1
|
Gao S, Cai M, Xu G, Jin Q, Wang X, Xu L, Wang L, Dai L. (NH 4) 2S 2O 8 promoted tandem radical cyclization of quinazolin-4(3 H)-ones with oxamic acids for the construction of fused quinazolinones under metal-free conditions. Org Biomol Chem 2024; 22:2241-2251. [PMID: 38372133 DOI: 10.1039/d3ob02081a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
A novel cascade radical addition/cyclization reaction of non-activated olefins and oxamic acids has been proposed. Under transition metal-free conditions, 36 quinazolinone derivatives containing an amide moiety were successfully synthesized, with the highest yield being 81%. This method involves the preparation of aminoacyl fused quinazolinone derivatives under mild conditions, offering advantages such as a high yield, a broad substrate compatibility, and a high atom economy.
Collapse
Affiliation(s)
- Shenyuan Gao
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
| | - Menglu Cai
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310027, PR China.
| | - Gang Xu
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
| | - Qiaolin Jin
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
| | - Xiaozhong Wang
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
| | - Linze Xu
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
| | - Lixiang Wang
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
| | - Liyan Dai
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
| |
Collapse
|
2
|
Tang JJ, Zhao MY, Lin YJ, Yang LH, Xie LY. Persulfate-Promoted Carbamoylation/Cyclization of Alkenes: Synthesis of Amide-Containing Quinazolinones. Molecules 2024; 29:997. [PMID: 38474508 DOI: 10.3390/molecules29050997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 02/22/2024] [Accepted: 02/24/2024] [Indexed: 03/14/2024] Open
Abstract
The incorporation of amide groups into biologically active molecules has been proven to be an efficient strategy for drug design and discovery. In this study, we present a simple and practical method for the synthesis of amide-containing quinazolin-4(3H)-ones under transition-metal-free conditions. This is achieved through a carbamoyl-radical-triggered cascade cyclization of N3-alkenyl-tethered quinazolinones. Notably, the carbamoyl radical is generated in situ from the oxidative decarboxylative process of oxamic acids in the presence of (NH4)2S2O8.
Collapse
Affiliation(s)
- Jia-Jun Tang
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425100, China
| | - Meng-Yang Zhao
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425100, China
| | - Ying-Jun Lin
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425100, China
| | - Li-Hua Yang
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425100, China
| | - Long-Yong Xie
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425100, China
| |
Collapse
|
3
|
Guo YM, Wang H, Yang JR, Chen Q, Cao C, Chen JZ. Synthesis of 2,3-Fused Quinazolinones via the Radical Cascade Pathway and Reaction Mechanistic Studies by DFT Calculations. J Org Chem 2023; 88:10448-10459. [PMID: 37458429 DOI: 10.1021/acs.joc.2c03050] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
An efficient radical cascade cyclization of unactivated alkenes toward the synthesis of a series of ring-fused quinazolinones has been developed in moderate to excellent yields using commercially available ethers, alkanes, and alcohols, respectively, under a base-free condition in a short time without a transition metal as catalyst. Notably, the transformations can be carried out with the advantages of a broad substrate scope and high atomic economy. Density functional theory calculations and wavefunction analyses were performed to elucidate the radical reaction mechanism.
Collapse
Affiliation(s)
- Ya-Min Guo
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Rd., Hangzhou 310058, Zhejiang, China
| | - Hao Wang
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Rd., Hangzhou 310058, Zhejiang, China
| | - Jin-Rong Yang
- Polytechnic Institute, Zhejiang University, 269 Shixiang Rd., Hangzhou 310015, Zhejiang, China
| | - Qiang Chen
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Rd., Hangzhou 310058, Zhejiang, China
| | - Cheng Cao
- Polytechnic Institute, Zhejiang University, 269 Shixiang Rd., Hangzhou 310015, Zhejiang, China
| | - Jian-Zhong Chen
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Rd., Hangzhou 310058, Zhejiang, China
| |
Collapse
|
4
|
He Y, Yang Z, Luo D, Luo X, Chen X, Yang W. An Oxidant-Free and Mild Strategy for Quinazolin-4(3 H)-One Synthesis via CuAAC/Ring Cleavage Reaction. Molecules 2023; 28:5734. [PMID: 37570705 PMCID: PMC10420183 DOI: 10.3390/molecules28155734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/21/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
An oxidant-free and highly efficient synthesis of phenolic quinazolin-4(3H)-ones was achieved by simply stirring a mixture of 2-aminobenzamides, sulfonyl azides, and terminal alkynes. The intermediate N-sulfonylketenimine underwent two nucleophilic additions and the sulfonyl group eliminated through the power of aromatization. The natural product 2-(4-hydroxybenzyl)quinazolin-4(3H)-one can be synthesized on a large scale under mild conditions with this method.
Collapse
Affiliation(s)
- Yueling He
- The Marine Biomedical Research Institute of Guangdong Zhanjiang, Guangdong Medical University, Zhanjiang 524023, China; (Y.H.); (Z.Y.); (D.L.)
- School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Zhongtao Yang
- The Marine Biomedical Research Institute of Guangdong Zhanjiang, Guangdong Medical University, Zhanjiang 524023, China; (Y.H.); (Z.Y.); (D.L.)
| | - Danyang Luo
- The Marine Biomedical Research Institute of Guangdong Zhanjiang, Guangdong Medical University, Zhanjiang 524023, China; (Y.H.); (Z.Y.); (D.L.)
| | - Xiai Luo
- The Marine Biomedical Research Institute of Guangdong Zhanjiang, Guangdong Medical University, Zhanjiang 524023, China; (Y.H.); (Z.Y.); (D.L.)
- Hunan Province Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China
| | - Xiaodong Chen
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524023, China
| | - Weiguang Yang
- The Marine Biomedical Research Institute of Guangdong Zhanjiang, Guangdong Medical University, Zhanjiang 524023, China; (Y.H.); (Z.Y.); (D.L.)
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524023, China
| |
Collapse
|
5
|
Yang Z, Wu X, Zhang J, Yu JT, Pan C. Metal-Free Photoinduced Hydrocyclization of Unactivated Alkenes toward Ring-Fused Quinazolin-4(3 H)-ones via Intermolecular Hydrogen Atom Transfer. Org Lett 2023; 25:1683-1688. [PMID: 36883803 DOI: 10.1021/acs.orglett.3c00329] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
A visible-light-induced hydrocyclization of unactivated alkenes was developed using 3CzClIPN as the photocatalyst to generate substituted α-methyldeoxyvasicinones and α-methylmackinazolinones in moderate to good yields. An intermolecular hydrogen atom transfer with THF as the hydrogen source was involved. Mechanism studies indicated that the intramolecular addition of the in situ formed aminal radical to the unactivated alkene generated the polycyclic quinazolinone.
Collapse
Affiliation(s)
- Zixian Yang
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Xian Wu
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Jie Zhang
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Jin-Tao Yu
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Changduo Pan
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.,School of Chemistry and Chemical Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China
| |
Collapse
|
6
|
Zhang Y, Ni Q, Pan B, Jiang L, Qiu L. Development of sterically hindered SPOs and enantioselective Ni−Al bimetallic catalyzed C−H cyclization of 4-oxoquinazolines with tethered alkenes. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.108017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
7
|
George N, Jawaid Akhtar M, Al Balushi KA, Alam Khan S. Rational drug design strategies for the development of promising multi-target directed indole hybrids as Anti-Alzheimer agents. Bioorg Chem 2022; 127:105941. [PMID: 35714473 DOI: 10.1016/j.bioorg.2022.105941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 06/03/2022] [Accepted: 06/07/2022] [Indexed: 11/26/2022]
Abstract
Alzheimer's disease (AD) is a neurological disorder that leads to dementia i.e., progressive memory loss accompanied with worsening of thinking ability of an individual. The cause of AD is not fully understood but it progresses with age where brain cells gradually die over time. According to the World Health Organization (WHO), currently 50 million people worldwide are affected by dementia and 60-70% of the cases belong to AD. Cumulative research over the past few decades have shown that molecules that act at a single target possess limited efficacy since these investigational drugs are not able to act against complex pathologies and thus do not provide permanent cure. Designing of multi-target directed ligands (MTDLs) appears to be more beneficial and a rational approach to treat chronic complex diseases including neurodegenerative diseases. Recently, MTDLs are being extensively researched by the medicinal chemists for the development of drugs for the treatment of various multifactorial diseases. Indole is one of the privileged scaffolds which is considered as an essential mediator between the gut-brain axis because of its neuroprotective, anti-inflammatory, β-amyloid anti-aggregation and antioxidant activities. Herein, we have reviewed the potential of some indole-hybrids acting at multiple targets in the pathogenesis of AD. We have reviewed research articles from the year 2014-2021 from various scientific databases and highlighted the synthetic strategies, mechanisms of neuroprotection, toxicity, structure activity relationships and molecular docking studies of various indole-hybrid derivatives. This literature review of published data on indole derivatives indicated that developing indole hybrids have improved the pharmacokinetic profile with lower toxicity, provided synergistic effect, helped to develop more potent compounds and prevented drug-drug interactions. It is evident that this class of compounds have potential to inhibit multiple enzymes targets involved in the pathogenesis of AD and therefore indole hybrids as MTDLs may play an important role in the development of anti-AD molecules.
Collapse
Affiliation(s)
- Namy George
- College of Pharmacy, National University of Science and Technology, PO Box 620, PC 130, Muscat, Oman
| | - Md Jawaid Akhtar
- College of Pharmacy, National University of Science and Technology, PO Box 620, PC 130, Muscat, Oman
| | - Khalid A Al Balushi
- College of Pharmacy, National University of Science and Technology, PO Box 620, PC 130, Muscat, Oman
| | - Shah Alam Khan
- College of Pharmacy, National University of Science and Technology, PO Box 620, PC 130, Muscat, Oman.
| |
Collapse
|
8
|
Zhang WK, Li JZ, Zhang CC, Zhang J, Zheng YN, Hu Y, Li T, Wei WT. The Synthesis of Polycyclic Quinazolinones via C(sp3)–H Functionalization of Inert Alkanes or Visible‐light Promoted Oxidation Decarboxylation of N‐hydroxyphthalimide (NHP‐esters). European J Org Chem 2022. [DOI: 10.1002/ejoc.202200523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | | | | | | | | | | | - Ting Li
- Nanyang Normal University chemistry CHINA
| | - Wen-Ting Wei
- Ningbo University Materials Science and Chemical Engineering 818, Fenghua Road, Jiangbei District 315211 Ningbo CHINA
| |
Collapse
|
9
|
Zeng Y, Nie L, Niu C, Mamatjan A, Bozorov K, Zhao J, Aisa HA. Synthesis and Biological Activities of Dihydrooxazolo[5,4- d]-pyrrolo[1,2- a]pyrimidinones. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202107002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
10
|
Wang C, Ji X, Deng GJ, Huang H. Copper-catalyzed three-component N-alkylation of quinazolinones and azoles. Org Biomol Chem 2022; 20:1200-1204. [DOI: 10.1039/d1ob02333k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Cu-catalyzed three-component N-alkylated coupling reaction of N-heteroarenes with methyl ketones and one carbon source has been developed. Using methyl ketones as alkylation reagent and DMPA (N,N’-dimethylpropionamide) as one carbon...
Collapse
|
11
|
Liu H, Yang Z, Huang G, Yu JT, Pan C. Cyanomethylative cyclization of unactivated alkenes with nitriles for the synthesis of cyano-containing ring-fused quinazolin-4(3 H)-ones. NEW J CHEM 2022. [DOI: 10.1039/d1nj05001j] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of cyano-containing pyrrolo- and piperidino-quinazolinones was developed using alkyl nitriles through radical cascade addition/cyclization under metal-free conditions.
Collapse
Affiliation(s)
- Han Liu
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Changzhou University, Changzhou 213164, P. R. China
| | - Zixian Yang
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Changzhou University, Changzhou 213164, P. R. China
| | - Gao Huang
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Changzhou University, Changzhou 213164, P. R. China
| | - Jin-Tao Yu
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Changzhou University, Changzhou 213164, P. R. China
| | - Changduo Pan
- School of Chemical and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China
| |
Collapse
|
12
|
Filban F, Ravanbakhsh M, Poormohammadi A, Khaghani S, Sadeghi-Nejad B, Neisi A, Goudarzi G. Antimicrobial properties of Peganum harmala L. seeds' smoke in indoors: applications and prospects. ENVIRONMENTAL MONITORING AND ASSESSMENT 2021; 194:17. [PMID: 34888707 DOI: 10.1007/s10661-021-09665-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Accepted: 11/27/2021] [Indexed: 06/13/2023]
Abstract
Peganum harmala L., known as Harmal or African, Syrian Rue, Espand (in Iranian culture), and Ozallaik (in Turkey), is a perennial herbaceous glabrous plant, which offers many antimicrobial activities in indoor air. In this regard, in the present study, we aimed at evaluating the disinfectant effects of Peganum harmala L. (PHL) seed smoke on microbial load in air. For this reason, the effects of four doses of PHL seeds (5, 10, 15, and 20 g) and various sampling times in the range of 0-30 min were examined on its antibacterial and antifungal effects. The experiments were conducted at two different areas including a classroom located at the health faculty of Ahvaz University of Medical Sciences and a residential area with a similar volume of 60 m3. Tryptic soy agar (TSA) was applied as a specific bacterial culture medium, and sabouraud dextrose agar (SDA) was used as a specific fungal culture medium. The concentration of bacteria and fungi in the indoor air of the residential area decreased by 71.4 and 94.7%, respectively. In the educational area, the concentration of bacteria and fungi decreased by 92.8 and 88.9%, respectively. In conclusion, the PHL smoke showed antibacterial and antifungal effects, which may be due to its alkaloids harmine properties, while it causes an increase in the concentration of particles in the air of indoor environments. Therefore, it can be used as an indoor air disinfectant for decreasing the load of bacteria and viruses in a closed space.
Collapse
Affiliation(s)
- Fereshteh Filban
- Department of Environmental Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Maryam Ravanbakhsh
- Department of Environmental Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Ali Poormohammadi
- Center of Excellence for Occupational Health, Research Center for Health Sciences, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Soheila Khaghani
- Department of Environmental Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | | | - Abdolkazem Neisi
- Department of Environmental Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Air Pollution and Respiratory Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Gholamreza Goudarzi
- Department of Environmental Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
- Air Pollution and Respiratory Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| |
Collapse
|
13
|
Anti-TB evaluation of novel 2,3-dihydroquinazolin-4(1H)-ones and in silico studies of the active compounds. Med Chem Res 2021. [DOI: 10.1007/s00044-021-02733-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
14
|
Jalali A, Dabaghian F, Zarshenas MM. Alkaloids of Peganum harmala: Anticancer Biomarkers with Promising Outcomes. Curr Pharm Des 2021; 27:185-196. [PMID: 33238864 DOI: 10.2174/1381612826666201125103941] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 08/24/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Cancer is a serious and growing global health issue worldwide. In the cancerous cells, the normal cell cycle has been disrupted via a series of irreversible changes. Recently, the investigations on herbal medicine and clarifying the phytochemicals potential in treat cancer has been increased. The combination of phytochemicals with conventional cancer treatment approaches can improve outcomes via advancing cell death, restraining cell proliferation and invasion, sensitizing cancerous cells, and promoting the immune system. Therefore, phytochemicals can be introduced as relevant complementary medicaments in cancer therapy. Peganum harmala L. (Zygophyllaceae) as a valuable medicinal herb, possesses various alkaloid ingredient. OBJECTIVE Pointing to the importance of new avenues for cancer management and P. harmala convincing effect in this field, this review strived to collect a frame to epitome possible scopes to develop novel medicines in cancer treatment. METHODS Keywords "Peganum harmala" and cancer, or chemotherapy, or anti-neoplasm were searched through the "Scopus" database up to 29th of February 2020. Papers linking to agriculture, chemistry, environmental, and genetics sciences were omitted and, papers centered on cancer were selected. RESULTS AND DISCUSSION In the current study, 42 related papers to cancer treatment and 22 papers on alkaloid bioactive components are collected from 72 papers. The β-carboline alkaloids derived from P. harmala, especially harmine, demonstrate notable anticancer properties by targeting apoptosis, autophagy, abnormal cell proliferation, angiogenesis, metastasis, and cytotoxicity. Based on the collected information, P. harmala holds significant anticancer activity. Considering the mechanism of the various anticancer drugs and their acting similarity to P. harmala, the alkaloids derived from this herb, particularly harmine, can introduce as a novel anticancer medicine solely or in adjuvant cancer therapy.
Collapse
Affiliation(s)
- Atefeh Jalali
- Medicinal Plants Processing Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Farid Dabaghian
- Department of Pharmacognosy, School of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad M Zarshenas
- Medicinal Plants Processing Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| |
Collapse
|
15
|
Sun B, Huang P, Yan Z, Shi X, Tang X, Yang J, Jin C. Self-Catalyzed Phototandem Perfluoroalkylation/Cyclization of Unactivated Alkenes: Synthesis of Perfluoroalkyl-Substituted Quinazolinones. Org Lett 2021; 23:1026-1031. [PMID: 33464096 DOI: 10.1021/acs.orglett.0c04225] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A novel visible-light-induced radical tandem trifluoromethylation/cyclization of unactivated alkenes with sodium perfluoroalkanesulfinates (Rf = CF3, C3F7, C4F9, C6F13, C8F17) under air atmosphere has been developed. A range of quinazolinones containing unactivated alkene moiety and sodium perfluoroalkanesulfinates were compatible with this transformation, leading to a variety of perfluoroalkyl-substituted quinazoline alkaloids. Remarkably, the experiment can be carried out without any metal catalyst, strong oxidant, or external photosensitizer.
Collapse
Affiliation(s)
- Bin Sun
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Panyi Huang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Zhiyang Yan
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Xiayue Shi
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Xiaoli Tang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Jin Yang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Can Jin
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P.R. China.,College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| |
Collapse
|
16
|
Liao Q, Li Q, Zhao Y, Jiang P, Yan Y, Sun H, Liu W, Feng F, Qu W. Design, synthesis and biological evaluation of novel carboline-cinnamic acid hybrids as multifunctional agents for treatment of Alzheimer’s disease. Bioorg Chem 2020; 99:103844. [DOI: 10.1016/j.bioorg.2020.103844] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 04/08/2020] [Indexed: 01/28/2023]
|
17
|
Khan I, Singh J, Kumar V, Verma VP, Shukla M, Dhasmana A, Naruka PS, Goswami AK, Ameta KL, Khan S. A Versatile Pre and Post Ugi Modification for the Synthesis of Natural Product Inspired Fused Peptide‐Carboline Scaffolds as Potential Anti‐Leishmanial Agents. ChemistrySelect 2019. [DOI: 10.1002/slct.201902441] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Irfan Khan
- Coordination Chemistry LaboratoryDepartment of Chemistry, Mohan Lal Sukhadia University, Udaipur (Rajasthan) India
| | - Jaybir Singh
- Department of pharmacyDr. Bhim Rao Ambedkar University Agra India 282002
| | - Vivek Kumar
- Human Genome and Stem-cell Center (HUG-CELL)Department of Genetics & Evolutionary BiologyInstitute of BiosciencesUniversity of São Paulo, Butanta 05,508,090- São Paulo, SP Brazil
| | | | - Monika Shukla
- Department of ChemistryBanasthali University Newai 304022
| | - Anupam Dhasmana
- Himalayan School of Bio SciencesSwami Rama Himalayan University, Dehradun India
| | | | - Ajay Kumar Goswami
- Coordination Chemistry LaboratoryDepartment of Chemistry, Mohan Lal Sukhadia University, Udaipur (Rajasthan) India
| | - Keshav Lalit Ameta
- Department of ChemistrySchool of Sciences, Mody University of Science and Technology Lakshmangarh 332311, Rajasthan India
| | - Shahnawaz Khan
- Department of ChemistryJanardan Rai Nagar Rajasthan VidyapeethDeemed to be University) Udaipur 313001 India
| |
Collapse
|
18
|
Shi BB, Chen J, Bao MF, Zeng Y, Cai XH. Alkaloids isolated from Tabernaemontana bufalina display xanthine oxidase inhibitory activity. PHYTOCHEMISTRY 2019; 166:112060. [PMID: 31302343 DOI: 10.1016/j.phytochem.2019.112060] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 06/19/2019] [Accepted: 06/26/2019] [Indexed: 06/10/2023]
Abstract
Continued interest in bioactive alkaloids led to the isolation of four undescribed alkaloids along with 74 known ones from the aerial parts of Tabernaemontana bufalina Lour. The structures of the yet undescribed alkaloids were elucidated based on NMR, IR, UV, MS and CD spectroscopic data and X-ray crystal diffraction and, according to the plant source, named as taberhaines A-D (1-4). The known compounds comprised of 66 monoterpenoid indole, three carboline and five isoquinoline alkaloids. Among them, the known apparicine inhibited significantly the activity of xanthine oxidase, which plays an important role for gout, with an IC50 value of 0.65 μM, compared to the standard drug allopurinol (IC50 = 0.60 μM).
Collapse
Affiliation(s)
- Bao-Bao Shi
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China; University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Jing Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China; University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Mei-Fen Bao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China; University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Ying Zeng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, People's Republic of China.
| | - Xiang-Hai Cai
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, People's Republic of China.
| |
Collapse
|
19
|
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.
Collapse
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
| |
Collapse
|
20
|
Karvande A, Khan S, Khan I, Singh D, Khedgikar V, Kushwaha P, Ahmad N, Kothari P, Dhasmana A, Kant R, Trivedi R, Chauhan PMS. Discovery of a tetrazolyl β-carboline with in vitro and in vivo osteoprotective activity under estrogen-deficient conditions. MEDCHEMCOMM 2018; 9:1213-1225. [PMID: 30109010 PMCID: PMC6072419 DOI: 10.1039/c8md00109j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 06/02/2018] [Indexed: 11/21/2022]
Abstract
β-Carbolines have been assessed for osteoclastogenesis. However, their effect on osteoblasts during estrogen deficiency is still unclear. Here, a series of novel piperazine and tetrazole tag β-carbolines have been synthesized and examined for osteoblast differentiation in vitro. In vitro data suggest that compound 8g is the most promising osteoblast differentiating agent that was evaluated for in vivo studies. Compound 8g promoted osteoblast mineralization, stimulated Runx2, BMP-2 and OCN expression levels, increased BrdU incorporation and inhibited generation of free radicals as well as nitric oxide. Since a piperazine group is involved in bone repair activity and β-carboline in IκB kinase (IKK) inhibition, compound 8g inhibited tumor necrosis factor α (TNFα) directed IκBα phosphorylation, preventing nuclear translocation of NF-κB thereby alleviating osteoblast apoptosis. In vivo studies show that compound 8g was able to restore estrogen deficiency-induced bone loss in ovariectomized rats without any toxicity, thus signifying its potential in bone-protection chemotherapy under postmenopausal conditions.
Collapse
Affiliation(s)
- Anirudha Karvande
- Endocrinology Division , CSIR-Central Drug Research Institute (CSIR-CDRI) , Lucknow , 226031 , India .
| | - Shahnawaz Khan
- Chemistry Division , BHUPAL NOBLES' UNIVERSITY , Udaipur-313001 , India
| | - Irfan Khan
- Medicinal and Process Chemistry Division , CSIR-Central Drug Research Institute , Lucknow-226031 , U.P , India .
| | - Deepti Singh
- Medicinal and Process Chemistry Division , CSIR-Central Drug Research Institute , Lucknow-226031 , U.P , India .
| | - Vikram Khedgikar
- Endocrinology Division , CSIR-Central Drug Research Institute (CSIR-CDRI) , Lucknow , 226031 , India .
| | - Priyanka Kushwaha
- Endocrinology Division , CSIR-Central Drug Research Institute (CSIR-CDRI) , Lucknow , 226031 , India .
| | - Naseer Ahmad
- Endocrinology Division , CSIR-Central Drug Research Institute (CSIR-CDRI) , Lucknow , 226031 , India .
| | - Priyanka Kothari
- Endocrinology Division , CSIR-Central Drug Research Institute (CSIR-CDRI) , Lucknow , 226031 , India .
| | - Anupam Dhasmana
- Research Himalayan School of Bio sciences , Swami Rama Himalayan University , Dehradun , India
| | - Ruchir Kant
- Molecular and Structural Biology Central Drug Research Institute , CSIR , Lucknow 226031 , India
| | - Ritu Trivedi
- Endocrinology Division , CSIR-Central Drug Research Institute (CSIR-CDRI) , Lucknow , 226031 , India .
| | - Prem M S Chauhan
- Medicinal and Process Chemistry Division , CSIR-Central Drug Research Institute , Lucknow-226031 , U.P , India .
| |
Collapse
|
21
|
Zhao Y, Ye F, Xu J, Liao Q, Chen L, Zhang W, Sun H, Liu W, Feng F, Qu W. Design, synthesis and evaluation of novel bivalent β-carboline derivatives as multifunctional agents for the treatment of Alzheimer's disease. Bioorg Med Chem 2018; 26:3812-3824. [PMID: 29960728 DOI: 10.1016/j.bmc.2018.06.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 06/08/2018] [Accepted: 06/13/2018] [Indexed: 10/14/2022]
Abstract
To develop potent multi-target ligands against Alzheimer's disease (AD), a series of novel bivalent β-carboline derivatives were designed, synthesized, and evaluated. In vitro studies revealed these compounds exhibited good multifunctional activities. In particular, compounds 8f and 8g showed the good selectivity potency on BuChE inhibition (IC50 = 1.7 and 2.7 μM, respectively), Aβ1-42 disaggregation and neuroprotection. Compared with the positive control resveratrol, 8f and 8g showed better activity in inhibiting Aβ1-42 aggregation, with inhibitory rate 82.7% and 85.7% at 25 μM, respectively. Moreover, compounds 8e, 8f and 8g displayed excellent neuroprotective activity by ameliorating the impairment induced by H2O2, okadaic acid (OA) and Aβ1-42 without cytotoxicity in SH-SY5Y cells. Thus, the present study evidently showed that compounds 8f and 8g are potent multi-functional agents against AD and might serve as promising lead candidates for further development.
Collapse
Affiliation(s)
- Yifan Zhao
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Feng Ye
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Jian Xu
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Qinghong Liao
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Lei Chen
- Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing 210009, China
| | - Weijia Zhang
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Haopeng Sun
- Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Wenyuan Liu
- Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing 210009, China
| | - Feng Feng
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China; Key Laboratory of Biomedical Functional Materials, China Pharmaceutical University, Nanjing 210009, China; Jiangsu Food and Pharmaceutical Science College, Huaian 223003, China.
| | - Wei Qu
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China; Key Laboratory of Biomedical Functional Materials, China Pharmaceutical University, Nanjing 210009, China.
| |
Collapse
|
22
|
Fatima A, Ahmad M, Zafar M, Yaseen G, Zada Khan MP, Butt MA, Sultana S. Ethnopharmacological relevance of medicinal plants used for the treatment of oral diseases in Central Punjab-Pakistan. J Herb Med 2018. [DOI: 10.1016/j.hermed.2017.09.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
23
|
Huang HM, Adams RW, Procter DJ. Reductive cyclisations of amidines involving aminal radicals. Chem Commun (Camb) 2018; 54:10160-10163. [DOI: 10.1039/c8cc05178j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The first general study of aminal radical cyclisations, triggered by reduction of amidines with SmI2, delivers quinazolinones with complete diastereocontrol.
Collapse
Affiliation(s)
- Huan-Ming Huang
- School of Chemistry
- Oxford Road
- University of Manchester
- Manchester
- UK
| | - Ralph W. Adams
- School of Chemistry
- Oxford Road
- University of Manchester
- Manchester
- UK
| | - David J. Procter
- School of Chemistry
- Oxford Road
- University of Manchester
- Manchester
- UK
| |
Collapse
|
24
|
Abstract
An overview of the highlights in total synthesis of natural products using iridium as a catalyst is given.
Collapse
Affiliation(s)
- Changchun Yuan
- School of Chemical Engineering and Technology
- North University of China
- Taiyuan 030051
- PR China
| | - Bo Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- PR China
| |
Collapse
|
25
|
Synthesis and in-vitro anti-leishmanial activity of (4-arylpiperazin-1-yl)(1-(thiophen-2-yl)-9H-pyrido[3,4-b]indol-3-yl)methanone derivatives. Bioorg Chem 2016; 70:100-106. [PMID: 27939960 DOI: 10.1016/j.bioorg.2016.11.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Revised: 10/08/2016] [Accepted: 11/27/2016] [Indexed: 11/23/2022]
Abstract
In the present study, we have reported synthesis and biological evaluation of a series of fifteen 1-(thiophen-2-yl)-9H-pyrido[3,4-b]indole derivatives against both promastigotes and amastigotes of Leishmania parasites responsible for visceral (L. donovani) and cutaneous (L. amazonensis) leishmaniasis. Among these reported analogues, compounds 7b, 7c, 7f, 7g, 7i, 7j, 7m, 7o displayed potent activity (15.55, 7.70, 7.00, 3.80, 14.10, 9.25, 3.10, 4.85μM, respectively) against L. donovani promastigotes than standard drugs miltefosine (15.70μM) and pentamidine (32.70μM) with good selectivity index. In further, in-vitro evaluation against amastigote forms, two compounds 7g (8.80μM) and 7i (7.50μM) showed significant inhibition of L. donovani amastigotes. Standard drug amphotericin B is also used as control to compare inhibition potency of compounds against both promastigote (0.24μM) and amastigote (0.05μM) forms.
Collapse
|
26
|
Synthesis and anti-leishmanial evaluation of 1-phenyl-2,3,4,9-tetrahydro-1 H -β-carboline derivatives against Leishmania infantum. Eur J Med Chem 2016; 123:814-821. [DOI: 10.1016/j.ejmech.2016.08.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 08/08/2016] [Accepted: 08/09/2016] [Indexed: 11/18/2022]
|
27
|
Wang C, Zhang Z, Wang Y, He X. Cytotoxic Constituents and Mechanism from Peganum harmala. Chem Biodivers 2016; 13:961-8. [PMID: 27273342 DOI: 10.1002/cbdv.201500384] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 02/04/2016] [Indexed: 11/08/2022]
Abstract
Peganum harmala L. is a traditional Chinese and Uygur medicine used to treat cancer. Bioactivity-guided fractionation was applied to determine the cytotoxic constituents from P. harmala. A novel triterpenoid and a phenolic glycoside were isolated and identified, as well as seven known compounds. The novel metabolites were elucidated to be 3α-acetoxy-27-hydroxyolean-12-en-28-oic acid methyl ester (1, OA) and N-acetyl-9-syringinoside (9). Some compounds exhibited potent cytotoxicity against human tumor cells. Among them, OA showed the highest cytotoxicity against human lung cancer cells A549 with an IC50 value of 8.03 ± 0.81 μm. OA had a potent anti-NSCLC cell activity by interfering with the epidermal growth factor receptor (EGFR) activation and its downstream signaling, and could exert an antiproliferative effect by inactivation of EGFR-driven antiapoptotic pathway followed by the release of mitochondrial cytochrome c, which might prove to be a promising leading compound for the development of an anti-lung cancer drug.
Collapse
Affiliation(s)
- Chunhua Wang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China
| | - Zhenxue Zhang
- College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, P. R. China
| | - Yihai Wang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China
| | - Xiangjiu He
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China
| |
Collapse
|
28
|
Exploring nuruk aroma; Identification of volatile compounds in commercial fermentation starters. Food Sci Biotechnol 2016; 25:393-399. [PMID: 30263282 DOI: 10.1007/s10068-016-0054-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 10/30/2015] [Accepted: 10/30/2015] [Indexed: 10/22/2022] Open
Abstract
Volatile compounds of 7 commercial fermentation starters, including 4 traditional nuruk, 2 ipguk, and 1 crude amylolytic enzyme, were extracted using solvent-assisted flavor evaporation (SAFE), and extracts were analyzed using GC-MS. A total of 70 volatile compounds, including 4 esters, 10 acids, 16 alcohols, 16 hydrocarbons, 9 ketones, 5 aldehydes, 3 volatiles phenols, and 7 miscellaneous components were identified. Concentrations of volatile compounds, including 4,6-dimethylundecane, methyl 2-hydroxybenzoate, 1-hexanol, 2-phenylethanol, 3-methylbutanoic acid, and hexanoic acid were higher in 4 traditional nuruk starters than in others. The major volatile components in 2 ipguk starters were the hydrocarbones dodecane, heptadecane, octadecane, and nonadecane. Concentrations of 2-methoxy-4-vinylphenol and 3-hydroxy-2-butanone were highest in the crude amylolytic enzyme starter. Compositions and amounts of volatile compounds were different among the 7 commercial fermentation starters.
Collapse
|
29
|
Elmuradov B, Shakhidoyatov K, Dräger G, Butenschön H. Tricyclic Quinazoline Alkaloids Conjugated to Ferrocene: Synthesis, Structure, and Redox Behavior of Ferrocenylmethylene-Substituted 7H-Deoxyvasicinones. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501307] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
30
|
Wang C, Zhang Z, Wang Y, He X. Cytotoxic indole alkaloids against human leukemia cell lines from the toxic plant Peganum harmala. Toxins (Basel) 2015; 7:4507-18. [PMID: 26540074 PMCID: PMC4663518 DOI: 10.3390/toxins7114507] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 09/24/2015] [Accepted: 10/16/2015] [Indexed: 11/16/2022] Open
Abstract
Bioactivity-guided fractionation was used to determine the cytotoxic alkaloids from the toxic plant Peganum harmala. Two novel indole alkaloids, together with ten known ones, were isolated and identified. The novel alkaloids were elucidated to be 2-(indol-3-yl)ethyl-α-L-rhamnopyranosyl-(1 → 6)-β-D-glucopyranoside (2) and 3-hydroxy-3-(N-acetyl-2-aminoethyl)-6-methoxyindol-2-one (3). The cytotoxicity against human leukemia cells was assayed for the alkaloids and some of them showed potent activity. Harmalacidine (compound 8, HMC) exhibited the highest cytotoxicity against U-937 cells with IC50 value of 3.1 ± 0.2 μmol/L. The cytotoxic mechanism of HMC was targeting the mitochondrial and protein tyrosine kinase signaling pathways (PTKs-Ras/Raf/ERK). The results strongly demonstrated that the alkaloids from Peganum harmala could be a promising candidate for the therapy of leukemia.
Collapse
Affiliation(s)
- Chunhua Wang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Zhenxue Zhang
- College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China.
| | - Yihai Wang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Xiangjiu He
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| |
Collapse
|
31
|
Wang CH, Zeng H, Wang YH, Li C, Cheng J, Ye ZJ, He XJ. Antitumor quinazoline alkaloids from the seeds of Peganum harmala. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2015; 17:595-600. [PMID: 26166311 DOI: 10.1080/10286020.2015.1042373] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A phytochemical study on the methanol extracts from the seeds of Peganum harmala L. led to a new quizonaline alkaloid (S)-vasicinone-1-O-β-d-glucopyranoside (1) and four known ones, (R)-vasicinone-1-O-β-d-glucopyranoside (2), (S)-vasicinone (3), vasicine (4), and deoxyvasicinone (5). Their structures were elucidated by spectroscopic analysis including IR, HR-ESI-MS, 1D and 2D NMR, and specific rotation as well as by comparison of the data with those in the literature. All of the alkaloids were screened for antiproliferative activity against human gastric cancer cells MCG-803 with MTT method. Compounds 1 and 3 exhibited moderate inhibitory activity.
Collapse
Affiliation(s)
- Chun-Hua Wang
- a School of Pharmaceutical Sciences, Wuhan University , Wuhan 430071 , China
| | | | | | | | | | | | | |
Collapse
|
32
|
Wang H, Jiao S, Chen K, Zhang X, Zhao L, Liu D, Zhou Y, Liu H. Direct access to pyrido/pyrrolo[2,1-b]quinazolin-9(1H)-ones through silver-mediated intramolecular alkyne hydroamination reactions. Beilstein J Org Chem 2015; 11:416-24. [PMID: 25977715 PMCID: PMC4419559 DOI: 10.3762/bjoc.11.47] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 03/02/2015] [Indexed: 02/05/2023] Open
Abstract
We report a synthetic methodology for the construction of the fused heterocyclic compounds pyrido[2,1-b]quinazolin-9(1H)-ones and pyrrolo[2,1-b]quinazolin-9(1H)-ones through an AgOTf-catalyzed intramolecular alkyne hydroamination reaction. The methodology is applicable to a wide scope of substrates and produces a series of fused quinazolinone heterocycles in good to excellent yields.
Collapse
Affiliation(s)
- Hengshuai Wang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Shengchao Jiao
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
- Shenyang Pharmaceutical University, 103 Wenhua Road, Shengyang 110016, P. R. China
| | - Kerong Chen
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Xu Zhang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Linxiang Zhao
- Shenyang Pharmaceutical University, 103 Wenhua Road, Shengyang 110016, P. R. China
| | - Dan Liu
- Shenyang Pharmaceutical University, 103 Wenhua Road, Shengyang 110016, P. R. China
| | - Yu Zhou
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Hong Liu
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| |
Collapse
|
33
|
Discovery of deoxyvasicinone derivatives as inhibitors of NEDD8-activating enzyme. Methods 2014; 71:71-6. [PMID: 25196325 DOI: 10.1016/j.ymeth.2014.08.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Revised: 08/16/2014] [Accepted: 08/22/2014] [Indexed: 12/11/2022] Open
Abstract
NEDD8-activating enzyme (NAE) controls the specific degradation of proteins regulated by cullin-RING ubiquitin E3 ligases, and has been considered as an attractive molecular target for the development of drugs against cancer. A pharmacophore model constructed from a training set of deoxyvasicinone derivatives was used to screen 376 compounds from an analogue database. From the initial screening, the valine-linked deoxyvasicinone derivative 9 and the N-isopropyl-linked deoxyvasicinone derivative 10 emerged as the top scoring candidates. Compounds 9 and 10 showed micromolar potencies in both cell-free and cell-based systems, with selectivity for NAE over the related enzymes SAE and UAE. Molecular modelling analysis suggested that 9 and 10 may inhibit NAE by blocking the ATP-binding domain. Thus, these deoxyvasicinone derivatives could be considered as promising lead molecules for the development of more potent inhibitors of NAE.
Collapse
|
34
|
Tojiboev A, Wang R, Pan F, Englert U, Turgunov K, Okmanov R. Insight into the chemical bonding and electrostatic potential: A charge density study on a quinazoline derivative. J STRUCT CHEM+ 2014. [DOI: 10.1134/s0022476613060036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
35
|
Simultaneous determination of harmine, harmaline and their metabolites harmol and harmalol in beagle dog plasma by UPLC–ESI-MS/MS and its application to a pharmacokinetic study. J Pharm Biomed Anal 2013; 85:162-8. [DOI: 10.1016/j.jpba.2013.07.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 07/07/2013] [Accepted: 07/12/2013] [Indexed: 11/21/2022]
|
36
|
Synthesis of natural quinazolinones and some of their analogues through radical cascade reactions involving N-acylcyanamides. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.05.058] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
37
|
Schievano E, Morelato E, Facchin C, Mammi S. Characterization of markers of botanical origin and other compounds extracted from unifloral honeys. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:1747-1755. [PMID: 23360363 DOI: 10.1021/jf302798d] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The possibility of tracing the botanical and geographical origin of products such as honey has become more important because of market globalization. As a consequence, numerous analytical methods have been applied to the determination of honey authenticity. The scope of the present work is to chromatographically purify and characterize 23 compounds from organic extracts of unifloral (chestnut, linden, orange, acacia, eucalyptus, honeydew) and polyfloral honeys. Of these compounds, 17 were identified as specific markers and were used for botanical discrimination in a previous study based on multivariate statistical analysis of proton nuclear magnetic resonance ((1)H NMR) data. Together with the botanical markers, 6 other substances were isolated and characterized using NMR and mass spectrometry. These phytochemicals belong to several classes, that is, terpenes, organic acids, flavonoids, and others. For the first time, a diacylglyceryl ether and 5 other compounds present in different types of honey were identified and characterized.
Collapse
|
38
|
Zhong HJ, Ma VPY, Cheng Z, Chan DSH, He HZ, Leung KH, Ma DL, Leung CH. Discovery of a natural product inhibitor targeting protein neddylation by structure-based virtual screening. Biochimie 2012; 94:2457-60. [PMID: 22709868 DOI: 10.1016/j.biochi.2012.06.004] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2011] [Accepted: 06/05/2012] [Indexed: 11/29/2022]
Abstract
NEDD8-activating enzyme (NAE) controls the specific degradation of proteins regulated by cullin-RING ubiquitin E3 ligase, and has been considered as an attractive molecular target for the development of anti-cancer drugs. We report herein the identification of the dipeptide-conjugated deoxyvasicinone derivative (1) as an inhibitor of NAE by virtual screening of over 90,000 compounds from the ZINC database of natural products. Molecular modelling results suggested that 1 may be a non-covalent competitive inhibitor of NAE by blocking the ATP-binding domain. Compound 1 was able to inhibit NAE activity in both cell-free and cell-based assay with potencies in the micromolar range and selectivity over analogous E1 enzymes UAE and SAE. We envisage that the identification and molecular docking analysis of this bioactive scaffold as an NAE inhibitor would provide the scientific community with useful information in order to generate more potent analogues.
Collapse
Affiliation(s)
- Hai-Jing Zhong
- Institute of Chinese Medical Sciences, University of Macau, Macao SAR, China
| | | | | | | | | | | | | | | |
Collapse
|
39
|
Bahmani M, Eftekhari Z. An ethnoveterinary study of medicinal plants in treatment of diseases and syndromes of herd dog in southern regions of Ilam province, Iran. ACTA ACUST UNITED AC 2012; 22:403-407. [PMID: 23667351 PMCID: PMC3648685 DOI: 10.1007/s00580-012-1423-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2011] [Accepted: 01/11/2012] [Indexed: 12/01/2022]
Abstract
This paper describes a selection of the ethnoveterinary medicines used for herd dogs in the southern regions of Ilam province, Iran. Traditional botanical medicine is the primary mode of healthcare for most of the rural population in Ilam province. In this study, a questionnaire was distributed among 45 residential areas in 22 rural zones of the southern areas of Ilam province. The objective of this study was the recognition of natural medicinal methods using medicinal plants, and the classification of ethnoveterinary applications and collection of domestic science. Twenty-two medicinal plants from 16 families were identified. The main application of these plants was for the detection and treatment of digestive disorders using Citrullus colocynthis, Aristolochia clematis, Scrophularia deserti, Quercus brantii, Ceracus microcarpa, Echium strigosa, Pistacia atlantica, and Pistacia khinjuk which have been applied using Euphurbia graminifolius, Peganum harmala, Salsola rigida, Artemisia herba-alba, Amygdalus arabica, jolbak of salt water, Peganum harmala L., and Nicotina tabacum for external and internal parasite disorders. S. deserti for ophthalmic disorders, and P. atlantica, P. khinjuk, and Q. brantii for respiratory disorders were applied. The present study confirmed the traditional medical effects of some plants and revealed the unique medical effects of other plants, which if recognized could be useful in the creation of new ideas and increasing knowledge for the modern pharmaceutical industry. Since very few clinical trials have been conducted on plants native to Ilam province, it is necessary that more research be conducted to ensure that labeled and standardized products are introduced for human consumption.
Collapse
Affiliation(s)
- Mahmoud Bahmani
- Young Researchers Club, Dehloran Branch, Islamic Azad University, Dehloran, Iran
| | - Zohre Eftekhari
- Veterinary Medicine Faculty, Tehran University, Tehran, Iran
| |
Collapse
|
40
|
Fang J, Zhou J. Efficient syntheses of 2,3-disubstituted natural quinazolinones via iridium catalysis. Org Biomol Chem 2012; 10:2389-91. [DOI: 10.1039/c2ob07178a] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
41
|
Elmuradov BZ, Makhmadiyarova CE, Turgunov KK, Tashkhodjaev B, Shakhidoyatov KM. (4-Nitrophenyl)(1,2,3,9-tetrahydropyrrolo[2,1- b]quinazolin-3-yl)methanol monohydrate. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o1680. [PMID: 21837078 PMCID: PMC3151778 DOI: 10.1107/s1600536811021775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2011] [Accepted: 06/06/2011] [Indexed: 11/28/2022]
Abstract
In the crystal structure of the title compound, C18H17N3O3·H2O, the molecules are linked by O—H⋯O and O—H⋯N hydrogen bonds, resulting in a chain along the a axis. The crystal structure is stabilized by weak intermolecular C—H⋯π (ring) hydrogen bonds and aromatic π⋯π stacking interactions [centroid–centroid distance = 3.902 (1) Å] between the pyrimidino rings of the quinazoline system. The tricyclic quinazoline fragment is almost planar (rms deviation = 0.0139 Å) with the two methylene C atoms of the pyrrolo ring deviating by 0.148 (2) and −0.081 (3) Å from the plane through the other atoms. The 4-nitrophenyl ring makes a dihedral angle of 12.55 (7)° with the tricyclic ring system.
Collapse
|
42
|
Zayed R. Efficient in vitro elicitation of β-carboline alkaloids in transformed root cultures of Peganum harmala. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.bfopcu.2011.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
43
|
Seyyedneja S, Motamedi H. A Review on Native Medicinal Plants in Khuzestan, Iran with Antibacterial Properties. INT J PHARMACOL 2010. [DOI: 10.3923/ijp.2010.551.560] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
44
|
Elmuradov BZ, Okmanov RY, Abdurazakov AS, Tashkhodjaev B, Shakhidoyatov KM. (E)-3-[4-(Dimethyl-amino)-benzyl-idene]-2,3-di-hydro-1H,9H-pyrrolo-[2,1-b]quinazolin-9-one. Acta Crystallogr Sect E Struct Rep Online 2010; 66:o1592. [PMID: 21587830 PMCID: PMC3006833 DOI: 10.1107/s1600536810020878] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2010] [Accepted: 06/01/2010] [Indexed: 11/10/2022]
Abstract
The title compound, C(20)H(19)N(3)O, was obtained by condensation of 2,3-dihydro-1H,9H-pyrrolo-[2,1-b]quinazolin-9-one (alkaloid de-oxy-vasicinone, isolated from Peganum Harmala) with 4-(dimethyl-amino)-benzaldehyde in the presence of sodium methoxide. The 2,3-dihydro-1H,9H-pyrrolo-[2,1-b]quinazolin-9-one part of the mol-ecule is roughly planar (r.m.s. deviation = 0.0178 Å) and is essentially coplanar with the benzil-idene ring (r.m.s. deviation = 0.0080 Å), forming a dihedral angle of 5.0 (1)°. The crystal structure is stabilized by two aromatic π-π stacking inter-actions observed between the benzene rings of neighboring mol-ecules [centroid-centroid distance = 3.7555 (19) Å.
Collapse
Affiliation(s)
- Burkhon Zh Elmuradov
- S. Yunusov Institute of the Chemistry of Plant Substances, Academy of Sciences of Uzbekistan, Mirzo Ulugbek Str. 77, Tashkent 100170, Uzbekistan
| | | | | | | | | |
Collapse
|
45
|
Nenaah G. Antibacterial and antifungal activities of (beta)-carboline alkaloids of Peganum harmala (L) seeds and their combination effects. Fitoterapia 2010; 81:779-82. [PMID: 20398742 DOI: 10.1016/j.fitote.2010.04.004] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2010] [Revised: 04/05/2010] [Accepted: 04/07/2010] [Indexed: 10/19/2022]
Abstract
The β-carboline alkaloids of Peganum harmala L were extracted through a bioassay-guided fractionation and their antimicrobial activities were investigated. Results revealed significant differences (P>0.05) between compounds depending on the microorganism tested and the application method. When examined individually, harmine was the most effective against Proteus vulgaris, Bacillus subtilis and Candida albicans where inhibition zones ranged between 21.2 and 24.7 mm. Potentiality of the alkaloids was increased when applied as binary mixtures suggesting a kind of synergistic interaction with inhibition zones reaching 31.5mm with the total alkaloidal extract. We recommended the use of such compounds as new antimicrobial biorationals.
Collapse
Affiliation(s)
- Gomah Nenaah
- Zoology Department, Faculty of Science, Kafrelsheikh University, Egypt
| |
Collapse
|
46
|
Rook Y, Schmidtke KU, Gaube F, Schepmann D, Wünsch B, Heilmann J, Lehmann J, Winckler T. Bivalent β-Carbolines as Potential Multitarget Anti-Alzheimer Agents. J Med Chem 2010; 53:3611-7. [DOI: 10.1021/jm1000024] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yvonne Rook
- Institut für Pharmazie, Lehrstuhl für Pharmazeutische/Medizinische Chemie, Friedrich-Schiller-Universität Jena, Germany
| | - Kai-Uwe Schmidtke
- Institut für Pharmazie, Lehrstuhl für Pharmazeutische Biologie, Friedrich-Schiller-Universität Jena, Semmelweisstrasse 10, D-07743 Jena, Germany
| | - Friedemann Gaube
- Institut für Pharmazie, Lehrstuhl für Pharmazeutische Biologie, Friedrich-Schiller-Universität Jena, Semmelweisstrasse 10, D-07743 Jena, Germany
| | - Dirk Schepmann
- Institut für Pharmazeutische und Medizinische Chemie der Westfälischen Wilhelms-Universität Münster, Germany
| | - Bernhard Wünsch
- Institut für Pharmazeutische und Medizinische Chemie der Westfälischen Wilhelms-Universität Münster, Germany
| | - Jörg Heilmann
- Lehrstuhl für Pharmazeutische Biologie, Universität Regensburg, Germany
| | - Jochen Lehmann
- Institut für Pharmazie, Lehrstuhl für Pharmazeutische/Medizinische Chemie, Friedrich-Schiller-Universität Jena, Germany
| | - Thomas Winckler
- Institut für Pharmazie, Lehrstuhl für Pharmazeutische Biologie, Friedrich-Schiller-Universität Jena, Semmelweisstrasse 10, D-07743 Jena, Germany
| |
Collapse
|
47
|
Antibacterial activity of eight Iranian plant extracts against methicillin and cefixime restistant Staphylococcous aureus strains. ASIAN PAC J TROP MED 2010. [DOI: 10.1016/s1995-7645(10)60063-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
48
|
Kamal A, Markandeya N, Shankaraiah N, Reddy C, Prabhakar S, Reddy C, Eberlin M, Silva Santos L. Chemoselective Aromatic Azido Reduction with Concomitant Aliphatic Azide Employing Al/Gd Triflates/NaI and ESI-MS Mechanistic Studies. Chemistry 2009; 15:7215-24. [DOI: 10.1002/chem.200900853] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
49
|
Alkaloids from the seeds of Peganum harmala showing antiplasmodial and vasorelaxant activities. J Nat Med 2008; 62:470-2. [DOI: 10.1007/s11418-008-0259-7] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2008] [Accepted: 04/28/2008] [Indexed: 10/22/2022]
|
50
|
de Fatima Pereira M, Thiéry V, Besson T. Synthesis of novel 2,3-substituted quinazolin-4-ones by condensation of alkyl or aromatic diamines with 5-(N-arylimino)-4-chloro-5H-1,2,3-dithiazoles. Tetrahedron 2007. [DOI: 10.1016/j.tet.2006.11.028] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|