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 …

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 …

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 …

Starting from 4, 6-dimethyl-2-oxo-(1H)-3-pyridinecarbonitrile 1 and 3-aminopyrazolopyridine
4, a series of cyanopyri-dine derivatives 3a-i, Schiff bases 5a-f, urea and thiourea derivatives …

Amino-N-aryl-3-[(4-methoxyphenyl) amino]-1 H-pyrazole-4-carboxamides 4a–c were
synthesized by the reaction of N-(aryl)-2-cyano-3-[(4-methoxyphenyl)-amino]-3-(methylthio) …

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 novel series of Bis-Schiff bases of pyrazoles 9–24 were synthesized by the direct
condensation of 5-aminopyrazoles 4a–d with dialdehydes 8a–d in ethanol. The newly …

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 …

A novel series of pyrazolo [1, 5-a] pyrimidine-3-carbonitriles substituted with 7-amino, 7-
substituted amino and 5-substituted amino groups was synthesized. Some of the newly …

Synthesis and biological evaluation of novel pyrazoles and pyrazolo [3, 4‐d] pyrimidines are
reported. Fourteen compounds were selected by the NCI and tested for their preliminary in …