Structures of sesquiterpene polyol alkaloids from Tripterygium hypoglaucum
1998
Duan, H. | Takaishi, Y.
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. 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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