A Practical Synthesis of 5-Lipoxygenase Inhibitor MK-0633
摘要:
Practical, chromatography-free syntheses of 5-lipoxygenase inhibitor MK-0633 p-toluenesullonate (1) are described. The first route used an asymmetric zincate addition to ethyl 2,2,2-trifluoropyruvate followed by 1,3,4-oxadiazole formation and reductive amination as key steps. An improved second route features an inexpensive diastereomeric salt resolution of vinyl hydroxy-acid 22 followed by a robust end-game featuring a through-process hydrazide acylation/1,3,4-oxadiazole ring closure/salt formation sequence to afford MK-0633 p-toluenesulfonate (1).
The Discovery of Setileuton, a Potent and Selective 5-Lipoxygenase Inhibitor
作者:Yves Ducharme、Marc Blouin、Christine Brideau、Anne Châteauneuf、Yves Gareau、Erich L. Grimm、Hélène Juteau、Sébastien Laliberté、Bruce MacKay、Frédéric Massé、Marc Ouellet、Myriam Salem、Angela Styhler、Richard W. Friesen
DOI:10.1021/ml100029k
日期:2010.7.8
The discovery of novel and selectiveinhibitors of human 5-lipoxygenase (5-LO) is described. These compounds are potent, orally bioavailable, and active at inhibiting leukotriene biosynthesis in vivo in a dog PK/PD model. A major focus of the optimization process was to reduce affinity for the human ether-a-go-go gene potassium channel while preserving inhibitory potency on 5-LO. These efforts led
A Practical Synthesis of 5-Lipoxygenase Inhibitor MK-0633
作者:Francis Gosselin、Robert A. Britton、Ian W. Davies、Sarah J. Dolman、Danny Gauvreau、R. Scott Hoerrner、Gregory Hughes、Jacob Janey、Stephen Lau、Carmela Molinaro、Christian Nadeau、Paul D. O’Shea、Michael Palucki、Rick Sidler
DOI:10.1021/jo100561u
日期:2010.6.18
Practical, chromatography-free syntheses of 5-lipoxygenase inhibitor MK-0633 p-toluenesullonate (1) are described. The first route used an asymmetric zincate addition to ethyl 2,2,2-trifluoropyruvate followed by 1,3,4-oxadiazole formation and reductive amination as key steps. An improved second route features an inexpensive diastereomeric salt resolution of vinyl hydroxy-acid 22 followed by a robust end-game featuring a through-process hydrazide acylation/1,3,4-oxadiazole ring closure/salt formation sequence to afford MK-0633 p-toluenesulfonate (1).