msx-2

MSX-2 is an A2A adenosine receptor antagonist.

MSX-3 is an antagonist of the A2A adenosine receptor and a prodrug of MSX-2.

(5E)-7-Oxozeaenol is a resorcylic acid lactone that has been found in the fungus MSX 63935 and has enzyme inhibitory and anticancer activities.1,2 It inhibits TGF-β-activated kinase 1 (TAK-1; IC50 = 1.3 μM).1 (5E)-7-Oxozeaenol inhibits proliferation of MCF-7, H460, SF-268, HT-29, and MDA-MB-435 human cancer cells with IC50 values of 4.9, 1.2, 5.6, 4.4, and 5.5 μM, respectively.2 |1. Fakhouri, L., El-Elimat, T., Hurst, D.P., et al. Isolation, semisynthesis, covalent docking and transforming growth factor beta-activated kinase 1 (TAK1)-inhibitory activities of (5Z)-7-oxozeaenol analogues. Bioorg. Med. Chem. 23(21), 6993-6999 (2015).|2. Ayers, S., Graf, T.N., Adcock, A.F., et al. Resorcylic acid lactones with cytotoxic and NF-κB inhibitory activities and their structure-activity relationships. J. Nat. Prod. 74(5), 1126-1131 (2011).

MSX-3 free acid is an A2A adenosine receptor antagonist and a prodrug of MSX-2.