Synthesis and anti-inflammatory activity of 2,6-di-tert-butylphenols with a heterocyclic group at the 4-position. III.
作者:YASUO ISOMURA、SHUICHI SAKAMOTO、NORIKI ITO、HIROSHIGE HOMMA、TETSUSHI ABE、KAZUO KUBO
DOI:10.1248/cpb.32.152
日期:——
A series of 2, 6-di-tert-butylphenols with azoles at the 4-position was synthesized and evaluated for anti-arthritic activity in adjuvant-induced arthritis (AA) assay. Some compounds were also examined for anti-inflammatory activity in carrageenin-induced rat paw edema assay (CIPE) and for analgesic activity in AcOH-induced writhing assay in mice. 4-(3, 5-Di-tert-butyl-4-hydroxyphenyl)-5-methyl-2-oxo-4-imidazoline (6b) (25mg/kg. p.o.) had about the same activity as indomethacin (2mg/kg, p.o.) in AA assay. Compound 6b (25mg/kg, p.o.) was as potent as phenylbutazone (50mg/kg, p.o.) and indomethacin (3mg/kg, p.o.) in CIPE and showed low acute toxicity (>1000mg/kg, mouse, >400mg/kg, rat). Compound 6b had radical-scavenging activity in vivo and in vitro, and showed mild inhibitory activity on delayed-type hypersensitivity. Thus 6b is a promising candidate as a new anti-arthritic agent. Detailed pharmacologic studies of 6b are under way.
研究人员合成了一系列在 4 位具有唑类化合物的 2,6-二叔丁基苯酚,并在佐剂诱导的关节炎(AA)试验中评估了这些化合物的抗关节炎活性。一些化合物还在角叉菜胶诱导的大鼠爪水肿试验(CIPE)中进行了抗炎活性检测,并在 AcOH 诱导的小鼠蠕动试验中进行了镇痛活性检测。在 AA 试验中,4-(3, 5-二叔丁基-4-羟基苯基)-5-甲基-2-氧代-4-咪唑啉(6b)(25 毫克/千克,口服)与吲哚美辛(2 毫克/千克,口服)具有大致相同的活性。化合物 6b(25 毫克/千克,口服)在 CIPE 中的效力与苯基丁氮酮(50 毫克/千克,口服)和吲哚美辛(3 毫克/千克,口服)相同,并且显示出较低的急性毒性(小鼠大于 1000 毫克/千克,大鼠大于 400 毫克/千克)。化合物 6b 在体内和体外都具有自由基清除活性,并对迟发型超敏反应有轻微的抑制作用。因此,6b 很有希望成为一种新的抗关节炎药物。目前正在对 6b 进行详细的药理研究。