Derivatives of 4-acetyl-3-hydroxy-2-alkyl-phenoxycarboxylic acids
申请人:Hoffmann-La Roche Inc.
公开号:US04672066A1
公开(公告)日:1987-06-09
The invention relates to compounds of the formula ##STR1## wherein R is hydrogen or lower alkyl, Y is alkylene; Z is alkylene, ##STR2## the asterisk herein denotes bonding to the substituted acetophenone; R.sub.2 is hydrogen or lower alkoxy; and n is an integer of 1 to 3; A is ##STR3## and HET is a 5-or 6- membered nitrogen containing heterocyclic group, and their acid addition salts. The compounds of formula I of the invention are useful for the treatment of allergic conditions, such as, asthma and cardiovascular diseases, such as, angina and arrhythmias.
Synthesis of N-heterocyclic ligands for use in affinity and mixed mode chromatography
作者:Simon J. Mountford、Eva M. Campi、Andrea J. Robinson、Milton T.W. Hearn
DOI:10.1016/j.tet.2010.11.003
日期:2011.1
designed to consist of a pyridinyl or related aza-heterocyclic nucleus bearing a pendant arm containing either an alkylamine, alkylthiol or hydroxyalkyl nucleophilic group to allow their facile immobilisation onto an activated support matrix. Ligand diversity was achieved by altering the length of the alkyl chain between the heterocyclic nucleus and nucleophilic group, varying the position of alkyl chain
Derivatives of (E)-3-(4-oxo-4H-quinazolin-3-yl)-2-propenamide
申请人:Hoffmann-La Roche Inc.
公开号:US04599336A1
公开(公告)日:1986-07-08
Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, lower alkyl, lower cycloalkyl, lower alkoxy, hydroxy, halo, lower alkylthio, lower alkylsulfinyl, lower alkylsulfonyl, di-(C.sub.1 -C.sub.7) alkyl-N(CH.sub.2).sub.n O-- or 2-hydroxyethoxy; n is 2 to 7; R.sub.2 is hydrogen, lower alkyl or lower alkoxy; R.sub.3 is hydrogen or methyl; R.sub.4 is hydrogen or lower alkyl; R.sub.5 is hydrogen or lower alkyl provided however if R.sub.2 is other than hydrogen R.sub.5 is hydrogen; m is 1 to 7; Y is ##STR2## --O-- or --S--; w is zero or one; and A is an unsubstituted or substituted aromatic 5- or 6-membered heterocyclic radical; or pharmaceutically acceptable addition salts thereof are described. The compounds of formula I are useful for treating allergic conditions and vascular disorders.
PHOTOELECTRIC CONVERSION ELEMENT, SOLAR CELL, AND COMPOSITION
申请人:FUJIFILM Corporation
公开号:US20180108492A1
公开(公告)日:2018-04-19
Provided are a photoelectric conversion element, a solar cell using the photoelectric conversion element, and a composition. The photoelectric conversion element includes a first electrode including a photosensitive layer, which includes a light absorbing agent, on a conductive support. The light absorbing agent includes a compound having a perovskite-type crystal structure that includes organic cations represented by the following Formulae (1) and (2), a cation of a metal atom, and an anion.
R
1
—N(R
1a
)
3
+
Formula (1)
R
2
—N(R
2a
)
3
+
Formula (2)
In Formulae (1) and (2), R
1
represents a specific group such as an alkyl group (including a specific substituent group in a case where the number of carbons is 1 or 2), and a cycloalkyl group. R
2
represents a methyl group, an ethyl group, and the like. R
1a
and R
2a
represent a specific group such as a hydrogen atom and an alkyl group.
AFFINITY LIGANDS AND METHODS FOR PROTEIN PURIFICATION
申请人:Hearn Milton TW
公开号:US20120259094A1
公开(公告)日:2012-10-11
The present invention relates generally to affinity ligands and chemical affinity ligand-matrix conjugates for use as chromatographic adsorbents and methods which utilise the adsorbents in the purification of proteins by affinity chromatography. The affinity ligand-matrix conjugates of the present invention comprise ligands of general formula (I): wherein m represents an integer from 0-2, n represents an integer from 0-6, p represents an integer from 0-4, R
1
represents H or C
1-3
alkyl, R
2
is an optional substituent, and X is the position at which the ligand is immobilized, optionally via a linker.