Development of hypoxia-inducible factor (HIF)-1α inhibitors: Effect of ortho-carborane substituents on HIF transcriptional activity under hypoxia
摘要:
A series of substituted ortho-carboranylphenoxyacetanilides were synthesized and evaluated for their ability to inhibit hypoxia-induced HIF-1 transcriptional activity using a cell-based reporter assay in HeLa cells expressing the HRE-dependent firefly luciferase reporter construct (HRE-Luc) and constitutively expressing CMV-driven Renilla luciferase reporter, and their ability to inhibit cell growth (GI(50)) using the MTT assay. Among the compounds synthesized, 1g and 1l showed significant inhibition of hypoxia-induced HIF-1 transcriptional activity (IC50: 1.9 +/- 0.4 and 1.4 +/- 0.2 mu M, respectively). Both compounds suppressed HIF-1 alpha accumulation in a concentration-dependent manner. The porcine heart malate dehydrogenase (MDH) refolding assay revealed that compound 1l inhibited human Hsp60 chaperone activity (IC50: 6.80 +/- 0.25 mu M) and this inhibition activity was higher than that of ETB (IC50: 10.9 +/- 0.63 mu M). (c) 2012 Elsevier Ltd. All rights reserved.
Development of hypoxia-inducible factor (HIF)-1α inhibitors: Effect of ortho-carborane substituents on HIF transcriptional activity under hypoxia
摘要:
A series of substituted ortho-carboranylphenoxyacetanilides were synthesized and evaluated for their ability to inhibit hypoxia-induced HIF-1 transcriptional activity using a cell-based reporter assay in HeLa cells expressing the HRE-dependent firefly luciferase reporter construct (HRE-Luc) and constitutively expressing CMV-driven Renilla luciferase reporter, and their ability to inhibit cell growth (GI(50)) using the MTT assay. Among the compounds synthesized, 1g and 1l showed significant inhibition of hypoxia-induced HIF-1 transcriptional activity (IC50: 1.9 +/- 0.4 and 1.4 +/- 0.2 mu M, respectively). Both compounds suppressed HIF-1 alpha accumulation in a concentration-dependent manner. The porcine heart malate dehydrogenase (MDH) refolding assay revealed that compound 1l inhibited human Hsp60 chaperone activity (IC50: 6.80 +/- 0.25 mu M) and this inhibition activity was higher than that of ETB (IC50: 10.9 +/- 0.63 mu M). (c) 2012 Elsevier Ltd. All rights reserved.
Photoarylation of Iodocarboranes with Unactivated (Hetero)Arenes: Facile Synthesis of 1,2‐[(Hetero)Aryl]
<sub>
<i>n</i>
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‐
<i>o</i>
‐Carboranes (
<i>n</i>
=1,2) and
<i>o</i>
‐Carborane‐Fused Cyclics
作者:Hangcheng Ni、Zaozao Qiu、Zuowei Xie
DOI:10.1002/anie.201610810
日期:2017.1.16
Photoarylation of iodocarboranes with unactivated arenes/heteroarenes at room temperature has been achieved, for the first time, thus leading to the facile synthesis of a large variety of cage carbon mono(hetero)arylated and di(hetero)arylated o‐carboranes. This work represents a clean, efficient, transition‐metal‐free, and cheap synthesis of functionalized carboranes, which has significant advantages over