Synthesis of SB 222618. A potential PDE IV inhibitor
摘要:
PDE IV inhibitor SE 222618 was prepared by regioselective S(N)2' addition of 9 to bromoallene 6a followed by a stereoselective borane reduction of 4 to afford 2 which by a palladium mediated coupling with 3, delivered SE 222618 (1) in good yield. (C) 2000 Elsevier Science Ltd. All rights reserved.