1: 3β-O-{α-L-rhamnopyranosyl-(1-gt;3)-[β-D-xylopyranose-(1-gt;2)]-β-D-glucopyranosyl-(1-gt;4)-α-L-arabinopyranosyl}-3β-hydroxy-13β,28-epoxy-oleanan-16-oxo-30-al With hydrogenchloride in water T=90°C; 2 h; 2: With pyridine; hydroxylamine hydrochloride T=20°C; 24 h; 3: acetic anhydride With pyridine T=20°C; 24 h;

1: 3β-O-{α-L-rhamnopyranosyl-(1-gt;3)-[β-D-xylopyranose-(1-gt;2)]-β-D-glucopyranosyl-(1-gt;4)-α-L-arabinopyranosyl}-3β-hydroxy-13β,28-epoxy-oleanan-16-oxo-30-al With hydrogenchloride in water T=90°C; 2 h; 2: With pyridine; hydroxylamine hydrochloride T=20°C; 24 h; 3: acetic anhydride With pyridine T=20°C; 24 h;

1: 3β-O-{α-L-rhamnopyranosyl-(1-gt;3)-[β-D-xylopyranose-(1-gt;2)]-β-D-glucopyranosyl-(1-gt;4)-α-L-arabinopyranosyl}-3β-hydroxy-13β,28-epoxy-oleanan-16-oxo-30-al With hydrogenchloride in water T=90°C; 2 h; 2: With pyridine; hydroxylamine hydrochloride T=20°C; 24 h; 3: acetic anhydride With pyridine T=20°C; 24 h;