The process starts by reacting 2,3,5 trimethylpyridine with hydrogen peroxide in the presence of catalysts, giving new reactive ionic species allowing the number of required steps to be substantially reduced. In the final important step, oxidation to omeprazol, there are used new salts of 5-methoxy-2-((3,5-dimethyl-4-methoxy-2-pyridine)methylthio)-1H-benzimidazole which, as the oxidation evolves, precipitate the omeprazol. The new oxidation method avoids superoxidations, provide for faster oxidation, high purity and yields of over 90%.
The invention relates to compounds of formula 1
and formula 10
and to compositions comprising these compounds and methods of treating gastrointestinal disorders by administering these compounds.
Provided are novel compounds of Formula (I): pharmaceutically acceptable salts thereof, and pharmaceutical composition thereof, which are useful as dual Hsp90/TRAP1 inhibitors. Also provided are pharmaceutical compositions comprising the novel compounds of Formula (I) and their use in treating one or more cancers.
Discovery of 5-substituted 2-amino-4-chloro-8-((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)-7,8-dihydropteridin-6(5H)-ones as potent and selective Hsp90 inhibitors
作者:Xiaoyuan Li、Ellyn Shocron、Aimin Song、Neela Patel、Connie L. Sun
DOI:10.1016/j.bmcl.2009.03.074
日期:2009.5
A new series of compounds, 5-substituted 2-amino-4-chloro-8-((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)-7,8-dihydropteridin-6(5H)-ones, have been designed and identified as potent and selective inhibitors of Hsp90. These compounds demonstrated nanomolar potency toward both Hsp90-regulated Her2 degradation and the growth of a panel of human tumor cell lines in cell-based assays. High selectivity of these compounds toward Hsp90 was evident given that they did not inhibit a panel of 34 kinases at 10 mu M. The structure-activity relationship (SAR) of this series is reported here. (C) 2009 Published by Elsevier Ltd.