The Structure of Gibberellin A23 and the Biological Properties of 3,13-Dihydroxy C20-Gibberellins |
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| Authors: | Hiroshi Fukui Hiroo Ishii Koichi Koshimizu Masayuki Katsumi Yukiyoshi Ogawa Tetsuo Mitsui |
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| Institution: | 1. Department of Food Science and Technology, Faculty of Agriculture, Kyoto University, Kyoto;2. Biology Department, International Christian University, Osawa, Mitaka, Tokyo;3. Faculty of Agriculture, Mie University, Tsu, Mie Pref. |
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| Abstract: | Two aldehydic C20-gibberellins, L-2 and L-4, were isolated from the immature fruits of yellow lupine (Lupinus luteus L.). L-2 was shown to have the structure II and named gibberellin A23. L-4 was identified as gibberellin A19(VI). Two new C20-gibberellins, tentatively called 3,13-dihydroxy GA15(IV) and 13-hydroxy GA15(VIII), were derived from gibberellins, A23 and A19, respectively. The biological activities of four 3,13-dihydroxy C20-gibberellins-GA18(I), GA23(II), GA28(III) and 3,13-dihydroxy GA15(IV), which were isolated from the fruits except for 3,13-dihydroxy GA15—were compared in six gibberellin bioassays. |
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