A series of 3-benzylidene-7-alkoxychroman-4-one derivatives were synthesized and evaluated for their antioxidant activities. The antioxidant activity was assessed using three methods, namely, 1, 1 -diphenyl-2-picrylhydrazy] (DPPH) radical scavenging, ferric reducing antioxidant power (FRAP), and thiobarbituric acid reactive substances (TBARS) assays. 3-Benzylidene-7-alkoxychroman-4-one derivatives bearing catecholic group on benzylidene moiety exhibited excellent antioxidant activity. Compounds having catechol moiety exhibited potent antioxidant activities in all tested methods and they were more active than the reference drug, Trolox. (c) 2007 Elsevier Ltd. All rights reserved.
Design, synthesis and anticholinesterase activity of novel benzylidenechroman-4-ones bearing cyclic amine side chain
A series of 3-(4-(aminoalkoxy)benzylidene)-chroman-4-ones 7a-r were designed and synthesized as analogs of homoisoflavonoids which are well known natural products with diverse pharmacological properties related to Alzheimer's disease. The in vitro anti-cholinesterase activity of designed compounds 7a-r against AChE and BuChE, revealed that compounds bearing piperidinylethoxy residue showed potent activity against AChE at sub-micromolar level (IC50 values = 0.122-0.207 mu M), more potent than reference drug tacrine. The structure-activity relationships study of piperidinylethoxy series demonstrated that the selectivity and physicochemical properties of compounds could be optimized by selection of a proper substituent on the C-7 position of chroman ring, while the high potency of the molecule against AChE was reserved. (C) 2015 Elsevier Masson SAS. All rights reserved.
The present invention is related to novel compounds of formula (I) having equilibrative nucleoside transporter ENT1 inhibiting properties, pharmaceutical compositions comprising these compounds, chemical processes for preparing these compounds and their use in the treatment of diseases linked to the inhibition of ENT1 receptors in animals, in particular humans.