title: Synthesis, biological evaluation and molecular docking studies of stellatin derivatives as cyclooxygenase (COX-1, COX-2) inhibitors and anti-inflammatory agents.
abstract: Stellatin (4), isolated from Dysophylla stellata is a cyclooxygenase (COX) inhibitor. The present study reports the synthesis and biological evaluation of new stellatin derivatives for COX-1, COX-2 inhibitory and anti-inflammatory activities. Eight derivatives showed more pronounced COX-2 inhibition than stellatin and, 17 and 21 exhibited the highest COX-2 inhibition. They also exhibited the significant anti-inflammatory activity in TPA-induced mouse ear edema assay and their anti-inflammatory effects were more than that of stellatin and indomethacin at 0.5mg/ear. The derivatives were further evaluated for antioxidant activity wherein 16 and 17 showed potent free radical scavenging activity against DPPH and ABTS radicals. Molecular docking study revealed the binding orientations of stellatin and its derivatives into the active sites of COX-1 and COX-2 and thereby helps to design the potent inhibitors.
authors.affiliation: Department of Natural Products, National Institute of Pharmaceutical Education and Research (NIPER), SAS Nagar, Mohali, Punjab, India.
authors.forename: Raju
authors.initials: R
authors.lastname: Gautam
authors.forename: Sanjay M
authors.initials: SM
authors.lastname: Jachak
authors.forename: Vivek
authors.initials: V
authors.lastname: Kumar
authors.forename: C Gopi
authors.initials: CG
authors.lastname: Mohan
mesh_terms: D000818:Animals; D000893:Anti-Inflammatory Agents / Q000737:chemistry / Q000494:pharmacology*; D020134:Catalytic Domain; D003374:Coumarins / Q000737:chemistry / Q000494:pharmacology*; D016861:Cyclooxygenase Inhibitors / Q000737:chemistry / Q000494:pharmacology*; D049934:Isocoumarins; D051379:Mice; D008958:Models, Molecular
chemical_list: D000893:Anti-Inflammatory Agents; D003374:Coumarins; D016861:Cyclooxygenase Inhibitors; D049934:Isocoumarins; C556133:stellatin