A solvent-free protocol for one pot conversion of Baylis Hillman acetates to pyridopyrimidinones
作者:R. Sreevani、A. Manjula、B. Vittal Rao
DOI:10.1002/jhet.560
日期:2011.5
A facile onepot transformation of BaylisHillmanacetates to pyrido[1,2‐a]pyrimidin‐2‐ones by reaction with 2‐amino pyridine in a total solvent‐free protocol is illustrated. The 3‐substituted‐2H‐pyrido[1,2‐a]pyrimidin‐2‐ones are obtained in pure form without involving any purification technique or solvent. J. Heterocyclic Chem., (2011).
Synthesis, cytotoxicity and hDHFR inhibition studies of 2H-pyrido[1,2-a]pyrimidin-2-ones
作者:Sreevani Rapolu、Manjula Alla、Roopa Jones Ganji、Venkateshwarlu Saddanapu、Chandan Kishor、Vittal Rao Bommena、Anthony Addlagatta
DOI:10.1039/c3md00013c
日期:——
Synthesis of the titled scaffolds was achieved by the condensation of Baylis–Hillman acetates with 2-aminopyridines under solvent-free conditions. Resulting compounds were evaluated for anticancer activity against five different cancer cell lines. Compounds 3c–g displayed low-micromolar inhibition with IC50 values ranging from 0.86 to 0.94 μM, and 3b, 3h, 3i and 3j between 8.6 and 9.8 μM against a neuroblastoma cell line (SK-n-SH). 3b, 3i and 3j inhibited the proliferation of breast cancer cells (MCF-7) at 10 μM. hDHFR inhibitory studies produced IC50 values of 2.7 and 3.1 μM for 3i and 3j, and 8.7 μM for 3o. Molecular docking studies established the mode of binding of these compounds into the methotrexate binding pocket of hDHFR. Structure–activity relationship studies indicate a clear preference for some substitutions over others.