2‐benzylidene‐7‐methyl‐3‐oxo‐5‐phenyl‐2,3‐dihydro‐5H‐thiazolo[3,2‐a]pyrimidine‐6‐carboxylic acid methyl esters were synthesized and characterized by spectral, crystallographic, and elemental analysis. The antiinflammatory activity of the compounds was tested by the carrageenan hind paw edema test. It was found that compound 6a having a 2‐methoxyphenyl group at position 5 and a benzylidene group at position 2 was
Interplay of Halogen and Hydrogen Bonding through Co–Crystallization in Pharmacologically Active Dihydropyrimidines: Insights from Crystal Structure and Energy Framework
作者:Keshab M. Bairagi、Kapil S. Ingle、Rohit Bhowal、Smital A. Mohurle、Avantika Hasija、Osama I. Alwassil、Katharigatta N. Venugopala、Deepak Chopra、Susanta K. Nayak
DOI:10.1002/cplu.202100259
日期:2021.8
co-crystals in substituted dihydropyrimidines (DHPM) that constitutes pharmacologically active compounds. These were characterized using FT-IR, PXRD, and single-crystal X-ray diffraction. In order to explore the possibility of formation of halogen (XB) and hydrogen bonding (HB) synthons in the solid state, co-crystallization attempts of differently substituted DHPM molecules, containing nitro, hydoxy, and
A reactant promoted solvent free synthesis of 3,4-dihydropyrimidin-2(1 H )-thione analogues using ammonium thiocyanate
作者:Chetan K. Khatri、Santoshkumar M. Potadar、Ganesh U. Chaturbhuj
DOI:10.1016/j.tetlet.2017.03.070
日期:2017.5
as a self-promoting reactant for the synthesis of 3,4-dihydropyrimidin-2(1H)-thiones. This report describes a greener, efficient and economic protocol for one pot three-componentsynthesis of Biginelli compounds using various aldehydes, β-ketoesters and ammonium thiocyanate. Ammonium thiocyanate being a weak acid, accelerate the rate of reaction to obtain Biginelli compounds in solvent-free condition
Larvicidal study of tetrahydropyrimidine scaffolds against<i>Anopheles arabiensis</i>and structural insight by single crystal X-ray studies
作者:Keshab M. Bairagi、Katharigatta N. Venugopala、Pradip Kumar Mondal、Raquel M. Gleiser、Deepak Chopra、Daniel García、Bharti Odhav、Susanta K. Nayak
DOI:10.1111/cbdd.13351
日期:2018.12
against Anopheles arabiensis. These newly synthesized compounds were characterized by spectral studies such as FT‐IR, NMR (1H and 13C), LC‐MS, and elemental analysis. The conformational features and supramolecular assembly of molecules 4a, 4b, and 4e were further analyzed from single crystalX‐ray study. The larvicidal activity of these tetrahydropyrimidine pharmacophore series was analyzed based on
Antidiabetic Activity of Dihydropyrimidine Scaffolds and Structural Insight by Single Crystal X-ray Studies
作者:Keshab M. Bairagi、Nancy S. Younis、Promise M. Emeka、Ekta Sangtani、Rajesh G. Gonnade、Katharigatta N. Venugopala、Osama I. Alwassil、Hany E. Khalil、Susanta K. Nayak
DOI:10.2174/1573406416666191227123048
日期:2020.11.6
streptozotocin (STZ) induced diabetic rat model. The newly synthesized compounds were characterized by using FT-IR, melting point, 1H and 13C NMR analysis. The crystal structure and supramolecular features were analyzed through single-crystal X-ray study. Anti-diabetic activity testing of newly prepared DHPM scaffolds was mainly based on their relative substituent on the phenyl ring along with urea and