Triterpenoids from the stems of Schisandra grandiflora and their biological activity

Abstract

One new ursane-type triterpenoid (1), named granditriol, along with 14 known compounds (2–15), was isolated from the organic extracts of Schisandra grandiflora stems. The structure of the new compound was elucidated by extensive spectroscopic methods as 28-norursa-12,17,19,21-tetraen-2α,3α,23-triol. These isolates were evaluated for anti-phytopathogenic fungi activity and cytotoxicity against human cancer cell line (HepG2). Asiatic acid (8) and 2α,3α,19α-trihydroxyurs-12-en-28-oic acid (9) inhibited the growth of two plant pathogens, Alternaria alternata and Alternaria solani. In addition, compounds 12, 15, and 11 displayed notable anti-proliferative activity against HepG2 cells. Compound 1 is the first report of 28-nortriterpenoid from the Schisandraceae family. All these were obtained from this plant for the first time.

Keywords:

• Shisandraceae
• Schisandra grandiflora
• 28-nortriterpenoid
• triterpenoids
• antifungal activity
• cytotoxicity