Efficient Preparation of Biologically Important 1,2-Amino Alcohols
摘要:
An efficient three-step methodology developed for the preparation of 1,2-amino alcohols. In the first step a rapid coupling between bromoketones and potassium phthalimide in ionic liquid produced alpha-phthalimido ketones in quantitative yields, which is followed by a facile reduction using NaCNBH3 in acetic acid to give corresponding phthalimido alcohols and finally effecting hydrazinolysis in water at 60 degrees C to yield biologically important 1,2-amino alcohols.
Cyclic trans-β-amino alcohols: preparation and enzymatic kinetic resolution
摘要:
Enantioenriched cyclic beta-amino alcohols, trans-2-aminocyclohexanols (ee, > 99%), trans-2-aminocyclopentanols (ee, > 99%), trans-1-amino-2-indanols (ee, > 99%) and trans-2-amino-1-indanols (ee, similar to 98%) were prepared in high yields via an Arthrobacter sp. Lipase/PLAP catalyzed kinetic resolution of racemic phthalimido acetates. The addition of toluene as a co-solvent dramatically improved the hydrolysis and enantioselectivity, whereas for indanols, substrate immobilization on Celite improved the efficacy of the kinetic resolution. (C) 2011 Elsevier Ltd. All rights reserved.
Bicyclic pyrrolyl amides as glucogen phosphorylase inhibitors
申请人:——
公开号:US20030232875A1
公开(公告)日:2003-12-18
Heterocyclic amide derivatives, of formula (I): wherein —X-Y-Z- is selected from —S—CR
4
═CR
5
—, —CR
4
═CR
5
—S—, —O—CR
4
═CR
5
—, —CR
4
═CR
5
—O—, —N═CR
4
—S—, —S—CR
4
═N—, —NR
6
—CR
4
═CR
5
— and —CR
4
═CR
5
—NR
6
—; or a pharmaceutically acceptable salt or an in vivo hydrolysable ester thereof; (with provisos); possess glycogen phosphorylase inhibitory activity and accordingly have value in the treatment of disease states associated with increased glycogen phosphorylase activity. Processes for the manufacture of said heterocyclic amide derivatives and pharmaceutical compositions containing them are described.
Synthesis of 4-aryl-2-benzazepine-1,5-diones by photocyclization of N-(2-arylethyl)phthalimides
作者:M.Rita Paleo、Domingo Domínguez、Luis Castedo
DOI:10.1016/s0040-4020(01)87039-3
日期:1994.3
The photocyclization of N-(2-arylethyl)phthalimides to 4-aryl-2-benzazepine-1,5-diones is described. We found that the presence of electron donating substituents on the aryl ring (as in 10a and b) is necessary for the cyclization process to occur. The procedure also allowed synthesis of 2-benzazepinediones with a carboxylate group at C3 (11c and d) which were obtained as 1:1 mixture of diastereoisomers
Paleo M. Rita, Dominguez Domingo, Castedo Luis, Tetrahedron, 50 (1994) N 11, S 3627-3638
作者:Paleo M. Rita, Dominguez Domingo, Castedo Luis
DOI:——
日期:——
BICYCLIC PYRROLYL AMIDES AS GLUCOGEN PHOSPHORYLASE INHIBITORS
申请人:AstraZeneca AB
公开号:EP1317459B1
公开(公告)日:2004-04-07
Efficient Preparation of Biologically Important 1,2-Amino Alcohols
作者:Pankaj Gupta、Abdul Rouf、Bhahwal A. Shah、Debaraj Mukherjee、Subhash C. Taneja
DOI:10.1080/00397911.2011.603876
日期:2013.1.1
An efficient three-step methodology developed for the preparation of 1,2-amino alcohols. In the first step a rapid coupling between bromoketones and potassium phthalimide in ionic liquid produced alpha-phthalimido ketones in quantitative yields, which is followed by a facile reduction using NaCNBH3 in acetic acid to give corresponding phthalimido alcohols and finally effecting hydrazinolysis in water at 60 degrees C to yield biologically important 1,2-amino alcohols.