There is disclosed a pharmaceutical composition for providing antiinflammatory, antipyretic, analgesic, antiallergic, immunosuppressing or immunomodulating activity which comprises a pyridine derivative of the formula (I): ##STR1## wherein R is an optionally substituted pyridine ring, X is a oxygen atom or --S(O)n--, wherein n is 0, 1 or 2, A is a bivalent C.sub.1-15 hydrocarbon residue whose branched moiety may have a substituent, Y is an oxygen or sulfur atom, R.sub.3 is a hydrogen atom or an optionally substituted hydrocarbon residue, R.sub.4 is an optionally substituted hydrocarbon residue or an optionally substituted monocyclic or bicyclic heterocyclic group, R.sub.3 and R.sub.4 may be joined together with the carbamoyl group or the thiocarbamoyl group to which they are attached to form an optionally substituted heterocyclic group, or R.sub.3 or R.sub.4 may be independently attached to A to form a ring, or a pharmaceutically acceptable salt or solvate thereof, and a pharmaceutically acceptable carrier or diluent.
本发明揭示了一种药物组合物,用于提供抗炎、退热、镇痛、抗过敏、免疫抑制或免疫调节活性,其包含式(I)的
吡啶衍生物:##STR1## 其中,R是可选取代的
吡啶环,X是氧原子或--S(O)n--,其中n为0、1或2,A是二价的C.sub.1-15烃基残基,其支链部分可能有取代基,Y是氧或
硫原子,R.sub.3是氢原子或可选取代的烃基残基,R.sub.4是可选取代的烃基残基或可选取代的单环或双环杂环基,R.sub.3和R.sub.4可与它们附着的
氨基甲酰基或
硫氨基甲酰基结合在一起,形成可选取代的杂环基,或R.sub.3或R.sub.4可独立地附着在A上形成环,或其药学上可接受的盐或溶剂,以及药学上可接受的载体或稀释剂。