Spiroleucettadine: synthetic studies and investigations towards structural revision
摘要:
Synthetic efforts towards spiroleucettadine are described, including the enantioselective synthesis of the presumed biosynthetic precursor. High level density functional theory calculations were used to predict the C-13 NMR shifts of possible alternative structures and, along with a re-evaluation of the available NMR data, allow the proposal of revised structures for this spirocyclic alkaloid. (c) 2007 Elsevier Ltd. All rights reserved.
Spiroleucettadine: synthetic studies and investigations towards structural revision
摘要:
Synthetic efforts towards spiroleucettadine are described, including the enantioselective synthesis of the presumed biosynthetic precursor. High level density functional theory calculations were used to predict the C-13 NMR shifts of possible alternative structures and, along with a re-evaluation of the available NMR data, allow the proposal of revised structures for this spirocyclic alkaloid. (c) 2007 Elsevier Ltd. All rights reserved.