01-06-2019 | Alkaloids | Note
New otonecine-type pyrrolizidine alkaloid from Petasites japonicus
Published in: Journal of Natural Medicines | Issue 3/2019
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One new otonecine-type pyrrolizidine alkaloid secopetasitenine (1), along with petasitenine (fukinotoxine, 2), neopetasitenine (3), and senkirkine (4), was isolated from the whole plant of Petasites japonicus. The structure of 1 was determined by spectroscopic analyses and chemical conversion from the known alkaloid petasitenine (2).