Compounds are provided that act as potent antagonists of the CCR2 or CCR9 receptor. Animal testing demonstrates that these compounds are useful for treating inflammation, a hallmark disease for CCR2 and CCR9. The compounds are generally aryl sulfonamide derivatives and are useful in pharmaceutical compositions, methods for the treatment of CCR2-mediated diseases, CCR9-mediated diseases, as controls in assays for the identification of CCR2 antagonists, and as controls in assays for the identification of CCR9 antagonists.
Regioselective transformation of alkynes into cyclic acetals and thioacetals with a gold(I) catalyst: comparison with Brønsted acid catalysts
作者:Laura L. Santos、Violeta R. Ruiz、Maria J. Sabater、Avelino Corma
DOI:10.1016/j.tet.2008.06.032
日期:2008.8
Au(I) catalyzes the transformation of alkynes into cyclic acetals and thioacetals at much higher rate than Brønsted acids. The reaction appears to be general for a range of alkynes and diols or dithiols, which are efficiently transformed with high selectivities. One of the salient features of this reaction process is the high reactivity of the enol ether or enol thioether intermediates, which undergo
the structure of the isocyanide. The use of an electron-deficient aryl isocyanide, such as 2c and 2d, is required to selectively obtain the monoinsertion product. When aryl isocyanides containing alkyl substituents, such as 2a and 2b, are employed, two molecules of the isocyanide are incorporated, and the double-insertion product is obtained. The reaction of tert-octyl isocyanide also induces a double
描述了布朗斯台德酸催化异氰化物正式插入缩醛的 CO 键。各种非环状和环状缩醛可以应用于催化插入以形成 α-烷氧基亚胺酸酯。官能团,例如硝基、氰基、卤素、酯和烷氧基,可以耐受所采用的反应条件。反应过程高度依赖于异氰化物的结构。需要使用缺电子的芳基异氰化物,例如 2c 和 2d,以选择性地获得单插入产物。当使用含有烷基取代基的芳基异氰化物,例如2a和2b时,引入两个分子的异氰化物,得到双插入产物。叔辛基异氰化物的反应也诱导了双重掺入,但随后的酸介导的断裂会导致 2-烷氧基亚胺酰氰化物。单插入产物 α-烷氧基亚胺酸酯可以很容易地水解为 α-烷氧基酯,从而实现缩醛的正式羰基化。
Fused Heterocyclic Compounds as Ion Channel Modulators
申请人:Kobayashi Tetsuya
公开号:US20120010192A1
公开(公告)日:2012-01-12
The present disclosure relates to compounds that are sodium channel inhibitors and to their use in the treatment of various disease states, including cardiovascular diseases and diabetes. In particular embodiments, the structure of the compounds is given by Formula I:
wherein R
1
, R
2
, R
3
, R
4
, and R
5
are as described herein, to methods for the preparation and use of the compounds and to pharmaceutical compositions containing the same.
The present invention relates to substituted triazole compounds and compositions comprising substituted triazole compounds. The invention further relates to methods of inhibiting the activity of Hsp90 in a subject in need thereof and methods for preventing or treating hyperproliferative disorders, such as cancer, in a subject in need thereof comprising administering to the subject a substituted triazole compound of the invention, or a composition comprising such a compound.