13C-NMR spectra of cannbinoids. Part 2. Side-chain substituted tetrahydrocannabinols and synthetic intermediates

The ¹³C-NMR spectra of eight semi-synthetic side-chain substituted cannabinoids and of eight synthetic intermediates were analyzed in detail. Assignments of the signals are based on their chemical shifts, splitting patterns in ¹H-off-resonance decoupling experiments, incremental calculations, and model considerations.