A facile synthesis of new 3,3-disubstituted phthalides of pharmacological interest
摘要:
A series of new phthalides of pharmacological interest were synthesized by a protocol involving condensation of two gamma-keto acids, 2-(4-isopropylbenzoyl)benzoic acid (1a) and 2-(4-isopropyl-3-nitrobenzoyl)benzoic acid (1b) with phenolic compounds in the presence of catalytic quantity of concentrated sulphuric acid. The method is simple, efficient, economical and environmentally benign as the reaction is carried out under solvent free condition attempting a green approach. Structural characterization of these newly synthesized compounds was accomplished by IR, UV, H-1 NMR, C-13 NMR, Mass spectral data, elemental analysis and chemical reactions. Some of the synthesized phthalides were found to exhibit antifungal and antibacterial activity against various human pathogenic bacterial and fungal strains.
A facile synthesis of new 3,3-disubstituted phthalides of pharmacological interest
作者:Tanu Chamoli、M. S. M. Rawat
DOI:10.1007/s00044-012-0049-3
日期:2013.1
A series of new phthalides of pharmacological interest were synthesized by a protocol involving condensation of two gamma-keto acids, 2-(4-isopropylbenzoyl)benzoic acid (1a) and 2-(4-isopropyl-3-nitrobenzoyl)benzoic acid (1b) with phenolic compounds in the presence of catalytic quantity of concentrated sulphuric acid. The method is simple, efficient, economical and environmentally benign as the reaction is carried out under solvent free condition attempting a green approach. Structural characterization of these newly synthesized compounds was accomplished by IR, UV, H-1 NMR, C-13 NMR, Mass spectral data, elemental analysis and chemical reactions. Some of the synthesized phthalides were found to exhibit antifungal and antibacterial activity against various human pathogenic bacterial and fungal strains.