Department of Chemistry, University Science Center, The Chinese University of Hong Kong, Hong Kong.
Extracts of the roots of TINOSPORA CAPILLIPES Gagnep. (Menispertnaceae) afforded the quaternary protoberberine alkaloids palmatine, jatrorrhizine, columbamine, stepharanine and dehydrodiscretamine and the quaternary aporphine alkaloids menisperine and magnoflorine.