Bohadschia bivittata

Bivittoside C, Fig. (2), a hexaglycoside isolated from the sea cucumber Bohadschia bivittata [18] is the simplest triterpene glycoside with a A9,11 double bond ... 

Most of sea cucumber triterpene glycosides are tetra- or pentaglycosides. The majority of tetrasaccharides show a linear chain with the most common 3-0-Me-Glc-(l—>3)-Glc-(1 4)-Qui-(l—>2)-Xyl structure. The few disaccharides that have been isolated show a Qui-(1 2)-4-0S03Na-Xyl chain attached to C-3 of the triterpenoid aglycone. Some hexasaccharides have been isolated from sea cucumbers of the order Aspidochirota Stichopus japonica, Stichopus chloronotus, Parastichopus californius and Bohadschia bivittata [55]. They are non-sulfated glycosides with a linear 3-0-Me-Glc-(1 3)-Glc-(l- 4)-Xyl chain and a branching of a linear trisaccharide at C-2 of the xylose unit. 

New Triterpenoidal Oligoglycosides, Bivittoside A, B, C, and D, from the Sea Cucumber Bohadschia bivittata Mitsukuri. Chem. Pharm. Bull. (Japan) 29, 282 (1981). 

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