1
|
Haggag HS, Aboukhatwa SM, Nafie MS, Paul A, Sharafeldin N, Oliver AW, El-Hamamsy MH. Design and synthesis of quinazolin-4-one derivatives as potential anticancer agents and investigation of their interaction with RecQ helicases. Bioorg Chem 2024; 144:107086. [PMID: 38219478 DOI: 10.1016/j.bioorg.2023.107086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 12/27/2023] [Accepted: 12/30/2023] [Indexed: 01/16/2024]
Abstract
The upregulation of RecQ helicases has been associated with cancer cell survival and resistance to chemotherapy, making them appealing targets for therapeutic intervention. In this study, twenty-nine novel quinazolinone derivatives were designed and synthesized. The anti-proliferative activity of all compounds was evaluated against 60 cancer cell lines at the National Cancer Institute Developmental Therapeutic Program, with six compounds (11f, 11g, 11k, 11n, 11p, and 11q) being promoted to a five-dose screen. Compound 11g demonstrated high cytotoxic activity against all examined cell lines. The compounds were further assayed for Bloom syndrome (BLM) helicase inhibition, where 11g, 11q, and 11u showed moderate activity. These compounds were counter-screened against WRN and RECQ1 helicases, where 11g moderately inhibited both enzymes. An ATP competition assay confirmed that the compounds bound to the ATP site of RecQ helicases, and molecular docking simulations were used to study the binding mode within the active site of BLM, WRN, and RECQ1 helicases. Compound 11g induced apoptosis in both HCT-116 and MDA-MB-231 cell lines, but also caused an G2/M phase cell cycle arrest in HCT-116 cells. This data revealed the potential of 11g as a modulator of cell cycle dynamics and supports its interaction with RecQ helicases. In addition, compound 11g displayed non-significant toxicity against FCH normal colon cells at doses up to 100 µM, which confirming its high safety margin and selectivity on cancer cells. Overall, these findings suggest compound 11g as a potential pan RecQ helicase inhibitor with high anticancer potency and a favorable safety margin and selectivity.
Collapse
Affiliation(s)
- Hanan S Haggag
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tanta University, Tanta 31527, Egypt
| | - Shaimaa M Aboukhatwa
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tanta University, Tanta 31527, Egypt; Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago 60608, IL, USA
| | - Mohamed S Nafie
- Department of Chemistry, College of Sciences, University of Sharjah, (P. O. Box 27272), Sharjah, United Arab Emirates; Chemistry Department (Biochemistry Program), Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
| | - Anju Paul
- Genome Damage and Stability Centre, Science Park Road, University of Sussex Falmer, Brighton BN1 9RQ, UK
| | - Nabaweya Sharafeldin
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tanta University, Tanta 31527, Egypt
| | - Antony W Oliver
- Genome Damage and Stability Centre, Science Park Road, University of Sussex Falmer, Brighton BN1 9RQ, UK
| | - Mervat H El-Hamamsy
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tanta University, Tanta 31527, Egypt
| |
Collapse
|
2
|
Zhong CR, Zhang YH, Yao G, Zhu HL, Hu YD, Zeng ZG, Liao CZ, He HT, Luo YT, Xiong J. Synthesis of Imidazo[1,2- a]pyridine-Fused 1,3-Benzodiazepine Derivatives with Anticancer Activity via a One-Pot Cascade GBB-3CR/Pd(II)-Catalyzed Azide-Isocyanide Coupling/Cyclization Process. J Org Chem 2023; 88:13125-13134. [PMID: 37616489 DOI: 10.1021/acs.joc.3c01341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/26/2023]
Abstract
A new one-pot synthesis of imidazo[1,2-a]pyridine-fused 1,3-benzodiazepine derivatives via a sequential GBB-3CR/Pd(II)-catalyzed azide-isocyanide coupling/cyclization process was developed. The Groebke-Blackburn-Bienaymé three-component reactions (GBB-3CR) of 2-aminopyridine, 2-azidobenzaldehydes, and isocyanides in the presence of a catalytic amount of p-toluenesulfonic acid gave azide intermediates without separation. The reaction was followed by using another molecule of isocyanides to produce imidazo[1,2-a]pyridine-fused 1,3-benzodiazepine derivatives in good yields by the Pd(II)-catalyzed azide-isocyanide coupling/cyclization reaction. The synthetic approach produces novel nitrogen-fused polycyclic heterocycles under mild reaction conditions. The preliminary biological evaluation demonstrated that compound 6a inhibited glioma cells efficiently, suggesting potentially broad applications of the approach for synthesis and medicinal chemistry.
Collapse
Affiliation(s)
- Cheng-Ran Zhong
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| | - Yang-Hong Zhang
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| | - Gang Yao
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| | - Hai-Li Zhu
- School of Basic Medical Sciences, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| | - Yin-Di Hu
- School of Basic Medical Sciences, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| | - Zhi-Gang Zeng
- School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| | - Chang-Zhou Liao
- School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| | - Hui-Ting He
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| | - Ya-Ting Luo
- School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| | - Jun Xiong
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| |
Collapse
|
3
|
Sarantou A, Varvounis G. 1-[2-(1H-Pyrrole-2-carbonyl)phenyl]-3-(4-methoxyphenyl)urea. Molbank 2022; 2023:M1531. [DOI: 10.3390/m1531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
For the synthesis of 1-(2-(1H-pyrrole-2-carbonyl)phenyl)-3-(4-methoxyphenyl)urea, the final product, two different methods were used, in one or two steps, from (2-aminophenyl)(1H-pyrrol-2-yl)methanone. The one-step synthesis entailed a carbonylation reaction with 1/3 equivalent of triphosgene in the presence of two equivalents of trimethylamine, followed by the addition of 4-methoxyaniline to the in situ generated aryl isocyanate. The two-step synthesis required first the preparation of phenyl(2-(1H-pyrrole-2-carbonyl)phenyl)carbamate and then a substitution reaction by 4-methoxyaniline. The first method produced the final product in 72% yield, which was the best yield. The structure of the final product was confirmed by FTIR, UV-VIS, 1H and 13C NMR spectroscopy and high resolution mass spectrometry.
Collapse
|
4
|
Affiliation(s)
- Yohan Malki
- IBMM Université de Montpellier CNRS ENSCM Montpellier France
| | | | | |
Collapse
|
5
|
Song X, Zhou Q, Zhao J, Jiang Y, Zhang X, Zhang X, Fan X. Synthesis of 1,3-Benzodiazepines through [5 + 2] Annulation of N-Aryl Amidines with Propargylic Esters. Org Lett 2020; 22:9506-9512. [PMID: 33258365 DOI: 10.1021/acs.orglett.0c03515] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In this paper, an efficient synthesis of functionalized 1,3-benzodiazepines through an unprecedented [5 + 2] annulation of N-aryl amidines with propargylic esters is presented. The reactions proceed through Rh(III)-catalyzed C(sp2)-H alkenylation followed by annulation and deacetoxylation along with cascade C-H/N-H/C-O bond cleavage and C-C/C-N bond formation. Furthermore, the cytotoxicity of selected products against several human cancer cell lines was tested, which demonstrated their good potential for pharmaceutical applications.
Collapse
Affiliation(s)
- Xia Song
- School of Environment, School of Chemistry and Chemical Engineering, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control and Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Normal University, Xinxiang, Henan 453007, China
| | - Qianting Zhou
- School of Environment, School of Chemistry and Chemical Engineering, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control and Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Normal University, Xinxiang, Henan 453007, China
| | - Jie Zhao
- School of Environment, School of Chemistry and Chemical Engineering, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control and Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yuqin Jiang
- School of Environment, School of Chemistry and Chemical Engineering, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control and Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xiaopeng Zhang
- School of Environment, School of Chemistry and Chemical Engineering, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control and Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- School of Environment, School of Chemistry and Chemical Engineering, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control and Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- School of Environment, School of Chemistry and Chemical Engineering, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control and Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Normal University, Xinxiang, Henan 453007, China
| |
Collapse
|
6
|
Rotas G, Varvounis G. Tunable reactivity of triphosgene-triethylamine: A study on the synthesis of pyrrole-based tricyclics. Tetrahedron 2020; 76:131527. [DOI: 10.1016/j.tet.2020.131527] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
7
|
Sasaki I, Yamasaki N, Kasai Y, Imagawa H, Yamamoto H. A synthetic protocol for (−)-ketorolac; development of asymmetric gold(I)-catalyzed cyclization of allyl alcohol with pyrrole ring core. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151564] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
8
|
Martínez-Yáñez N, Suárez J, Cajaraville A, Varela JA, Saá C. Rh(III)-Catalyzed [5 + 2] Oxidative Annulation of Cyclic Arylguanidines and Alkynes to 1,3-Benzodiazepines. A Striking Mechanistic Proposal from DFT. Org Lett 2019; 21:1779-1783. [DOI: 10.1021/acs.orglett.9b00354] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nuria Martínez-Yáñez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Jaime Suárez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Ana Cajaraville
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Jesús A. Varela
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Carlos Saá
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| |
Collapse
|
9
|
Zhang Y, Shao Y, Gong J, Zhu J, Cheng T, Chen J. Selenium-Catalyzed Oxidative C–H Amination of (E)-3-(Arylamino)-2-styrylquinazolin-4(3H)-ones: A Metal-Free Synthesis of 1,2-Diarylpyrazolo[5,1-b]quinazolin-9(1H)-ones. J Org Chem 2019; 84:2798-2807. [DOI: 10.1021/acs.joc.8b03179] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Yetong Zhang
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yinlin Shao
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Julin Gong
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Jianghe Zhu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Tianxing Cheng
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Jiuxi Chen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| |
Collapse
|
10
|
Qurban J, Elsherbini M, Alharbi H, Wirth T. Synthesis, characterisation, and reactivity of novel pseudocyclic hypervalent iodine reagents with heteroaryl carbonyl substituents. Chem Commun (Camb) 2019; 55:7998-8000. [DOI: 10.1039/c9cc03905h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New heteroatom-containing pseudocyclic iodanes are being introduces as alternatives to the Koser reagent.
Collapse
Affiliation(s)
- Jihan Qurban
- School of Chemistry
- Cardiff University
- Cardiff CF10 3AT
- UK
| | | | - Haifa Alharbi
- School of Chemistry
- Cardiff University
- Cardiff CF10 3AT
- UK
| | - Thomas Wirth
- School of Chemistry
- Cardiff University
- Cardiff CF10 3AT
- UK
| |
Collapse
|
11
|
Yan L, Wang H, Chen Y, Li Z, Pei Y. Synthesis and structure-activity relationship study of diaryl[d,f][1,3]diazepines as potential anti-cancer agents. Mol Divers 2018; 22:323-33. [PMID: 29299857 DOI: 10.1007/s11030-017-9805-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Accepted: 12/14/2017] [Indexed: 10/18/2022]
Abstract
We herein report the synthesis, biological activity and preliminary structure-activity relationships of a series of diaryl[1,3]diazepines. These compounds were able to inhibit the proliferation of many cancer cell lines, such as HeLa, MCF-7, SGC7901 and A549. When HeLa cells were treated with lead compounds 7j and 7k at 3 [Formula: see text] concentration, cell arrest was observed in the G2/M phase.
Collapse
|
12
|
Qiao R, Ye L, Hu K, Yu S, Yang W, Liu M, Chen J, Ding J, Wu H. Copper-catalyzed C–O bond cleavage and cyclization: synthesis of indazolo[3,2-b]quinazolinones. Org Biomol Chem 2017; 15:2168-2173. [DOI: 10.1039/c6ob02352e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Cu-catalyzed sequential inert C–O bond cleavage followed by intramolecular C–N bond formation for the synthesis of indazolo[3,2-b]quinazolinones.
Collapse
Affiliation(s)
- Rui Qiao
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Leping Ye
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University
- Wenzhou 325000
- P. R. China
| | - Kun Hu
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Shuling Yu
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Weiguang Yang
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Miaochang Liu
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Jiuxi Chen
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Jinchang Ding
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Huayue Wu
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| |
Collapse
|
13
|
Mu S, Liu Y, Gong M, Liu DK, Liu CX. Synthesis and biological evaluation of substituted desloratadines as potent arginine vasopressin V2 receptor antagonists. Molecules 2014; 19:2694-706. [PMID: 24566331 DOI: 10.3390/molecules19022694] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 01/14/2014] [Accepted: 01/26/2014] [Indexed: 11/21/2022] Open
Abstract
Twenty-one non-peptide substituted desloratadine class compounds were synthesized as novel arginine vasopressin receptor antagonists from desloratadine via successive acylation, reduction and acylation reactions. Their structures were characterized by 1H-NMR and HRMS, their biological activity was evaluated by in vitro and in vivo studies. The in vitro binding assay and cAMP accumulation assay indicated that these compounds are potent selective V2 receptor antagonists. Among them compounds 1n, 1t and 1v exhibited both high affinity and promising selectivity for V2 receptors. The in vivo diuretic assay demonstrated that 1t presented remarkable diuretic activity. In conclusion, 1t is a potent novel AVP V2 receptor antagonist candidate.
Collapse
|
14
|
Abstract
A synthesis in good to excellent yields of 23 4H-benzo[d][1,3]oxazin-4-ones, 18 of which are novel, from monosubstituted anthranilic acids and variously substituted phenyl isoselenocyanates without using any harsh reagents has been developed. The Se powder precipitated during the reaction could be efficiently recycled for the preparation of the aryl isoselenocyanates.
Collapse
Affiliation(s)
- Yuanyuan Xie
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Dongmei Zhu
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| |
Collapse
|
15
|
Yan L, Che X, Bai X, Pei Y. Syntheses of novel diaryl[d,f ][1,3]diazepines via one-pot Suzuki coupling followed by direct ring closure with carboxylic acids. Mol Divers 2012; 16:489-501. [PMID: 22752672 DOI: 10.1007/s11030-012-9382-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Accepted: 06/05/2012] [Indexed: 11/30/2022]
Abstract
A series of novel and diverse diaryl[d,f][1,3]diazepines were designed and synthesized to expand the pharmaceutical utility of the [6,7]bicyclic molecular skeletons. The facile synthesis involved two key steps: a one-pot Suzuki coupling to construct the bi-aryl intermediates from corresponding halides, and a ring closure by direct condensation with carboxylic acids.
Collapse
Affiliation(s)
- Longjia Yan
- The Center for Combinatorial Chemistry and Drug Discovery, The College of Chemistry and The School of Pharmaceutical Sciences, Jilin University, Changchun, 130012 Jilin, People's Republic of China
| | | | | | | |
Collapse
|
16
|
Abstract
A novel way to synthesise 2-aryl-4H-benzo[d][1,3]oxazin-4-ones has been developed by the cyclisation of Schiff bases with (diacetoxyiodo)benzene. The salient features of this new protocol which starts from an anthranilic acid and an aromatic aldehyde, are short reaction time, mild reaction conditions and good yields.
Collapse
Affiliation(s)
- Yuanyuan Xie
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Suping Wang
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| |
Collapse
|
17
|
|