¹³C nuclear magnetic resonance spectra of several hydroxy diterpene derivatives

Abstract

Abstract 13 C NMR spectra of several hydroxy diterpene derivatives having a pimarane, isopimarane and (13S, 8α)rosane skeleton have been recorded. The most significant effects caused by the introduction of hydroxyl groups in such a skeleton are demonstrated. The magnitudes of the γ‐ and δ‐effects are large enough to allow their use in sterochemical assignments.