Beschreibung:
<jats:title>Abstract</jats:title><jats:p>Two new triterpenoid 3,28‐<jats:italic>O</jats:italic>‐bisglycosides, MS‐1 and MS‐2, were isolated from the Merck Saponin (origin: <jats:italic>Gypsophila paniculata</jats:italic> L.). Their structures were elucidated on the basis of chemical and spectral data as follows. MS‐1 (<jats:bold>1</jats:bold>): 3‐<jats:italic>O</jats:italic>‐β‐<jats:sc>D</jats:sc>‐galactopyranosyl‐(→2)‐[α‐<jats:sc>L</jats:sc>‐arabinopyranosyl‐(→3)]‐β‐<jats:sc>D</jats:sc>‐glucuronopyranosyl gypsogenin 28‐<jats:italic>O</jats:italic>‐β‐<jats:sc>D</jats:sc>‐xylopyranosyl‐(→3)‐ β‐<jats:sc>D</jats:sc>‐xylopyranosyl‐(→4)‐α‐<jats:sc>L</jats:sc>‐rhamnopyranosyl‐(→4)‐[β‐<jats:sc>D</jats:sc>‐quinovopyranosyl‐(→2)]‐β‐<jats:sc>D</jats:sc>‐ fucopyranoside. MS‐2(<jats:bold>2</jats:bold>): 3‐<jats:italic>O</jats:italic>‐β‐<jats:sc>D</jats:sc>‐galactopyranosyl‐(→2)‐[α‐<jats:sc>L</jats:sc>‐ arabinopyranosyl‐(→3)]‐β‐<jats:sc>D</jats:sc>‐glucuronopyranosyl quillaic acid 28‐<jats:italic>O</jats:italic>‐β‐<jats:sc>D</jats:sc>‐xylopyranosyl‐(→3)‐β‐<jats:sc>D</jats:sc>‐xylopyranosyl‐(→4)‐α‐<jats:sc>L</jats:sc>‐rhamnopyranosyl‐(→4)‐[β‐<jats:sc>D</jats:sc>‐quinovopyranosyl ‐(→2)]‐β‐<jats:sc>D</jats:sc>‐fucopyranoside. The hydrothermal degradation, which led to selective cleavage of the ester glycosidic linkage, was useful for the structure elucidation.</jats:p>