摘要
Further studies on the sea cucumber Bohadschia marmorata Jaeger led to the isolation of a new holostan-type triterpene glycoside,Marmoroside C(1)together with a known triterpene glycoside(2).On the basis of spectroscopic analyses,including two- dimensional NMR techniques,and chemical reactions,the structure of the new triterpene glycoside was elucidated as 3-O-[3-O- methyl-β-D-glucopyranosyl-(1→3)-β-D-glucopyranosyl-(1→4)-β-D-quinovopyranosyl-(1→2)-4-O-sodium-sulfato-β-D-xylo- pyranosyl]-25-acetoxy-22-oxo-9(11)-holostene-3β,12α,17α-triol.
Further studies on the sea cucumber Bohadschia marmorata Jaeger led to the isolation of a new holostan-type triterpene glycoside,Marmoroside C(1)together with a known triterpene glycoside(2).On the basis of spectroscopic analyses,including two- dimensional NMR techniques,and chemical reactions,the structure of the new triterpene glycoside was elucidated as 3-O-[3-O- methyl-β-D-glucopyranosyl-(1→3)-β-D-glucopyranosyl-(1→4)-β-D-quinovopyranosyl-(1→2)-4-O-sodium-sulfato-β-D-xylo- pyranosyl]-25-acetoxy-22-oxo-9(11)-holostene-3β,12α,17α-triol.