A new neolignan, (7R,8R)-5-O-demethylbilagrewin (1), together with four known lignans (2-5), were isolated from the heartwood of Santalum album (Santalaceae). The structure of 1 was determined by analysis of extensive spectroscopic data. The isolated compounds and derivatives were evaluated for
A bioassay-guided fractionation of the heartwood of Santalum album led to the isolation of seven α-santalol derivatives including (9S,10E)-9-hydroxy-α-santalal, (10R,11S)-10,11-dihydroxy-α-santalol, (9E)-11,13-dihydroxy-α-santalol, and (10E)-12-hydroxy-α-santalic acid. Their structures were
A rare type of sesquiterpene with a spiro bicyclic system (1) and seven new (2-8) and four known (9-12) β-santalol derivatives were isolated from the heartwood of Santalum album (Santalaceae). The structures of these new compounds were determined by analysis of extensive spectroscopic data. The
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