Synthesis and Bioactivity of Potassium β-<scp>D</scp>-Glucopyranosyl 12-Hydroxy Jasmonate and Related Compounds
作者:Yoko NAKAMURA、Ryoji MIYATAKE、Sho INOMATA、Minoru UEDA
DOI:10.1271/bbb.80338
日期:2008.11.23
Albizzia saman, a leguminous plant, is known to open its leaves in the daytime and sleep at night with the leaves folded. β-d-Glucopyranosyl 12-hydroxyjasmonate (1) was isolated as an endogenous chemical factor controlling this leafmovement. We developed a concise synthesis of optically pure (−)-1 in 9 steps from (+)-2 with a total yield of 58%. Similarly, such analogs of 1 as epi-LCF (13), enantiomer (14), and galactoside (19) were synthesized for a structure activity relationship (SAR) study. The results of this SAR study strongly suggest that the mechanism for the leaf-closing activity of 1 would be different from that of methyl jasmonate, and also suggest the involvement of a different kind of target protein which recognizes the trans-isomer of a jasmonate derivative.
Albizzia saman是一种豆科植物,它在白天气息张开的叶子,夜间则将叶子折叠休息。β-d-葡萄糖吡喃苷12-羟基茉莉酸酯(1)被鉴定为控制这种叶子运动的内源性化学因子。我们开发了一种简洁的合成方法,通过9个步骤从(+)-2合成光学上纯净的(−)-1,总产率为58%。同样,作为结构-活性关系(SAR)研究的类物质1的类似物,如epi-LCF(13)、对映体(14)和半乳糖苷(19)也被合成。SAR研究的结果强烈表明,1的闭叶活性的机制与甲基茉莉酸酯的机制不同,并且还表明涉及了一种不同类型的靶蛋白,该蛋白识别茉莉酸衍生物的反式异构体。