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Bioorg Med Chem Lett. 2017 Jul 1;27(13):2939-2942. doi: 10.1016/j.bmcl.2017.05.003. Epub 2017 May 6.

Cytotoxic triterpene diglycosides from the sea cucumber Stichopus horrens.

Author information

1
Institute of Marine Biochemistry (IMBC), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam; Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam.
2
Institute of Marine Biochemistry (IMBC), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam.
3
Institute of Biotechnology, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam.
4
Institute of Marine Environment and Resources (IMER), VAST, 246 Da Nang, Haiphong, Viet Nam.
5
Institute of Marine Biochemistry (IMBC), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam. Electronic address: cvminh@vast.vn.

Abstract

Using various chromatographic separation techniques, eight triterpene diglycosides (1-8), including four new compounds namely stichorrenosides A-D (1-4), were isolated from a methanol extract of the Vietnamese sea cucumber S. horrens. Their structures were elucidated based on spectroscopic analyses, including HR ESI MS, 1D and 2D NMR. Their in vitro cytotoxic activity against five human cancer cell lines, Hep-G2 (hepatoma cancer), KB (epidermoid carcinoma), LNCaP (prostate cancer), MCF7 (breast cancer), and SK-Mel2 (melanoma), was evaluated using SRB methods. Stichorrenoside D (4), stichoposide A (5), and 3β-O-[β-d-xylopyranosyl-(1→2)-β-d-xylopyranosyl]-23S-acetoxyholost-7-ene (7) showed strong cytotoxicity on all five tested cancer cell lines, whereas significant effect was observed for stichorrenoside C (3) and stichoposide B (6).

KEYWORDS:

Cytotoxicity; Stichopodidae; Stichopus horrens; Triterpene glycoside

PMID:
28512032
DOI:
10.1016/j.bmcl.2017.05.003
[Indexed for MEDLINE]

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