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El-Damasy AK, Cho NC, Nam G, Pae AN, Keum G. Discovery of a Nanomolar Multikinase Inhibitor (KST016366): A New Benzothiazole Derivative with Remarkable Broad-Spectrum Antiproliferative Activity. ChemMedChem 2016; 11:1587-95. [PMID: 27405013 DOI: 10.1002/cmdc.201600224] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 05/25/2016] [Indexed: 01/07/2023]
Abstract
Herein we report the discovery of compound 6 [KST016366; 4-((2-(3-(4-((4-ethylpiperazin-1-yl)methyl)-3-(trifluoromethyl)phenyl)ureido)benzo[d]thiazol-6-yl)oxy)picolinamide] as a new potent multikinase inhibitor through minor structural modification of our previously reported RAF kinase inhibitor A. In vitro anticancer evaluation of 6 showed substantial broad-spectrum antiproliferative activity against 60 human cancer cell lines. In particular, it showed GI50 values of 51.4 and 19 nm against leukemia K-562 and colon carcinoma KM12 cell lines, respectively. Kinase screening of compound 6 revealed its nanomolar-level inhibitory activity of certain oncogenic kinases implicated in both tumorigenesis and angiogenesis. Interestingly, 6 displays IC50 values of 0.82, 3.81, and 53 nm toward Tie2, TrkA, and ABL-1 (wild-type and T315I mutant) kinases, respectively. Moreover, 6 is orally bioavailable with a favorable in vivo pharmacokinetic profile. Compound 6 may serve as a promising candidate for further development of potent anticancer chemotherapeutics.
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Affiliation(s)
- Ashraf Kareem El-Damasy
- Center for Neuro-Medicine, Brain Science Institute, Korea Institute of Science and Technology (KIST), Hwarangro 14-gil 5, Seongbuk-gu, Seoul, 136-791, Republic of Korea.,Department of Biological Chemistry, Korea University of Science and Technology (UST), Gajungro 217, Youseong-gu, Daejeon, 305-350, Republic of Korea.,Department of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, Mansoura, 35516, Egypt
| | - Nam-Chul Cho
- Center for Neuro-Medicine, Brain Science Institute, Korea Institute of Science and Technology (KIST), Hwarangro 14-gil 5, Seongbuk-gu, Seoul, 136-791, Republic of Korea
| | - Ghilsoo Nam
- Center for Neuro-Medicine, Brain Science Institute, Korea Institute of Science and Technology (KIST), Hwarangro 14-gil 5, Seongbuk-gu, Seoul, 136-791, Republic of Korea.,Department of Biological Chemistry, Korea University of Science and Technology (UST), Gajungro 217, Youseong-gu, Daejeon, 305-350, Republic of Korea
| | - Ae Nim Pae
- Center for Neuro-Medicine, Brain Science Institute, Korea Institute of Science and Technology (KIST), Hwarangro 14-gil 5, Seongbuk-gu, Seoul, 136-791, Republic of Korea.,Department of Biological Chemistry, Korea University of Science and Technology (UST), Gajungro 217, Youseong-gu, Daejeon, 305-350, Republic of Korea
| | - Gyochang Keum
- Center for Neuro-Medicine, Brain Science Institute, Korea Institute of Science and Technology (KIST), Hwarangro 14-gil 5, Seongbuk-gu, Seoul, 136-791, Republic of Korea. .,Department of Biological Chemistry, Korea University of Science and Technology (UST), Gajungro 217, Youseong-gu, Daejeon, 305-350, Republic of Korea.
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