Abstract New series of pyrazolo [1, 5-a] pyrimidine derivatives 7a–i, 11a–c and Schiff bases
13a–c were synthesized and screened for their in vitro antitumor activity against three …

A series of novel pyrazolo [1, 5‐a] pyrimidines were designed and synthesized in order to
find novel potent anti‐tumor compounds. The structures of all the compounds were …

Abstract The reaction of 5-amino-3-(4-methoxyphenylamino)-$ N $-aryl-1$ H $-pyrazole-4-
carboxamides\textbf {1a}--\textbf {c} with ethyl acetoacetate\textbf {2} and 2-(4 …

A series of new 6-arylpyrazolo [3, 4-d] pyrimidin-4-ones and 6-alkylpyrazolo [3, 4-d]
pyrimidin-4-ones were synthesized. Some of the newly synthesized compounds were tested …

A series of N-aryl-7-aryl-pyrazolo [1, 5-a] pyrimidines 18a–u and N-aryl-pyrazolo [1, 5-a]
quinazolines 25a–c were designed and synthesized via the reaction of 5-aminopyrazoles …

A new series of pyrazole 4–7 and pyrazolo [1, 5-a] pyrimidine 8–13 were synthesized by
using a simple, efficient procedure, and screened for their in-vitro antimicrobial and …

5‐Amino‐1‐p‐tolyl‐1H‐pyrazole‐4‐carbonitrile (1) was used for the preparation of some
novel pyrazoles and pyrazolo [3, 4‐d] pyrimidines 2–10. Moreover, the cytotoxicity and in …

Abstract The reaction of 5-amino-3-(arylamino)-1 H-pyrazole-4-carboxamides 1a, b with
acetylacetone 2 and arylidenemalononitriles 5a–c yielded the pyrazolo [1, 5-a]-pyrimidine …

3, 6-Dimethyl-1-phenyl-1 H-pyrazolo [3, 4-d][1, 3] oxazin-4-one (3) was prepared by
hydrolysis of ethyl 5-amino-3-methyl-1-phenyl-1 H-pyrazole-4-carboxylate (1) to afford the …

A new series of pyrazolo [3, 4-d] pyrimidines has been synthesized. The new compounds
were tested for their antitumor activity on 60 different cell lines, and some of the compounds …