Triterpenoid saponins from Echinopsis macrogona (Cactaceae) |
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| Authors: | Okazaki Sachie Kinoshita Kaoru Ito Satoru Koyama Kiyotaka Yuasa Hiroshi Takahashi Kunio |
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| Institution: | a Department of Pharmacognosy and Phytochemistry, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose-shi, Tokyo 204-8588, Japan
b Research Institute of Evolutionary Biology, 2-4-28 Kamiyoga, Setagaya-ku, Tokyo 158-0098, Japan |
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| Abstract: | Triterpene saponins, pachanosides C1, E1, F1 and G1 (1-4), and bridgesides A1, C1, C2, D1, D2, E1 and E2 (5-11) were isolated from Echinopsis macrogona. Compounds 1-4 were saponins with pachanane type triterpene saponins, while the others (5-11) were oleanane type triterpene saponins. While the aglycones of 2-4 and 8-11 were hitherto unknown, the structure of pachanol C was revised in this paper. Their structures were elucidated on the basis of chemical and physicochemical evidence. |
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| Keywords: | Echinopsis macrogona Cactaceae Saponins Pachanane type Pahanoside Bridgeside |
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