Structure Identification: |
Phytochemistry, 1998 , 49 (7) :2185-2189. | Structures of sesquiterpene polyol alkaloids from Tripterygium hypoglaucum[Reference: WebLink] | Esters of four new (Hypoglaunine A, B, C and D) and five known sesquiterpene polyalcohol esters have been isolated from the root barks of Tripterygium hypoglaucum.
METHODS AND RESULTS:
The structures of the new compounds were elucidated at 1,2,5,7,8-pentaacetoxy-11-furanoyl-4-hydroxy-3,15[2′-hydroxy-2′,3′-dimethyl-3′(3″-carboxy-4″-pyridyl)-propanoic acid]dicarbolactone-dihydroagarofuran, 1,5,7,8,11-pentaacetoxy-2-furanoyl-4-hydroxy-3,15[2′-hydroxy-2′,3′-dimethyl-3′(3″-carboxy-4″-pyridyl)-propanoic acid]dicarbolactone-dihydroagarofuran, 1,5,7,8,11-pentaacetoxy-2-benzoyl-4-hydroxy-3,15[2′-hydroxy-2′,3′-dimethyl-3′(3″-carboxy-4″-pyridyl)-propanoic acid]dicarbolactone-dihydroagarofuran and 1,2,5,7,8-pentaacetoxy-11-furanoyl-4-hydroxy-3,15[2′,3′-dimethyl-3′(3″-carboxy-4″-pyridyl)-propanoic acid]dicarbolactone-dihydroagarofuran by spectroscopic means. |
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