Molecules 2014, 19(3), 3297-3309; doi:10.3390/molecules19033297
Article

Synthesis and Anticancer Activity of Some New Pyrazolo[3,4-d]pyrimidin-4-one Derivatives

1email, 1email, 1email, 2email and 1,* email
Received: 31 December 2013; in revised form: 27 February 2014 / Accepted: 5 March 2014 / Published: 18 March 2014
(This article belongs to the Section Organic Synthesis)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: 3,6-Dimethyl-1-phenyl-1H-pyrazolo[3,4-d][1,3]oxazin-4-one (3) was prepared by hydrolysis of ethyl 5-amino-3-methyl-1-phenyl-1H-pyrazole-4-carboxylate (1) to afford the corresponding carboxylic acid 2, which was reacted with acetic anhydride to give 3. The pyrazolo[3,4-d][1,3]oxazin-4-one 3 was reacted with hydroxylamine hydrochloride, urea, thiourea, thiosemicarbazide, phenylhydrazine and aromatic amines to afford the corresponding pyrazolo[3,4-d]pyrimidin-4-ones 4, 5a,b, 6, 7, 8ae, respectively. Condensation of pyrazoloxazine derivative 3 with 99% hydrazine hydrate afforded the 5-aminopyrazolo[3,4-d] pyrimidine derivative 9. Coupling of 9 with aromatic aldehydes yielded a series of 3,6-dimethyl-5-(4-substitutedbenzylideneamino)-1-phenyl-1,5-dihydropyrazolo[3,4-d]pyrimidin- 4-ones 10ae. The new compounds were tested for their antitumor activity on the MCF-7 human breast adenocarcinoma cell line. Almost all the tested compounds revealed antitumor activity, especially 3,6-dimethyl-5-(4-nitrobenzylideneamino)-1-phenyl-1,5-dihydropyrazolo[3,4-d]pyrimidin-4-one (10e) which displayed the most potent inhibitory activity with a half maximal inhibitory concentration (IC50) of 11 µM.
Keywords: pyrazolo[3,4-d]pyrimidin-4-one; anticancer activity; MCF7
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MDPI and ACS Style

Abdellatif, K.R.A.; Abdelall, E.K.A.; Abdelgawad, M.A.; Ahmed, R.R.; Bakr, R.B. Synthesis and Anticancer Activity of Some New Pyrazolo[3,4-d]pyrimidin-4-one Derivatives. Molecules 2014, 19, 3297-3309.

AMA Style

Abdellatif KRA, Abdelall EKA, Abdelgawad MA, Ahmed RR, Bakr RB. Synthesis and Anticancer Activity of Some New Pyrazolo[3,4-d]pyrimidin-4-one Derivatives. Molecules. 2014; 19(3):3297-3309.

Chicago/Turabian Style

Abdellatif, Khaled R.A.; Abdelall, Eman K.A.; Abdelgawad, Mohamed A.; Ahmed, Rasha R.; Bakr, Rania B. 2014. "Synthesis and Anticancer Activity of Some New Pyrazolo[3,4-d]pyrimidin-4-one Derivatives." Molecules 19, no. 3: 3297-3309.

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