Triterpene glycosides from Antarctic sea cucumbers III. Structures of liouvillosides A4 and A5, two minor disulphated tetraosides containing 3-O-methylquinovose as terminal monosaccharide units from the sea cucumber Staurocucumis liouvillei (Vaney)

1. Antonov, A.S.
2. Avilov, S.A.
3. Kalinovsky, A.I.
4. Dmitrenok, P.S.
5. Kalinin, V.I.
6. Taboada, S.
7. Ballesteros, M.
8. Avila, C.