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He B, Dong J, Lin HY, Wang MY, Li XK, Zheng BF, Chen Q, Hao GF, Yang WC, Yang GF. Pyrazole-Isoindoline-1,3-dione Hybrid: A Promising Scaffold for 4-Hydroxyphenylpyruvate Dioxygenase Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:10844-10852. [PMID: 31525997 DOI: 10.1021/acs.jafc.9b04917] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The discovery of 4-hydroxyphenylpyruvate dioxygenase (HPPD, EC 1.13.11.27) inhibitors has been an active area of research due to their great potential as herbicides for weed control. Starting from the binding mode of known inhibitors of HPPD, a series of HPPD inhibitors with new molecular scaffolds were designed and synthesized by hybridizing 2-benzoylethen-1-ol and isoindoline-1,3-dione fragments. The results of the in vitro tests indicated that the newly synthesized compounds showed good HPPD inhibitory activity with IC50 values against the recombinant Arabidopsis thaliana HPPD (AtHPPD) ranging from 0.0039 μM to over 1 μM. Most promisingly, compound 4ae, 2-benzyl-5-(5-hydroxy-1,3-dimethyl-1H-pyrazole-4- carbonyl)isoindoline-1,3-dione, showed the highest AtHPPD inhibitory activity with a Ki value of 3.92 nM, making it approximately 10 times more potent than pyrasulfotole (Ki = 44 nM) and slightly more potent than mesotrione (Ki = 4.56 nM). In addition, the cocrystal structure of the AtHPPD-4ae complex was successfully resolved at a resolution of 1.8 Å. The X-ray diffraction analysis indicated that the two carbonyl groups of 2-benzoylethen-1-ol formed a bidentate chelating interaction with the metal ion, while the isoindoline-1,3-dione moiety formed pronounced π-π stacking interactions with Phe381 and Phe424. Moreover, water-mediated hydrogen bonding interactions were observed between Asn282 and the nitrogen atoms of the pyrazole ring of 4ae. The above results showed that the pyrazole-isoindoline-1,3-dione hybrid is a promising scaffold for developing HPPD inhibitors.
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Affiliation(s)
- Bo He
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, and Chemical Biology Center, College of Chemistry , Central China Normal University , Wuhan 430079 , P.R. China
| | - Jin Dong
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, and Chemical Biology Center, College of Chemistry , Central China Normal University , Wuhan 430079 , P.R. China
| | - Hong-Yan Lin
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, and Chemical Biology Center, College of Chemistry , Central China Normal University , Wuhan 430079 , P.R. China
| | - Meng-Yao Wang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, and Chemical Biology Center, College of Chemistry , Central China Normal University , Wuhan 430079 , P.R. China
| | - Xian-Kai Li
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, and Chemical Biology Center, College of Chemistry , Central China Normal University , Wuhan 430079 , P.R. China
| | - Bai-Feng Zheng
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, and Chemical Biology Center, College of Chemistry , Central China Normal University , Wuhan 430079 , P.R. China
| | - Qiong Chen
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, and Chemical Biology Center, College of Chemistry , Central China Normal University , Wuhan 430079 , P.R. China
| | - Ge-Fei Hao
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, and Chemical Biology Center, College of Chemistry , Central China Normal University , Wuhan 430079 , P.R. China
| | - Wen-Chao Yang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, and Chemical Biology Center, College of Chemistry , Central China Normal University , Wuhan 430079 , P.R. China
| | - Guang-Fu Yang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, and Chemical Biology Center, College of Chemistry , Central China Normal University , Wuhan 430079 , P.R. China
- Collaborative Innovation Center of Chemical Science and Engineering , Nankai University , Tianjin 300071 , P.R. China
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Zagotto G, Gianoncelli A, Sissi C, Marzano C, Gandin V, Pasquale R, Capranico G, Ribaudo G, Palumbo M. Novel ametantrone-amsacrine related hybrids as topoisomerase IIβ poisons and cytotoxic agents. Arch Pharm (Weinheim) 2014; 347:728-37. [PMID: 25042690 DOI: 10.1002/ardp.201400111] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 05/07/2014] [Accepted: 05/28/2014] [Indexed: 11/09/2022]
Abstract
The precise definition of the structural requirements for effective topoisomerase II poisoning by drug molecules is still an elusive issue. In the attempt to better define a pharmacophoric pattern, we prepared several conjugates combining the chemical features of two well-known topoisomerase II poisons, amsacrine and ametantrone. Indeed, an appropriate fusion geometry, which entails the anthracenedione moiety of ametantrone appropriately connected to the methanesulfonamidoaniline side chain of amsacrine, elicits DNA-intercalating properties, the capacity to inhibit the human topoisomerase IIβ isoform, and cytotoxic activity resembling that of the parent compounds. In addition, the properties of the lateral groups linked to the anthracenedione group play an important role in modulating DNA binding and cell cytotoxicity. Among the compounds tested, 10, 11, and 19 appear to be promising for further development.
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Affiliation(s)
- Giuseppe Zagotto
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
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Ben-Cherif W, Gharbi R, Sebai H, Dridi D, Boughattas NA, Ben-Attia M. Neuropharmacological screening of two 1,5-benzodiazepine compounds in mice. C R Biol 2010; 333:214-9. [PMID: 20338539 DOI: 10.1016/j.crvi.2009.09.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2009] [Revised: 09/24/2009] [Accepted: 09/26/2009] [Indexed: 10/19/2022]
Abstract
This work investigates whether the two 1,5-benzodiazepine compounds: 4-(2-hydroxyphenyl)-1,5-benzodiazepin-2-one (RG0501) and Benzopyrano [4,3-c] 1,5-benzodiazepine (RG0502) have any neuropharmacological activities. Diazepam and Flunitrazepam were used as drug references. The investigational 1,5-BDZ were tested in vivo for potentiating hexobarbital-induced sleep and pentylenetetrazole (PTZ)-induced seizures. Our study demonstrated that the increase of sleep duration was significantly higher with RG0501 as compared to RG0502. However, RG0502 anticonvulsant effect was more pronounced than that of RG0501 in the range dose of 6.25-37.5 mg.kg(-1). From the 50 mg.kg(-1) dose, RG0502 offered a protection against clonic-tonic seizures as well as lethality (p< or =0.05). The results showed that the required doses to obtain a pharmacological activity were more than those of the references. This difference could be related to the lack of specific substituants responsible for the pharmacological activity in the tested compounds.
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Affiliation(s)
- Wafa Ben-Cherif
- Laboratoire de pharmacologie, faculté de médecine de Monastir, 5019 Monastir, Tunisia
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