Two new lignans from the fruits of Schisandra sphenanthera.
Two new lignans, (8R,8'R)-8- hydroxy-3,4-dimethoxy-3',4'-methylenedioxy-7-oxolignan (1) and (7'R,8'S)-3,4-methylenedioxy-3',4'-dimethoxy -7,8-seco-7,7'-epoxylignan-7,8-dione (2), were isolated from the EtOAc extract of the fruits of Schisandra sphenanthera, along with ten known compounds. The structures of these compounds were elucidated on the basis of NMR and MS analysis. This is the first report of the occurrence of secolignans in Schisandra.
Wang
Chun Ren
CR
Provincial Key Lab of Rural Energy Engineering, Yunnan Normal University, Kunming 650092, People's Republic of China.
Sun
Rong
R
Yanga
Chen Ren Ou
CR
Chen
Ye Gao
YG
Song
Hong Chuang
HC
D002236:Carbohydrate Conformation; D002855:Chromatography, Thin Layer; D005638:Fruit / Q000737:chemistry*; D017705:Lignans / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D010936:Plant Extracts / Q000737:chemistry; D032141:Schisandra / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
C546655:(7'R,8'S)-3,4-methylenedioxy-3',4'-dimethoxy -7,8-seco-7,7'-epoxylignan-7,8-dione; C546654:(8R,8'R)-8- hydroxy-3,4-dimethoxy-3',4'-methylenedioxy-7-oxolignan; D017705:Lignans; D010936:Plant Extracts