Design, synthesis and insight into the structure–activity relationship of 1,3-disubstituted indazoles as novel HIF-1 inhibitors
摘要:
Design, synthesis and insight into the structure-activity relationship (SAR) of 1,3-disubstituted indazoles as novel HIF-1 inhibitors are described. In particular, the substituted furan moiety on indazole skeleton as well as its substitution pattern turns out crucial for the high HIF-1 inhibition. (C) 2011 Elsevier Ltd. All rights reserved.
Compounds of formula (1), and pharmaceutically acceptable salts thereof, are capable of blockading voltage-dependent sodium channels and are useful in particular, in treating glaucoma and multiple sclerosis.
A fused pyrazolyl compound of the following formula:
wherein A, Ar1, Ar2, R1, R2, R3, and R4, are as defined herein. Also disclosed is a pharmaceutical composition containing an effective amount of the above-described fused pyrazolyl compound.
As human beings live longer, age-related diseases such as osteoporosis will become more prevalent. Intolerant side effects and poor responses to current treatments are observed. Therefore, novel effective therapeutic agents are greatly needed. Here, pyrazole derivatives were designed and synthesized, and their osteoclastogenesis inhibitory effects both in vitro and in vivo were evaluated. The most promising compound 13 with a 2-(dimethylamino)ethyl group inhibited markedly in vitro osteoclastogenesis as well as the bone resorption activity of osteoclasts. Compound 13 affected osteoclast's early proliferation and differentiation more than later fusion and maturation stages. In ovariectomized (OVX) mice, compound 13 can inhibit the loss of trabecular bone volume, trabecular bone number, and trabecular thickness. Moreover, compound 13 can antagonize OVX-induced reduction of serum bone resorption marker and then compensatory increase of the bone formation marker. To sum up, compound 13 has high potential to be developed into a novel therapeutic agent for treating osteoporosis in the future.