Efficient Synthesis of New Pyrimido[5′,4′:5,6]pyrano[2,3-d]pyrimidine-2,4,6(1H,3H)-triones via the Tandem Intramolecular Pinner–Dimroth Rearrangement, and Their Antibacterial Activity
- Authors: Asadian M.1, Davoodnia A.1, Beyramabadi S.A.1
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Affiliations:
- Department of Chemistry, Mashhad Branch
- Issue: Vol 88, No 12 (2018)
- Pages: 2658-2663
- Section: Article
- URL: https://journals.rcsi.science/1070-3632/article/view/222613
- DOI: https://doi.org/10.1134/S1070363218120290
- ID: 222613
Cite item
Abstract
Synthesis of new 8-alkyl-5-aryl-1,3-dimethyl-5,7-dihydro-2H-pyrimido[5′,4′:5,6]pyrano[2,3-d]- pyrimidine-2,4,6(1H,3H)-triones by the high yield reaction of 7-amino-5-aryl-1,3-dimethyl-2,4-dioxo-1,3,4,5- tetrahydro-2H-pyrano[2,3-d]pyrimidine-6-carbonitriles with aliphatic carboxylic acids in the presence of POCl3 is presented. It is probable that synthesis of these new products proceeds via the tandem intramolecular Pinner–Dimroth rearrangement. The products are characterized by FT-IR, 1H, and 13C NMR spectra and evaluated for their antibacterial activity against gram +ve bacteria (Staphylococcus aureus and Staphylococcus epidermidis) and gram–ve bacteria (Escherichia coli and Pseudomonas aeruginosa) using the disc diffusion method.
About the authors
M. Asadian
Department of Chemistry, Mashhad Branch
Email: adavoodnia@mshdiau.ac.ir
Iran, Islamic Republic of, Mashhad, 9175687119
A. Davoodnia
Department of Chemistry, Mashhad Branch
Author for correspondence.
Email: adavoodnia@mshdiau.ac.ir
Iran, Islamic Republic of, Mashhad, 9175687119
S. A. Beyramabadi
Department of Chemistry, Mashhad Branch
Email: adavoodnia@mshdiau.ac.ir
Iran, Islamic Republic of, Mashhad, 9175687119