Antitumor Triterpenoid Saponin from the Fruits of Avicennia marina

The fruits of Avicennia marina are widely used for both medicine and food in Guangxi of China. As a part of our continuous effort to search for bioactive molecules from the plant, the fruits of A. marina were investigated, which has led to one new triterpenoid saponin (1) and 29 known compounds been isolated and their structures were established by using spectroscopic methods and comparing with literature data. The new triterpenoid saponin showed cytotoxicity against GSC-3# and GSC-18# with the IC(50) values were 12.21 and 5.53 μg/mL respectively, and most of the known compounds had significant antioxidant capacity with the IC(50) values ranging from 0.36 to 13.07 μg/mL. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s13659-018-0167-9) contains supplementary material, which is available to authorized users.