 Organosolv delignification and saccharification process for lignocellulosic plant materials |
| We claim: 1. In a process for the production of carbohydrate hydrolysates of cellulose from a ... |
|
| Tartrate catabolism gene |
| What is claimed is: 1. A method for making an incompetent unicellular microorganism host competent ... |
|
| Method of encapsulating cells in a tubular extrudate |
| Methods and systems are disclosed for encapsulating viable cells which produce biologically-active ... |
|
| Sulfur-containing antimicrobial ester-amides |
| We claim: 1. A sulfur-containing ester amide having antimicrobial activity and the general ... |
|
| Continuous anaerobic digestor system |
| OF THE FIGURES FIG. 1 shows the simplest embodiment 10 of the invention, an improved system for ... |
|
| Bioconversion of industrial cellulosic pulp materials to protein-enriched product |
| What I claim is: 1. A process for the formation of proteinaceous material, which consists of: (a) ... |
|
| Novel bioconverting microorganisms |
| OF THE INVENTION This invention relates to two Actinoplanes missouriensis strains which together ... |
|
| Mixed microbial fermentation of carbonaceous matter to road de-icer |
| I claim: 1. A process for production of mixed calcium-magnesium organic acid salts useful for de-... |
|
| Supercritical ammonia treatment of lignocellulosic materials |
| OF THE INVENTION As used throughout the specification, "bioavailability" refers to the relative ... |
|
| Apparatus for bioconversion of vegetal raw material |
| It is therefore an object of the present invention to ensure a uniform heat- and mass-transfer ... |
|
|
Polyiods benzene derivatives and X-ray contrast media containing the same
| Details |
Inventors: Tilly, Guy; Hardouin, Michel Jean-Charles; Lautrou, Jean;
Assignee: Guerbet S.A. (Aulnay-sous-Bois, FR)
Primary Examiner: Thomas, Jr.; James O.
Assistant Examiner: Breitenstein; G. T.
Attorney, Agent or Firm: Young & Thompson
This invention relates to compounds of the formula: ##STR1## in which: R.sub.1 represents a hydrogen atom or a C.sub.1-4 alkyl radical or a C.sub.1-4 hydroxyalkyl radical, R.sub.2 represents a C.sub.1-4 alkyl radical or a C.sub.1-4 hydroxyalkyl radical, A represents a group of the formula: ##STR2## in which: R.sub.3 represents a hydrogen atom, a group of the formula ##STR3## in which R.sub.5 and R.sub.6 represent each a hydrogen atom or a C.sub.1-4 alkyl radical or a C.sub.1-4 hydroxyalkyl radical, or a group of the formula ##STR4## in which R.sub.7 represents a C.sub.1-4 alkyl radical or a C.sub.1-4 hydroxyalkyl radical and R.sub.8 represents a hydrogen atom, a C.sub.1-4 alkyl radical or a C.sub.1-4 hydroxyalkyl radical, a is 0 or 1 and n is an integer from 1 to 5 inclusive, R.sub.4 represents a hydrogen atom or a C.sub.1-4 alkyl radical or a C.sub.1-4 hydroxyalkyl radical, their methyl and ethyl esters and their salts with pharmaceutically acceptable bases. Said compounds are useful as X-ray contrast media. |
|
DETAILED DESCRIPTION Having now described our invention what we claim as new and desire to secure by Letters Patent is: 1.
A compound selected from a compound of the formula: ##STR17## in which: R.
sub.
1 is selected from hydrogen, C.
sub.
1-4 alkyl and C.
sub.
1-4 hydroxyalkyl, R.
sub.
2 is selected from C.
sub.
1-4 alkyl and C.
sub.
1-4 hydroxyalkyl, A represents a group of the formula: ##STR18## in which: R.
sub.
3 is selected from: hydrogen; a group of the formula ##STR19## in which R.
sub.
5 and R.
sub.
6 are independently selected from hydrogen, C.
sub.
1-4 alkyl and C.
sub.
1-4 hydroxyalkyl; and a group of the formula ##STR20## in which R.
sub.
7 is selected from C.
sub.
1-4 alkyl and C.
sub.
1-4 hydroxyalkyl and R.
sub.
8 is selected from hydrogen, C.
sub.
1-4 alkyl and C.
sub.
1-4 hydroxyalkyl, a is an integer from 0 to 1 and n is an integer from 1 to 5, R.
sub.
4 is selected from hydrogen, C.
sub.
1-4 alkyl and C.
sub.
1-4 hydroxyalkyl, its methyl and ethyl esters and its salt with a pharmaceutically acceptable base.
2.
A compound as defined in claim 1, in which: R.
sub.
1 is hydrogen, R.
sub.
2 is C.
sub.
1-4 alkyl, A represents a group of the formula: ##STR21## in which: R.
sub.
3 is selected from: hydrogen; a group of the formula --CO--NR.
sub.
5 R.
sub.
6 in which R.
sub.
5 is hydrogen and R.
sub.
6 is selected from C.
sub.
1-4 alkyl and C.
sub.
1-4 hydroxyalkyl; and a group of the formula --NR.
sub.
8 COR.
sub.
7 in which R.
sub.
7 is C.
sub.
1-4 alkyl and R.
sub.
8 is selected from hydrogen and C.
sub.
1-4 alkyl, n is an integer from 1 to 5 inclusive, and R.
sub.
4 is selected from hydrogen and C.
sub.
1-4 alkyl.
3.
2,4,6-Triiodo-5-acetamideo-1,3-bis[(2,4,6-triiodo-3 -N-hydroxyethylcarbamoyl-5-carboxy-phenyl)-carbamoyl-methyl-carbamoyl]benze ne or a salt thereof with a pharmaceutically acceptable base.
4.
X-ray contrast medium, comprising an effective amount of a compound selected from a compound of the formula: ##STR22## in which: R.
sub.
1 is selected from hydrogen, C.
sub.
1-4 alkyl and C.
sub.
1-4 hydroxyalkyl, R.
sub.
2 is selected from C.
sub.
1-4 alkyl and C
|
| Related patents |
|
|
Process for preparing 9.alpha.-OH BN alcohol
OF THE INVENTION The microorganisms which can be used to produce the compounds of the subject invention are the same as disclosed in U.S. Pat. No. 4,029,549. The ...
|
|
|
[21-leucine] human urogastrone, corresponding gene, corresponding recombinant plasmid, transformed cell and process for production thereof
The present invention is based on the confirmed findings: that a structural gene representing an hUG derivative in which the 21st amino acid residue comprises Leu which ...
|
|
|
Self-deploying boom
The oil monitoring and pollutant control apparatus comprises a flexible elongated body or boom being so folded that it can be retained in a body of water by a holding ...
|
|
|
Filter arrangement
It is an object of the present invention to develop a filter arrangement of the type mentioned at the outset in such a manner that continuous operation at constant ...
|
|
|
Vapor cleaning system
OF THE INVENTION When references are made to the accompanying drawing, the similar characters of reference represent the same corresponding parts. The accompanying ...
|
|
|
Microbial degradation of obnoxious organic wastes into innocucous materials
We claim: 1. A biologically pure culture of Pseudomonas cepacia var., niagarous selected from the group consisting of ATCC 31945, ATCC 31941, ATCC 31942, ATCC 31940, ATCC...
|
|
|
Process of the pulping of bleaching of vegetable material
A principal object of the present invention is to provide a process for producing pulp which incorporates improved pulping and bleaching steps therein. According to the ...
|
|
|
Method of preparing galcatooligosaccharide
OF THE INVENTION According to the present invention, .beta.-galactosidase having a galactosyl transfer reaction activity is utilized to serve as enzyme to hydrolyze ...
|
|
|
Process for the two-stage decomposition of hemi-celluloses to xylose
What is claimed is: 1. In a process for the two-stage decomposition of a hemi-cellulose of a xylan-containing natural product for the purpose of obtaining xylose wherein ...
|
|
|
No dig seepage pit cleaner
What is claimed is: 1. A seepage pit cleaner comprising a fluid conduit and a cleaning assembly, said entire assembly being insertable into a septic tank having a floor, ...
|
|
|
Molecular Biology 
