Abstract:
In the present study, three new triterpenoids, 23-hydroxyurs-12, 18-dien-28-oic acid 3
β-O-α-L-arabinopyranoside (
1 ), 23-hydroxyurs-12, 18-dien-28-oic acid 3
β-O-β-D-glucuronopyranoside-6-
O-methyl ester (
2 ), and urs-12, 18-dien-28-oic acid 3
β-O-β-D-glucuronopyranoside-6-
O-methyl ester (
3 ), and a known triterpenoid, 3
β-hydroxy-urs-2, 18-dien-28-oic acid (
4 , randialic acid B), were isolated from the aerial parts of
Ilex cornuta. Their structures were identified by the spectroscopic analyses (IR, ESI-MS, HR-ESI-MS, and 1D and 2D NMR) and chemical reactions. Compound
4 showed significant cell-protective effects against H
2O
2-induced H9c2 cardiomyocyte injury. Compounds
1-4 did not show any significant DPPH radical scavenging activity.