Ariel - Volume 10 Number 3

Executive Editors Madalyn Schaefgen David Reich Business Manager David Reich News Editors Medical College Edward Zurad CAHS John Guardiani World Mark Zwanger Features Editors Meg Trexler Jim O\u27Brien Editorials Editor Jeffrey Banyas Photography and Sports Editor Stuart Singer Commons Editor Brenda Peterso

A facile synthesis and evaluation of new biomolecule-based coumarin-thiazoline hybrids as potent anti-tubercular agents with cytotoxicity, DNA cleavage and X-ray studies

An efficient and rapid synthesis of coumarin-thiazoline hybrids (1a-1j) under microwave irradiation is described with high yields. The synthesized compounds were characterized using elemental and spectroscopic analysis; in addition, the structures of compounds 1a, 1b, 1e and 1h have been elucidated using single crystal X-ray diffraction techniques. All the newly synthesized compounds were screened for their in vitro anti-tubercular activity and in a DNA cleavage study, while the most active compounds were subjected to a cytotoxicity assay on Vero cell lines. Among those tested, compound 1b exhibited excellent anti-tubercular activity (MIC 0.09 mg ml(-1)) with a low level of cytotoxicity, suggesting that compound 1b is a promising lead for subsequent investigations in search of new anti-tubercular agents. Furthermore, a DNA cleavage study using an agarose gel electrophoresis method revealed that compounds 1b, 1d, 1f and 1i cleaved DNA more efficiently and thereby exhibit nuclease activity