[General pharmacological action of tritoqualine (TRQ; (+/-)-(R*)-7-amino-4, 5, 6-triethoxy-3-[(R*)-5, 6, 7, 8-tetrahydro-4-methoxy-6-methyl-1, 3-dioxolo [4, 5-g] isoquinolin-5-yl] phthalide].