Practical Syntheses of N-Substituted 3-Hydroxyazetidines and 4-Hydroxypiperidines by Hydroxylation with Sphingomonas sp. HXN-200
摘要:
[GRAPHICS]Hydroxylation of N-substituted azetidines 11 and 12 and piperidines 15-19 with Sphingomonas sp. HXN-200 gave 91-98% of the corresponding 3-hydroxyazetidines 13 and 14 and 4-hydroxypiperidines 20-24, respectively, with high activity and excellent regioselectivity. High yields and high product concentrations (2 g/L) were achieved with frozen/thawed cells as biocatalyst. For the first time, rehydrated lyophilized cells were successfully used for the biohydroxylation.
Process for preparing n-substituted 4-hydroxypiperidines by enzymatic hudroxylation
申请人:——
公开号:US20040029237A1
公开(公告)日:2004-02-12
A process for the preparation of N-substituted 4-hydroxypiperidine, wherein an oxygen atom is inserted regioselectively into the corresponding N-substituted piperidine, by using as a biocatalyst a bacterium degrading alkanes or alicyclic hydrocarbons, or a prokaryotic host-organism having the gene(s) necessary for the hydroxylation derived from the said bacterium, or an enzyme having hydroxylation activity derived therefrom. The bacterium may be selected from species from, for example, the genera Sphingomonas and Pseudomonas, that are capable of degrading n-alkanes having 4 to 20 carbon atoms.
Process for preparing N-substituted 4-hydroxypiperidines by enzymatic hydroxylation
申请人:Eidgenössische Technische Hochschule Zürich
公开号:EP1188837A1
公开(公告)日:2002-03-20
A process for the preparation of N-substituted 4-hydroxypiperidine, wherein an oxygen atom is inserted regioselectively into the corresponding N-substituted piperidine, by using as a biocatalyst a bacterium degrading alkanes or alicyclic hydrocarbons, or a prokaryotic host-organism having the gene(s) necessary for the hydroxylation derived from the said bacterium, or an enzyme having hydroxylation activity derived therefrom. The bacterium may be selected from species from, for example, the genera Sphingomonas and Pseudomonas, that are capable of degrading n-alkanes having 4 to 20 carbon atoms.
Polarizing plate protective film, polarizing plate, liquid crystal display device, and production method of polarizing plate protective film
申请人:FUJIFILM Corporation
公开号:US10895775B2
公开(公告)日:2021-01-19
The invention is directed to a polarizing plate protective film containing a polymer having at least one of an ester bond and an amide bond and a compound which generates a base by an action of an acid, a polarizing plate including the polarizing plate protective film and a polarizer, a liquid crystal display device including a liquid crystal cell and the polarizing plate, and a production method of a polarizing plate protective film including producing the Polarizing plate protective film with a composition containing a polymer having at least one of an ester bond and an amide bond and a compound which generates a base by an action of an acid.
PROCESS FOR PREPARING N-SUBSTITUTED 4-HYDROXYPIPERIDINES BY ENZYMATIC HYDROXYLATION
申请人:Eidgenössische Technische Hochschule Zürich
公开号:EP1319085A1
公开(公告)日:2003-06-18
POLARIZING PLATE PROTECTIVE FILM, POLARIZING PLATE, LIQUID CRYSTAL DISPLAY DEVICE, AND PRODUCTION METHOD OF POLARIZING PLATE PROTECTIVE FILM
申请人:FUJIFILM Corporation
公开号:US20170090072A1
公开(公告)日:2017-03-30
The invention is directed to a polarizing plate protective film containing a polymer having at least one of an ester bond and an amide bond and a compound which generates a base by an action of an acid, a polarizing plate including the polarizing plate protective film and a polarizer, a liquid crystal display device including a liquid crystal cell and the polarizing plate, and a production method of a polarizing plate protective film including producing the Polarizing plate protective film with a composition containing a polymer having at least one of an ester bond and an amide bond and a compound which generates a base by an action of an acid.