Two labdane diterpenes were isolated from the seeds and the rhizomes of AFRAMOMUM ALBOVIOLACEUM (Ridley) K. Schum (Zingiberaceae) and identified by GC-MS, (1)H-, and (13)C-NMR as ( E)-labda-8(17),12-diene-15,16-dial ( 1) and ( E)beta,17-epoxy-labd-12-ene-15,16-dial ( 2). A third minor compound could be the methyl ( E)-14xi,15-epoxylabd-8(17),12-dien-16-oate. The simultaneous occurrence of these three molecules has been mentioned only in one other species of the same genus, AFRAMOMUM DANIELLII (1).
Characterization of Three Labdane Diterpenes from Aframomum alboviolaceum. Publishing Authors By Initials