1-Acetyl-2-bromo-3-indolinone in the synthesis of thiazolo[5,4-b]indoles, their dihydroderivatives, and hexahydroimidazo[4,5-b]indol-2-ones
作者:V. S. Velezheva、A. Yu. Lepeshkin、O. A. Fedotova、V. I. Shvedov、K. F. Turchin、A. L. Sedov、O. S. Anisimova
DOI:10.1007/bf02333893
日期:1996.10
represented only by 2-methyl derivatives (7-H, 7-OCH3) synthesized proceeding from isatin oximes [4, 5]. Thiazolo[5,4-b]indoles were obtained via the Gunch reaction from bromindoxyl (I) and primary thioamides ( I Iallc). It was found that the result was significantly dependent on the substituent connected to the thioamide group. For example, reactions involving thioamides of phenylacetic (IIa), phenylpropionic
之前我们已经证明 1-乙酰基-2-溴3-吲哚酮(I,溴吲哚氧基)是一种方便的中间体,可将 1-乙酰基吲哚氧基转化为 2-烷基(芳基)-3 乙氧基羰基吡咯并 [3,2-b] 吲哚 [1]和 2-巯基(甲硫基)咪唑并 [4,5-b] 吲哚 [2, 3]。这些衍生物中的一些表现出药理学(特别是抗缺氧)活性。本研究是致力于开发获得唑并[4,5-b]吲哚,特别是噻唑并[5, 4-b]吲哚和咪唑并[4,5-b]的一般制备方法的系列工作的延续。 ]吲哚,在唑环中具有各种取代基。在文献中,噻唑并[5,4-b] 吲哚系列仅由靛红肟合成的 2-甲基衍生物 (7-H, 7-OCH3) 表示 [4, 5]。噻唑啉[5, 4-b]吲哚是通过溴吲哚 (I) 和伯硫代酰胺 (I Iallc) 的 Gunch 反应获得的。发现结果显着取决于连接到硫代酰胺基团的取代基。例如,涉及苯乙酸 (IIa)、苯丙酸 (lib) 和氰基乙酸