Ekhlass Nassar, Yaser A El- Badry, Afaf MM Eltoukhy and Rezek R Ayyad
The target compounds 1-(4-(1H-indol-3-yl)-6-(4-methoxyphenyl)pyrimidin-2-yl)hydrazine (5) was synthesized by reacting 6-(1H-Indol-3-yl)-4-(4-methoxyphenyl)pyrimidine-2(1H)-thione 4 with hydrazine hydrate. Compound 5 was used as a precursor for the synthesis of new pyrazolo pyrimidine derivatives 6-9. Moreover, the 5-amino-1H-pyrazole-4-carbonitrile derivative 6 was then converted into another set of novel compounds 10-14. On the other hand a series of transformations were carried out using the newly synthesized 1-(4-(1H-indol-3-yl)-6-(4-methoxyphenyl) pyrimidin-2-yl)-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one (11) to afford the pyrazolo pyrimidine derivatives 15-18. Antiproliferatve activities for some of the newly synthesized compounds were evaluated.
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