| In vitro: |
| J Nat Prod . 2003 Dec;66(12):1582-1585. | | Lucidenic acids P and Q, methyl lucidenate P, and other triterpenoids from the fungus Ganoderma lucidum and their inhibitory effects on Epstein-Barr virus activation[Pubmed: 14695801] | | A new triterpene acid, lucidenic acid P (1a), and two new triterpene acid methyl esters, methyl lucidenates P (1b) and Q (2b), were isolated and characterized from the fruiting body of the fungus Ganoderma lucidum. Their structures were elucidated on the basis of spectroscopic methods. In addition, eight known triterpene acids, lucidenic acids A (3a), C (4a), D(2) (5a), E(2) (6a), and F (7a) and ganoderic acids E (9a), F (10a), and T-Q (11a), and six known triterpene acid methyl esters, methyl lucidenates A (3b), D(2) (5b), E(2) (6b), F (7b), and L (8b) and methyl ganoderate F (10b), were isolated and identified from the fungus. All of the triterpenoids, with the exception of 7a, were evaluated with respect to their inhibitory effects on the induction of Epstein-Barr virus early antigen (EBV-EA) by 12-O-tetradecanoylphorbol-13-acetate (TPA) in Raji cells, which is known to be a primary screening test for antitumor promoters. All of the compounds tested showed potent inhibitory effects on EBV-EA induction (96-100% inhibition at 1 x 10(3) mol ratio/TPA). | | Nat Prod Res . 2013;27(1):17-22. | | Triterpenoids from Ganoderma lucidum and their cytotoxic activities[Pubmed: 22263904] | | From the ethyl acetate fraction of the fruiting body of Ganoderma lucidum, a new triterpenoid, ethyl 7β-hydroxy-4,4,14α-trimethyl-3,11,15-trioxo-5α-chol-8-en-24-oate (4), named ethyl lucidenates A, along with three known compounds, ganodermanondiol (1), lucidumol B (2) and methyl lucidenates A (3) were isolated by silica gel column, ODS column chromatography and PHPLC. Their structures were established on the basis of spectroscopic analysis and chemical evidence. The isolated compounds were tested using in vitro MTT assay for their cytotoxic activities against the K562, HL-60, CA46, HepG2, SW480 and SMMC-7221 cancer cell lines. Among them, compound 4 showed cytotoxicity against HL-60 and CA46 cancer cell lines with IC(50) values of 25.98 and 20.42 μg mL(-1), respectively. |
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