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Structure determination of a new lupane-type triterpene, tiarellic acid, isolated from Tiarella polyphylla
Si-Hyung Park1, Sei-Ryang Oh, Kyung-Seop Ahn
1Department of Medicinal Plant Resources, Mokpo National University, Jeonnam, Korea.
Archives of Pharmacal Research
|March 12, 2002
Abstract:
A new 27-carboxylic lupane-type triterpene, tiarellic acid (1), was isolated from Tiarella polyphylla together with corosolic acid (2) and tormentic acid (3). Tiarellic acid was characterized as 3,23-dihydroxy-20(29)-lupen-27-oic acid and its NMR data were unambiguously assigned using 2-D NMR techniques.