Someone posted this someplace else, but I thought some of you might be interested in this:
Rational design and synthesis of 4-((1R,2R)-2-hydroxycyclohexyl)-2(trifluoromethyl)benzonitrile (PF-998425), a novel, nonsteroidal androgen receptor antagonist devoid of phototoxicity for dermatological indications.J Med Chem. 2008 Nov 13;51(21):7010-4. Epub 2008 Oct 16.
Li JJ, Iula DM, Nguyen MN, Hu LY, Dettling D, Johnson TR, Du DY, Shanmugasundaram V, Van Camp JA, Wang Z, Harter WG, Yue WS, Boys ML, Wade KJ, Drummond EM, Samas BM, Lefker BA, Hoge GS, Lovdahl MJ, Asbill J, Carroll M, Meade MA, Ciotti SM, Krieger-Burke T.
Department of Chemistry, Michigan Laboratories, Pfizer Global Research & Development, 2800 Plymouth Road, Ann Arbor, Michigan 48105, USA.
4-((1 R,2 R)-2-Hydroxycyclohexyl)-2(trifluoromethyl)benzonitrile [PF-0998425, (-)- 6a] is a novel, nonsteroidal androgen receptor antagonist for sebum control and treatment of androgenetic alopecia. It is potent, selective, and active in vivo. The compound is rapidly metabolized systemically, thereby reducing the risk of unwanted systemic side effects due to its primary pharmacology. (-)- 6a was tested negative in the 3T3 NRU assay, validating our rationale that reduction of conjugation might reduce potential phototoxicity.