Novel Alternative for the N−S Bond Formation and Its Application to the Synthesis of Benzisothiazol-3-ones
摘要:
The synthesis of a series of benzisothiazolone derivatives starting from the readily available methyl thiosalicylate is presented. The key cyclization step features the formation of a N-acylnitrenium ion, generated by the hypervalent iodine reagent PIFA, and its succeeding intramolecular trapping by the thiole moiety leading to the construction of the title compounds by formation of a new N-S bond.
Copper-Catalyzed Intramolecular N–S Bond Formation by Oxidative Dehydrogenative Cyclization
作者:Zhen Wang、Yoichiro Kuninobu、Motomu Kanai
DOI:10.1021/jo401056g
日期:2013.7.19
Copper-catalyzed synthesis of benzo[d]isothiazol-3(2H)-ones and N-acyl-benzothiazetidine by intramolecular dehydrogenative cyclization is described. In this reaction, a new nitrogen–sulfur (N–S) bond is formed by N–H/S–H coupling. The present reaction has high functional group tolerance and gives products in gram scale. This method promotes double cyclization, allowing for synthesis of a drug intermediate
描述了铜通过分子内脱氢环化反应合成苯并[ d ]异噻唑-3(2 H)-酮和N-酰基-苯并噻唑烷的方法。在该反应中,通过NH / S-H偶联形成一个新的氮-硫(NS)键。本反应具有较高的官能团耐受性,并得到以克为单位的产物。该方法促进了双环化,从而允许合成药物中间体。
HELLWINKEL, D.;LENZ, R.;LAEMMERZAHL, F., TETRAHEDRON, 1983, 39, N 12, 2073-2084
作者:HELLWINKEL, D.、LENZ, R.、LAEMMERZAHL, F.
DOI:——
日期:——
SMALL MOLECULE OXIDIZERS OF PDI AND THEIR USE
申请人:THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
公开号:US20180092908A1
公开(公告)日:2018-04-05
The present invention provides a method for treating or ameliorating the effects of a neurodegenerative disorder in a subject in need thereof. The method includes, for example, administering to the subject an effective amount of a compound selected from:
combinations thereof, or an N-oxide, crystalline form, hydrate thereof, or a pharmaceutically acceptable salt thereof. The present invention also provides a method for treating or ameliorating the effects of a condition associated with increased protein disulfide isomerase (PDI) activity and a method of modulating PDI activity in a cell. The present invention also provides compounds, salts, compositions and kits useful for the provided methods.