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DFT Calculation, Hirshfeld Analysis and X-Ray Crystal Structure of Some Synthesized N-alkylated(S-alkylated)-[1,2,4]triazolo[1,5-a]quinazolines. CRYSTALS 2021. [DOI: 10.3390/cryst11101195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The present work aimed to synthesize 2-methylthio-triazoloquinazoline derivatives and study their X-ray, NMR, DFT and Hirshfeld characteristics. The cyclocondensation of dimethyl-N-cyanodithiocarbonate with 2-hydrazinobenzoic acid hydrochloride resulted in an intermediate, 2-methylthio-[1,2,4]triazolo[1,5-a]quinazolin-5-one (A), which upon treatment with phosphorus pentasulfide, transformed into the 2-methylthio-[1,2,4]triazolo[1,5-a]quinazolin-5-thione (B). Reaction of 2-methylthio-triazoloquinazolines (A&B) with alkyl halides (allyl bromide and ethyl iodide) in basic medium afforded 4-allyl-2-methylthio-[1,2,4]triazolo[1,5-a]quinazolin-5-one (1; N-alkylated) and 5-ethylthio-2-methylthio-[1,2,4]triazolo[1,5-a]quinazoline (2; S-alkylated), respectively. Their molecular and supramolecular structures were presented. Unambiguously, the molecular structures of 1 and 2 were confirmed via NMR and single-crystal X-ray diffraction. The resulting findings confirmed the structures of 1 and 2 and determined their crystalized system (monoclinic system; P21/n space group). Hirshfeld analysis of 1 revealed the importance of the significantly short O···H (6.7%), S···S (1.2%) and C···C (2.8%); however, the short H···H (42.6%), S···H (16.3%) and C···C (4.3%) were showed in 2 by intermolecular interactions in the molecular packing. The 1,2,4-triazoloquinzolines (1&2) were anticipated to be relatively polar compounds with net dipole moments of 2.9284 and 4.2127 Debye, respectively. The molecular electrostatic potential, atomic charge distribution maps and reactivity descriptors for 1 and 2 were also determined. The calculated nuclear magnetic resonance spectra of the targets 1 and 2 were well correlated with the experimental data.
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Abuelizz HA, Al-Salahi R. An overview of triazoloquinazolines: Pharmacological significance and recent developments. Bioorg Chem 2021; 115:105263. [PMID: 34426148 DOI: 10.1016/j.bioorg.2021.105263] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 07/14/2021] [Accepted: 08/07/2021] [Indexed: 01/26/2023]
Abstract
Nitrogen heterocyclic rings have participated to constitute most of the drugs and several pharmacologically related compounds. The existence of such hetero atoms/groups in heterocyclic systems privileged specificities in their biological objectives. Particularly, quinazoline and triazole are biologically imperative platforms known to be linked with various pharmacological activities. Some of the prominent pharmacological responses ascribed to these systems are analgesic, antiinflammatory, anticonvulsant, hypnotic, antihistaminic, antihypertensive, anticancer, antimicrobial, antitubercular, antiviral and antimalarial activities. This diversity in the pharmacological outputs for both triazole and quinazoline systems has encouraged the medicinal chemistry researchers to create several chemical routes aiming at the incorporation of two rings in one molecule named triazoloquinazoline system. This system has shown multiple potential activities against numerous targets. Correlation the specific structural features of triazoloquinazoline system with its pharmacological purposes has successively been achieved by performing several pharmacological examinations and structure-activity relationship studies. The development of triazoloquinazoline derivatives and the understanding of their pharmacological targets offer opportunities for novel therapeutics. This review mainly emphases on the medicinal chemistry aspects of triazoloquinazolines including synthesis, reactivity, biological activity and structure activity relationship studies (SARs). Moreover, this review collates literature reported by researchers on triazoquinazolines and provides detailed attention on their analogs pharmacological activities in the perspective of drug development and discovery.
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Affiliation(s)
- Hatem A Abuelizz
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia
| | - Rashad Al-Salahi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia.
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Turky A, Sherbiny FF, Bayoumi AH, Ahmed HEA, Abulkhair HS. Novel 1,2,4-triazole derivatives: Design, synthesis, anticancer evaluation, molecular docking, and pharmacokinetic profiling studies. Arch Pharm (Weinheim) 2020; 353:e2000170. [PMID: 32893368 DOI: 10.1002/ardp.202000170] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 08/11/2020] [Accepted: 08/13/2020] [Indexed: 12/13/2022]
Abstract
Three novel series of 1,2,4-triazole derivatives were designed and synthesized as potential adenosine A2B receptor antagonists. The design of the new compounds depended on a virtual screening of a previously constructed library of compounds targeting the human adenosine A2B protein. Spectroscopic techniques including 1 H nuclear magnetic resonance (NMR) and 13 C NMR, and infrared and mass spectroscopy were used to confirm the structures of the synthesized compounds. The in vitro cytotoxicity evaluation was carried out against a human breast adenocarcinoma cell line (MDA-MB-231) using the MTT assay, and the obtained results were compared with doxorubicin as a reference anticancer agent. In addition, in silico studies to propose how the two most active compounds interact with the adenosine A2B receptor as a potential target were performed. Furthermore, a structure-activity relationship analysis was performed, and the pharmacokinetic profile to predict the oral bioavailability and other pharmacokinetic properties was also explained. Four of our designed derivatives showed promising cytotoxic effects against the selected cancer cell line. Compound 15 showed the highest activity with an IC50 value of 3.48 µM. Also, compound 20 revealed an equipotent activity with the reference cytotoxic drug, with an IC50 value of 5.95 µM. The observed IC50 values were consistent with the obtained in silico docking scores. The newly designed compounds revealed promising pharmacokinetic profiles as compared with the reference marketed drug.
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Affiliation(s)
- Abdallah Turky
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Al-Azhar University, Nasr City, Cairo, Egypt
| | - Farag F Sherbiny
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Al-Azhar University, Nasr City, Cairo, Egypt.,Pharmaceutical Organic Chemistry Department, College of Pharmacy, Misr University for Science and Technology (MUST), 6th October City, Egypt
| | - Ashraf H Bayoumi
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Al-Azhar University, Nasr City, Cairo, Egypt
| | - Hany E A Ahmed
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Al-Azhar University, Nasr City, Cairo, Egypt.,Pharmacognosy and Pharmaceutical Chemistry Department, Pharmacy College, Taibah University, Al-Madinah, Al-Munawarah, Saudi Arabia
| | - Hamada S Abulkhair
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Al-Azhar University, Nasr City, Cairo, Egypt.,Pharmaceutical Chemistry Department, Faculty of Pharmacy, Horus University, New Damietta, Egypt
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Abuelizz HA, Taie HA, Marzouk M, Al-Salahi R. Synthesis and antioxidant activity of 2-methylthio-pyrido[3,2-e][1,2,4] triazolo[1,5-a]pyrimidines. OPEN CHEM 2019. [DOI: 10.1515/chem-2019-0092] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractA series of 2-methylthio-pyrido-triazolopyrimidines (1-17) were prepared by the reaction of dimethyl-N-cyanoimidodithiocarbonate with hydrazinopyridine carboxylic acid as starting reactants. Their chemical structures were affirmed with HREI-MS, IR and NMR analyses. The target compounds (1-17) were evaluated for their antioxidant activity using 1,1-diphenyl-2-picryl hydrazyl (DPPH) radical scavenging, ferric reduction antioxidant power (FRAP) and reducing power capability (RPC). The results revealed that some pyrido-triazolopyrimidines showed good activity as antioxidant agents, in particular, compounds 12 and 15 were found to possess good antioxidant activity. Butylated hydroxyl toluene (BHT) was used as reference drug.
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Affiliation(s)
- Hatem A. Abuelizz
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh11451, Saudi Arabia
| | - Hanan A.A. Taie
- Plant Biochemistry Department, Division of Agriculture & Biological Researches, National Research Centre, 33 El-Bohouth St. (Former El-Tahrir St.), Dokki 12622, Giza, Egypt
| | - Mohamed Marzouk
- Chemistry of Natural Products Group, Centre of Excellence for Advanced Sciences, National Research Centre, 33 El-Bohouth St. (Former El-Tahrir St.) Dokki, Cairo12622, Egypt
| | - Rashad Al-Salahi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh11451, Saudi Arabia
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Savateev KV, Ulomsky EN, Butorin II, Charushin VN, Rusinov VL, Chupakhin ON. Azoloazines as A2a receptor antagonists. Structure–activity relationship. RUSSIAN CHEMICAL REVIEWS 2018. [DOI: 10.1070/rcr4792] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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El-Hashash MAEA, Azab ME, Faty RAEA, Amr AEGE. Synthesis, Antimicrobial and Anti-inflammatory Activity of Some New Benzoxazinone and Quinazolinone Candidates. Chem Pharm Bull (Tokyo) 2015; 64:263-71. [PMID: 26699093 DOI: 10.1248/cpb.c15-00904] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Benzoxazinones and quinazolinones have a wide spectrum of biological activity. In this paper we focused on studying the antimicrobial and anti-inflammatory activities of some newly synthesized benzoxazinone and quinazolinone derivatives. Thus we prepared 2-[α-benzoylaminostyryl]-6,8-dibromo-3,1-benzoxazin-4(H)-one 2 which underwent a reaction with primary and secondary amines, and hydrazine hydrate to give compounds 3, 4 and 5, respectively. Treatment of 2 with hydroxylamine hydrochloride, formamide and/or NaN3/AcOH afforded compounds 7, 8, 11 and 12, respectively. Also, compound 2 reacted with maleic anhydride, aromatic hydrocarbons and/or active methylene compounds to produce compounds 13, 15a-c and 16, respectively. Most of the newly synthesized compounds showed significant antimicrobial and anti-inflammatory activities comparable to ampicillin, mycostatine and indomethacin positive controls.
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Niu X, Yang B, Fang S, Li Y, Zhang Z, Jia J, Ma C. An efficient one-pot synthesis of 1,2,4-triazoloquinoxalines. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.05.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Al-Salahi R, El-Tahir KE, Alswaidan I, Lolak N, Hamidaddin M, Marzouk M. Biological effects of a new set 1,2,4-triazolo[1,5-a]quinazolines on heart rate and blood pressure. Chem Cent J 2014; 8:3. [PMID: 24428932 PMCID: PMC3903009 DOI: 10.1186/1752-153x-8-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Accepted: 01/13/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Several quinazoline and triazole derivatives are reported to possess a wide-range of interesting pharmacological effects. Although various triazoloquinazoline subclasses having been synthesized and studied, the preparation of 1,2,4-triazolo[1,5-a]quinazolines as antihypertensive agent is still relatively unexplored. In continuation of our earlier research, we aimed at the synthesis and development of various potent antihypertensive 1,2,4-triazoloquinazoline derivatives. RESULTS A new series of 1,2,4-triazolo[1,5-a]quinazoline derivatives have been synthesized. Their structures were mainly established by spectroscopic methods of analysis (IR, MS, 1H and 13C NMR). Their in vivo antihypertensive activity was evaluated by tail cuff method using Muromachi Blood Pressure Monitor (Model MK 2000) for rats and mice. Some of the tested compounds were found to exhibit valuable effects in terms of heart rate and blood pressure. According to the biological results, some of tested derivatives have abolished completely the tachycardia of the parent compounds and may be studied and modified as potential adrenoblockers and cardiac stimulant. CONCLUSION New series of fifteen 1,2,4-triazolo[1,5-a]quinazolines were synthesized by convenient methodology from four key molecules, whereby their structures were established by advanced spectroscopic analyses. Some lead compounds have abolished completely the tachycardia of the parent compounds, that may be examined as potent adrenoblockers and some other compounds seem to be a cardiac stimulant or may be modified to enhance their hypotensive activity.
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Affiliation(s)
- Rashad Al-Salahi
- Department of Pharmacetical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Kamal-Eldin El-Tahir
- Department of Pharmacology, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Ibrahim Alswaidan
- Department of Pharmacetical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Nabih Lolak
- Department of Pharmaceutical Chemistry, College of Pharmacy, Aleppo University, Aleppo, Syria
| | - Mohammed Hamidaddin
- Department of Pharmacetical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Mohamed Marzouk
- Department of Pharmacetical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
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Antiviral activities of some synthesized methylsulfanyltriazoloquinazoline derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2013. [DOI: 10.1007/s11164-013-1177-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Al-Salahi R, Marzouk M, Awad G, Al-Omar M, Ezzeldin E. Antimicrobial activity of newly synthesized methylsulfanyl-triazoloquinazoline derivatives. ACTA ACUST UNITED AC 2013; 65:790-7. [PMID: 23647672 DOI: 10.1111/jphp.12039] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Accepted: 12/23/2012] [Indexed: 11/29/2022]
Abstract
OBJECTIVE The aim of this research was to study and evaluate the antimicrobial activity of a novel 2-methylsulfanyl-[1,2,4]triazolo[1,5-a]quinazoline and its derivatives. Antibacterial activity of the target compounds was tested against a variety of species of Gram-positive bacteria such as Staphylococcus aureus ATCC 29213, Bacillus subtilis ATCC6633, and Gram-negative bacteria such as Pseudomonas aeruginosa ATCC27953 and Escherichia coli ATCC 25922. In addition some yeast and fungi, Candida albicans NRRL Y-477 and Aspergillus niger, respectively, were screened. METHODS Antimicrobial tests were carried out by the agar well diffusion method, using 100 μl of suspension containing 1 × 10(8) CFU/ml of pathological tested bacteria, 1 × 10(6) CFU/ml of yeast, and 1 × 10(4) spore/ml of fungi spread on nutrient agar (NA), Sabourand dextrose agar (SDA), and potato dextrose agar (PDA), respectively. KEY FINDINGS The minimum inhibitory concentration (MIC) of the tested compounds was determined using the broth double dilution method (serially diluted technique) in proper nutrient. For comparison, ciprofloxacin and ketoconazole were used as antibacterial and antifungal reference drugs, respectively. Compounds 6, 9, 13, 14, and 11 were found to have the highest broad-spectrum antibacterial activity against S. aureus ATCC 29213, B. subtilis ATCC6633 and Gram-negative bacteria such as P. aeruginosa ATCC27953 and E. coli ATCC 25922 with MIC values of 6.25 and 12.50 μg/ml. CONCLUSIONS It was clear that many of the synthesized compounds exhibited good antimicrobial activity. This study has revealed that compounds 6, 9, 13, 14, and 11 have been disclosed as moderate antimicrobial agents. These compounds could be useful as templates for further development through modification or derivatization to design more potent antimicrobial agents.
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Affiliation(s)
- Rashad Al-Salahi
- Department of Pharmaceutical Chemistry, King Saud University, Riyadh, Saudi Arabia.
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Al-Salahi R, Marzouk M, Al-Omar MA, Amr AEGE, Ng SW, Tiekink ERT. 2-Methyl-sulfanyl-1,2,4-triazolo[1,5-a]quinazoline-5(4H)-thione. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o434. [PMID: 23476605 PMCID: PMC3588520 DOI: 10.1107/s1600536813004881] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Accepted: 02/19/2013] [Indexed: 11/10/2022]
Abstract
In the title compound, C10H8N4S2, comprising fused six-, six- and five-membered rings, the mol-ecule is close to being planar (r.m.s. deviation of the non-H atoms = 0.041 Å). The S-bound methyl group is folded away from the single N atom of the triazole ring and the NH group of the six-membered ring, allowing for the formation of centrosymmetric eight-membered {⋯HNCN}2 synthons in the crystal. The resulting inversion dimers are connected into supra-molecular stacks aligned along the b-axis direction by π-π inter-actions [centroid-centroid distances = 3.6531 (12) and 3.7182 (12) Å].
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Affiliation(s)
- Rashad Al-Salahi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mohamed Marzouk
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mohamed A. Al-Omar
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Abd El-Galil E. Amr
- Drug Exploration & Development Chair (DEDC), College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
- Applied Organic Chemistry Department, National Research Center, Dokki 12622, Cairo, Egypt
| | - Seik Weng Ng
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
- Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203 Jeddah, Saudi Arabia
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Al-Salahi RA, Gamal-Eldeen AM, Alanazi AM, Al-Omar MA, Marzouk MA, Fouda MMG. Cytotoxicity and anti-inflammatory activity of methylsulfanyl-triazoloquinazolines. Molecules 2013; 18:1434-46. [PMID: 23348996 PMCID: PMC6270609 DOI: 10.3390/molecules18021434] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2012] [Revised: 01/10/2013] [Accepted: 01/14/2013] [Indexed: 11/16/2022] Open
Abstract
A series of twenty five 2-methylsulfanyl-[1,2,4]triazolo[1,5-a]quinazoline derivatives 1-25 was previously synthesized. We have now investigated their cytotoxic effects against hepatocellular Hep-G2 and colon HCT-116 carcinoma cells and effect on the macrophage growth, in addition to their influence of the inflammatory mediators [nitric oxide (NO), tumor necrosis factor-α (TNF-α), prostaglandin E-2 (PGE-2) and in bacterial lipopolysachharide (LPS)-stimulated macrophages]. The findings revealed that compounds 13 and 17 showed the highest cytotoxicity and that 3, 6-8 and 25 are promising multi-potent anti-inflammatory agents.
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Affiliation(s)
- Rashad A Al-Salahi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia.
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Al-Salahi R, Geffken D, Bari A. 2-Eth-oxy-5-methylbis[1,2,4]triazolo[1,5-a:4',3'-c]quinazoline. Acta Crystallogr Sect E Struct Rep Online 2011; 68:o101. [PMID: 22259388 PMCID: PMC3254449 DOI: 10.1107/s1600536811052810] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Accepted: 12/07/2011] [Indexed: 12/02/2022]
Abstract
The title compound, C13H12N6O, is a functionalized ditriazoloquinazoline with substituted ethoxy and methyl groups attached at the 2-position of each triazole spacer. The fused-ring system is essentially planar [r.m.s. deviation = 0.016 (2) Å]. In the crystal, a weak C—H⋯N hydrogen bond connects the molecules into a chain along [101].
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