Abstract
Two novel glycosides, apostichoposide A1 (1) and B1 (2), were isolated from the viscera of Chinese sea cucumbers (Apostichopus japonicus, Selenka) collected in the Bohai sea. Both the isolated glycosides were characterized by non-holostane type aglycones having 18(16)-lactone and 7(8)-double bond. Cytotoxic activities of the two compounds were evaluated against three human cancer cell lines. Compound 1 had adequate cytotoxic activity against MGC-803 and PC-3M cell lines. Our results indicated that glycosides present in A. japonicus viscera are an important high value resource for biotechnological applications.
Disclosure statement
No potential conflict of interest was reported by the authors.
Funding
This study was financially supported by the Public Science and Technology Research Funds Projects of Ocean (grant number 201505030), the National Natural Science Foundation of China (grant number 81602982), and the Shandong Natural Science Foundation of China (grant number ZR2016YL009).