Synthesis and evaluation of 5,5-diphenylimidazolones as potent human neuropeptide Y5 receptor antagonists
摘要:
A series of novel 5,5-diphenylimidazolones was synthesized and evaluated for activity against the human neuropeptide Y5 receptor. The 3-pyridyl analog 46 demonstrated an IC50 of 8.3 nM with a favorable pharmacokinetic profile in rats, but was ineffective in reducing food intake. (c) 2006 Elsevier Ltd. All rights reserved.
Selective hydroformylation-hydrogenation tandem reaction of isoprene to 3-methylpentanal
作者:Arno Behr、Sebastian Reyer、Nils Tenhumberg
DOI:10.1039/c1dt11292a
日期:——
The hydroformylation of isoprene catalysed by rhodium phosphine complexes usually yields a broad mixture of the monoaldehydes, the isomeric methylpentenals, as well as the dialdehyde 3-methyl-1,6-hexandial. Under usual reaction conditions the products of a consecutive hydrogenation are only formed as minor by-products. Surprisingly we discovered now a selective auto-tandem reaction consisting of a