Determination of the Absolute Configuration of a Monoglyceride Antibolting Compound and Isolation of Related Compounds from Radish Leaves (<i>Raphanus sativus</i>)
作者:Tsuyoshi Ogihara、Naruki Amano、Yuki Mitsui、Kaien Fujino、Hiroyuki Ohta、Kosaku Takahashi、Hideyuki Matsuura
DOI:10.1021/acs.jnatprod.6b00746
日期:2017.4.28
A monoglyceride (1) has been reported to possess an antibolting effect in radish (Raphanus sativus), but its absolute configuration at the C-2 position was not determined earlier. In this work, the absolute configuration of 1 was determined to be (2S), and it was also accompanied by one new (2) and two known monoglycerides (3 and 4). The chemical structure of 2 was determined as β-(7′Z,10′Z,13′Z)-hexadecatrienoic
据报道,甘油单酯(1)在萝卜(Raphanus sativus)中具有抗肥胖作用,但其C-2位置的绝对构型尚未确定。在这项工作中,确定1的绝对构型为(2 S),并且还伴有一个新的(2)和两个已知的甘油单酸酯(3和4)。的化学结构2被确定为β-(7' Ž,10' Ž,13' Ž)-hexadecatrienoic单甘油酯(β-16:3单甘油酯)。定性和对化合物的定量分析方法1 -使用两种氘标记的化合物(8和9)作为内标开发了4种化合物。结果显示的分布更宽范围的1 - 4在几个年度冬季作物。还发现这些分离的化合物在培养基中浓度为25和50μM时对拟南芥幼苗的根伸长具有抑制作用。然而,的抑制作用1不依赖于coronatin不敏感的1(COI1)蛋白,这可能意味着比茉莉酮酸信令其它未识别的信号系统的参与。