Aromatic allylaminonitro compounds corresponding to formula (I): ##STR1## in which R.sup.1 is hydrogen or an alkyl group containing 1 to 4 carbon atoms, R.sup.2 is hydrogen, an alkyl group containing 1 to 4 carbon atoms or an allyl group CH.sub.2 C(R.sup.5)=CH.sub.2, where R.sup.5 is hydrogen or an alkyl group containing 1 to 4 carbon atoms, R.sup.3 is carboxyl, hydroxy, nitro, halogen or a group NR.sup.6 R.sup.7, where R.sup.6 and R.sup.7 independently of one another represent hydrogen, an alkyl group containing 1 to 4 carbon atoms, a hydroxyalkyl or dihydroxyalkyl group containing 2 to 4 carbon atoms or an allyl group CH.sub.2 C(R.sup.8)=CH.sub.2, where R.sup.8 is hydrogen or an alkyl group containing 1 to 4 carbon atoms, and R.sup.4 is hydrogen or nitro, with the proviso that R.sup.3 and R.sup.4 are not both nitro. The compounds are useful for dyeing fibers, particularly human hair.
(DE) Gegenstand der Erfindung sind neue Allylaminonitroaromaten sowie deren Verwendung zum Färben von Fasern, insbesondere Keratinfasern. Ein weiterer Erfindungsgegenstand sind diese Allylaminonitroaromaten enthaltende Haarfärbemittel.(EN) Disclosed are new allylamino-nitroaromates, their use for dyeing fibres, in particular keratin fibres, and hair dyes containing these allylamino-nitroaromates.(FR) L'invention concerne de nouveaux allylamino-nitroaromates, leur utilisation pour teindre des fibres, notamment des fibres de kératine, et des teintures pour cheveux contenant des allylamino-nitroaromates.
3-Nitro-4-amino benzoic acids and 6-amino nicotinic acids are highly selective agonists of GPR109b
作者:Philip J. Skinner、Martin C. Cherrier、Peter J. Webb、Carleton R. Sage、Huong T. Dang、Cameron C. Pride、Ruoping Chen、Susan Y. Tamura、Jeremy G. Richman、Daniel T. Connolly、Graeme Semple
DOI:10.1016/j.bmcl.2007.09.058
日期:2007.12
A series of 3-nitro-4-substituted-aminobenzoic acids were prepared and found to act as potent and highly selective agonists of the orphan human GPCR GPR109b, a low affinity receptor for niacin. No activity was observed at the closely homologous high affinity niacin receptor, GPR109a. A second series, comprising 6-amino-substituted nicotinic acids was, also prepared and several analogues showed comparable activity to the nitroaryl series. (c) 2007 Elsevier Ltd. All rights reserved.