Chemometric modeling of 5-Phenylthiophenecarboxylic acid derivatives as anti-rheumatic agents.
Arthritis involves joint inflammation, synovial proliferation and damage of cartilage. Interleukin-1 undergoes acute and chronic inflammatory mechanisms of arthritis. Non-steroidal anti-inflammatory drugs can produce symptomatic relief but cannot act through mechanisms of arthritis. Diseases modifying anti-rheumatoid drugs reduce the symptoms of arthritis like decrease in pain and disability score, reduction of swollen joints, articular index and serum concentration of acute phage proteins. Recently, some literature references are obtained on molecular modeling of antirheumatic agents. We have tried chemometric modeling through 2D-QSAR studies on a dataset of fifty-one compounds out of which forty-four 5-Phenylthiophenecarboxylic acid derivatives have IL-1 inhibitory activity and forty-six 5-Phenylthiophenecarboxylic acid derivatives have %AIA suppressive activity. The work was done to find out the structural requirements of these anti-rheumatic agents. 2D QSAR models were generated by 2D and 3D descriptors by using multiple linear regression and partial least square method where IL-1 antagonism was considered as the biological activity parameter. Statistically significant models were developed on the training set developed by k-means cluster analysis. Sterimol parameters, electronic interaction at atom number 9, 2D autocorrelation descriptors, information content descriptor, average connectivity index chi-3, radial distribution function, Balaban 3D index and 3D-MoRSE descriptors were found to play crucial roles to modulate IL-1 inhibitory activity. 2D autocorrelation descriptors like Broto-Moreau autocorrelation of topological structure-lag 3 weighted by atomic van der Waals volumes, Geary autocorrelation-lag 7 associated with weighted atomic Sanderson electronegativities and 3D-MoRSE descriptors like 3D-MoRSE-signal 22 related to atomic van der Waals volumes, 3D-MoRSE-signal 28 related to atomic van der Waals volumes and 3D-MoRSE-signal 9 which was unweighted, were found to play important roles to model %AIA suppressive activity.
Natural Science Laboratory, Division of Medicinal and Pharmaceutical Chemistry, Department of Pharmaceutical Technology, P.O. Box-17020, Jadavpur University, Kolkata-700032, India.
Nilanjan
N
Adhikari
Dhritiman
D
Jana
Amit K
AK
Halder
Chanchal
C
Mondal
Milan K
MK
Maiti
Tarun
T
Jha
D000818:Animals; D018501:Antirheumatic Agents / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use*; D001168:Arthritis / Q000188:drug therapy* / Q000276:immunology; D002264:Carboxylic Acids / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use*; D007375:Interleukin-1 / Q000037:antagonists & inhibitors* / Q000276:immunology; D016018:Least-Squares Analysis; D016014:Linear Models; D051379:Mice; D008954:Models, Biological; D021281:Quantitative Structure-Activity Relationship; D051381:Rats; D013876:Thiophenes / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use*
D018501:Antirheumatic Agents; D002264:Carboxylic Acids; D007375:Interleukin-1; D013876:Thiophenes