Reactions between Weinreb Amides and 2-Magnesiated Oxazoles: A Simple and Efficient Preparation of 2-Acyl Oxazoles
作者:Daniel J. Pippel、Christopher M. Mapes、Neelakandha S. Mani
DOI:10.1021/jo070646a
日期:2007.7.1
Treatment of oxazole or 5-aryl oxazoles with i-PrMgCl smoothly generates the corresponding 2-Grignard reagents, which react with Weinreb amides to provide exclusively 2-acyl oxazole products.
Discovery of a Potent, Selective, and Efficacious Class of Reversible α-Ketoheterocycle Inhibitors of Fatty Acid Amide Hydrolase Effective as Analgesics
作者:Dale L. Boger、Hiroshi Miyauchi、Wu Du、Christophe Hardouin、Robert A. Fecik、Heng Cheng、Inkyu Hwang、Michael P. Hedrick、Donmienne Leung、Orlando Acevedo、Cristiano R. W. Guimarães、William L. Jorgensen、Benjamin F. Cravatt
DOI:10.1021/jm049614v
日期:2005.3.1
Herein we report the discovery of a potent, selective, and efficacious class of reversible FAAH inhibitors that produce analgesia in animal models validating a new therapeutic target for pain intervention. Key to the useful inhibitordiscovery was the routine implementation of a proteomics-wide selectivity screen against the serine hydrolase superfamily ensuring selectivity for FAAH coupled with systematic
Pd-Catalyzed Desulfonative Cross-Coupling of Benzylic Sulfone Derivatives with 1,3-Oxazoles
作者:Jacky C.-H. Yim、Masakazu Nambo、Cathleen M. Crudden
DOI:10.1021/acs.orglett.7b01510
日期:2017.7.21
The Pd-catalyzed desulfonative cross-coupling reaction of benzylic sulfone derivatives with 1,3-oxazoles via a deprotonative pathway has been developed. Broad substrate scope for both sulfone and 1,3-oxazole partners is observed, affording a variety of 1,3-oxazole-containing triarylmethanes. Sulfone partners that are primary benzylic, secondary benzylic, and benzhydryl are all effective. Using this
Pd/Cu-Catalyzed C–H/C–H Cross Coupling of (Hetero)Arenes with Azoles through Arylsulfonium Intermediates
作者:Ze-Yu Tian、Zeng-Hui Lin、Cheng-Pan Zhang
DOI:10.1021/acs.orglett.1c01322
日期:2021.6.4
A highly efficient method for the selective formal C–H/C–H cross-coupling of azoles and (hetero)arenes was established through arylsulfonium intermediates under transition-metal catalysis, which produced a variety of 2-(hetero)aryl azoles in good to excellent yields. Advantages of the reaction included mildness, a good functional group tolerance, a wide range of substrates, a high regio- and chemoselectivity
Improved competitive inhibitors of FAAH employ an α-keto heterocyclic pharmacophore and a binding subunit having a ?-unsaturation. The α-keto heterocyclic pharmacophore and a binding subunit are attached to one another, preferably by a hydrocarbon chain. The improvement lies in the use of a heterocyclic pharmacophore selected from oxazoles, oxadiazoles, thiazoles, and thiadiazoles that have alkyl or aryl substituents at their 4 and/or 5 positions. The improved competitive inhibitors of FAAH display enhanced activity over conventional competitive inhibitors of FAAH.