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The study of the chinese drugs of umbelliferae part 1 on the chemical constituents of the roots of angelica apaensis heracleum rapula and heracleum scabridum



The study of the chinese drugs of umbelliferae part 1 on the chemical constituents of the roots of angelica apaensis heracleum rapula and heracleum scabridum



Acta Botanica Sinica 20(3): 244-254



The ether extract of the root of A. apaensis Shan et Yuan growing in the Tongtchouan, Yunnan [China], afforded 6 kinds of linear furocoumarins: oxypeucedanin, isoimperatorin, oxypeucedanin hydrate, byakangelicol, byakangelicin and a compound with mp [melting point] 138-142.degree. C, C16H14O5, which was determined from UV-IR spectra to be a linear furocoumarin derivative having a C5-substituent in the molecule. The extract also yielded .beta.-sitosterol, .gamma.-sitosterol, lignoceric acid, essential oil (0.24%) and 2 white crystalline substances, mp 272-275.degree. C and mp 72-75.degree. C, respectively. Ether extract of the root of H. rapula Fr. growing wild in the Kunming, Yunnan, afforded 5 kinds of coumarins: osthol, imperatorin, isopimpinellin, (+) marmesin and heraclenol. The essential oil (0.36%) was also obtained. Dried roots of H. scabridum Fr. growing in Kunming were extracted with ether and afforded 4 kinds of coumarins: isobergapten, pimpinellin, isopimpinellin and sphondin. Imperatorin and marmesin were detected by TLC.

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