Synthesis and biophysical evaluation of arylhydrazono-1H-2-indolinones as β-amyloid aggregation inhibitors
摘要:
A series of isatin-3-arylhydrazones were synthesized and evaluated in vitro as inhibitors of A beta(1-40) aggregation using a thioflavin T fluorescence method. An exploration of the effects on A beta(1-40) aggregation of a number of diverse substituents at phenylhydrazone group and 5,6- positions of the indolinone nucleus led us to single out some new anti-aggregating compounds with IC50 values in the low micromolar range. The most active compounds carry methoxy- or hydroxy- substituents in the indolinone 5,6-positions and lipophilic groups such as iPr and Cl at 4'- and 3'-position, respectively, of the phenylhydrazone moiety. Two derivatives are noteworthy, namely 18 (IC50 = 0.4 mu M) and 42 (IC50 = 1.1 mu M). The in vitro effects of the highly active, water soluble, compound 42 on the temporal evolution of A beta(1-40) fibrils formation were further investigated by circular dichroism spectroscopy, transmission electron microscopy and dynamic light scattering studies, which clearly showed that this compound delayed and lowered the amyloid fibril formation. (C) 2010 Elsevier Masson SAS. All rights reserved.
Invented are non-peptide TPO mimetics. Also invented are novel processes and intermediates used in the preparation of the presently invented compounds. Also invented is a method of treating thrombocytopenia, in a mammal, including a human, in need thereof which comprises administering to such mammal an effective amount of a selected hydroxy-
1
-azobenzene derivative.
Asymmetric Synthesis of Tetracyclic Pyrroloindolines and Constrained Tryptamines by a Switchable Cascade Reaction
作者:Corien de Graaff、Lisa Bensch、Sjoerd J. Boersma、Răzvan C. Cioc、Matthijs J. van Lint、Elwin Janssen、Nicholas J. Turner、Romano V. A. Orru、Eelco Ruijter
DOI:10.1002/anie.201507041
日期:2015.11.16
The interrupted Fischer indole synthesis of arylhydrazines and biocatalytically generated chiral bicyclic imines selectively affords either tetracyclicpyrroloindolines or tricyclic tryptamine analogues depending on the reaction conditions. We demonstrate that the reaction is compatible with a variety of functional groups. The products are obtained in high optical purity and in reasonable to good yield
Provided herein are compounds of the formula (I):
as well as pharmaceutically acceptable salts thereof, wherein the substituents are as those disclosed in the specification. These compounds, and the pharmaceutical compositions containing them, are useful for the treatment of diseases such as, for example, obesity, type II diabetes mellitus and metabolic syndrome.
Invented are non-peptide TPO mimetics. Also invented are novel processes and intermediates used in the preparation of the presently invented compounds. Also invented is a method of treating thrombocytopenia, in a mammal, including a human, in need thereof which comprises administering to such mammal an effective amount of a selected hydroxy-1-azobenzene derivative.
[EN] DIACYLGLYCEROL ACYLTRANSFERASE INHIBITORS<br/>[FR] INHIBITEURS DE LA DIACYLGLYCÉROL ACYLTRANSFÉRASE
申请人:HOFFMANN LA ROCHE
公开号:WO2009037222A1
公开(公告)日:2009-03-26
Provided herein are compounds of the formula (I), as well as pharmaceutically acceptable salts thereof, wherein the substituents are as those disclosed in the specification. These compounds, and the pharmaceutical compositions containing them, are useful for the treatment of diseases such as, for example, obesity, type II diabetes mellitus and metabolic syndrome.