In this work, we attempted to synthesize thioflavonols using rearrangement of phenacyl thiosalicylates prepared by two different approaches and subjected to cyclization under acidic conditions. Contrary to our expectations, the isolated products were identified as (3-hydroxybenzo[b]thiophen-2-yl)(phenyl)methanones. The detailed reaction mechanism was elucidated by characterization of all reaction intermediates
[EN] BENZOFURANS AND BENZOTHIOPHENES<br/>[FR] BENZOFURANES ET BENZOTHIOPHENES
申请人:MERCK PATENT GMBH
公开号:WO2005054226A1
公开(公告)日:2005-06-16
The invention relates to compounds of the general formula (I), in which R1, R2, R3, R4, R5, R6 and X are as defined in Claim 1. These compounds can be used in the treatment of pathologies associated with insulin resistance syndrome.
The present invention provides compounds capable of binding to an Fc receptor and modulating Fc receptor activity comprising a core lipophilic group in the form of an Aryl zing substituted with a group rich in p-electrons. The invention further provides for a method of treating an autoimmune disease involving Fc receptor activity using such compounds. A method for obtaining a compound which modulates Fc receptor activity is also provided, the method comprising: (a) providing or designing compounds having structural characteristics to fit in the groove of the FcγRIIa structure; and (b) screening the compounds for modulating activity on the Fc receptor.
2-aroylbenzo[b]thiophen-3-ol in high yield. To investigate the utility of the synthesized benzothiophene scaffold, an alkyne moiety was introduced at the 3-hydroxy position and subsequently subjected to a click reaction to form novel benzothiophene-triazole hybrids in good yields. A simple and straightforward approach to synthesizing 2-aroylbenzo[b]thiophen-3-ols can open new avenues for discovering novel
提出了一种在三乙胺存在下,由 2-巯基苯甲酸和各种取代芳基溴甲基酮合成 2-芳酰基苯并[ b ]噻吩-3-醇的有效一锅法。该反应可能是通过在碱存在下,硫代水杨酸中的巯基对溴甲基酮进行 S N 2 型亲核攻击来进行,得到硫烷基苯甲酸,其在原位进行分子内环化,得到 2-芳酰基苯并[ b ]噻吩-3-醇的产率很高。为了研究合成的苯并噻吩支架的实用性,在3-羟基位置引入炔部分,然后进行点击反应,以良好的产率形成新型苯并噻吩-三唑杂化物。一种简单直接的合成 2-芳酰基苯并[ b ]噻吩-3-醇的方法可以为发现新型生物和药物化合物开辟新途径。
Behaghel; Ratz, Chemische Berichte, 1939, vol. 72, p. 1257,1269