摘要:
Based on information from X-ray, NMR, and SAR data, the N,O-diMeTyr(5) unit of didemnin B was believed to interact with receptors. To ascertain the importance of this unit, an analog was synthesized in which the N,O-diMeTyr(5) moiety was replaced with N-MeLeu. Preliminary biological testing showed that the analog retained antitumor activity and the ability to inhibit protein biosynthesis. Copyright (C) 1996 Elsevier Science Ltd