1H-NMR and 13C-NMR Assignments of Cryptolepine, A 3:4-Benz-delta-carboline Derivative Isolated from Cryptolepis sanguinolenta.
Ablordeppey SY, Hufford CD, Borne RF, Dwuma-Badu D. 1H-NMR and 13C-NMR Assignments of Cryptolepine, A 3:4-Benz-delta-carboline Derivative Isolated from Cryptolepis sanguinolenta. Planta Med. 1990 Aug; 56(4):416-7.