Structure−Activity Relationships of α-Ketooxazole Inhibitors of Fatty Acid Amide Hydrolase
摘要:
A systematic study of the structure-activity relationships of 2b (OL-135), a potent inhibitor of fatty acid amide hydrolase (FAAH), is detailed targeting the C2 acyl side chain. A series of aryl replacements or substituents for the terminal phenyl group provided effective inhibitors (e.g., 5c, aryl = 1- napthyl, K-i = 2.6 nM), with 5hh (aryl = 3-ClPh, K-i = 900 pM) being 5-fold more potent than 2b. Conformationally restricted C2 side chains were examined, and many provided exceptionally potent inhibitors, of which 11j (ethylbiphenyl side chain) was established to be a 750 pM inhibitor. A systematic series of heteroatoms (O, NMe, S), electron-withdrawing groups (SO, SO2), and amides positioned within and hydroxyl substitutions on the linking side chain were investigated, which typically led to a loss in potency. The most tolerant positions provided effective inhibitors (12p, 6-position S, K-i = 3 nM, or 13d, 2-position OH, K-i = 8 nM) comparable in potency to 2b. Proteome-wide screening of selected inhibitors from the systematic series of > 100 candidates prepared revealed that they are selective for FAAH over all other mammalian serine proteases.
Structure−Activity Relationships of α-Ketooxazole Inhibitors of Fatty Acid Amide Hydrolase
摘要:
A systematic study of the structure-activity relationships of 2b (OL-135), a potent inhibitor of fatty acid amide hydrolase (FAAH), is detailed targeting the C2 acyl side chain. A series of aryl replacements or substituents for the terminal phenyl group provided effective inhibitors (e.g., 5c, aryl = 1- napthyl, K-i = 2.6 nM), with 5hh (aryl = 3-ClPh, K-i = 900 pM) being 5-fold more potent than 2b. Conformationally restricted C2 side chains were examined, and many provided exceptionally potent inhibitors, of which 11j (ethylbiphenyl side chain) was established to be a 750 pM inhibitor. A systematic series of heteroatoms (O, NMe, S), electron-withdrawing groups (SO, SO2), and amides positioned within and hydroxyl substitutions on the linking side chain were investigated, which typically led to a loss in potency. The most tolerant positions provided effective inhibitors (12p, 6-position S, K-i = 3 nM, or 13d, 2-position OH, K-i = 8 nM) comparable in potency to 2b. Proteome-wide screening of selected inhibitors from the systematic series of > 100 candidates prepared revealed that they are selective for FAAH over all other mammalian serine proteases.
A Highly Efficient and Recyclable Pd(Pph<sub>3</sub>)<sub>4</sub>/Peg-400 System for Stille Cross-Coupling Reactions of Organostannanes with Aryl Bromides
作者:Xue Huang、Fang Yao、Ting Wei、Mingzhong Cai
DOI:10.3184/174751917x15045169836226
日期:2017.9
Pd(PPh3)4 in PEG-400 is shown to be a highly efficient catalyst for the Stille cross-coupling reactions of various organotin compounds with arylbromides. The reaction could be conducted at 80 °C using NaOAc as base, yielding a variety of biaryls, alkynes and alkenes in good to excellent yields. The isolation of the products was readily performed by extraction with petroleum ether and the Pd(PPh3)4/PEG-400
MCM-41-supported bidentate phosphine palladium(0) complex as an efficient catalyst for the heterogeneous Stille reaction
作者:Hong Zhao、Yue Wang、Junchao Sha、Shouri Sheng、Mingzhong Cai
DOI:10.1016/j.tet.2008.05.120
日期:2008.8
Stille coupling reaction of organostannanes with organic halides has been developed in the presence of a catalytic amount of MCM-41-supportedbidentatephosphine palladium(0) complex (0.5 mol %) in DMF/H2O (9:1) under air atmosphere in high yields. This polymeric palladium catalyst exhibits higher activity than Pd(PPh3)4 and can be reused at least 10 times without any decrease in activity.
在空气中DMF / H 2 O(9:1)中催化量的MCM-41负载的双齿膦膦钯(0)络合物(0.5 mol%)的存在下,开发了有机锡与有机卤化物的Stille偶联反应。高产的气氛。该聚合钯催化剂显示出比Pd(PPh 3)4更高的活性,并且可以重复使用至少10次而活性没有降低。
TRICYCLIC INHIBITORS OF FATTY ACID AMIDE HYDROLASE
申请人:Boger Dale L.
公开号:US20100216750A1
公开(公告)日:2010-08-26
A series of substituted oxazole compounds having an alpha keto side chain at the 2 position and an aromatic, heteroaromatic or heterocycle substituent at the 5 position are disclosed. These compounds exhibit inhibition of fatty acid amid hydrolase and arc useful for treatment of malconditions involving that enzyme.