1
|
Liu D, Bi Q, Zhang J, Gao Y, Luo C, Tian H, He J, Zhang L. Novel heptafluoroisopropyl N-phenylpyrazole aryl amides containing cyanoalkyl groups: Design, synthesis, insecticidal activity, docking studies and theoretical calculations. Bioorg Chem 2024; 143:107024. [PMID: 38103331 DOI: 10.1016/j.bioorg.2023.107024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/28/2023] [Accepted: 12/06/2023] [Indexed: 12/19/2023]
Abstract
To discover and develop new insecticides of the phenylpyrazole class, a series of heptafluoroisopropyl N-phenylpyrazole aryl amide compounds bearing cyanoalkyl groups were synthesized based on the lead compound nicofluprole. Their structures were established by HRMS, 1H NMR and 13C NMR. Bioassay results indicated that several of these compounds exhibited remarkable acaricidal and insecticidal activities. The LC50 values for compounds A1, A2 and A5 against Tetranychus cinnabarinus (T. cinnabarinus) were 1.7-4.2 times lower than that of nicofluprole (3.124 mg/L). Compounds A1, A2, A4 and A7 against Myzus persicae (M. persicae) had LC50 values of 0.261, 1.292, 0.589 and 1.133 mg/L respectively, exceeding that of nicofluprole (LC50 = 4.200 mg/L). Some compounds also demonstrated good insecticidal activity against Plutella xylostella (P. xylostella). For example, compounds A1-A4, A6, and A7 had a mortality rate of 100 % at a low concentration of 1.25 mg/L, which was comparable to nicofluprole (93.3%). Compound A1 exhibited insecticidal activity against Chilo suppressalis (C. suppressalis) with an LC50 value of 2.271 mg/L, which was superior to both nicofluprole (6.021 mg/L) and the positive control broflanilide (6.895 mg/L). Taking compound A5 as a representative, we tested the insecticidal activity against Aphis fabae (A. fabae), Aphis gossypii Glover (A. gossypii Glover), Nilaparvata lugens (N. lugens) and Laodelphax striatellus (L. striatellus) at 10 mg/L, and our results revealed that compound A5 exhibited broad-spectrum insecticidal activity. Molecular docking studies suggested that A1 had a lower binding energy of -7.764 kcal/mol with the P. xylostella gamma-aminobutyric acid receptors (GABAR). Density functional theory calculations (DFT) provided insights into the design of new compounds. This research suggested that the novel phenylpyrazoles featuring cyanoalkyl moieties in this work hold potential as novel insecticides for further research and development.
Collapse
Affiliation(s)
- Dongdong Liu
- Institute of Functional Molecules, Shenyang University of Chemical Technology, Liaoning Province Key Laboratory of Green Functional Molecular Design and Development, Shenyang Key Laboratory of Targeted Pesticides, Shenyang 110142, China; School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
| | - Qingjie Bi
- Institute of Functional Molecules, Shenyang University of Chemical Technology, Liaoning Province Key Laboratory of Green Functional Molecular Design and Development, Shenyang Key Laboratory of Targeted Pesticides, Shenyang 110142, China
| | - Jing Zhang
- Institute of Functional Molecules, Shenyang University of Chemical Technology, Liaoning Province Key Laboratory of Green Functional Molecular Design and Development, Shenyang Key Laboratory of Targeted Pesticides, Shenyang 110142, China; School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China; Metisa Biotechnology Co., Ltd., Nanning 530000, China.
| | - Yixing Gao
- Institute of Functional Molecules, Shenyang University of Chemical Technology, Liaoning Province Key Laboratory of Green Functional Molecular Design and Development, Shenyang Key Laboratory of Targeted Pesticides, Shenyang 110142, China
| | - Chunfen Luo
- Metisa Biotechnology Co., Ltd., Nanning 530000, China
| | - Huan Tian
- Institute of Functional Molecules, Shenyang University of Chemical Technology, Liaoning Province Key Laboratory of Green Functional Molecular Design and Development, Shenyang Key Laboratory of Targeted Pesticides, Shenyang 110142, China
| | - Juan He
- Institute of Functional Molecules, Shenyang University of Chemical Technology, Liaoning Province Key Laboratory of Green Functional Molecular Design and Development, Shenyang Key Laboratory of Targeted Pesticides, Shenyang 110142, China
| | - Lixin Zhang
- Institute of Functional Molecules, Shenyang University of Chemical Technology, Liaoning Province Key Laboratory of Green Functional Molecular Design and Development, Shenyang Key Laboratory of Targeted Pesticides, Shenyang 110142, China; School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China; Metisa Biotechnology Co., Ltd., Nanning 530000, China.
| |
Collapse
|
2
|
Sun C, Zhang F, Zhang H, Li P, Jiang L. Design, Synthesis, Fungicidal Activity and Molecular Docking Study of Novel 2-(1-Methyl-1 H-pyrazol-4-yl)pyrimidine-4-carboxamides. CHINESE J ORG CHEM 2023. [DOI: 10.6023/cjoc202206008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
|
3
|
Sun C, Zhang S, Qian P, Li Y, Ren W, Deng H, Jiang L. Synthesis and fungicidal activity of novel benzimidazole derivatives bearing pyrimidine-thioether moiety against Botrytis cinerea. PEST MANAGEMENT SCIENCE 2021; 77:5529-5536. [PMID: 34378332 DOI: 10.1002/ps.6593] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Accepted: 08/11/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Botrytis cinerea is a serious plant fungus and strongly affects the yield and quality of crops. The main control strategy is the employment of fungicides. To research for efficient fungicide with novel structure, a series of novel benzimidazole derivatives bearing pyrimidine and thioether moieties were designed and synthesized. RESULTS Some target compounds such as 4h, 4i, 4k, 4l, 4m, 4s, 4t and 4u exhibited notable fungicidal activities, with half maximal effective concentration (EC50 ) values in the range 0.13-0.24 μg mL-1 , which means that their activities were comparable or higher than that of carbendazim (EC50 = 0.21 μg mL-1 ). Among them, N-(4-fluorophenyl)-2-((4-(1H-benzimidazol-2-yl)-6-(4-methoxyphenyl) pyrimidin-2-yl)thio)acetamide (4m) displayed the best activity (EC50 = 0.13 μg mL-1 ). Molecular electrostatic potential analysis of 4m elucidated that the NH moiety of benzimidazole ring was located in the positive potential region and may generate hydrogen bond with target amino acid residue. Molecular docking analysis revealed that there was one hydrogen bond and one 𝜋-𝜋 interaction between 4m and target protein. CONCLUSIONS This study demonstrated that the benzimidazole derivatives bearing pyrimidine and thioether moieties can be further optimized as a lead compound for the control of B. cinerea. The combination of molecular electrostatic potential and molecular docking analyses may provide a valuable reference for studying the interaction between the ligand and target protein. © 2021 Society of Chemical Industry.
Collapse
Affiliation(s)
- Changxing Sun
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, P.R. China
| | - Shuai Zhang
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, P.R. China
| | - Ping Qian
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, P.R. China
| | - Ying Li
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, P.R. China
| | - Wansheng Ren
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, P.R. China
| | - Hao Deng
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, P.R. China
| | - Lin Jiang
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, P.R. China
| |
Collapse
|
4
|
2-(2-Amino-6-methylpyrimidin-4-yl)-4-arylmethylidene- 5-methyl-2,4-dihydro-3H-pyrazol-3-ones: Design, synthesis, structure, in vitro anti-tubercular activity, and molecular docking study. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130863] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
5
|
Sun C, Zhang S, Qian P, Li Y, Deng H, Ren W, Jiang L. Synthesis and fungicidal activity of novel 2-(2-alkylthio-6-phenylpyrimidin-4-yl)-1H-benzimidazoles. Bioorg Med Chem Lett 2021; 47:128210. [PMID: 34157391 DOI: 10.1016/j.bmcl.2021.128210] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 06/05/2021] [Accepted: 06/15/2021] [Indexed: 10/21/2022]
Abstract
With the aim of exploring new benzimidazole derivative with high fungicidal activity, a series of novel 2-(2-(alkylthio)-6-phenylpyrimidin-4-yl)-1H-benzimidazoles were designed and synthesized, and their in vitro fungicidal activities were evaluated. Compounds 5a, 5f, 5g, 5h, 5i and 5l exhibited excellent fungicidal activities against Botrytis cinerea, and 5c, 5f, 5h, 5i and 5l displayed notable fungicidal activities against Sclerotinia sclerotiorum. Among them, compound 5i (R1 = fluorine, R2 = benzyl) displayed the best activity towards the two tested fungi. Docking study of 5i with β-tubulin protein revealed that the NH moiety of benzimidazole ring generated a hydrogen bond with Gln-11 residue, and the fluorine atom of benzene ring formed a hydrogen bond with Tyr-208 residue, respectively; the benzene ring of Tyr-222 and the pyrimidine ring of 5i yielded a π-π interaction. The molecular electrostatic potential analysis elucidated the nitrogen atom of benzimidazole ring, fluorine atom of benzene ring and sulfur atom of thioether moiety were located in the negative potential regions, whereas some hydrogen atoms of benzene, benzimidazole and pyrimidine rings were located in the positive potential regions. This analysis demonstrated the reason why 5i can form hydrogen bonds with amino acid residues of target protein.
Collapse
Affiliation(s)
- Changxing Sun
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an 271018, China
| | - Shuai Zhang
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an 271018, China
| | - Ping Qian
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an 271018, China
| | - Ying Li
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an 271018, China
| | - Hao Deng
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an 271018, China
| | - Wansheng Ren
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an 271018, China
| | - Lin Jiang
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an 271018, China.
| |
Collapse
|
6
|
Yang Z, Li Q, Yin J, Liu R, Tian H, Duan L, Li Z, Wang B, Tan W, Liu S. Design, synthesis and mode of action of novel 3-chloro-6-pyrazolyl picolinate derivatives as herbicide candidates. PEST MANAGEMENT SCIENCE 2021; 77:2252-2263. [PMID: 33411985 DOI: 10.1002/ps.6250] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 11/14/2020] [Accepted: 01/07/2021] [Indexed: 05/26/2023]
Abstract
BACKGROUND Picolinate/picolinic acid compounds are an important class of synthetic auxin herbicides. To explore the herbicidal activity of 6-pyrazolyl picolinate compounds, a series of 3-chloro-6-pyrazolyl-picolinate derivatives was designed and synthesized. RESULTS Twenty-five 3-chloro-6-pyrazolyl-picolinate derivatives synthesized were tested for herbicidal activity and the IC50 value of compound c5 to the growth of Arabidopsis thaliana root was 27 times lower than that of the commercial herbicide clopyralid. Compound c5 displayed better post-emergence herbicidal activity and broader (Picloram, Clopyralid, Aminopyralid) herbicidal spectrum at a dosage of 400 g ha-1 in comparison with clopyralid; it also was safe to wheat and maize at this dosage. Arabidopsis thaliana phenotypes and expression of auxin-response genes demonstrated that compound c5 might be a novel auxin-type herbicide. Molecular docking analyses revealed that compound c5 had stronger binding ability to receptor AFB5 (auxin signaling F-box protein 5) than clopyralid. CONCLUSION These 6-pyrazolyl picolinate compounds could be used as potential lead structures for the discovery of a novel synthetic auxin herbicide. © 2021 Society of Chemical Industry.
Collapse
Affiliation(s)
- Zhikun Yang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, China
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Qibo Li
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, China
| | - Jiaming Yin
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Ruiquan Liu
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, China
| | - Hao Tian
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Liusheng Duan
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Zhaohu Li
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Baomin Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Weiming Tan
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Shangzhong Liu
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, China
| |
Collapse
|
7
|
Bhaskaruni SV, Maddila S, Gangu KK, Jonnalagadda SB. A review on multi-component green synthesis of N-containing heterocycles using mixed oxides as heterogeneous catalysts. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2017.09.016] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
|
8
|
Söderström M, Zamaratski E, Odell LR. BF
3
·SMe
2
for Thiomethylation, Nitro Reduction and Tandem Reduction/SMe Insertion of Nitrogen Heterocycles. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900503] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Marcus Söderström
- Department of Medicinal Chemistry Uppsala University Uppsala, Biomedical Center P. O. Box 574 75123 Uppsala Sweden
| | - Edouard Zamaratski
- Department of Medicinal Chemistry Uppsala University Uppsala, Biomedical Center P. O. Box 574 75123 Uppsala Sweden
| | - Luke R. Odell
- Department of Medicinal Chemistry Uppsala University Uppsala, Biomedical Center P. O. Box 574 75123 Uppsala Sweden
| |
Collapse
|
9
|
Wu W, Chen M, Wang R, Tu H, Yang M, Ouyang G. Novel pyrimidine derivatives containing an amide moiety: design, synthesis, and antifungal activity. CHEMICAL PAPERS 2018. [DOI: 10.1007/s11696-018-0583-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
10
|
Novel Pyrazole-Hydrazone Derivatives Containing an Isoxazole Moiety: Design, Synthesis, and Antiviral Activity. Molecules 2018; 23:molecules23071798. [PMID: 30037021 PMCID: PMC6100116 DOI: 10.3390/molecules23071798] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 07/17/2018] [Accepted: 07/18/2018] [Indexed: 11/17/2022] Open
Abstract
In this study, a series of novel pyrazole-hydrazone derivatives containing an isoxazole moiety were synthesized. Antiviral bioassays indicated that some of the title compounds exhibited better in vivo antiviral activities against tobacco mosaic virus (TMV). In particular, compounds 6a, 6c and 6q exhibited the best curative activity, protection activity, and inactivation activity against TMV, respectively, which were superior to those of Ningnanmycin. This study demonstrated that this series of novel pyrazole-hydrazone derivatives containing an isoxazole amide moiety could effectively control TMV.
Collapse
|
11
|
Steroidal[17,16-d]pyrimidines derived from dehydroepiandrosterone: A convenient synthesis, antiproliferation activity, structure-activity relationships, and role of heterocyclic moiety. Sci Rep 2017; 7:44439. [PMID: 28290501 PMCID: PMC5349525 DOI: 10.1038/srep44439] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 02/08/2017] [Indexed: 12/24/2022] Open
Abstract
A series of steroidal[17,16-d]pyrimidines derived from dehydroepiandrosterone were designed and prepared by a convenient heterocyclization reaction. The in vitro anticancer activities for these obtained compounds were evaluated against human cancer cell lines (HepG2, Huh-7, and SGC-7901), which demonstrated that some of these heterocyclic pyrimidine derivatives exhibited significantly good cytotoxic activities against all tested cell lines compared with 5-fluorouracil (5-FU), especially, compound 3b exhibited high potential growth inhibitory activities against all tested cell lines with the IC50 values of 5.41 ± 1.34, 5.65 ± 1.02 and 10.64 ± 1.49 μM, respectively, which might be used as promising lead scaffold for discovery of novel anticancer agents.
Collapse
|
12
|
Zhang TT, Wang PY, Zhou J, Shao WB, Fang HS, Zhou X, Wu ZB. Antibacterial and Antifungal Activities of 2-(substituted ether)-5-(1-phenyl-5-(trifluoromethyl)-1H
-pyrazol-4-yl)-1,3,4-oxadiazole Derivatives. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2820] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Teng-Teng Zhang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education; Center for R&D of Fine Chemicals of Guizhou University; Guiyang Huaxi District 550025 China
| | - Pei-Yi Wang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education; Center for R&D of Fine Chemicals of Guizhou University; Guiyang Huaxi District 550025 China
| | - Jian Zhou
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education; Center for R&D of Fine Chemicals of Guizhou University; Guiyang Huaxi District 550025 China
| | - Wu-Bin Shao
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education; Center for R&D of Fine Chemicals of Guizhou University; Guiyang Huaxi District 550025 China
| | - He-Shu Fang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education; Center for R&D of Fine Chemicals of Guizhou University; Guiyang Huaxi District 550025 China
| | - Xiang Zhou
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education; Center for R&D of Fine Chemicals of Guizhou University; Guiyang Huaxi District 550025 China
| | - Zhi-Bing Wu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education; Center for R&D of Fine Chemicals of Guizhou University; Guiyang Huaxi District 550025 China
| |
Collapse
|
13
|
Kamijo S, Kamijo K, Murafuji T. Synthesis of Alkylated Pyrimidines via Photoinduced Coupling Using Benzophenone as a Mediator. J Org Chem 2017; 82:2664-2671. [PMID: 28194979 DOI: 10.1021/acs.joc.6b03058] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The synthesis of alkylated pyrimidines was achieved via benzophenone-mediated photoinduced coupling between saturated heterocycles and sulfonylpyrimidines. The pyrimidine ring was selectively introduced at the nonacidic C(sp3)-H bond proximal to heteroatoms including oxygen, nitrogen, and sulfur. This is a coupling reaction mediated solely by photoexcited benzophenone, an organic molecule, without the aid of any metallic catalysts or reagents.
Collapse
Affiliation(s)
- Shin Kamijo
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University , Yamaguchi 753-8512, Japan
| | - Kaori Kamijo
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University , Yamaguchi 753-8512, Japan
| | - Toshihiro Murafuji
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University , Yamaguchi 753-8512, Japan
| |
Collapse
|
14
|
Wang D, Fang Y, Wang H, Xu X, Liu J, Zhang H. Synthesis and evaluation of novel F-18-labeled pyrimidine derivatives: potential FAK inhibitors and PET imaging agents for cancer detection. RSC Adv 2017. [DOI: 10.1039/c6ra28851k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Compound [18F]-8a exhibited good in vivo biodistribution data in mice bearing S180 tumor. And the microPET imaging study of [18F]-8a in S180 tumor-bearing mice was also preformed, which illustrated that the uptake in S180 tumor at 60 min post-injection of [18F]-8a was obvious.
Collapse
Affiliation(s)
- Dawei Wang
- Key Laboratory of Radiopharmaceuticals of Ministry of Education
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- People's Republic of China
| | - Yu Fang
- Key Laboratory of Radiopharmaceuticals of Ministry of Education
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- People's Republic of China
| | - Hang Wang
- Key Laboratory of Radiopharmaceuticals of Ministry of Education
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- People's Republic of China
| | - Xingyu Xu
- Key Laboratory of Radiopharmaceuticals of Ministry of Education
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- People's Republic of China
| | - Jianping Liu
- Key Laboratory of Radiopharmaceuticals of Ministry of Education
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- People's Republic of China
| | - Huabei Zhang
- Key Laboratory of Radiopharmaceuticals of Ministry of Education
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- People's Republic of China
| |
Collapse
|
15
|
Synthesis and in vivo nematocidal evaluation of novel 3-(trifluoromethyl)-1H-pyrazole-4-carboxamide derivatives. Front Chem Sci Eng 2016. [DOI: 10.1007/s11705-016-1595-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
16
|
Synthesis and Herbicidal Activity of 5-Heterocycloxy-3-methyl-1-substituted-1H-pyrazoles. Molecules 2015; 21:E39. [PMID: 26712728 PMCID: PMC6273275 DOI: 10.3390/molecules21010039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 12/09/2015] [Accepted: 12/11/2015] [Indexed: 11/17/2022] Open
Abstract
With the objective of finding valuable herbicidal candidates, a series of new 5-heterocycloxy-3-methyl-1-substituted-1H-pyrazoles were synthesized and their herbicidal activities were evaluated. The bioassay results showed that some compounds exhibited excellent herbicidal activities at the concentration of 100 mg/L, and compound 5-chloro-2-((3-methyl-1-(2,2,2-trifluoroethyl)-1H-pyrazol-5-yl)oxy)pyrimidine showed bleaching activity to green weeds. In greenhouse conditions, this compound also showed excellent post-emergence herbicidal effect against Digitaria sanguinalis L. at the dosage of 750 g a. i. ha−1.
Collapse
|