New antihepatotoxic naphtho-pyrone glycosides from the seeds of Cassia tora.

Two new naphtho-pyrone glycosides, 9-[(β-D-glucopyranosyl-(1→6)-O-β-D-glucopyranosyl)oxy]-10-hydroxy-7-methoxy-3-methyl-1H-naphtho[2,3-c]pyran-1 -one and 6-[(α-apiofuranosyl-(1→6)-O-β-D-glucopyranosyl)oxy]-rubrofusarin, together with cassiaside and rubrofusarin-6-β-gentiobioside were isolated from the seeds of Cassia tora L. Their structures were elucidated on the basis of chemical and spectral data