Abstract: | Four new triterpene glycosides of the holostane series have been isolated from an alcoholic extract of the economically important Pacific Ocean holothurianCucumaria japonica: cucumariosides A1-2 (I), A2-3 (II), A2-4 (III), and A4-2 (IV). The structures of these substances have been established by the methods of carbohydrate chemistry and13C NMR spectroscopy.Pacific Ocean Institute of Bioorganic Chemistry, Far Eastern Branch, Academy of Sciences of the USSR, Vladivostok. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 787–793, November–December, 1990. |