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Updated: May 1, 2026

Assays for Validating Histone Acetyltransferase Inhibitors
Published on: August 6, 2020
Synthesis of 2-Aryl(alkyl)benzimidazole Hydroxamic Acids as HDAC Inhibitors with Anti-Angiogenesis Properties
Yi-Ting Liu1, Cheng-Ta Lai2,3, Shih-Wei Wang4,5
1School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei City, Taiwan.
Abstract:
This study synthesized a series of C2 and N1-substituted benzimidazole hydroxamic acid (6-19) as HDAC inhibitors. Among them, most of 2-aryl(alkyl)benzimidazole hydroxamic acids (11-16) exhibited HDAC6 activity and slight HDAC1 (or HDAC2) activity. In addition, they also showed anti-angiogenic activity and inhibited the growth of tested cancer cells. For instance, compound 13 has a GI50 of 3.9 μM against EPCs and inhibited the growth of HCT-116, SK-Hep-1, and PC-3 cells with GI50 values of 1.3, 4.2, and 7.5 μM, respectively. The exact mechanism underlying the anti-angiogenic effects of these compounds remains unknown, though this study gives an insight into how future HDAC inhibitors that aim to target blood vessel formation can be designed.
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