A C,O-DIGLUCOSYLATED OXANTHRONE FROM ALOE-LITTORALIS

A new C,O-diglucosylated oxanthrone, named littoraloside, has been iso lated from the leaf exudate of Aloe littoralis, along with the previou sly reported compounds, littoraloin, deacetyllittoraloin and 10-hydrox yaloin B. The structure, including the stereochemistry of littoralosid e was established on the basis of spectral analyses, as well as by con version to deacetyllittoraloin and to 10-hydroxyaloin B by enzymatic a nd acid catalyzed hydrolysis, respectively. (C) 1998 Published by Else vier Science Ltd. All rights reserved.