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Clerodane diterpenoids from the roots of Portulaca pilosa |
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| Authors: | Ayumi Ohsaki Yoshihisa Kasetani Yukihiro Asaka Kozo Shibata Takashi Tokoroyama and Takashi Kubota |
| Institution: | School of Medicine, Kinki University, Osaka-sayama, Osaka 589, Japan a Faculty of Science, Osaka City University, Sumiyoshi-ku 558, Japan |
| Abstract: | Three trans-clerodane diterpenoids, pilosanol A, B and C, the last compound being a glucoside, have been isolated from the roots of Portulaca pilosa. They show a marked contrast in skeletal type with the constituents of aerial part. Evolutionary changes in the biosynthetic abilities of Portulaca species is discussed. |
| Keywords: | Portulaca pilosa Portulacaceae roots diterpene trans-clerodane pilosanol A B C diterpene glucoside biosynthesis evolution |
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