Synthesis and Pharmacological Evaluation of Oligoethylene Ester Derivatives as Indomethacin Oral Prodrugs
作者:Paolo De Caprariis、Francesco Palagiano、Franco Bonina、Lucia Montenegro、Michele D'Amico、Francesco Rossi
DOI:10.1002/jps.2600831112
日期:1994.11
Five indomethacin oligoethylene ester derivatives (3-7) were synthesized and evaluated for their anti-inflammatory, analgesic, and ulcerogenic activity after oral administration. The molecular weight of the oligoethylene glycols used for synthesizing esters 3-7 ranged from 106 to 282. The chemical and enzymatic stabilities of esters 3-7 were evaluated in pH 7.4 and 2.0 buffers and in human plasma,
合成了五种吲哚美辛低聚亚乙基酯衍生物(3-7),并在口服后评估了它们的抗炎,镇痛和促溃疡活性。用于合成酯3-7的低聚乙二醇的分子量范围为106至282。分别在pH 7.4和2.0缓冲液中以及在人血浆中评估了酯3-7的化学和酶稳定性。所有前药在pH 7.4磷酸盐缓冲液和pH 2.0缓冲液中均显示出良好的稳定性,并且易于被人血浆水解。酯3-7显示出抗炎活性,其确定为角叉菜胶诱导的水肿的抑制百分比,与消炎痛相似,尽管剂量更高。从扭曲的测试结果来看,我们观察到与消炎痛相比,所有前药均表现出更好或相似的镇痛活性。口服后,酯3-7对胃粘膜的刺激性明显比吲哚美辛低,而酯3-5虽然以比吲哚美辛更高的剂量给药,但未显示任何致溃疡活性。