[EN] BIS-PYRIDYLPYRIDONES AS MELANIN-CONCENTRATING HORMONE RECEPTOR 1 ANTAGONISTS<br/>[FR] BIS-PYRIDYLPYRIDONES EN TANT QU'ANTAGONISTES DU RÉCEPTEUR DE L'HORMONE DE MÉLANO-CONCENTRATION
申请人:GLAXOSMITHKLINE LLC
公开号:WO2010141540A1
公开(公告)日:2010-12-09
The invention provides novel bis-pyridylpyridones which are antagonists at the melanin-concentrating hormone receptor 1 (MCHR1 ), pharmaceutical compositions containing them, processes for their preparation, and their use in therapy and for the treatment of obesity and diabetes.
A tandem Diels–Alder/Mannich approach to the synthesis of AE and ABE ring analogues of Delphinium alkaloids
作者:Kirsten J. Goodall、Margaret A. Brimble、David Barker
DOI:10.1016/j.tet.2012.05.037
日期:2012.7
The one-pot TiCl4 catalysed Diels–Alder/Mannich reaction of α-cyanoaminoacrylates with 2-silyloxy-1,4-butadienes gives 6-keto-3-azabicyclo[3.3.1]nonane-1-carboxylates. Reduction of the ketone and alkylation of the resultant alcohol gives 6-alkoxy-3-azabicyclo[3.3.1]nonanes mimicking the AE rings of a number of Delphinium and Aconitum alkaloids, with the same stereochemistry as the natural products
BIS-PYRIDYLPYRIDONES AS MELANIN-CONCENTRATING HORMONE RECEPTOR 1 ANTAGONISTS
申请人:Christensen IV Siegfried Benjamin
公开号:US20120077795A1
公开(公告)日:2012-03-29
The invention provides novel bis-pyridylpyridones which are antagonists at the melanin-concentrating hormone receptor 1 (MCHR1), pharmaceutical compositions containing them, processes for their preparation, and their use in therapy and for the treatment of obesity and diabetes.
Chiral N-hydroxybenzamides (1H-3H) have been synthesized as precursors of chiral short-lived N-oxyl radicals 1(center dot)-3(center dot). The latter species have been generated by oxidation of 1H-3H with Pb(OAc)(4) or hydrogen abstraction from 1H-3H by the tert-butoxyl radical and characterized by UV-vis spectrophotometry and EPR spectroscopy. Through a kinetic study of the hydrogen atom transfer processes promoted by 1(center dot)-3(center dot) from three chiral benzylic substrates (1-phenylethylamine, 1-phenylethanol, and a-vinylbenzyl alcohol), a moderate chiral discrimination has been found, with selectivity factors 0.5 <= k(H)(S)/k(H)(R) <= 2.