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Liang L, Yu S, Li Q, Wang X, Wang D, Xi Z. Design, synthesis, and molecular simulation studies of N-phenyltetrahydroquinazolinones as protoporphyrinogen IX oxidase inhibitors. Bioorg Med Chem 2021; 39:116165. [PMID: 33915477 DOI: 10.1016/j.bmc.2021.116165] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/13/2021] [Accepted: 04/16/2021] [Indexed: 02/05/2023]
Abstract
Discovering new protoporphyrinogen oxidase (PPO, EC 1.3.3.4) inhibitors is a promising direction for agrochemical research. Herein, we reported the discovery and in silico structure-guided optimization of N-phenyltetrahydroquinazolinones 1 and 2 as new PPO inhibitors. Most of the obtained compounds 1 and 2 exhibited significantly enhanced Nicotiana tabacum PPO (NtPPO) inhibitory potency than that of flumioxazin. Promisingly, 1-(tert-butoxy)-1-oxopropan-2-yl 2-chloro-4-fluoro-5-(4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl)benzoate, 2o, with a Ki value of 4 nM, showed ten folds more enhanced NtPPO-inhibiting potency than flumioxazin. Additionally, compounds 2b and 2i showed a broad spectrum of broadleaf weeds control at 37.5-150 g ai/ha, and selective for wheat at 150 g ai/ha in the post-emergent application. The molecular simulation studies revealed the vital basis between N-phenyltetrahydroquinazolinones and NtPPO. The present work indicated that the N-phenyltetrahydroquinazolinone motif might be a potential scaffold for herbicide discovery.
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Affiliation(s)
- Lu Liang
- State Key Laboratory of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, and Department of Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, PR China
| | - Shuyi Yu
- State Key Laboratory of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, and Department of Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, PR China
| | - Qian Li
- State Key Laboratory of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, and Department of Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, PR China
| | - Xia Wang
- State Key Laboratory of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, and Department of Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, PR China
| | - Dawei Wang
- State Key Laboratory of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, and Department of Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, PR China
| | - Zhen Xi
- State Key Laboratory of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, and Department of Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, PR China.
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