STUDIES ON THE SWEET PRINCIPLES FROM THE LEAVES OF CYCLOCARYA PALIURUS(BATAL.)ILJINSKAYA

Four intensely sweet compounds (Ⅰ～Ⅳ) were obtained from the leaves of Cyelocarya paliurus (Batal.) Iljinskaya. The Structure of compound I was elucidated by chemical and spec-troscopic methods as 20,24-epoxy-dammarane- (3β, 12β,24R)-12-O-α-L-rhamnopyranosyl-25-hy-droxyl-3-O-α-(5′-O-acetyl)-L-arabinofuranoside. It is a new natural product, named cyclocariosidcA, and is the main sweet principle of this plant, possessing about 200 times the sweetness intensity ofsugar.