Constituents of Papaver bracteatum: O-methyl-α-thebaol and 10-n-nonacosanol. Lanthanide-induced chemical shifts in 1H NMR and 13C NMR
作者:Hubert G. Theuns、Richard H.A.M. Janssen、Hubertus W.A. Biessels、Cornelis A. Salemink
DOI:10.1016/s0031-9422(00)80828-6
日期:1985.1
O-Methyl-α-thebaol is a new natural compound. The presence of isothebaine is confirmed. Lanthanide-induced chemical shifts can be used for the assignments of the 13C NMR chemical shifts of isothebaine and phenanthrenes. The use of lanthanide-induced chemical shifts in the identification of methoxyl resonances in 1H NMR is discussed.
Determination of neutral manufacturing impurities in heroin by capillary gas chromatography with electron capture detection after reduction with lithium aluminum hydride and derivatization with heptafluorobutyric anhydride
作者:James M. Moore、Andrew C. Allen、Donald A. Cooper
DOI:10.1021/ac00297a005
日期:1986.5.1
Beckett; Wright, Journal of the Chemical Society, 1876, vol. 29, p. 657
作者:Beckett、Wright
DOI:——
日期:——
Freund, Chemische Berichte, 1897, vol. 30, p. 1386