New Triterpene Glycosides from an Ulosa sp. Sponge |
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| Authors: | Antonov A S Kalinovskii A I Dmitrenok P S Stonik V A |
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| Institution: | (1) Far East Division, Russian Academy of Sciences, Pacific Institute of Bioorganic Chemistry, pr. Stoletiya Vladivostoka 159, Vladivostok, 660022, Russia |
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| Abstract: | New triterpene glycosides, ulososides C, (20S,22S,23R,24S)-3 ,22,23-trihydroxy-3-O-(-D-glucopyranosyl)-32-nor-24-methyllanost-8(9)-ene-30-oic acid, D, (20S,22S,23R,24S)-3,22,23-trihydroxy-3-O-(-D-N-acetylglucosaminopyranosyl)-32-nor-24-methyllanost-8(9)-ene-30-oic acid, and E, (20S,22S,23R,24S)-3,22,23-trihydroxy-3-O-(-D-glucuronopyranosyl-(1  2)- -D-arabinopyranosyl-32-nor-24-methyllanost-8(9)-ene-30-oic acid, were isolated from an Ulosa sp. sponge. Their structures were determined by spectral methods and chemical transformations. Specific features of their structures are discussed. |
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| Keywords: | sponge Ulosa sp triterpene glycosides isolation spectral characteristics structure |
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