The first enantioselective chiral phosphoricacid-catalyzedtransferhydrogenation of unprotected ortho-hydroxyaryl alkyl N−H ketimines using Hantszch di-tert-butyl ester as a reductant is reported. A variety of ortho-hydroxybenzylamines were obtained in good to excellent yields and enantiomeric excesses.
[EN] DI(AMIDO(ALKYL)PHENOL) COMPOUNDS AND POLYMERS FORMED THEREFROM<br/>[FR] COMPOSÉS DE DI(AMIDO(ALKYL)PHÉNOL) ET POLYMÈRES FORMÉS À PARTIR DE CES DERNIERS
申请人:VALSPAR SOURCING INC
公开号:WO2015057932A1
公开(公告)日:2015-04-23
Di(amido(alkyl)phenol) compounds and upgraded molecular weight polymers made from such compounds have particular utility in coating compositions, especially for use on food and beverage contact substrates that are formed into or will be formed into containers or container components.
3,4-DI-SUBSTITUTED CYCLOBUTENE-1,2-DIONES AS CXC-CHEMOKINE RECEPTOR LIGANDS
申请人:Taveras Arthur G.
公开号:US20090306079A1
公开(公告)日:2009-12-10
There are disclosed compounds of the formula
or a pharmaceutically acceptable salt or solvate thereof which are useful for the treatment of chemokine-mediated diseases such as acute and chronic inflammatory disorders and cancer.
QUATERNARY AMMONIUM COMPOUNDS USEFUL AS MUSCARINIC RECEPTOR ANTAGONISTS
申请人:Husfeld Craig
公开号:US20120232053A1
公开(公告)日:2012-09-13
The invention provides compounds of the formula:
in salt or zwitterionic form or a pharmaceutically acceptable salt thereof, wherein R
1-6
, a, Z and Q are as defined in the specification. These compounds are muscarinic receptor antagonists. The invention also provides pharmaceutical compositions containing such compounds, processes for preparing such compounds and methods of using such compounds to, for example, treat pulmonary disorders such as chronic obstructive pulmonary disease and asthma.
Optically active hydroxybenzylamine derivative, optically active amine-boron compound containing said derivative, and process for producing optically active compound by using said compound
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0311385A2
公开(公告)日:1989-04-12
Optically active hydroxybenzylamine derivatives of the Formula:
wherein R¹ denotes a hydrogen atom, lower alkyl group or lower alkoxy group; R² denotes a lower alkyl group; * signifies an asymmetric carbon atom; and the hydroxyl group is located on the phenyl at the ortho- or meta- position relative to the substituent having the asymmetric carbon,
an optically active amine-boron compound having said derivative as a ligand, and
a process for producing an optically active compound by using said compound.
The derivations are useful as asymmetric ligands of asymmetric reducing agents. The optically-active amine-boron complex enables optically active products to be obtained specifically.