Tetrahydroisoquinoline alkaloids and 2-deoxyribonolactones from Aristolochia arcuata

Abstract

2-Deoxyribonolactones and four tetrahydroisoquinoline alkaloids were isolated from the acetone extract of the leaves of Aristolochia arcuata Mast., together with pinitol, sequoyitol, glycerol, fructose, sucrose, eupomatenoid-7, salsolinol, and 6,7-dihydroxyl,1-dimethyl-1,2,3,4-tetrahydroisoquinoline. Their structures were determined on the basis of spectroscopic methods, mainly using H-1, C-13, N-15, and P-31 NMR. (C) 2003 Elsevier B.V. Ltd. All rights reserved.