Design, synthesis, and evaluation of biphenyl-4-yl-acrylohydroxamic acid derivatives as histone deacetylase (HDAC) inhibitors
摘要:
A series of hydroxamic acid-based histone deacetylase (HDAC) inhibitors were designed on the basis of a model of the HDAC2 binding site and synthesized. They are characterized by a cinnamic spacer, capped with a substituted phenyl group. Modifications of the spacer are also reported. In an in vitro assay with the isoenzyme HDAC2, a good correlation of the activity with the docking energy was found. In human ovarian carcinoma IGROV-1 cells, selected compounds produced significant acetylation of p53 and alpha-tubulin. Most compounds showed an antiproliferative activity comparable to that of SAHA. At equitoxic concentrations, the tested compounds were more effective than SAHA in inducing apoptotic cell death. Compounds selected for in vivo evaluation exhibited a significant antitumor activity on three tumor models at well tolerated doses, thus suggesting a good therapeutic index. (C) 2008 Elsevier Masson SAS. All rights reserved.
A series of hydroxamic acid-based histone deacetylase (HDAC) inhibitors were designed on the basis of a model of the HDAC2 binding site and synthesized. They are characterized by a cinnamic spacer, capped with a substituted phenyl group. Modifications of the spacer are also reported. In an in vitro assay with the isoenzyme HDAC2, a good correlation of the activity with the docking energy was found. In human ovarian carcinoma IGROV-1 cells, selected compounds produced significant acetylation of p53 and alpha-tubulin. Most compounds showed an antiproliferative activity comparable to that of SAHA. At equitoxic concentrations, the tested compounds were more effective than SAHA in inducing apoptotic cell death. Compounds selected for in vivo evaluation exhibited a significant antitumor activity on three tumor models at well tolerated doses, thus suggesting a good therapeutic index. (C) 2008 Elsevier Masson SAS. All rights reserved.
Rhodium‐Catalyzed Anti‐Markovnikov Transfer Hydroiodination of Terminal Alkynes**
作者:Philip Boehm、Niklas Kehl、Bill Morandi
DOI:10.1002/anie.202214071
日期:2023.1.23
We report a shuttle approach for the Rh-catalyzed anti-Markovnikov hydroiodination of terminalalkynes to vinyl iodides. For aliphatic alkynes, a ligand- and substrate-dependent stereodivergence is observable. The vinyl iodides are engaged in a variety of C−C and C−X bond-forming reactions. The method is used to shorten a synthetic sequence to a cis-fatty acid. Deuterium-labeling and stoichiometric