22877-01-6Relevant articles and documents
Hybrids of the benzofuran core from natural products and the 2,4-dihydroxy-5-isopropylbenzene fragment as potent Hsp90 inhibitors: Design, synthesis and bioevaluation
Jia, Jian-Min,Liu, Fang,Xu, Xiao-Li,Guo, Xiao-Ke,Jiang, Fen,Huang, Hao-Zhe,Pan, Yang,Cherfaoui, Bahidja,Sun, Hao-Peng,You, Qi-Dong
, p. 495 - 502 (2014)
Several chemical fragments have been confirmed as highly efficient cores for the design of Hsp90 inhibitors. Molecular hybridization of potent fragments has been widely used as a rational drug discovery strategy. In this study, a novel class of hybrids of benzofuran, a privileged core from natural products, and 2,4-dihydroxy-5-isopropyl phenyl, an efficient fragment in Hsp90 inhibitors, were designed and synthesized. Subsequent evaluation confirmed they inhibited cell proliferation and regulated the level of client proteins through Hsp90 inhibition. Some of the hybrids can serve as leads to obtain novel chemotypes of Hsp90 inhibitors. The methods reported here may expand the range of known structural types accommodated by the ATP binding site of Hsp90.
Ring-opening of five-membered heterocycles conjugated 4-isopropylresorcinol scaffold-based benzamides as HSP90 inhibitors suppressing tumor growth in vitro and in vivo
Liu, Yi-Min,Tu, Huang-Ju,Wu, Chueh-Heng,Lai, Mei-Jung,Yu, Shu-Chieh,Chao, Min-Wu,Wu, Yi-Wen,Teng, Che-Ming,Pan, Shiow-Lin,Liou, Jing-Ping
, (2021/05/10)
A series of ring-opened dihydroxybenzamides have been designed and synthesized as heat shock protein 90 inhibitors. One of derivatives, compound 6b ((N-ethyl-2,4-dihydroxy-5-isopropyl-N-(pyridin-3-yl)benzamide)) demonstrated remarkable antiproliferative activity against in human KRAS mutant A549 and EGFR T790 M mutant H1975 lung cancer cell lines with GI50 values of 0.07 and 0.05 μM, respectively. It is also active against in other cancer cell lines, such as colorectal HCT116 (GI50 = 0.09 μM), liver Hep3B (GI50 = 0.20 μM) and breast MDA-MB-231 (GI50 = 0.09 μM), and shows no evidence of toxicity in normal cell line. Compound 6b has an IC50 of 110.18 nM in HSP90α inhibitory activity, slightly better than reference compound 1 (17-AAG, IC50 = 141.62 nM) and achieves the degradation of multiple HSP90 client proteins in a dose- and time-dependent manner and downstream signaling of Akt in a concentration- and time-dependent manner in the human A549 lung cancer cell line. In the Boyden chamber assay, compound 6b can efficiently inhibit the migration of A549 cells when compared to the reference compound 1. It also induce significant activity through the apoptotic pathway. Treatment with 6b showed no vision toxicity (IC50 > 10 μM) on 661w photoreceptor cells as compared to AUY922 (3a) with a 0.04 μM values of IC50 and has no effect in hERG test. In a bidirectional Caco-2 permeability assay, compound 6b was classified as a highly permeable compound which is not a substrate of efflux transporters. In a pharmacokinetic study in rats, 6b showed an F = 17.8% of oral bioavailability. The effect of metabolic stability of compound 6b in human hepatocytes showed a T1/2 of 67.59 min. Compound 6b (50 mg/kg, po, daily) exhibits antitumor activity with a 72% TGD (tumor growth delay) in human A549 lung xenograft. The combination of 6b and afatinib, orally administered, showed tumor growth suppression with 67.5% of TGI in lung H1975 xenograft model. Thus compound 6b is a lead compound for further development of potential agents to treat lung cancer.
RESORCINOL DERIVATIVES FOR THEIR COSMETIC USE
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Page/Page column 20, (2019/04/26)
The invention relates to resorcinol-based compounds of formula (I), to the salts, solvates, optical and/or geometrical isomers thereof, to the use thereof as active agents for depigmenting, lightening and/ or bleaching keratin materials, and/or for preven
