HIV-1 inhibitor-15 (compound 9d) is a potent and broad-spectrum inhibitor targeting HIV-1. It exhibits inhibitory activity against HIV-1 WT, L100I, K103N, Y181C, and E138K with respective EC50 values of 1.7 nM, 4 nM, 2 nM, 6 nM, and 9 nM. In addition to its high efficacy, HIV-1 inhibitor-15 possesses favorable solubility, safety profiles, and oral bioavailability [1].
OK-1035 is a potent and selective DNA-PK inhibitor. When a synthetic peptide was used as a substrate, OK-1035 caused 50% inhibition of DNA-PK activity at 8 microM. OK-1035 inhibited the phosphorylation by DNA-PK of consensus peptide as well as that of recombinant human wild type-p53. Kinetic studies indicated that OK-1035 inhibited DNA-PK activity in an ATP-competitive manner.
GKK1032B is a fungal metabolite that has antiproliferative and antibacterial activities. GKK1032B inhibits the growth of HeLa S3 cervical and MCF-7 breast cancer cells and Vero cells. It also inhibits the growth of B. subtilis and M. tuberculosis.