Cyclic amino acid compounds pharmaceutical compositions comprising same and methods for inhibiting &bgr;-amyloid peptide release and/or its synthesis by use of such compounds
申请人:Elan Pharmaceuticals, Inc.
公开号:US06528505B1
公开(公告)日:2003-03-04
Disclosed are compounds which inhibit &bgr;-amyloid peptide release and/or its synthesis, and, accordingly, have utility in treating Alzheimer's disease. Also disclosed are pharmaceutical compositions comprising a compound which inhibits &bgr;-amyloid peptide release and/or its synthesis as well as methods for treating Alzheimer's disease both prophylactically and therapeutically with such pharmaceutical compositions.
Hydrogenations at Room Temperature and Atmospheric Pressure with Mesoionic Carbene-Stabilized Borenium Catalysts
作者:Patrick Eisenberger、Brian P. Bestvater、Eric C. Keske、Cathleen M. Crudden
DOI:10.1002/anie.201409250
日期:2015.2.16
1,2,3‐Triazolylidene‐based mesoionic carbene boranes have been synthesized in a convenient one‐pot protocol from the corresponding 1,2,3‐triazolium salts, base, and borane. Borenium ions are obtained by hydride abstraction and serve as catalysts in mild hydrogenation reactions of imines and unsaturated N‐heterocycles at ambient pressure and temperature.
Deoxyamino acid compounds, pharmaceutical compositions comprising same, and methods for inhibiting &bgr;-amyloid peptide release and/or its synthesis by use of such compounds
申请人:Elan Pharmaceuticals, Inc.
公开号:US06509331B1
公开(公告)日:2003-01-21
Disclosed are compounds which inhibit &bgr;-amyloid peptide release and/or its synthesis, and, accordingly, have utility in treating Alzheimer's disease. Also disclosed are pharmaceutical compositions comprising a compound which inhibits &bgr;-amyloid peptide release and/or its synthesis as well as methods for treating Alzheimer's disease both prophylactically and therapeutically with such pharmaceutical compositions.
aliphatic substrates for selective C(sp3)–H bond borylations. Heterocyclic molecules are selectively borylated using the inherently elevated reactivity of the C–H bonds. A number of late-stage C–H functionalization have been described using the same catalysts. Furthermore, we show that one of the catalysts could be used even in open air for the C(sp2)–H and C(sp3)–Hborylations enabling the method more general
Cobalt-Catalyzed Suzuki Biaryl Coupling of Aryl Halides
作者:Soneela Asghar、Sanita B. Tailor、David Elorriaga、Robin B. Bedford
DOI:10.1002/anie.201710053
日期:2017.12.18
Readily accessed cobalt pre-catalysts with N-heterocyclic carbene ligands catalyze the Suzuki cross-coupling of aryl chlorides and bromides with alkyllithium-activated arylboronic pinacolate esters. Preliminary mechanistic studies indicate that the cobalt species is reduced to Co0 during the reaction.