Functionalisation of the alkoxy group of alkyl aryl ethers. Demethylation, alkylthiolation and reduction of 5-methoxyindoles
摘要:
In the presence of AlX(3)-RSH three kinds of reactions may take place with 5-methoxy indoles : demethylation, alkylthiolation and reduction. The two latter reactions have never been observed to the present, with such reagents. Considerable improvement in the selective demethylation was found when PhCH(2)SH replaced EtSH previously used in such transformations. Factors leading to selective alkylthiolations or reductions are shown and mechanisms are proposed to explain these new reactions.
Indoles substitués et les compositions pharmaceutiques qui les contiennent
申请人:ADIR ET COMPAGNIE
公开号:EP0624575A1
公开(公告)日:1994-11-17
Composés de formule générale (I) :
dans laquelle :
X représente O ou S,
X' représente O, S ou H₂,
et R₁, R₂, R₃ et R₄ sont tels que définis dans la description.
Ces composés trouvent leur application en thérapeutique dans le traitement ou la prévention des affections dues ou reliées à des phénomènes de peroxydation et notamment les désordres ischémiques cérébraux, rénaux ou cardiaques et les maladies métaboliques notamment l'athérome et l'artériosclérose, ainsi que l'inflammation.
通式(I)化合物:
其中
X 代表 O 或 S
X' 代表 O、S 或 H₂、
且 R₁、R₂、R₃ 和 R₄ 如说明中所定义。
这些化合物可用于治疗或预防过氧化现象引起的或与之相关的疾病,特别是脑、肾或心脏缺血性疾病和代谢性疾病,尤其是动脉粥样硬化和动脉硬化,以及炎症。
Novel Indole-2-carboxamide and Cycloalkeno[1,2-<i>b</i>]indole Derivatives. Structure−Activity Relationships for High Inhibition of Human LDL Peroxidation
Series of indole-2-carboxamide and cycloalkeno[1,2-b]indole derivatives were synthesized and evaluated in order to determine the necessary structural requirements for a high inhibition of human LDL copper-induced peroxidation. Various modulations were systematically performed on the indole and cycloalkeno[1,2-b]indole nuclei as well as on the carboxamide moiety. The best compounds (3c, 3e, 7c, 7f, 7h, 7g, and 7o) are between 5 and 30 times more active than probucol itself. Two of these compounds (3c and 70) were selected for complementary in vitro and in vivo investigations, which have shown additional properties of interest for the treatment and the prevention of atherosclerosis injuries. Compound 3e was found to have some antiinflammatory properties while compound 70 was proved to protect endothelial cells from the direct cytotoxicity of oxidized LDL with some additional calcium channel blocking properties.
7Caubere Catherine, Caubere Paul, Renard Pierre, Bizot-Espiart Jean-Guy, +, Synth. Commun, 24 (1994) N 13, S 1799-1808