| Literature DB >> 32071675 |
Tyler A Johnson1,2, Joseph D Morris1, David A Coppage2, Colon V Cook1, Lauren N Persi1, Marcos A Ogarrio1, Taylor C Garcia1, Nicole L McIntosh1, Erin P McCauley2, Joseph Media3, Mani Maheshwari3, Frederick A Valeriote3, Jiajiu Shaw4, Phillip Crews2.
Abstract
Reinvestigation of mycothiazole (1) revealed picomolar potency (IC50 = 0.00016, 0.00027, 0.00035 μM) against pancreatic, (PANC-1), liver (HepG2), and colon (HCT-116) tumor cell lines. Reevaluation of 1 provided [α]D data indicating Vanuatu specimens of C. mycofijiensis contain the 8S enantiomer of 1 and not the 8R configuration previously reported. Semisynthesis provided 8-O-acetylmycothiazole (2), 8-oxomycothiazole (8), mycothiazole nitrosobenzene derivatives (MND1, MND2: 9a, 9b), and MND3 (10) with IC50 = 0.00129, >1.0, >1.0, >1.0, >1.0 μM, respectively, against PANC-1 cell lines. These results highlight the significance of the penta-2,4-dien-1-ol residue as a key structural feature of 1 required for its cytotoxicty against tumor cell lines.Entities:
Year: 2020 PMID: 32071675 PMCID: PMC7025380 DOI: 10.1021/acsmedchemlett.9b00302
Source DB: PubMed Journal: ACS Med Chem Lett ISSN: 1948-5875 Impact factor: 4.345