摘要:
A photographic element comprises a silver halide emulsion layer having associated therewith a dye forming coupler and a combination of a carbonamide compound, a phenolic compound, and an electron-rich compound. Such a combination provides improved dye stability.
摘要:
A photographic element comprises a light-sensitive silver halide emulsion layer having associated therewith (a) a 1H-pyrazolo[1,5-b][1,2,4]triazole dye-forming coupler; (b) a sulfonamide compound free of aromatic substituents directly linked to the sulfonamide nitrogen or sulfur atoms and (c) a dialkoxy substituted aromatic compound.
摘要:
Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith (a) a pyrazolotriazole dye-forming coupler; (b) a cyclic aminosulfone first stabilizer; and (c) a sulfonamide compound co-stabilizer free of aromatic substituents and having a melting point of less than 150° C. The image dye formed by the coupler exhibits improved dye light stability.
摘要:
Disclosed is a silver halide photographic element comprising a support bearing a light sensitive silver halide emulsion layer having associated therewith a cyclic azole dye forming coupler and a stabilizer combination comprising:i) a compound having the following Formula I: ##STR1## and ii) a compound having the following Formula S: ##STR2## wherein R.sub.3 is an alkyl, alkenyl, or aryl group; R.sub.5 is an alkyl group; and R.sub.4 and R.sub.6 are substituents; m is an integer of 0 to 5; and n is an integer of 0 to 4.
摘要:
4-R.sup.4 -R.sup.5 -2-Saccharinylmethyl aryl carboxylates, useful in the treatment of degenerative diseases, are prepared by reacting a 4-R.sup.4 -R.sup.5 -2-halomethylsaccharin with an arylcarboxylic acid in the presence of an acid-acceptor.
摘要:
Novel 2-substituted saccharins which inhibit the enzymatic activity of proteolytic enzymes, are useful in the treatment of degenerative diseases and have the formula 0010wherein:L is --O--, --S--, --SO-- or --SO.sub.2 --; m and n are each independently 0 or 1; R.sub.1 is halo, lower-alkanoyl, 1-oxophenalenyl, phenyl or substituted phenyl, heterocyclyl or substitued heterocyclyl or, when L is --O-- and n is 1, cycloheptatrienon-2-yl or, when L is --S-- and n is 1, cyano or lower-alkoxythiocarbonyl or, when L is --SO.sub.2 -- and n is 1, lower-alkyl or trifluoromethyl; R.sub.2 is hydrogen, lower-alkoxycarbonyl, phenyl or phenylthio; and R.sub.3 and R.sub.4 are each hydrogen or various substituents and processes for preparation and pharmaceutical compositions and method of use thereof are disclosed.
摘要:
Certain reducible compounds are useful in analytical compositions, elements and methods, e.g. for assays of bacterial cells. These compounds comprise a moiety which provides a detectable species (e.g. a dye) when released from the compound in an environment of pH 9 or less (i.e. physiological pH). Structurally, the reducible compounds are aromatic derivatives or quinones having suitable substituents which promote varying amounts of moiety release at physiological pH. When reduced at about pH 7, the preferred compounds release at least 50% of the available detectable species within 30 minutes.
摘要:
Disclosed is a photographic element complising a light sensitive silver halide emulsion layer having associated therewith a cyan dye forming coupler having Formula (I): wherein R1 and R3 independently represent hydrogen or an alkyl group; R2 represents a carbocyclic or heterocyclic aromatic group; n represents 1, 2, or 3; each X is an independently selected substituent where at least one X located at a position of the phenyl ring meta or para to the sulfonyl group and is either an alkoxy group having a branched carbon or an aiyloxy group; and Z represents hydrogen or a group that can be split off by the reaction of the coupler with an oxidized color-developing compound; provided that the substituents of the compound of formula (I) are selected so that the compound has a melting point of 160° C. or less. The element provides improved phase stability during manufacturing while exhibiting satisfactory hue and dye light stability.
摘要:
An aqueous-developable chromogenic photographic heat-transferable non-aqueous dye-diffusion-transfer photographic element is disclosed, wherein said element comprises radiation sensitive silver halide, a dye-providing compound that forms or releases a heat-transferable image dye upon reaction of said compound with the oxidation product of a primary amine developing agent, a hydrophilic binder, and a thermal solvent for facilitating non-aqueous diffusion transfer according to formula (I) ##STR1## wherein AH is a hydrogen bond donating group with an aqueous pK.sub.a for proton loss of greater than 6;L.sup.1 and L.sup.2 are each independently divalent linking groups consisting of groups of 1 to 12 atoms or are independently absent;m is 1,2, or 3;Q comprises a group of 2 to 15 carbon atoms selected from the group consisting of aromatic rings, alkyl chains, alkyl rings, or ring-chain combinations, optionally substituted with substituents, Z, consisting of alkyl groups or halogens;B is a hydrogen bond accepting group with an aqueous pK.sub.a for proton gain of less than 6;n is 1 or 2;the groups AH and B cannot hydrogen bond to form a ring of either 5 or 6 atoms;R is an alkyl, aryl and alkylaryl group of from 1 to 18 carbon atoms;the calculated log of the octanol/water partition coefficient (clogP) is greater than 3 and less than 10.
摘要:
Compounds having the structural formula ##STR1## which inhibit the enzymatic activity of proteolytic enzymes, and processes for preparation thereof, method of use thereof in treatment of degenerative diseases and pharmaceutical compositions thereof are disclosed.