向重力性
立体化学
化学
部分
烯烃
生物化学
基因
突变体
催化作用
拟南芥
作者
Mitsuru Shindo,Saki Makigawa,Keizo Kodama,Hiromi Sugiyama,Kenji Matsumoto,Takayuki Iwata,Naoya Wasano,Arihiro Kano,Miyo Terao Morita,Yoshiharu Fujii
出处
期刊:Phytochemistry
[Elsevier]
日期:2020-11-01
卷期号:179: 112508-112508
被引量:3
标识
DOI:10.1016/j.phytochem.2020.112508
摘要
Previously, we found (2Z,4E)-5-phenylpenta-2,4-dienoic acid (ku-76) to be a selective inhibitor of root gravitropic bending of lettuce radicles at 5 μM, with no concomitant growth inhibition, and revealed the structure–activity relationship in this inhibitory activity. The conformation of ku-76 is flexible owing to the open-chain structure of pentan-2,4-dienoic acid with freely rotating single bonds, and the (2Z)-alkene moiety may be isomerized by external factors. To develop more potent inhibitors and obtain insight into the target biomolecules, various analogues of ku-76, fixed through conformation and/or configuration, were synthesized and evaluated. Stereochemical fixation was effective in improving the potency of gravitropic bending inhibition. Finally, we found highly potent conformational and/or configurational analogues (ku-257, ku-294 and ku-308), that did not inhibit root growth. The inhibition of root curvature by these analogues was comparable to that of naptalam.
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