Electric field effects in13C NMR of some quaternary morphinan derivatives
作者:Hubert G. Theuns、Richard H. A. M. Janssen、Hubertus W. A. Biessels、Cornelis A. Salemink
DOI:10.1002/mrc.1270221214
日期:1984.12
Abstract13C NMR chemical shifts are assigned for some quaternary morphinan derivatives, including the ‘minor isomer’ of the thebaine N‐oxides. In quaternary morphinan alkaloids having an 8.14‐double bond, electric field effects cause unusual 13C NMR shifts.
Slavik, Jiri; Slavikova, Leonora, Collection of Czechoslovak Chemical Communications, 1985, vol. 50, # 5, p. 1216 - 1226