title: Cytotoxic triterpene glycosides from the sea cucumber Pseudocolochirus violaceus.
abstract: A new triterpene glycoside (1) along with the known intercedenside B (2) was isolated from the sea cucumber Pseudocolochirus violaceus. Glycoside 1 was elucidated as 3-O-{6-O-sodiumsulfate-3-O-methyl-beta-D-glucopyranosyl-(1-->3)-beta-D-xylopyranosyl-(1-->4)-[beta-D-xylopyranosyl(1-->2)]-beta-D-quinovopyranosyl-(1-->2)-4-O-sodiumsulfate-beta-D-xylopyranosyl}-16beta-acetoxy-holosta-7, 24-diene-3beta-ol on the basis of extensive spectral studies and chemical evidence. Both the glycosides exhibited significant cytotoxicity against cancer cell lines MKN-45 and HCT-116.
authors.affiliation: Research Center for Marine Drugs, College of Pharmacy, 2nd Military Medical University, Shanghai 200433, PR China. zhangshuyu77@163.com
authors.forename: Shu-Yu
authors.initials: SY
authors.lastname: Zhang
authors.forename: Hai-Feng
authors.initials: HF
authors.lastname: Tang
authors.forename: Yang-Hua
authors.initials: YH
authors.lastname: Yi
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D045744:Cell Line, Tumor / Q000187:drug effects; D006027:Glycosides / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use; D009682:Magnetic Resonance Spectroscopy; D008517:Phytotherapy; D012616:Sea Cucumbers; D013329:Structure-Activity Relationship; D014315:Triterpenes / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use
chemical_list: D000970:Antineoplastic Agents; D006027:Glycosides; D014315:Triterpenes