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Japanese Journal of Environmental Entomology and Zoology
From the extracts of three Papaveraceous plants, i.e., Macleaya cordata (Willd.) R.Br., Corydalis incisa (Thunb.) Pers., and Chelidonium majus L. var. asiaticum (Hara) Ohwi., eight isoquinoline alkaloid compounds, i.e., protopine, allocryptopine, sanguinarine, chelerythrine, coryincine, (±)-corynoline, (+)-chelidonine, and (±)-stylopine, were isolated. Furthermore, their structures were spectroscopically determined. Among them, the absolute structure of coryincine was directly determined bydoi:10.11257/jjeez.30.51 fatcat:iqpogydshnb7lhnft54xctrqme