Two new 30-noroleanane triterpenes, 2
α,3
β,20
α-trihydroxy-30-norolean-12-en-28-oic acid (
1), 2
α,3
β-dihydroxy-23-oxo-30-norolean-12,20(29)-dien-28-oic acid (
2), were isolated from the pericarps of
Akebia trifoliata, together with four known ones, 3
β-akebonoic acid (
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Two new 30-noroleanane triterpenes, 2
α,3
β,20
α-trihydroxy-30-norolean-12-en-28-oic acid (
1), 2
α,3
β-dihydroxy-23-oxo-30-norolean-12,20(29)-dien-28-oic acid (
2), were isolated from the pericarps of
Akebia trifoliata, together with four known ones, 3
β-akebonoic acid (
3), 2
α,3
β-dihydroxy-30-noroleana-12,20(29)-dien-28-oic acid (
4), 3
α-akebonoic acid (
5) and quinatic acid (
6). Their structures were established on the basis of detailed spectroscopic analysis, and they were all isolated from the pericarps of
A. trifoliata for the first time. Compounds
3−
6 showed
in vitro bacteriostatic activity against four assayed Gram-positive bacterial strains. In particular
3 showed antibacterial activity toward
MRSA with a MIC value 25 μg/mL, which was more potent than kanamycin (MIC 125 μg/mL). No compounds showed antibacterial activity toward the three Gram-negative bacteria tested. Compounds
4 and
5 showed interesting
in vitro growth inhibitory activity against human tumor A549 and HeLa cell lines, with IC
50 values ranging from 8.8 and 5.6 μM, respectively. Compounds
1,
2,
5 and
6 were further revealed to show significant
in vitro α-glucosidase inhibitory activity with IC
50 values from 0.035 to 0.367 mM, which were more potent than the reference compound acarbose (IC
50 0.409 mM).
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