Bifunctional pro-drugs of disodium cromoglycate (DSCG), incorporating both lipophilic and hydrophilic pro-moieties, were desined to improve the oral absorption of DSCG, an antiallergic agent used clinically. The synthesized pro-drugs were found to prossess the desired properties for an orally active pro-drug. Among the pro-drugs tested, KY-556 (carrying twin ethyl pro-moieties and an L-lysyl pro-moiety) was particularly well absorbed orally and, as expected, displayed good antiallergic activity in the rat passive cutaneous anaphylaxis test.
为了改善临床上使用的抗过敏药物
色甘酸钠(
DSCG)的口服吸收,我们设计了同时具有亲脂性和亲
水性的双功能原药。合成的原药具有口服活性原药所需的特性。在测试的原药中,KY-556(含有两个乙基原药和一个 L-赖
氨酰原药)的口服吸收性特别好,而且正如预期的那样,在大鼠被动皮肤过敏试验中显示出良好的抗过敏活性。