Approaches toward the synthesis of thio- beta -D -galactose derivatives are described. These compounds were prepared from the parent carbohydrates: D-galactose, methyl P-D-galactoside and methyl P- ...
N-substituted .alpha.-amino acids and derivatives thereof having
申请人:Warner-Lambert Company
公开号:US05179085A1
公开(公告)日:1993-01-12
N-substituted .alpha.-amino acids and derivatives thereof are described, as well as methods for the preparation and pharmaceutical composition of same, which are useful in selectively blocking the N-methyl-D-aspartate (NMDA) excitatory amino acid receptors in mammals and also are useful in treating cerebrovascular disorders such as cerebral ischemia or cerebral infarction resulting from thromboembolic or hemorrhagic stroke, cerebral vasospasm, hypoglycemia, cardiac arrest, status epilepticus and cerebral trauma as well as for treating schizophrenia, epilepsy, neurodegenerative disorders, Alzheimer's disease or Huntington's disease and also additionally useful as anesthetics in surgical procedures where a finite risk of cerebrovascular damage exists.
Delineation of the Critical Parameters of Salt Catalysts in the N
<i>‐</i>
Formylation of Amines with CO
<sub>2</sub>
作者:Martin Hulla、Daniel Ortiz、Sergey Katsyuba、Dmitry Vasilyev、Paul J. Dyson
DOI:10.1002/chem.201901686
日期:2019.8.22
N-formylation of amines combining CO2 as a C1 source with a hydrosilane reducing agent is a convenient route for the synthesis of N-formylated compounds. A large number of salts including ionicliquids (ILs) have been shown to efficiently catalyze the reaction and, yet, the key features of the catalyst remain unclear and the best salt catalysts for the reaction remain unknown. Here we demonstrate the