Structural elucidation of germine esters isolated from Veratrum nigrum L. Total assignment of 1H and 13C nuclear magnetic resonances by two-dimensional NMR techniques

Nuclear Magnetic Resonance Spectroscopy

Nuclear Magnetic Resonance Spectroscopy for Structure Elucidation of Vitamin B12 Derivatives: Complete Interpretation of the13C-NMR Spectrum of Dicyanocobyrinic Acid Heptamethyl Ester and Partial Assignment of Its1H-NMR Spectrum

✍ Ernst, Ludger 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 537 KB

## Abstract The ^13^C‐NMR chemical shifts of dicyanocobyrinic acid heptamethyl ester (**1**), an important corrinoid model compound, are correlated with those of some derivatives. Isotope effects on the ^13^C chemical shifts (over two to four bonds) are observed for the 10‐deuterio and the 10,13‐di