Complete1H and13C NMR Chemical Shift Assignments for Some Pentacyclic Oxindole Alkaloids
- 1 March 1992
- journal article
- research article
- Published by Taylor & Francis in Spectroscopy Letters
- Vol. 25 (2) , 293-300
- https://doi.org/10.1080/00387019208020694
Abstract
The complete analysis of the 1H and 13C NMR has been performed for four pentacyclic oxindole alkaloids: mitraphylline, isomitraphylline, speciophylline and pteropodine. The total assignment of the 1H NMR parameters was achieved from combined evaluation of homonuclear shift correlation and J-resolved diagrams, while DEPT spectra and selective decoupling experiments provided all carbon chemical shifts.Keywords
This publication has 8 references indexed in Scilit:
- Isolation of Isopreropodine from the Marine Mollusk Nerita albicilla: Establishment of the Structure via Two Dimensional NMR TechniquesJournal of Natural Products, 1986
- Two-dimensional J-resolved 1H n.m.r. spectroscopy for studies of biological macromoleculesBiochemical and Biophysical Research Communications, 1977
- General methods of synthesis of indole alkaloids. 14. Short routes of construction of yohimboid and ajmalicinoid alkaloid systems and their carbon-13 nuclear magnetic resonance spectral analysisJournal of the American Chemical Society, 1976
- Homonuclear broad band decoupling and two-dimensional J-resolved NMR spectroscopyThe Journal of Chemical Physics, 1976
- Two-dimensional spectroscopy. Application to nuclear magnetic resonanceThe Journal of Chemical Physics, 1976
- Chromatographic and spectroscopic methods for the identification of alkaloids from herbarium samples of the genus uncariaJournal of Chromatography A, 1975
- Carbon-13 nuclear magnetic resonance spectroscopy of naturally occurring substances. AlkaloidsAccounts of Chemical Research, 1974
- The alkaloids of the leaves of Mitragyna inermis (Willd.) O. KuntzeJournal of Pharmacy and Pharmacology, 1969