Syntheses and evaluation of the antioxidant activity of acitretin analogs with amide bond(s) in the polyene spacer
作者:Dimitra Hadjipavlou-Litina、George E. Magoulas、Marios Krokidis、Dionissios Papaioannou
DOI:10.1016/j.ejmech.2009.10.012
日期:2010.1
Ester analogs of the antipsoriatic drug acitretin were synthesized by coupling either anilines with N-protected indole-3-carboxylic acid, followed by deprotection and coupling with O-monoprotected dicarboxylic acids or Wittig reaction of indole-3-carboxaldehyde, 3-acetyl-1-tosylpyrrole and 4-amino-9-fluorenone with Ph3PCHCO2tBu, followed by N-deprotection, where necessary, and finally coupling with
通过将苯胺与N-保护的吲哚-3-羧酸偶联,然后脱保护并与O-单保护的二羧酸偶联或吲哚-3-甲醛,3-乙酰基-1的Wittig反应合成抗银屑病药物阿维A酸酯的酯类似物。 -甲苯磺酰基吡咯和4-氨基-9-芴酮与Ph 3 P CHCO 2 tBu,然后在必要时进行N-脱保护,最后与肉桂酰氟偶合。通过TFA介导的羧基脱保护得到相应的游离酸。虽然这些类似物和阿维A表现出非常低的还原能力,类似物5,6,8和12强烈抑制LOX带IC 50值范围从35–65μM。阿维A和它的类似物5 - 7,10,11和15抑制脂质过氧化的比更强烈水溶性维生素E而阿维A和模拟4是在体内更有效的抗发炎剂上诱导卡拉胶比吲哚美辛的大鼠爪水肿。