Nickel-catalyzed Conjugate Addition of Arylboron Reagents to α,β-Unsaturated Carbonyl Compounds with the Aid of a Catalytic Amount of an Alkyne
作者:Eiji Shirakawa、Yuichi Yasuhara、Tamio Hayashi
DOI:10.1246/cl.2006.768
日期:2006.7
Alkynes in combination with a catalytic amount of a nickel complex were found to catalyze the conjugate addition of arylboron reagents to α,β-unsaturated carbonyl compounds, where use of an optical...
Arylethanolamines derived from salicylamide with .alpha.- and .beta.-adrenoceptor blocking activities. Preparation of labetalol, its enantiomers and related salicylamides
作者:James E. Clifton、Ian Collins、Peter Hallett、David Hartley、Lawrence H. C. Lunts、Philip D. Wicks
DOI:10.1021/jm00348a013
日期:1982.6
A series of phenethanolamines (3) based on salicylamide has been prepared and shown to possess beta-adrenergic blocking properties. When the basic nitrogen atom was substituted by some aralkyl groups, the compounds also blocked alpha-adrenoceptors. The 1-methyl-3-phenylpropyl derivative labetalol (34) is antihypertensive in animals and man, and syntheses of its four stereoisomers are described. The
Synthesis of α-Tertiary Amine Derivatives by Intermolecular Hydroamination of Unfunctionalized Alkenes with Sulfamates under Trifluoromethanesulfonic Acid Catalysis
作者:Jun Fei、Zhen Wang、Zheren Cai、Hao Sun、Xu Cheng
DOI:10.1002/adsc.201500646
日期:2015.12.14
An efficient and mild trifluoromethanesulfonic acid-catalyzed hydroamination of unfunctionalized alkenes to afford α-tertiary amine derivatives at temperatures as low as room temperature is reported. 2,2,2-Trifluoroethyl sulfamate was found to be the optimal nitrogen source because its good solubility in both organic solvents and water facilitated both conversion and purification. The reaction conditions
[EN] BENZYL-, (PYRIDIN-3-YL)METHYL- OR (PYRIDIN-4-YL)METHYL-SUBSTITUTED OXADIAZOLOPYRIDINE DERIVATIVES AS GHRELIN O-ACYL TRANSFERASE (GOAT) INHIBITORS<br/>[FR] DÉRIVÉS D'OXADIAZOLOPYRIDINE À SUBSTITUTION BENZYLE, (PYRIDIN-3-YL)MÉTHYLE OU (PYRIDIN-4-YL)MÉTHYLE UTILISÉS EN TANT QU'INHIBITEURS DE LA GHRÉLINE O-ACYLTRANSFÉRASE (GOAT)
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2019149657A1
公开(公告)日:2019-08-08
The present invention relates to compounds of general formula (I), wherein the groups R1 and R2 are defined as in claim 1, which have valuable pharmacological properties, in particular bind to ghrelin O-acyl transferase (GOAT) and modulate its activity. The compounds are suitable for treatment and prevention of diseases which can be influenced by this receptor, such as metabolic diseases, in particular obesity.
Iridium-Catalyzed Alkene-Selective Transfer Hydrogenation with 1,4-Dioxane as Hydrogen Donor
作者:Deliang Zhang、Tomohiro Iwai、Masaya Sawamura
DOI:10.1021/acs.orglett.9b01989
日期:2019.8.2
using 1,4-dioxane as a hydrogen donor is described. The use of 1,2-bis(dicyclohexylphosphino)ethane (DCyPE), featuring bulky and highly electron-donating properties, led to high catalytic activity. A polystyrene-cross-linking bisphosphine PS-DPPBz produced a reusable heterogeneous catalyst. These homogeneous and heterogeneous protocols achieved chemoselective transfer hydrogenation of alkenes over