Synthesis and Biological Activities of 4-Trifluoromethylindole-3-acetic Acid: A New Fluorinated Indole Auxin
作者:Masato KATAYAMA、Yuko MASUI、Eiji KAGEYAMA、Youichi KAWABATA、Kozo KANAYAMA
DOI:10.1271/bbb.80138
日期:2008.8.23
biological activities of these compounds were compared by three bioassays with those of indole-3-acetic acid and 4-chloroindole-3-acetic acid (4-Cl-IAA), which, like 4-CF(3)-IAA and 4-CH(3)-IAA, has a substituent at the 4-position of the indole nucleus. 4-CF(3)-IAA showed strong root formation-promoting activity with black gram cuttings which was 1.5 times higher than that of 4-(3-indole)butyric acid at 1x10(-4)
在我们对树木cutting插根形成新促进剂的研究中,通过4-三氟甲基吲哚和4-三氟乙酸合成了一种新的氟化生长素4-三氟甲基吲哚-3-乙酸(4-CF(3)-IAA)。三氟甲基吲哚-3-乙腈,以2-甲基-3-硝基苯并三氟为原料。作为比较生物活性的对照化合物,还以2,3-二甲基硝基苯为原料合成了4-甲基吲哚-3-乙酸(4-CH(3)-IAA)。通过三种生物测定法将这些化合物的生物活性与吲哚-3-乙酸和4-氯吲哚-3-乙酸(4-Cl-IAA)进行了比较,后者与4-CF(3)-IAA和4 -CH(3)-IAA在吲哚核的4位上具有取代基。4-CF(3)-IAA在1x10(-4)M时显示出很强的根形成促进活性,带有黑克屑,比4-(3-吲哚)丁酸高1.5倍.4-CH(3) -IAA尽管对白菜的下胚轴生长有强烈的抑制作用,而在黑克中却促进下胚轴膨胀和侧根形成,但它仅能弱地促进根形成。另一方面,在这两种生物测