Synthesis of fused imidazole rings by sequential van Leusen/C–H bond activation
摘要:
A concise route to access fused imidazole rings employing the van Leusen three-component reaction followed by a Pd/Cu catalyzed intramolecular Garylation is reported. The reaction was found to be general and the products were formed in moderate to excellent yields using the two-step reaction sequence. (c) 2006 Elsevier Ltd. All rights reserved.
Exploring the reactivity of 1,5-disubstituted sulfonyl-triazoles: thermolysis and Rh(II)-catalyzed synthesis of α-sulfonyl nitriles
作者:Maria Elena Meza-Aviña、Mudita Kishor Patel、Mitchell P. Croatt
DOI:10.1016/j.tet.2013.05.048
日期:2013.9
Rh(II)-catalyst coordinates strongly but reversibly with the 1,5-disubstituted sulfonyl-triazoles. Other catalysts, including both Brønsted and Lewis acids, were found to catalyze this transformation, although less efficiently compared to neat thermolysis or Rh(II)-catalyzed conditions. These data illustrate both the unique nature of 1,5-disubstituted sulfonyl-triazoles and potential future avenues for their
Enantioselective Organocatalytic Approach to the Synthesis of α,α-Disubstituted Cyanosulfones
作者:M. Belén Cid、Jesús López-Cantarero、Sara Duce、José Luis García Ruano
DOI:10.1021/jo801968p
日期:2009.1.2
sulfones have been obtained by organocatalytic enantioselectiveMichaeladdition of α-substituted cyanosulfones to vinyl ketones using cinchonaalkaloids as catalysts. The best results were obtained for p-trifluorophenylsulfones by using VIII as catalyst in toluene at −40 °C. Reactions proved to be applicable for a variety of α,β-unsaturatedketones, affording α,α-disubstituted cyanosulfones in excellent
Compounds, compositions and methods that are useful in the treatment of inflammatory, immunoregulatory, metabolic, infectious and cell proliferative diseases or conditions are provided herein. In particular, the invention provides compounds which modulate the expression and/or function of proteins involved in inflammation, metabolism, infection and cell proliferation. The subject compounds contain a fused heterobicyclic ring.
The invention provides a compound of formula I:
or a salt thereof, wherein R
1
, R
2
, R
3
, A, B, D, E, F and G have any of the values described in the specification, as well as compositions comprising a compound of formula I. The compounds are useful as bromodomain inhibitors.
Substituted Heterocycles as Therapeutic agents for treating cancer
申请人:Doemling Alexander
公开号:US20110313167A1
公开(公告)日:2011-12-22
MDM2 and MDM4 proteins prevent apoptosis of cancer cells by negatively regulating the transcription factor p53. Compounds according to Formula I
are selective antagonists of MDM2 and MDM4 proteins, disrupting the p53/MDM2 and p53/MDM4 complex. These compounds therefore are candidate therapeutics for treating cancer as well as other cell proliferative disease states.