4-Nitroso-3-trifluoromethyl-5-alkyl[(het)aryl]pyrazoles were synthesized via one-pot nitrosation of 1,3-diketones or their lithium salts followed by treatment of hydrazines. Reduction of nitroso-derivatives made it possible to obtain 4-amino-3-trifluoromethylpyrazoles chlorides. According to computer-aided calculations, all synthesized compounds are expected to have acceptable ADME profile for drug design. Tuberculostatic, antibacterial, antimycotic, antioxidant and cytotoxic activities of the compounds were evaluated in vitro, while their analgesic and anti-inflammatory action was tested in vivo along with acute toxicity studies. N-Unsubstituted 4-nitrosopyrazoles were the most effective tuberculostatics (MIC to 0.36 μg/ml) and antibacterial agents against Streptococcus pyogenes (MIC to 7.8 μg/ml), Staphylococcus aureus, S. aureus MRSA and Neisseria gonorrhoeae (MIC to 15.6 μg/ml). 4-Nitroso-1-methyl-5-phenylpyrazole had the pronounced antimycotic action against a wide range of fungi (Trichophyton rubrum, T. tonsurans, T. violaceum, T. interdigitale, Epidermophyton floccosum, Microsporum canis with MIC 0.38–12.5 μg/ml). N-Unsubstituted 4-aminopyrazoles shown high radical-scavenging activity in ABTS test, ORAC/AAPH and oxidative erythrocyte hemolysis assays. 1-Methyl-5-phenyl-3-trifluoromethylpyrazol-4-aminium chloride revealed potential anticancer activity against HeLa cells (SI > 1351). The pronounced analgesic activity was found for 4-nitroso- and 4-aminopyrazoles having phenyl fragment at the position 5 in “hot plate” test. The most of the obtained pyrazoles had a moderate acute toxicity.

通过1，3-二酮或其锂盐的一锅式亚硝化，然后处理肼，合成了4-亚硝基-3-三氟甲基-5-烷基[（杂）芳基]吡唑。亚硝基衍生物的还原使得可以获得4-氨基-3-三氟甲基吡唑氯化物。根据计算机辅助计算，所有合成的化合物均有望在药物设计中具有可接受的ADME谱。抗结核，该化合物的抗菌，抗真菌剂，抗氧化剂和细胞毒活性进行评价体外，而它们的镇痛和抗炎作用进行了测试体内急性毒性研究沿。N-未取代的4-亚硝基吡唑类是最有效的抗结核药（MIC至0.36μg/ ml）和抗菌剂化脓性链球菌（MIC至7.8μg/ ml），金黄色葡萄球菌， S . 金黄色葡萄球菌MRSA和淋病奈瑟氏球菌（MIC至15.6μg/ ml）。4-亚硝基-1-甲基-5-苯基吡唑具有对宽范围的真菌的显着抗真菌作用（Ť richophyton 癣菌，断发毛T.，T.堇色，T.趾间，E pidermophyton 癣菌，男icrosporum 犬MIC 0.38–12.5μg/ ml）。N-未取代的4-氨基吡唑类化合物在ABTS测试，ORAC / AAPH和氧化性红细胞溶血分析中显示出较高的自由基清除活性。1-甲基-5-苯基-3-三氟甲基吡唑-4-氯化铵显示出对HeLa细胞的潜在抗癌活性（SI> 1351）。在“热板”试验中，发现在第5位具有苯基片段的4-亚硝基和4-氨基吡唑具有明显的镇痛活性。所获得的大多数吡唑具有中等急性毒性。