Semi synthesis of gypsogenin-chalcone hybrid compounds and investigation of their biological activity

Gypsophila arrostii which is colloquially referred to as "çöven", is a member of Caryophyllaceae family and its roots contain mainly saponin, sugar and resin. Gypsogenin is a triterpenic natural compound in the pentacyclic structure and isolated from Gypsophila arrostii roots. Biological activities of natural compounds containing gypsogenin structure are known such as antiviral, antitumor, anticarkinogenic, and antioxidant and anticancer. In this thesis, acetylated derivative of gypsogenin was synthesized by the reaction of acetic anhydride and tetrahydrofuran with hydroxyl group on the C-3 position of gypsogenin. Besides, nine isomeric chalcone derivatives (C1-9) were synthesized and esterification reaction took place between chalcone derivatives and hydroxyl group on the C-28 position of Acetyl-Gypso in order to obtained nine new gypsogenin-COO-chalcone hybride compounds (1-9). All synthesized compounds (1-9) were in pure form and identified by various spectroscopic methods (FT-IR, UV, NMR, LC-MS) and their antimicrobial activity were studied.