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  • Title: Microwave-assisted synthesis of pyrimido[4,5-b][1,6]naphthyridin-4(3H)-ones with potential antitumor activity.
    Author: Insuasty B, Becerra D, Quiroga J, Abonia R, Nogueras M, Cobo J.
    Journal: Eur J Med Chem; 2013 Feb; 60():1-9. PubMed ID: 23279862.
    Abstract:
    The 6,7,8,9-tetrahydropyrimido[4,5-b][1,6]naphthyridin-4(3H,5H,10H)-ones 4,5a-g and their oxidized forms 6,7a-g were obtained from the catalyst-free reaction of 6-amino-2-methylthiopyrimidin-4(3H)-one 3 and (E)-3,5-bis(benzylidene)-1-alkyl-4-piperidones 1,2a-g under Microwave irradiation and their subsequent oxidation process with p-chloranil. Eighteen of the new compounds were evaluated in the US National Cancer Institute (NCI), where compound 4g presented a remarkable activity against 57 cancer cell lines, with the most important GI(50) values ranging from 1.48 to 9.92 μM from in vitro assays.
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