Synthesis, characterization and biological evaluation of some novel 9-benzooxazol-4-yl-3,4-diphenyl-1-oxa-6-thia-2,4,9-triaza-spiro[4.4] non-2-en-8-ones. International Journal of Biomedical Research, [S. l.], v. 5, n. 1, p. 05–12, 2013. DOI: 10.7439/ijbr.v5i1.395. Disponível em: https://ssjournals.co.in/index.php/ijbr/article/view/919. Acesso em: 11 mar. 2026.