Nuclear Magnetic Resonance Spectroscopy and Mass Spectrometry of Solanidine, Leptinidine, and Acetylleptinidine. Steroidal Alkaloids from <i>Solanum chacoense</i> Bitter
作者:David R. Lawson、Terrence P. Green、LeRoy W. Haynes、A. Raymond Miller
DOI:10.1021/jf9702914
日期:1997.10.1
Solanidine, leptinidine, and acetylleptinidine from Solanum chacoense Bitter were structurally characterized by high-resolution MS and high-field H-1-NMR and C-13-NMR. H-1-NMR and C-13-NMR chemical shifts were assigned for solanidine and acetylleptinidine using DEPT, HMBC, and HMQC. Complete carbon chemical shift assignments are presented for all three alkaloids. The orientation of the C-23 acetoxyl group of acetylleptinidine was determined to be axial.