“…Extracts from the stems of A. gehrtii were fractionated by chromatographic column, followed by preparative TLC, to afford the known lignans 1-5 4,12-18 , sitosterol (6) 19 , benzoic acids 8, 9 20,21 , isoquinolone alkaloid 10 11,22,23 , phenethyl derivatives 12-17 7,[24][25][26][27] , and the terpene 18 28 10,29 . From gCOSY, gTOCSY, gHMQC, and gHMBC experiments, it was possible to assign more feasible δ values for carbons and hydrogens, including C-3, C-1' to C-6' and H-3, H-1' to H-6', than those previously described in the literature 29 .…”