Three new 7,8-secolignans, schisandlignans A-C (1, 2, and 4), one new dibenzocyclooctadiene lignan, schisandlignan D (5), together with nine known lignans 3',4'-dimethoxybenzoic acid (3″,4″-dimethoxyphenyl)-2-methyl-3-oxobutyl ester (3), gomisin J (6), rubrisandrin A(1b) (7), interiotherin B (8),
The fruit of S. sphenanthera, known as "Nanwuweizi", has been widely used as traditional Chinese medicine for several thousand years. However, the current determination methods are not sufficient to evaluate its quality. An accurate, sensitive and reliable high performance liquid chromatography