Sesquiterpene lactones of Gaillardia pulchella |
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| Authors: | Seiichi Inayama Takeshi Kawamata Masaiti Yanagita |
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| Affiliation: | Pharmaceutical Laboratory, Medical School, Keio University, Shinjuku-ku, Tokyo, Japan |
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| Abstract: | A Japanese cultivar of Gaillardia pulchella Foug. contained, in addition to the pseudoguaianolides, pulchellin(I) and neopulchellin(II), the guaianolide, gaillardin(III) apparently accompanied by its epimer neogaillardin(IV) and an unidentified basic principle different from pulchellidine(V) and neopulchellidine(VI). A possible biogenetic scheme for the sesquiterpene lactones including eudesmanolides, pulchellin-B, -C, -E and -F(VII) is proposed. |
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| Keywords: | Compositae sesquiterpene lactones guaianolides (gaillardin, neogaillardin) pseudoguaianolides (pulchellin, neopulchellin) biogenetic scheme. |
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