A direct synthesis of 5,6-dihydroindolo[2,1-a]isoquinolines that exhibit immunosuppressive activity
摘要:
Dihydroindolo[2,1-a]isoquinolines were synthesized from tetrahydroisoquinolines and alpha-fluoroaldehydes by a novel two-step procedure. These compounds exhibited significant immunosuppressive activity against IL-2, IL-10 and IFN-gamma. (C) 2009 Elsevier Ltd. All rights reserved.
An N‐heterocyclic carbene catalyzed photooxidation reaction via intramolecular cross dehydrogenative coupling of tetrahydroisoquinoline‐tethered aldehydes was developed, giving the corresponding oxidative cyclization products in moderate to good yields. This reaction features mild conditions with oxygen as the terminal oxidant in the absence of photocatalyst.