title: Synthesis and screening for acetylcholinesterase inhibitor activity of some novel 2-butyl-1,3-diaza-spiro[4,4]non-1-en-4-ones: derivatives of irbesartan key intermediate.
abstract: The association of bioactive nucleus with other pharmacological agents is hoped to improve the efficacy of the treatment by combining the effects of different pharmacological mechanisms of action. Keeping this in view, a series of 2-butyl-1,3-diaza-spiro[4,4]non-1-en-4-one derivatives have been synthesized by interaction of 2-butyl-1,3-diaza-spiro[4,4]non-1-en-4-one with different bioactive aralkyl halides in presence of powdered potassium carbonate by two different methods viz., conventional and microwave irradiation. The yields under conventional and microwave irradiation methods were in the range of 60-65% and 80-90%, respectively. The structure elucidation of the new compounds has been carried out with the help of elemental analysis and spectral data. All the synthesized compounds have been screened for their efficacy as acetylcholinesterase (AChE) inhibitor. AChE inhibitory activity study was carried out by using Ellman colorimetric assay with neostigmine as a reference standard against targets from different species, such as pure electric eel AChE, human serum AChE, and rat brain AChE. Among the compounds synthesized, compounds 5a, 5b, 5j showed good inhibition against AChE.
authors: Department of Studies in Chemistry, University of Mysore, Manasagangothri, Mysore 570006, India.
authors: C V
authors: CV
authors: Kavitha
authors: S L
authors: SL
authors: Gaonkar
authors: J N
authors: JN
authors: Narendra Sharath Chandra
authors: C T
authors: CT
authors: Sadashiva
authors: K S
authors: KS
authors: Rangappa
mesh_terms: D000110:Acetylcholinesterase / Q000097:blood / Q000187:drug effects*; D000818:Animals; D001713:Biphenyl Compounds / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D001921:Brain / Q000201:enzymology; D002800:Cholinesterase Inhibitors / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D004353:Drug Evaluation, Preclinical; D004524:Eels; D004789:Enzyme Activation / Q000187:drug effects; D006801:Humans; D020128:Inhibitory Concentration 50; D000077405:Irbesartan; D015394:Molecular Structure; D051381:Rats; D013141:Spiro Compounds / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D013237:Stereoisomerism; D013329:Structure-Activity Relationship; D013777:Tetrazoles / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D001713:Biphenyl Compounds; D002800:Cholinesterase Inhibitors; D013141:Spiro Compounds; D013777:Tetrazoles; D000110:Acetylcholinesterase; D000077405:Irbesartan