Principles of Peucedanum japonicum THUNB,pt.1

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  • Principles of Peucedanum japonicum THUNB. I. Isolation of New Compounds ; Peucedalactone, Iso-peucedalactone, and Peucin.

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Three new compounds, peucedalactone, C16H18O5, m.p. 159.0°, isopeucedalactone, C16H18O5, m.p. 122.5°, and peucin, C15H14O4, m.p. 291.5∼292.0°, were isolated from the ether extract of Peucedanum japonicum THUNB. Peucedalactone and isopeucedalactone were obtained, together with a short-chain fatty acid (p-acid), after saponification of a resinous distillate, b.p1 210∼220°, of the extract. All these three new compounds were optically active and seemed to have coumarin-like skeleton. Some of their properties were also described. Bergapten and palmitic acid were isolated besides above compounds.

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