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Ursane-type triterpenoids from the roots of Rosa multiflora with their anti-inflammatory activity
Hai Jiang1, Hua Han1, Wen-Jing Man1
1Key Laboratory of Chinese Materia Medica (Ministry of Education), Heilongjiang University of Chinese Medicine, Ministry of Education, Harbin 150040, China.
Abstract:
Nine ursane-type triterpenoids including three new ones 2α, 19α-dihydroxyurs-3-O-acetyltormentic acid (1), 1α, 2α, 3α, 20β-tetrahydroxyurs -13(18)-en-28-oic acid (2), and 2α, 3α, 20β, 24-tetrahydroxyurs-13(18)-en-28-oic acid (3) were isolated from the roots of Rosa multiflora. Their structures were elucidated by extensive spectroscopic methods, including NMR, MS, and IR spectroscopic analyses data. All the isolates were evaluated for their anti-inflammatory activity in vitro and the results showed that compounds 1-9 displayed moderate inhibitory activity with IC50 values ranging from 24.7 to 86.2 μM compared with the postitive control Amino guanidine (IC50 4.3 μM).[Formula: see text].
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