Studies on Disease-Modifying Antirheumatic Drugs: Synthesis of Novel Quinoline and Quinazoline Derivatives and Their Anti-inflammatory Effect
摘要:
In the course of our study aimed at developing new types of DMARDs (disease-modifying antirheumatic drugs), we found that quinoline derivative 1a had a potent anti-inflammatory effect in an adjuvant arthritis (AA) rat model, starting from the potent bone resorption inhibitors justicidins as the lead compounds. Further modification of la was performed, and various quinoline and quinazoline derivatives having a heteroaryl moiety on the alkyl side chain at the 2-position of the skeleton were prepared. These compounds were evaluated for antiinflammatory effects using the AA rat model. Most of these compounds, especially those having an imidazole or a triazole moiety on the 2-alkyl chain, exhibited a potent effect. Among the compounds synthesized, ethyl 4-(3,4-dimethoxyphenyl)-6,7-dimethoxy-2-(1,2,4-triazol-1-yl-methyl)quinoline-3-carboxylate (12d), having an ED(50) value of 2.6 mg/kg/day (anti-inflammatory effect in an AA rat model, po), was selected as a candidate for further investigation. In vitro, 12d inhibited mitogen-induced proliferation at 10(-7)-10(-5) M but not prostaglandin E(2) production at 10(-5) M. Moreover, 12d preferentially inhibited the IFN-gamma production by Th1-type clones over the IL-4 production by Th2-type clones. This preferential suppression of Th1 cytokine production is considered the essential immunomodulating action of 12d for the present. Synthesis and structure-activity relationships for this novel series of quinoline and quinazoline derivatives are detailed.
Quinoline or quinazoline derivatives, their production and use
申请人:Takeda Chemical Industries
公开号:US05436247A1
公开(公告)日:1995-07-25
A compound represented by the general formula: ##STR1## wherein Y represents a nitrogen atom or C--G (G represents a carboxyl group which may be esterified); ring R is a nitrogen-containing unsaturated heterocyclic group which may be substituted or unsubstituted; each of rings A and B may have a substituent; n represents an integer from 1 to 4; k represents the integer 0 or 1, or a salt thereof, which serves well as an anti-inflammatory agent, particularly a therapeutic agent for arthritis.
Pharmaceutical composition containing quinoline or quinazoline
申请人:Takeda Chemical Industries, Ltd.
公开号:US05719157A1
公开(公告)日:1998-02-17
The present invention provides a pharmaceutical composition for inhibiting bone resorption or for preventing or treating osteoporosis which comprises a quinoline or quinazoine derivative as an active ingredient.
Pharmaceutical composition containing quinoline or quinazoline derivatives
申请人:TAKEDA CHEMICAL INDUSTRIES, LTD.
公开号:EP0634169A1
公开(公告)日:1995-01-18
The present invention provides a pharmaceutical composition for inhibiting bone resorption or for preventing or treating osteoporosis which comprises a quinoline or quinazoine derivative as an active ingredient.