Nummularine-s: A cyclopeptide alkaloid from stem bark of Zizyphus nummularia

Abstract

From the stem bark of Zizyphus nummularia a 13-membered cyclopeptide alkaloid containing a short side chain has been isolated. The structure was determined by spectroscopic methods and chemical degradation. Zizyphus nummularia seems to be closely related to Z. jujuba, Z. sativa and Z. amphibia. © 1989.