Morita H, Nagashima S, Takeya K, Itokawa H
Department of Pharmacognosy, Tokyo College of Pharmacy, Japan.
Chem Pharm Bull (Tokyo). 1995 Feb;43(2):271-3. doi: 10.1248/cpb.43.271.
A new peptide called astin J (1) was isolated from the roots of Aster tataricus. The structure was elucidated by spectroscopic methods and chemical transformation from a cyclic pentapeptide, astin C, isolated from A. tataricus to the analogous acyclic peptide, 2. Antileukemic activities of the series of acyclic peptides are also described.