Retinoic acid and evernyl-based menadione-triazole hybrid cooperate to induce differentiation of neuroblastoma cells.

Neuroblastoma arises when immature neural precursor cells do not mature into specialized cells. Although retinoic acid (RA), a pro-differentiation agent, improves the survival of low-grade neuroblastoma, resistance to retinoic acid is found in high-grade neuroblastoma patients. Histone deacetylases (HDAC) inhibitors induce differentiation and arrest the growth of cancer cells; however, HDAC inhibitors are FDA-approved mostly for liquid tumors.

Synthesis of some novel methyl β-orsellinate based 3, 5-disubstituted isoxazoles and their anti-proliferative activity: Identification of potent leads active against MCF-7 breast cancer cell.

A series of sixteen novel methyl β-orsellinate based 3, 5-disubstituted isoxazole hybrids (3-18) were synthesized in excellent yields by employing 1,3-dipolar cycloaddition reaction of terminal alkyne and corresponding nitriloxides as the key step. The structures of all the synthesized compounds were elucidated by spectroscopic data such as H &C NMR and HRMS. The anti-proliferative activity of newly synthesized compounds were assessed in vitro against a panel of four human cancer cell lines, namely IMR-32 (neuroblastoma), DU-145 (prostate), MIAPACA (pancreatic), MCF-7 (breast) along with a normal cell line HEK-293T (embryonic kidney) by employing Sulforhodamine B (SRB) assay.