Two New Stereoisomers of Neolignan and Lignan from the Flower Buds of <i>Magnolia fargesii</i>

A new stereoisomer of 8-O-4′ system neolignan, (7R,8S)-1-(3,4-dimethoxyphenyl)-2-[4-(3-hydroxy-1-propenyl)-2-methoxyphenoxy]-propane-1,3-diol (1) and a new stereoisomer of tetrahydrofuranoid lignan, (7R,8S,7′S,8′R)-(3,4,5,3′,4′)-pentamethoxy-9,7′-dihydroxy-8.8′,7.O.9′-lignan (2) along with seven known lignans and neolignans (3—9) were isolated from the methanol extracts of the flower buds of Magnolia fargesii. The structures of these compounds...