Download MendeleyMulti-substituted 8-aminoimidazo[1,2-a]pyrazines by Groebke-Blackburn-Bienayme reaction and their Hsp90 inhibitory activity.
Ren, J., Yang, M., Liu, H., Cao, D., Chen, D., Li, J., Tang, L., He, J., Chen, Y.L., Geng, M., Xiong, B., Shen, J.(2015) Org Biomol Chem 13: 1531-1535
- PubMed: 25490978
- DOI: https://doi.org/10.1039/c4ob01865f
- Primary Citation of Related Structures:
4R3M - PubMed Abstract:
Using a 2,3-diamino pyrazine substrate and yttrium triflate catalyst, various 2-alkyl and aryl substituted 3,8-diaminoimidazo[1,2-a]pyrazines were efficiently prepared through Groebke-Blackburn-Bienaymé MCR. In particular, a novel 2-piperonyl 3,8-diaminoimidazo[1,2-a]pyrazine structure was prepared exclusively with this new method and was found to have moderate Hsp90 inhibitory activity. A crystalline complex with N-terminus ATP domain of Hsp90 and one of the new Hsp90 inhibitors was also obtained to elucidate the origin of activity of 2-piperonyl 3,8-diaminoimidazo[1,2-a]pyrazines.
Organizational Affiliation:
Medicinal Chemistry Department, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China. bxiong@simm.ac.cn.
