)-ones as racemic 14-azaestrogen analogs. Steroids 2015; 98:107-13. [PMID: 25804763 DOI: 10.1016/j.steroids.2015.03.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 03/04/2015] [Accepted: 03/12/2015] [Indexed: 10/23/2022]
Abstract
A concise method for the synthesis of 14-azasteroid analogs with angular methyl group at C-13 of the steroidal nucleus has been reported in this paper. We have developed an interesting cascade reaction of arylacetylenes and N-(naphthalen-2-yl)pent-4-ynamides under gold (III)-catalysis to produce novel tetracyclic 12a-methyl-11-aryl-1,2-dihydrobenzo[f]pyrrolo[1,2-a]quinolin-3(12aH)-ones which may be viewed as 14-azaestrogen analogs.
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Affiliation(s)
| | - Nawal K Paul
- Department of Chemistry, Acadia University, Wolfville, NS, Canada
| | - Amitabh Jha
- Department of Chemistry, Acadia University, Wolfville, NS, Canada.
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Paul NK, Jha M, Bhullar KS, Rupasinghe HPV, Balzarini J, Jha A. All trans 1-(3-arylacryloyl)-3,5-bis(pyridin-4-ylmethylene)piperidin-4-ones as curcumin-inspired antineoplastics. Eur J Med Chem 2014; 87:461-70. [PMID: 25282269 DOI: 10.1016/j.ejmech.2014.09.090] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 09/20/2014] [Accepted: 09/28/2014] [Indexed: 12/23/2022]
Abstract
A series of eleven N-acryloyl/N-cinnamoyl 3,5-bis(pyridin-4-yl)methylene-4-piperidones were synthesized as curcumin-based candidate antineoplastic agents. The cytostatic potency of these compounds was evaluated against three representative cell lines and all compounds were found to exhibit significant anti-cancer cell activity in vitro. QSAR studies using several physicochemical parameters and 50% inhibitory concentration (IC50) values resulted in certain important correlations which will aid design of more potent analogs. Representative test compounds were investigated in the NCI 60-cell line panel where they were found to display a profound cytotoxicity. These compounds were also potent anti-oxidants and inhibitors of human topoisomerase IIα. Representative compounds were well-tolerated by human fibroblasts and by mice during the survival/toxicity studies.
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Affiliation(s)
- Nawal K Paul
- Department of Chemistry, Acadia University, Wolfville, Nova Scotia, Canada B4P 2R6
| | - Mamta Jha
- Department of Chemistry, Acadia University, Wolfville, Nova Scotia, Canada B4P 2R6
| | - Khushwant S Bhullar
- Department of Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, Nova Scotia, Canada B2N 5E3
| | - H P Vasantha Rupasinghe
- Department of Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, Nova Scotia, Canada B2N 5E3
| | - Jan Balzarini
- Rega Institute for Medical Research, KU Leuven, B-3000 Leuven, Belgium
| | - Amitabh Jha
- Department of Chemistry, Acadia University, Wolfville, Nova Scotia, Canada B4P 2R6.
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