Two new lupin alkaloids, ( -)-N-(2-oxopyrrolidinomethyl)cytisine and (-)-N-
(N-acetylaminomethyl)cytisine, were isolated together with 9 known alkaloid
s from Chinese Maackia hupehensis, which grows in the south of China. The a
lkaloidal constituents of M. hupehensis were shown to be comparable to thos
e of the southern species of Japanese Maackia plants.