APORPHINE ALKALOIDS OF LITSEA ROTUNDIFOLIA AND L. ROTUNDIFOLIA VAR. OBLONGIFOLIA Aporphine alkaloids from branches and leaves of Polyalthia nemoralis Aporphine Alkaloids from branches and leaves of Polyalthia nemoralis Aporphine alkaloids from Litsea greenmaniana Progress on anticancer activity of aporphine alkaloids Progress on anticancer activity of aporphine alkaloids Uvarilactam, a New Lactam from Uvaria microcarpa (Annonaceae)