Pharmaceutical compositions of the prodrug type, a process for the preparation thereof, a process for the preparation of them as prodrug functioning compounds and compounds obtained therein
申请人:N.V. Gantax Pharmaceutica
公开号:EP0202703A1
公开(公告)日:1986-11-26
Pharmaceutical compositions of the prodrug type, a process for the preparation thereof, a process for the preparation of the as prodrug functioning compounds and compounds obtained herein.
The pharmaceutical compositions of the inven-' tion contain organic acid anhydrides with formula 1 through 5, as well as the pharmacological acceptable salts thereof as prodrug functioning compounds, together with a suitable pharmaceutically acceptable gaseous,liquid or solid carrier.
The prodrug systems of the invention possess as favourable property that they amend the residence time of the pharmaceutical composition in the body by influencing the transport system.
Furthermore they increase the biological availability because of the more lipophilic properties of the anhydride compared with the acid, so that this improved administration performance may contribute to lower dosages.
Further the prodrug systems according to the invention contribute to the reduction of the complaints of patients, because the systems usually remove the unpleasant bitter taste and the flavour, whereas the gastro intestinal irritation of the organic acids is removed or reduced.
原药型药物组合物、其制备工艺、制备作为原药功能化合物的工艺以及在此获得的化合物。
本发明的药物组合物含有式 1 至式 5 的有机酸酸酐及其作为原药作用化合物的药学上可接受的盐,以及合适的药学上可接受的气体、液体或固体载体。
本发明的原药系统具有通过影响运输系统来延长药物组合物在体内停留时间的有利特性。
此外,由于酸酐与酸相比具有更强的亲脂性,它们还能提高生物利用率,因此,这种改进的给药性能可能有助于降低用药剂量。
此外,根据本发明的原药系统还有助于减少病人的抱怨,因为这些系统通常会消除令人不愉快的苦味和香味,同时消除或减少有机酸对胃肠道的刺激。