Synthesis of new crosslinkable co-polymers containing a push–pull zinc porphyrin for non-linear optical applications
摘要:
In this paper, the synthesis of a crosslinkable co-polymer containing new push-pull arylethynyl zinc porphyrins is described. The synthesis of porphyrin chromophores, analogous to Therien's porphyrin functionalized with a methacrylic polymerizable group and a carboxylic acid crosslinking group was achieved with a new synthetic procedure leading to a higher overall yield compared to what was previously reported in the literature for similar and simpler structures. Radical copolymerization of the porphyrin chromophore with glycidyl methacrylate has then been carried out with success. This work opens a perspective on the possibility to integrate porphyrinic chromophore with high first-order molecular quadratic hyperpolarizability coefficient in opto-electronic devices. (c) 2005 Elsevier Ltd. All rights reserved.
Oxidation of secondary alcohols using solid-supported hypervalent iodine catalysts
作者:Frederic Ballaschk、Stefan F. Kirsch
DOI:10.1039/c9gc02605c
日期:——
It is shown how secondaryalcohols are oxidized to provide the corresponding ketones by use of Oxone® and solid-supported hypervalent iodine catalysts. Under experimentally simple conditions with acetonitrile at elevated temperatures, excellent conversions were achieved with low catalyst loadings (0.2–5 mol%) when employing the conjugates 5 and 6 derived from IBX and IBS. The catalysts are broadly
Benzoic acid derivatives and pharmaceutical agents comprising the same as active ingredient
申请人:——
公开号:US20040002493A1
公开(公告)日:2004-01-01
A pharmaceutical composition, which comprises a benzoic acid derivative of formula (I)
1
wherein R
1
is COOH, COOR
6
etc.; A, B is carbocyclic ring or heterocyclic ring; R
2
is alkyl, alkenyl, alkynyl etc.; R
4
is alkyl, cycloalkyl etc.; R
5
is carbocyclic ring or heterocyclic ring;
or non-toxic salts thereof.
The compound of the formula (I) can bind to Prostaglandin E
2
receptors, especially, EP
3
receptor and/or EP
4
receptor and show the antagonizing activity, and useful for the prevention and/or treatment of disease, for example, pain, allergy, Alzheimer's disease, cancer.
BENZOIC ACID DERIVATIVES AND DRUGS CONTAINING THE SAME AS THE ACTIVE INGREDIENT
申请人:ONO PHARMACEUTICAL CO., LTD.
公开号:EP1314719A1
公开(公告)日:2003-05-28
A pharmaceutical composition, which comprises a benzoic acid derivative of formula (I)
wherein R1 is COOH, COOR6 etc.; A, B is carbocyclic ring or heterocyclic ring; R2 is alkyl, alkenyl, alkynyl etc.; R4 is alkyl, cycloalkyl etc.; R5 is carbocyclic ring or heterocyclic ring;
or non-toxic salts thereof.
The compound of the formula (I) can bind to Prostaglandin E2 receptors, especially, EP3 receptor and/or EP4 receptor and show the antagonizing activity, and useful for the prevention and/or treatment of disease, for example, pain, allergy, Alzheimer' s disease, cancer.
α,α-Difluorophosphonomethyl azobenzene derivatives as photo-regulated phosphoamino acid analogs. 1. Design and synthesis
作者:Seung Bum Park、Robert F. Standaert
DOI:10.1016/s0040-4039(99)01400-8
日期:1999.9
A series of novel, photoregulated phosphoamino acid analogs based on an azobenzene core bearing an alpha,alpha-difluoromethylphosphonate as a hydrolytically stable phosphate isostere have been prepared with N-Fmoc protection for use in peptide synthesis. Classes of reagents analogous to both phosphotyrosine and phosphoserine/threonine were prepared by a common route employing a nitrosoarene/aniline condensation to form the azo linkage and the Cu(I)promoted coupling of an iodoarene with (diethylphosphono)difluoromethyl cadmium bromide (Burton's method) to introduce the phosphonate moiety. (C) 1999 Elsevier Science Ltd. All rights reserved.