ISOLATION AND THE STRUCTURES OF TWO NEW ALKALOIDS, PETASITENINE AND NEOPETASITENINE FROM PETASITES JAPONICUS MAXIM.

ISOLATION AND THE STRUCTURES OF TWO NEW ALKALOIDS, PETASITENINE AND NEOPETASITENINE FROM <i>PETASITES JAPONICUS</i> MAXIM. New otonecine-type pyrrolizidine alkaloid from Petasites japonicus Fukinotoxin, a new pyrrolizidine alkaloid from Petasites japonicus. Carcinogenic Activity of Petasitenine, a New Pyrrolizidine Alkaloid Isolated From Petasites japonicus Maxim2 FARFUGINE, A NEW PYRROLIZIDINE ALKALOID ISOLATED FROM <i>FARFUGIUM JAPONICUM</i> KITAM. Two new alkaloids from the rhizome of Polygonatum sibiricum Macrocyclic pyrrolizidine alkaloids from Parsonsia laevigata Four New C20-Diterpene Alkaloids, Spirasine I, Spirasine II, Spirasine VII and Spirasine VIII from Spiraea japonica Two New Diterpenoid Alkaloids from Spiraea japonica L. f. var. fortunei(Planchon) Rehd. A Novel Phenylpropenoyl Sulfonic Acid and a New Chlorophyll from the Leaves of Petasites formosanus KITAMURA