Khotimchenko Y .

	Figure 1. The basic backbone structure of 1-3-linked fucose residues in many sulfated fucans from marine organisms. R may be hydrogen, sulfate, or a galactose or fucose side chain.
	Figure 2. Preponderant structure of the fucosylated chondroitin sulfate. The backbone is made up by repeating disaccharide units of alternating β-d-glucuronic acid (A) and N-acetyl-β-d-glucosamine (B). The β-d-glucuronic acid residues bear 2,4-disulfated fucose branches (C) at the 3-O-position. R may be hydrogen or sulfate.
	Figure 3. Neutral glucan from sea cucumber Holothuria edulis. The major component of polysaccharide is an α-(1→4)-d-glucan branched with a single α-d-glucose at C-6 every five residues on average.
	Figure 4. Structures of lanostane, holostane and holostanol. A, B, C, D, E: rings of the pentacyclic triterpene.
	Figure 5. Common sugar units present in sea cucumber triterpene glycosides [59].
	Figure 6. Some common carbohydrate architectures in the sea cucumber triterpene glycosides. The sugar moieties are 3-O-methyl-d-glucose (MeGlc), d-glucose (Glc), d-xylose (Xyl), d-quinovose (Qui), 3-O-methyl-d-xylose (MeXyl) [59].
	Figure 7. Representative structure of glucosylceramide (d-glucosyl-β-1,1′-N-palmitoylsphingosine).
	Figure 8. Structures of naturally occurring sphingoid bases.

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