Four New Triterpenes from Fungus of Fomes officinalis
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In the previous work we reported five lanostane-type triterpenes from the CHCl<sub>3</sub> soluble fraction of <i>Fomes officinalis</i>. In further study on the isolation of constituents from the CHCl<sub>3</sub> soluble fraction, four new triterpenes, fomefficinic acids F (1), G (2) and fomefficinols A (3), B (4), together with seven known compounds officinalic acid (5), fomlactone A (6), fomlactone B (7), fomlactone C (8), laricinolic acid (9), ergosterol (10), ergota-7,22,dien-3β-ol (11) were isolated. The structures of new compounds were determined by spectroscopic analyses and chemical methods including NMR spectroscopic techniques (<sup>13</sup>C, <sup>1</sup>H, heteronuclear multiple quantum coherence (HMQC), heteronuclear multiple bonding correlation (HMBC), correlation spectroscopy (COSY) and nuclear Overhauser effect spectroscopy (NOESY)).
- Chemical and Pharmaceutical Bulletin
Chemical and Pharmaceutical Bulletin 57(2), 195-197, 2009-02-01
The Pharmaceutical Society of Japan