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Savant MM, Ladva KD, Pandit AB. Facile synthesis of highly functionalized novel pyrazolopyridones using oxoketene dithioacetal and their anti-HIV activity. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1458239] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Mahesh M. Savant
- Department of Industrial Chemistry, Shree M. & N. Virani Science College, Rajkot, Gujarat, India
| | - Kartik D. Ladva
- Department of Chemistry, Shree M. & N. Virani Science College, Rajkot, Gujarat, India
| | - Archna B. Pandit
- Department of Chemistry, Shree M. & N. Virani Science College, Rajkot, Gujarat, India
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Substituted pyridopyrimidinones, Part IV: 2-chloro-4h-pyrido[1,2-a]pyrimidin-4-one as a synthone of some new heterotricycles. JOURNAL OF THE SERBIAN CHEMICAL SOCIETY 2010. [DOI: 10.2298/jsc1001011a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
2-Chloro-4H-pyrido[1,2-a]pyrimidin-4-one (1) was utilized as a synthone precursor to prepare novel heterotricyclic systems. 2-Azido and 2-hydrazino derivatives (2 and 3) were obtained by nucleophilic replacement evolving compound 1. The hydrazine derivative 3 was transformed into the azido derivative 2 by nitrosation. Treatment of compound 3 with [bis(methylthio)methylene] malononitrile afforded 2-pyrazolylpyridopyrimidine 4. When compound 1 was reacted with 5-amino-3-(methylthio)-1H-pyrazole-4-carbonitrile, the same compound 4 was obtained with no evidence for the production of (pyrazolylamino) pyridopyrimidine 5 or pyrazolodipyridopyrimidine 6. Poly-functionalized dipyridopyrimidine 8 was obtained by reaction of compound 1 with 2-[(methylthio)-( phenylamino)methylene]propanedinitrile. Cyanoguanidine was reacted with compound 1 to afford N-pyridopyrimidinylguanidine 9, which was subjected to cyclization reaction, in presence of piperidinium acetate, to give pyridopyrimidopyrimidine 10.
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Affiliation(s)
- Turan Ozturk
- Istanbul Technical University, Science Faculty, Chemistry Department, Organic Chemistry, 34469 Maslak, Istanbul, Turkey.
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Abass M, Abdel‐Megid M, Hassan M. Substituted Quinolinones, Part 12: Heterocyclization Reactions of 3‐(3‐Chromonyl)acryloylquinolinone with Some Bifunctional Nucleophiles. SYNTHETIC COMMUN 2007. [DOI: 10.1080/00397910601033930] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Mohamed Abass
- a Department of Chemistry, Faculty of Education , Ain Shams University , Roxy, Heliopolis, Cairo, Egypt
| | - Mohamed Abdel‐Megid
- a Department of Chemistry, Faculty of Education , Ain Shams University , Roxy, Heliopolis, Cairo, Egypt
| | - Mohamed Hassan
- a Department of Chemistry, Faculty of Education , Ain Shams University , Roxy, Heliopolis, Cairo, Egypt
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5
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El-Emary TI, Khodairy A. Synthesis of Thiazolo[5,4-d]pyrimidine, Thiazolo[5,4-b]pyridine, Thiazolo[4,5-b]pyrrolizine and Thiazolo[5,4-d]thiazaphosphinine. PHOSPHORUS SULFUR 2006. [DOI: 10.1080/10426500500326362] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Chapter 6.3 Triazines, tetrazines and fused ring polyaza systems. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/s0959-6380(05)80056-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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