抄録
(±)-Stylopine[N-14CH3] methochloride, L-methionine[S-14C] or DL-methionine-[S-13C] was administered by the cotton wick method to Corydalis incisa PERS in May and corynoline (1) was isolated. L-Methionine[S-14C] and DL-methionine[S-13C] were incorporated into corynoline (1) The positions labeled in corynoline (1) were determined to be the methylenedioxy, C-methyl and N-methyl groups by the degradation reaction and 1H-NMR spectrum.
