Glycosides of marine invertebrates. VIII. Steroid glycosides of the holothurianIsostichopus badionotus

The steroid glycoside fraction ofIsostichopus badionotus, consisting of a mixture of D-xylosides of steroid alcohols, has been isolated by column chromatography on silica gel. The mixture of aglycones obtained after acid hydrolysis was separated with the aid of argentation chromatography into several fractions. GLC-MS analysis, and also the use of IR and¹³C NMR spectroscopy has shown that the steroid glycosides ofI. badionotus are xylosides of ⁰-, ⁷-, ²²-, and ^7.22-, C₂₇-, C₂₈-, and C₂₉-steroids of the cholestane series.Pacific Ocean Institute of Bioorganic Chemistry of the Far Eastern Scientific Center, Academy of Sciences of the USSR, Vladivostok. National Institute of Oncology and Radiobiology of the Ministry of Public Health of the Republic of Cuba, Havana. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 799–802, November–December, 1979.