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Yang L, Li M, Liu M. Establishment of a CoMFA Model Based on the Combined Activity of Bioconcentration, Long-Range Transport, and Highest Infrared Signal Intensity and Molecular Design of Environmentally Friendly PBB Derivatives. Polymers (Basel) 2021; 13:polym13030356. [PMID: 33499306 PMCID: PMC7865581 DOI: 10.3390/polym13030356] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/16/2021] [Accepted: 01/20/2021] [Indexed: 02/06/2023] Open
Abstract
In the current study, a comparative molecular field analysis (CoMFA) model with the combined activity of polybrominated biphenyls (PBBs) bioconcentration, long-range transport, and the highest infrared signal intensity (weight ratio of 5:4:1) was constructed based on the threshold method and was further evaluated and analyzed. PBB-153 derivatives with improved combined activity values of bioconcentration, long-range transport, and the highest infrared signals intensity were designed based on contour maps of the CoMFA model. The environmental stability and functionality of the derivatives were also evaluated. The constructed model showed good prediction ability, fitting ability, stability, and external prediction ability. The contribution rates of electrostatic and steric fields to the combined activity of PBBs were 53.4% and 46.6%, respectively. Four PBB-153 derivatives with significantly improved bioconcentration, long-range transport and the highest infrared signal intensity (the combined activity value of these three parameters decreased) were screened with good environmental stability and functionality. Results validated the accuracy and reliability, and ability of the generated model to realize the simultaneous modification of the three activities of the target molecule. The binding ability of the designed derivatives to food chain biodegradation enzymes increased, thereby verifying the improvement in the bioconcentration. The half-lives of the derivatives in air and their ability to be absorbed by the plants significantly improved compared to the target molecule, further showing that the long-range transport of derivatives was reduced. In addition, the introduction of the –NO group caused the N =O stretching vibration of the derivatives to increase the infrared signal intensity. The present model provides a theoretical design method for the molecular modification of environmentally friendly PBBs.
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Affiliation(s)
- Luze Yang
- . College of New Energy and Environment, Jilin University, Changchun 130012, China;
| | - Minghao Li
- The Moe Key Laboratory of Resources and Environmental Systems Optimization, North China Electric Power University, Beijing 102206, China;
| | - Miao Liu
- . College of New Energy and Environment, Jilin University, Changchun 130012, China;
- Correspondence:
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Chen Q, Mao Z, Gao K, Guo F, Sheng L, Chen Z. Synthesis of 1,2-Dihydroquinazolines via Rearrangement of Indazolium Salts. J Org Chem 2018; 83:8750-8758. [PMID: 30011991 DOI: 10.1021/acs.joc.8b01044] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A convenient synthesis of 1,2-dihydroquinazolines via rearrangement of indazolium salts was described. A mechanistic study using isotope labeling experiment revealed that the rearrangement passes through cleavage of N-N bond/ring opening after basic deprotonation of 2-benzyl in indazolium salts to yield intermediate E, which proceeds in an intramolecular N-nucleophilic addition to form the observed product. Computational analyses imply that the pathway of the rearrangement is determined by the energy barriers of the ring-closing process and the stability of the product.
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Affiliation(s)
- Qian Chen
- School of Chemical Engineering , Southwest Forestry University , Kunming 650224 , China.,School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150080 , China
| | - Zhuqing Mao
- School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150080 , China
| | - Kunqi Gao
- School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150080 , China
| | - Fang Guo
- School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150080 , China
| | - Li Sheng
- School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150080 , China
| | - Zhonglin Chen
- State Key Laboratory of Urban Water Resource and Environment, School of Environment , Harbin Institute of Technology , Harbin 150090 , China
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Ruan ZX, Huangfu DS, Sun PH, Chen WM. Molecular modeling studies on 3,4-dihydroquinazolines as trypanothione reductase inhibitors using 3D-QSAR and docking approaches. Med Chem Res 2013. [DOI: 10.1007/s00044-012-0335-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Park JY, Choi HW, Choi DL, Jang SJ, Kim JH, Lee JH, Choo DJ, Kim J, Lee KT, Lee JY. Evaluation of T-Type Calcium Channel Blockers against Human Pancreatic MIA PaCa-2 Carcinoma Xenografts. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.2.482] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Watanuki S, Matsuura K, Tomura Y, Okada M, Okazaki T, Ohta M, Tsukamoto SI. Synthesis and pharmacological evaluation of 1-alkyl-N-[(1R)-1-(4-fluorophenyl)-2-methylpropyl]piperidine-4-carboxamide derivatives as novel antihypertensive agents. Chem Pharm Bull (Tokyo) 2012; 59:1376-85. [PMID: 22041074 DOI: 10.1248/cpb.59.1376] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We synthesized and evaluated inhibitory activity against T-type Ca(2+) channels for a series of 1-alkyl-N-[(1R)-1-(4-fluorophenyl)-2-methylpropyl]piperidine-4-carboxamide derivatives. Structure-activity relationship studies have revealed that the isopropyl substituent at the benzylic position plays an important role in exerting potent inhibitory activity, and the absolute configuration of the benzylic position was found to be opposite that of mibefradil, which was first launched as a new class of T-type Ca(2+) channel blocker. Oral administration of N-[(1R)-1-(4-fluorophenyl)-2-methylpropyl]-1-[2-(3-methoxyphenyl)ethyl]piperidine-4-carboxamide (17f) lowered blood pressure in spontaneously hypertensive rats without inducing reflex tachycardia, an adverse effect often caused by traditional L-type Ca(2+) channel blockers.
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Affiliation(s)
- Susumu Watanuki
- Drug Discovery Research, Astellas Pharma Inc., Tsukuba, Ibaraki 305–8585, Japan.
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Watanuki S, Matsuura K, Tomura Y, Okada M, Okazaki T, Ohta M, Tsukamoto SI. Synthesis and Pharmacological Evaluation of 2-(1-Alkylpiperidin-4-yl)-N-[(1R)-1-(4-fluorophenyl)-2-methylpropyl]acetamide Derivatives as Novel Antihypertensive Agents. Chem Pharm Bull (Tokyo) 2012; 60:223-34. [DOI: 10.1248/cpb.60.223] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Saito T, Nakano H, Terada H, Kutsumura N, Otani T. Expedient Synthesis of 3,4-Dihydroquinazolines via Tandem Addition — Conjugate Addition Cyclization of Carbodiimides Bearing a Michael Acceptor. HETEROCYCLES 2012. [DOI: 10.3987/com-11-s(p)70] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Synthesis and pharmacological evaluation of 1-alkyl-N-[2-ethyl-2-(4-fluorophenyl)butyl]piperidine-4-carboxamide derivatives as novel antihypertensive agents. Bioorg Med Chem 2011; 19:5628-38. [DOI: 10.1016/j.bmc.2011.07.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Revised: 07/15/2011] [Accepted: 07/16/2011] [Indexed: 11/18/2022]
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Watanuki S, Matsuura K, Tomura Y, Okada M, Okazaki T, Ohta M, Tsukamoto SI. Synthesis and Pharmacological Evaluation of 1-Isopropyl-1,2,3,4-tetrahydroisoquinoline Derivatives as Novel Antihypertensive Agents. Chem Pharm Bull (Tokyo) 2011; 59:1029-37. [DOI: 10.1248/cpb.59.1029] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Vicente J, Chicote MT, Martínez-Martínez AJ, Bautista D, Jones PG. Synthesis of a family of 3-alkyl- or 3-aryl-substituted 1,2-dihydroquinazolinium salts and their isomerization to 4-iminium-1,2,3,4-tetrahydroquinolines. Org Biomol Chem 2011; 9:2279-85. [DOI: 10.1039/c0ob00982b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Giordanetto F, Knerr L, Wållberg A. T-type calcium channels inhibitors: a patent review. Expert Opin Ther Pat 2010; 21:85-101. [PMID: 21087200 DOI: 10.1517/13543776.2011.536532] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
IMPORTANCE OF THE FIELD T-type calcium channels are transmembrane proteins that regulate calcium entry in the cell in a voltage-dependent manner. Intracellular calcium levels are the key to many physiological processes, ranging from neuron firing to cardiac pacemaking. Inhibition of T-type calcium channels is heralded as a potential treatment to peripheral and CNS disorders, including hypertension, heart failure, sleep, epilepsy, drug addiction and neuropathic pain. AREAS COVERED IN THIS REVIEW A comprehensive summary of patent literature disclosing T-type calcium channels inhibitors is provided. WHAT THE READER WILL GAIN In all, 46 patent applications including 15 chemical structure classes are reviewed. Available in vitro, in vivo and clinical results are also discussed. TAKE HOME MESSAGE Several selective T-type calcium channels inhibitors with demonstrated in vitro and in vivo effects, including one Phase I clinical candidate, are now available. While future clinical results will be paramount to assess target validity in patients, these novel inhibitors represent excellent tools to further investigate the role of T-type channels in pathophysiological conditions.
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Myint KZ, Xie XQ. Recent advances in fragment-based QSAR and multi-dimensional QSAR methods. Int J Mol Sci 2010; 11:3846-66. [PMID: 21152304 PMCID: PMC2996787 DOI: 10.3390/ijms11103846] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Revised: 09/17/2010] [Accepted: 09/23/2010] [Indexed: 12/13/2022] Open
Abstract
This paper provides an overview of recently developed two dimensional (2D) fragment-based QSAR methods as well as other multi-dimensional approaches. In particular, we present recent fragment-based QSAR methods such as fragment-similarity-based QSAR (FS-QSAR), fragment-based QSAR (FB-QSAR), Hologram QSAR (HQSAR), and top priority fragment QSAR in addition to 3D- and nD-QSAR methods such as comparative molecular field analysis (CoMFA), comparative molecular similarity analysis (CoMSIA), Topomer CoMFA, self-organizing molecular field analysis (SOMFA), comparative molecular moment analysis (COMMA), autocorrelation of molecular surfaces properties (AMSP), weighted holistic invariant molecular (WHIM) descriptor-based QSAR (WHIM), grid-independent descriptors (GRIND)-based QSAR, 4D-QSAR, 5D-QSAR and 6D-QSAR methods.
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Affiliation(s)
- Kyaw Zeyar Myint
- Department of Computational Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15260, USA; E-Mail:
| | - Xiang-Qun Xie
- Department of Computational Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15260, USA; E-Mail:
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, PA 15260, USA
- Pittsburgh Chemical Methodologies & Library Development (PCMLD) and Pittsburgh Drug Discovery Institute, University of Pittsburgh, Pittsburgh, PA 15260, USA
- * Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-412-383-5276; Fax: +1-412-383-7436
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Voltage-Gated Calcium Channel Antagonists for the Central Nervous System. ANNUAL REPORTS IN MEDICINAL CHEMISTRY 2010. [DOI: 10.1016/s0065-7743(10)45001-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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