Identification of Brassinosteroids with Epimerized Substituents and/or the 23-Oxo Group in Pollen and Anthers of Japanese Cedar

Takao YOKOTA; Kyoko HIGUCHI; Nobutaka TAKAHASHI; Yasuo KAMURO; Tsuyoshi WATANABE; Suguru TAKATSUTO

doi:10.1271/bbb.62.526

Organic Chemistry Regular Papers

Identification of Brassinosteroids with Epimerized Substituents and/or the 23-Oxo Group in Pollen and Anthers of Japanese Cedar

Takao YOKOTA, Kyoko HIGUCHI, Nobutaka TAKAHASHI, Yasuo KAMURO, Tsuyoshi WATANABE, Suguru TAKATSUTO

著者情報

キーワード: Cryptomeria japonica, 23-dehydrobrassinolide, 28-homobrassinolide, dolicholide, 28-homodolicholide

ジャーナルフリー

1998 年 62 巻 3 号 p. 526-531

DOI https://doi.org/10.1271/bbb.62.526

詳細

抄録

Brassinosteroids in Japanese cedar (Cryptomeria japonica) were analyzed by GC-MS after being purified by reversed-phase HPLC. The occurrence of four stereoisomers of 23-dehydrobrassinolide, three stereoisomers of 28-homobrassinolide, and an isomer of homodolicholide was revealed. The stereochemical structures of these brassinosteroids remain undetermined. Among these, the 23-dehydrobrassinolide stereoisomers are the first brassinosteroids identified with an oxo group located at the C23 position. In addition, known brassinosteroids 3-dehydroteasterone, typhasterol and dolicholide were identified.

責任著者(Corresponding author)

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