Chemical Constituents of Lignans from Cephalotaxus oliveri Mast
To study the chemical constituents of Cephalotaxus oliveri Mast.Eight lignans were isolated from its ethanol extract by various chromatographic and spectral methods,and they were identified as sesquipinsapol B(1),8-hydroxypluviatolide(2),isolariciresinol(3),2-[2-hdroxy-5-(3-hydroxypropyl)-3-methoxyphenyl]-3-(4-hydroxy-3-methoxyphenyl)-1-propanol(4),trans-3-methoxy-3′,7-epoxy-8,4′-oxyneoligna-4,9,9′-triol(5),pinoresinol(6),linderinol(7),ligraminol E(8).Among them,compounds 1,2,4,5,7 and 8 were isolated from Cephalotaxus genus for the first time.
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