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Bioorg Med Chem. 2011 Jul 15;19(14):4192-201. doi: 10.1016/j.bmc.2011.05.064. Epub 2011 Jun 21.

The discovery of long-acting saligenin β₂ adrenergic receptor agonists incorporating hydantoin or uracil rings.

Author information

1
Department of Medicinal Chemistry, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, United Kingdom. pan.a.procopiou@gsk.com

Abstract

A series of novel, potent and selective human β(2) adrenoceptor agonists incorporating a hydantoin or a uracil ring on the right-hand side phenyl ring of (R)-salmeterol is presented. Hydantoin 12a had long duration of action in vitro on guinea pig trachea, and 12h in guinea pigs in vivo at its EC(90) 25 μM. It had lower oral absorption than salmeterol in rats, and lower bioavailability than salmeterol in vivo in both rats and dogs (2% and 5%, respectively). An improved method for measuring the absorbed fraction of analogues dosed to rats, which considers the glucuronidated fraction is presented. Compound 12a was metabolised in human liver microsomes and hepatocytes to the active hydantoic acid 12m.

PMID:
21696967
DOI:
10.1016/j.bmc.2011.05.064
[Indexed for MEDLINE]

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