Synthesis, anti-inflammatory and neuroprotective activity of pyrazole and pyrazolo[3,4-d]pyridazine bearing 3,4,5-trimethoxyphenyl
作者:Mashooq A. Bhat、Atallah F. Ahmed、Zhi-Hong Wen、Mohamed A. Al-Omar、Hatem A. Abdel-Aziz
DOI:10.1007/s00044-017-1870-5
日期:2017.7
declined maximally to 42.8 ± 1.4% by one of the pyrazolo[3,4-d]pyridazine compounds (5d). Moreover, the neuroprotective activity of the less cytotoxic compounds 4b, (4e–g) and (5a–g) were evaluated against 6-hydroxydopamine (6-OHDA)-induced neuroblastoma SH-SY5Y cell death and exhibited significant (p < 0.05) cell protection. The pyrazolo[3,4-d]pyridazine compound (5e) exhibited more than 100% of relative
合成了一系列新的带有3,4,5-三甲氧基苯基的吡唑(4a–g)和吡唑并[3,4-d]哒嗪(5a–g)支架。根据元素分析和光谱分析对新合成的化合物进行了表征。评估了它们对脂多糖刺激的鼠RAW 264.7巨噬细胞中促炎性一氧化氮合酶和环氧合酶2蛋白表达的抑制活性,并显示了多种功效。相对于生物活性吡唑衍生物4b,4c,所有吡唑并[3,4-d]哒嗪化合物(5a–g)均强烈下调脂多糖诱导的一氧化氮合酶表达至20.3±0.6–51.3±3.5%的范围内4e和4g。除无活性化合物4c和4d外,所有其他合成的化合物均会在脂多糖刺激的细胞中抑制环氧合酶2的表达低于100%,而其中一种吡唑并[3,4-d]使其最大降低至42.8±1.4%。哒嗪化合物(5d)。此外,评估了对细胞毒性较小的化合物4b,(4e–g)和(5a–g)对6-羟基多巴胺(6-OHDA)诱导的神经母细胞瘤SH-SY5Y细胞死亡的神经保护活性,并显示出显着的(p