. . . "Sangre de grado resin or sap contains phytochemicals including proanthocyanidins (antioxidants), simple phenols, diterpenes, phytosterols, and biologically active alkaloids and lignans Scientists have attributed many of the biologically active properties of the sap (especially its wound-healing capacity) to two main active constituents: an alkaloid named taspine, and a lignan named dimethylcedru" .