Abstract:
Twelve compounds were isolated and purified from 95% ethanol extract of the whole plant of
C.
lucidissima by silica gel column chromatography, MCI column chromatography and ODS column chromatography, polyamide column chromatography, Sephadex LH-20 column chromatography, combined with semi-preparative HPLC methods. Based on the physicochemical properties and spectral data (UV, IR, MS, NMR), the structures of the isolates were identified as canlucdiphenyl ether A (
1), canlucdiphenyl ether B (
2), canlucbenzophenone A (
3), (-)-pinoresinol (
4), 3-hydroxybenzoic acid (
5), 1, 3, 8-trihydroxy-6-hydroxymethylanthraquinone (
6), dihydrokaempferol (
7), 6, 7-dihydroxycoumarin (
8), 4-hydroxy-3, 5-dimethoxybenzoic acid (
9), 4-hydroxy-3, 5-dimethoxycinnamic acid (
10), 2-hydroxy-3-methoxybenzoic acid (
11), (-)-syringaresinol (
12). Among them, compounds
1 and
2 are two new diphenyl ether and
3 is a new natural product. Compound
8 exhibited some anti-inflammatory activity by inhibiting the lipopolysaccharide-induced NO production in RAW264.7 cells.