摘要:
A rapid novel synthetic route to the potent reversible butyrylcholinesterase inhibitor (-)-N-1,N-8-bis-norcymserine (1) is reported from physostigmine (2) in a 20% total yield. Details on the formation of the imino-quinone 6 obtained in the oxidation of N-1-benzylnoresermethole (4) and its conversion into N-1-bis-noreseroline (7) are given. As expected, the product of this synthesis, (1), had identical biological activity to the same agent produced by total synthesis. (C) 2000 Elsevier Science Ltd. All rights reserved.