Studies on non-medicinal parts of plant materials: Triterpenes from the roots of Schisandra chinensis

Phytochemical study on a non-medicinal part of a plant material for herbal medicine, the roots of Schisandra chinensis, was conducted to isolate five new triterpenes, schinensins A–D (1–4) and 3-O-methylchangnanic acid (5), together with 21 known compounds including 10 triterpenes, one sterol, two sesquiterpenes, seven lignans, and one flavonoid. The structures of new triterpenes (1–5) were assigned on the basis of spectroscopic analyses aided...