“…[5][6][7][8][9] From this tropical plant, no less than 69 such compounds have so far been isolated, many of them with unique molecular scaffolds. 5,[10][11][12][13][14][15][16][17][18] With 33 examples, 5,10,11,13,14,17 naphthyltetrahydroisoquinoline alkaloids such as ancistrobrevine A (1), its 6-O-demethyl analogue 2, 5,14 and ancistrobrevine D (3) 5,13 (Fig. 1) constitute the major portion of compounds produced by the plant.…”