New Synthetic Routes to Triazolo-benzodiazepine Analogues: Expanding the Scope of the Bump-and-Hole Approach for Selective Bromo and Extra-Terminal (BET) Bromodomain Inhibition

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• 作者：Matthias G. J. Baud ; Enrique Lin-Shiao ; Michael Zengerle ; Cynthia Tallant ; Alessio Ciulli
• 刊名：Journal of Medicinal Chemistry
• 出版年：2016
• 出版时间：February 25, 2016
• 年：2016
• 卷：59
• 期：4
• 页码：1492-1500
• 全文大小：530K
• ISSN：1520-4804

文摘

We describe new synthetic routes developed toward a range of substituted analogues of bromo and extra-terminal (BET) bromodomain inhibitors I-BET762/JQ1 based on the triazolo-benzodiazepine scaffold. These new routes allow for the derivatization of the methoxyphenyl and chlorophenyl rings, in addition to the diazepine ternary center and the side chain methylene moiety. Substitution at the level of the side chain methylene afforded compounds targeting specifically and potently engineered BET bromodomains designed as part of a bump and hole approach. We further demonstrate that marked selectivity for the second over the first bromodomain can be achieved with an indole derivative that exploits differential interaction with an aspartate/histidine conservative substitution on the BC loop of BET bromodomains.