1. INTRODUCTION Bicyclic oxygen heterocycles resulting from fusion of benzene ring with
5, 6-positions of either 2H-or 4H-pyran ring system are designated as 2H-chromene (2H-1 …

Schiff bases are condensation products of primary amines with carbonyl compounds gaining
importance day by day in present scenario. Schiff bases are the compounds carrying imine …

Metal complexes of Schiff bases synthesized from condensation of an amine with carbonyl
compounds are widely used for industrial purposes such as catalysts, pigments and dyes …

Schiff bases being active biological moieties, possess diverse pharmacological activities.
Metal ions play a vital role in various functions of the human body. The importance of metal …

Coumarin compounds represent an important type of naturally occurring and synthetic
oxygen-containing heterocycles with typical benzopyrone framework. This type of special …

Coumarins, a well-known class of naturally occurring compounds, display a remarkable
array of biochemical and pharmacological actions, some of which suggest that certain …

Ionic liquids (ILs) are getting prominence as eco-sustainable solvents, especially as
alternatives to existing mediums in chemical reactions because of the advantage of …

Schiff bases or azomethines are among the most important groups of biomolecules. These
compounds have been found to reveal both remarkable biological activities and a variety of …

Coumarins are oxygen-containing molecules with specific benzopyrone nucleus. Different
coumarins are identified as antineurodegeneratives, anticoagulants, antioxidants …

A series of 3-phenylcoumarins were synthesized and screened for potential antidepressant
activity by tail suspension test (TST) in mice. Three compounds (6, 7 and 13) exhibited …