title: A new ganoderic acid from Ganoderma lucidum mycelia.
abstract: A new ganoderic acid (GA), 7-O-ethyl ganoderic acid O (GA-O) (1), together with two known compounds, GA-T (2) and GA-Me (3), was isolated and purified from fermented mycelia of Ganoderma lucidum. The structure of the new triterpenoid was elucidated on the basis of the interpretation of extensive spectroscopic data (HR-MS, IR, UV, 1D and 2D NMR) as 3 alpha,15 alpha,22-triacetoxy-7 alpha-ethoxy-5 alpha-lanost-8,24E-dien-26-oic acid. The new compound was found to contain a rare ethoxyl group at C-7. In addition, its cytotoxicity against 95D and HeLa human cancer cell lines was also evaluated.
authors: Key Laboratory of Microbial Metabolism, Ministry of Education, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China.
authors: Jia-Le
authors: JL
authors: Wang
authors: Ying-Bo
authors: YB
authors: Li
authors: Ru-Ming
authors: RM
authors: Liu
authors: Jian-Jiang
authors: JJ
authors: Zhong
mesh_terms: D002681:China; D004354:Drug Screening Assays, Antitumor; D005260:Female; D006367:HeLa Cells; D006801:Humans; D007810:Lanosterol / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D015394:Molecular Structure; D025282:Mycelium / Q000737:chemistry; D019906:Nuclear Magnetic Resonance, Biomolecular; D020940:Reishi / Q000737:chemistry*
chemical_list: C552013:7-O-ethyl ganoderic acid O; D007810:Lanosterol