Optimization of Chloronitrobenzamides (CNBs) as Therapeutic Leads for Human African Trypanosomiasis (HAT)
摘要:
We previously reported the discovery of the activity of chloronitrobenzamides (CNBs) against bloodstream forms of Trypanosoma brucei. Herein we disclose extensive structure activity relationship and structure property relationship studies aimed at identification of tractable early leads for clinical development. These studies revealed a promising lead compound, 17b, that exhibited nanomolar potency against T. brucei (EC50 = 27 nM for T. b. brucei, 7 nM for T. b. rhodesiense, and 2 nM for T. b. gambiense) with excellent selectivity for parasite cells relative to mammalian cell lines (EC50 > 25 mu M). In addition compound 17b displayed suitable physiochemical characteristics and microsomal stability (t(1/2) > 4 h for human and mouse) to justify pursuing in vivo studies.
A compound of the following formula or a pharmacologically acceptable salt thereof:
1
wherein A represents a phenyl group or the like, B represents an aryl group or the like, X represents an oxygen atom or the like, and n represents 0 or 1. The compound is a PPAR &ggr; modulator which is a therapeutic agent for retrograde osteoporosis in which excessive differentiation of adipocytes is inhibited and formation and differentiation of osteoblasts from stem cells is facilitated, and for diabetes mellitus without characteristics such as excessive adipogenesis, liver dysfunction, vascular disorders, heart diseases and the like.
[Subject]
The present invention has a purpose for providing a PPAR γ modulator which can be a therapeutic agent for retrograde osteoporosis in which excessive differentiation of adipocytes was inhibited and formation and differentiation of osteoblasts from stem cells is facilitated or that for diabetes mellitus without characteristics such as excessive adipogenesis, liver dysfunction, vascular disorders, heart diseases and the like.
[Solution]
A compound of the following formula or a pharmacologically acceptable salt thereof:
wherein A represents a phenyl group or the like, B represents an aryl group or the like, X represents an oxygen atom or the like, and n represents 0 or 1.
Optimization of Chloronitrobenzamides (CNBs) as Therapeutic Leads for Human African Trypanosomiasis (HAT)
作者:Jong Yeon Hwang、David Smithson、Fangyi Zhu、Gloria Holbrook、Michele C. Connelly、Marcel Kaiser、Reto Brun、R. Kiplin Guy
DOI:10.1021/jm301687p
日期:2013.4.11
We previously reported the discovery of the activity of chloronitrobenzamides (CNBs) against bloodstream forms of Trypanosoma brucei. Herein we disclose extensive structure activity relationship and structure property relationship studies aimed at identification of tractable early leads for clinical development. These studies revealed a promising lead compound, 17b, that exhibited nanomolar potency against T. brucei (EC50 = 27 nM for T. b. brucei, 7 nM for T. b. rhodesiense, and 2 nM for T. b. gambiense) with excellent selectivity for parasite cells relative to mammalian cell lines (EC50 > 25 mu M). In addition compound 17b displayed suitable physiochemical characteristics and microsomal stability (t(1/2) > 4 h for human and mouse) to justify pursuing in vivo studies.