申请人:Sancilio D. Frederick
公开号:US20050203115A1
公开(公告)日:2005-09-15
The present invention provides an ion pair compound of the formula [narcotic]
+
[A]
−
, wherein [narcotic]
+
represents at least one cation of at least one narcotic agent or one or more stereochemical isomers thereof and [A]
−
represents at least one anion of at least one NSAID or one or more stereochemical isomers thereof. An example of the ion pair compound is propoxyphene diclofenate. The ion pair compounds, or their pharmaceutical compositions, are useful in methods of treating a wide variety of conditions that indicate analgesics, anti-inflammatory agents, or both. Under the conditions prescribed for their use, the ion pair compounds exhibit poor or complete insolubility but excellent chemical stability in low pH environments, such as those found in the stomach. The ion pair compounds readily dissolve and dissociate in higher pH environments such as the small intestine to release the constituent narcotic and NSAID.
本发明提供了一种公式为[narcotic]+[A]−的离子对化合物,其中[narcotic]+代表至少一个麻醉剂或其一个或多个立体化学异构体的至少一个阳离子,而[A]−代表至少一个非甾体抗炎药(NSAID)或其一个或多个立体化学异构体的至少一个阴离子。离子对化合物的一个例子是丙氧芬双氯芬酸。这些离子对化合物或其药物组合物在治疗表明需要镇痛剂、抗炎剂或两者都需要的方法中是有用的。在规定的使用条件下,离子对化合物在低pH环境中表现出较差或完全不溶性,但在胃中这类环境中却具有极佳的化学稳定性。离子对化合物在较高pH值的环境中,如小肠,能够快速溶解和离解,以释放组成的麻醉剂和非甾体抗炎药。