Abstract
From the aerial part of Bupleurum kunmingense Y. Li et S. L. Pan, three new saikosaponin derivatives named BK1, BK2 and BK3 were isolated and their structures determined as 3-O-β-glucopyranosyl-(1→6)-(α-rhamnopyranosyl-(1→4))-β-glucopyranoside of 16-epi-saikogenin C, 3-O-β-glucopyranosyl-(1→6)-(α-rhamnopyranosyl-(1→4))-β-glucopyranoside of 30-hydroxy-16-epi-saikogenin C, and 28-O-β-glucopyranosyl-3-O-β-glucopyranosyl-(1→6)-(α-rhamnopyranosyl-(1→4))-β-glucopyranoside of 16-epi-saikogenin C, respectively.
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