Analogues of N,1-diphenyl-4,5-dihydro-1H-[1]benzothiepino[5,4-c]pyrazole-3-carboxamide and N,1-diphenyl-4,5-dihydro-1H-[1]benzothiepino[5,4-c]pyrazole-3-carboxamide-6,6-dioxide: syntheses, characterization, antimicrobial, antituberculosis, and antitumor activity
作者:Pandaram Palanisamy、Sudalaiandi Kumaresan
DOI:10.1039/c3ra23124k
日期:——
A series of N,1-diphenyl-4,5-dihydro-1H-[1]benzothiepino[5,4-c]pyrazole-3-carboxamides (11a–m) and N,1-diphenyl-4,5-dihydro-1H-[1]benzothiepino[5,4-c]pyrazole-3-carboxamide-6,6-dioxides (12a–m) were synthesized by varying the active part (carboxamide group) of the pyrazole and were characterized by IR, 1H-NMR, 13C-NMR, mass spectral data, and elemental analyses. All compounds were evaluated for their antibacterial and antifungal activity. Compounds 11k and 12k showed higher activity than chloroamphenicol against Klebsiella pneumonia and Escherichia coli. Compounds 11b, 11c, 11l, 12b, 12c, and 12l displayed higher activity towards amikacin in inhibiting the growth of Escherichia coli (MIC 3.125 mg mL−1). Compounds 11k and 12k were equipotent to clotrimazole in inhibiting the growth of Candida albicans (MIC 3.125 mg mL−1). All compounds were screened for their cytotoxic activity against two tumor cell lines, namely the human colon tumor cell line (HCT116) and human cervical cancer cell line (HeLa). Most of the test compounds exhibited potent antitumor activity, especially compounds 11k and 12k, which displayed the highest activity among the test compounds with an IC50 equal to 18 and 12 μM for HeLa cells, and 16 and 10 μM for HCT116 cells, respectively. All the synthesized compounds showed low to moderate inhibitory activities against M. tuberculosis (MTB) H37Rv, whereas 11k and 12k were found to be more active against M. tuberculosis, with MIC values of 8.2 and 7.8 μM, compared to other analogues.
通过改变
吡唑的活性部分(羧
酰胺基团),合成了一系列 N,1
-二苯基-4,5-二
氢-1H-[1]
苯并噻吩并[5,4-c]
吡唑-3-甲
酰胺(11a-m)和 N,1
-二苯基-4,5-二
氢-1H-[1]
苯并噻吩并[5,4-c]
吡唑-3-甲
酰胺-6、通过改变
吡唑的活性部分(羧
酰胺基团)合成了 6-二
氧化物(12a-m),并通过红外光谱、1H-NMR、13C-NMR、质谱数据和元素分析对其进行了表征。对所有化合物的抗菌和抗真菌活性进行了评估。化合物 11k 和 12k 对肺炎克雷伯氏菌和大肠埃希氏菌的活性高于
氯霉素。与
阿米卡星相比,化合物 11b、11c、11l、12b、12c 和 12l 在抑制大肠杆菌生长方面表现出更高的活性(MIC 3.125 毫克/毫升-1)。化合物 11k 和 12k 在抑制白色念珠菌生长方面的活性与
克霉唑相当(MIC 3.125 毫克/毫升-1)。筛选了所有化合物对两种肿瘤
细胞系(即人类结肠肿瘤
细胞系(HCT116)和人类宫颈癌
细胞系(HeLa))的细胞毒活性。大多数测试化合物都表现出了强大的抗肿瘤活性,尤其是化合物 11k 和 12k,它们在测试化合物中表现出了最高的活性,对 HeLa 细胞的 IC50 分别为 18 和 12 μM,对 HCT116 细胞的 IC50 分别为 16 和 10 μM。所有合成的化合物对结核杆菌(
MTB)H37Rv 都显示出低到中等程度的抑制活性,而 11k 和 12k 与其他类似物相比,对结核杆菌更具活性,其 MIC 值分别为 8.2 和 7.8 μM。