A new triterpenoid saponin named bredemeyeroside B has been isolated from the roots of Bredemeyera floribunda and its structure elucidated as 3-O-JJ-D-glucopyranosyl-2fl,3J1,27trihydroxyolean-1 2-en-23,28-dioic acid 28-O-/J-o-xylopyranosyl-(1 -4)-[Ji-o-apiofuranosyl-(1 -*3)J-a-L-rhamnopyranosyl-( 1 -2)a-L-rhamnopyranosyl-(1 -3]-/J-n-fucopyranoside by means of MS, NMR and chemical evidence. In addition rutin was also isolated. In laboratory tests bredemeyeroside B showed snake venom antidote activity.

No abstract

A new triterpenoid saponin named bredemeyeroside D has been isolated from Bredemeyera floribunda Willd. and its structure elucidated as 3‐O‐β‐D‐glucopyranosyl‐2β,3β,27‐trihydroxyolean‐12‐en‐23,28‐dioic acid 28‐O‐β‐D‐xylopyranosyl ‐ (1−4) ‐ α ‐ L ‐ rhamnopyranosyl ‐ (1→2) ‐ [α ‐ L ‐ rhamnopyranosyl ‐ (1→3)] ‐ β ‐ D ‐ fucopyranoside by means of MS, NMR and chemical evidences. In laboratory testings bredemeyeroside D showed a significant snake venom antidote activity.