New sesquiterpenoids from Lycianthes marlipoensis

Two new sesquiterpenoids and one derivative, lycifuranone A (= (4R)-4,5-dihydro-4-(3-hydroxy-2,6dimethylbenzyl)-5,5-dimethylfuran-2(3H)-one; 1), lycifuranone B (=4,5-dihydroxy-3-methyl-2-{[(3R)-tetrahydro-2,2-dimethyl-5-oxofuran-3-yl]methyl} benzaldehyde; 2), and lycifuranone C (= (4R)-4-(3,4-dihydroxy6-1(2S,4R,6S)-4-[2-(4-hydroxy-3-methoxyphenyl)ethyl]-6-pentyl[1,3]dioxan-2-yll-2-methylbenzyl)-4,5-dihydro- 5,5-dimethylfuran-2(3H)-one; 3), respectively, have been isolated from the roots of Lycianthes marlipoensis, and their structures were established by spectroscopic methods.