AbstractA very general and efficient catalytic protocol for the selective reduction of carboxylic acids to their corresponding alcohols under mild conditions is described. Various carboxylic acids, including benzoic acids, were reduced in good yields using the presented methodology. The ruthenium‐catalysed method yields a highly chemoselective reduction permitting the reduction of a carboxylic acid functionality in the presence of numerous other potentially reducible moieties.magnified image
[EN] METHODS OF TREATING ALZHEIMER'S DISEASE USING AROMATICALLY SUBSTITUTED omega-AMINO-ALKANOIC ACID AMIDES AND ALKANOIC ACID DIAMIDES<br/>[FR] METHODES DE TRAITEMENT DE LA MALADIE D'ALZHEIMER AU MOYEN D'AMIDES D'ACIDE O-AMINO-ALCANOIQUE A SUBSTITUTIONS AROMATIQUES ET DE DIAMIDES D'ACIDE ALCANOIQUE
申请人:ELAN PHARM INC
公开号:WO2003103652A1
公开(公告)日:2003-12-18
Disclosed.are methods for treating Alzheimer's disease, and other diseases,
and/or inhibiting beta-secretase enzyme, and/or inhibiting deposition of
A beta peptide in a mammal, by use of compounds of formula (I) wherein the variables
R1, R2, R3, R4, R5, X1,
and X2 are defined herein.
The preparation of hydroxy amides from a wide variety of lactones and amines has been achieved at 9 kbar and 30 or 65 °C. The yields of hydroxy amides were moderate to excellent. Some limitations were encountered in the reaction of 6-hexanolide; for example, diethylamine gave only a 15% yield of the corresponding amide at 8 kbar and 60 °C. 4-Pentanolide did react with extremely unreactive amines such
已在 9 kbar 和 30 或 65 °C 下实现了由多种内酯和胺制备羟基酰胺。羟基酰胺的产率中等至极好。6-己内酯的反应遇到了一些限制;例如,二乙胺在 8 kbar 和 60 °C 下仅产生 15% 的相应酰胺收率。4-戊内酯确实与极不活泼的胺如4-硝基苯胺和二苯胺反应,产物是羟基酰胺和3-氨基丁酸的混合物。
High-pressure Ammonolysis of Lactones to Hydroxyamides
The preparation of hydroxyamides from a variety of lactones and amines has been achieved at 9 kbar and 30 °C or 65 °C. The yields of hydroxyamides were excellent to moderate.
已在 9 kbar 和 30 °C 或 65 °C 下实现了由各种内酯和胺制备羟基酰胺。羟基酰胺的产率极好至中等。
LiNTf<sub>2</sub>-Catalyzed Aminolysis of Lactones with Stoichiometric Quantities of Amines
LiNTf2 in the reaction of lactones with amines is able to activate cyclic esters towards ring opening, thus leading to clean open-chain amides under mild conditions and using a stoichiometric amount of amine. The generality of the method was demonstrated by a range of selected lactones and amines.
Methods of treating alzheimer's disease using aromatically substituted w-amino-alkanoic acid amides and alkanoic acid diamides
申请人:Maillard Michel
公开号:US20060089355A1
公开(公告)日:2006-04-27
Disclosed are methods for treating Alzheimer's disease, and other diseases, and/or inhibiting beta-secretase enzyme, and/or inhibiting de-position of A beta peptide in a mammal, by use of compounds of formula (I) wherein the variables R
1
, R
2
, R
3
, R
4
, R
5
, X
1
, and X
2
are defined herein.