Structure and Stereochemistry of Pseudolarolide-I, a Novel Cytotoxic Peroxytriterpene Dilactone from Pseudolarix kaempferi

Abstract

A novel cytotoxic peroxylriterpene dilactone, pseudolarolide 1, has been isolated from the seeds of Pseudolnrix knempferi, and its structure and stereochemistry have been established from spectral data in conjunction with a singlecrystal X-ray analysis.