Glycosides of marine invertebrates. XIII. New holothurinogenins of holothurin B1 fromHolothuria floridana
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We have isolated for the first time the native aglycone of a triterpene glycoside of the holoturin series — holothurin B1 — and have established its structure as holost-9-ene-3β,12α,17α-triol. The structures of two new holostane derivatives have been established — holosta-8,11-diene-3β,17α-diol and 3β,17α-dihydroxyholost-9-en-12-one. A scheme of transformation of the native genin of holothurin B1 under the conditions of the acid splitting of the glycoside has been put forward.
KeywordsGlycoside Triterpene Glycoside Sodium Tetrahydroborate Erythrodiol Uvaol
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