摘要:
.alpha.-Sulfophenylacetic acid derivatives of the general formula: ##STR1## (wherein R is a substituted or unsubstituted primary alcohol, cyclic alcohol or phenol compound residue), which are of value as intermediates of antibacterial agents, are selectively produced in a high yield by bringing a diester compound of the general formula: ##STR2## (wherein R has the same meaning as defined above) into contact with a strong acid.
摘要:
Novel penicillins of the formula ##STR1## wherein R is a branched chain alkyl group of from 3 to 14 carbon atoms, and their pharmaceutically acceptable salts, are easily absorbed in the blood and tissues through oral administration and show excellent antimicrobial activity against Gram-positive and Gram-negative bacteria, particularly against microorganisms of the genus Pseudomonas, such as Pseudomonas aeruginosa.
摘要:
Novel d-.alpha.-isobutylsulfobenzylpenicillin hemi-solvate crystals of the formula: ##STR1## (wherein A is a solvent selected from the class consisting of alcohols, ketones, ethers and esters) have excellent antibacterial activities and improved stability in terms of shelf-life.
摘要:
.alpha.-Sulfophenylacetic acid derivatives of the general formula: ##EQU1## (wherein R is a substituted or unsubsituted primary alcohol, cyclic alcohol or phenol compound residue), which are of value as intermediates of antibacterial agents, are selectively produced in a high yield by bringing a diester compound of the general formula: ##EQU2## (wherein R has the same meaning as defined above) into contact with a strong acid.
摘要翻译:选择性地以高产率制备具有通式为-CHCOOH | SO 3 R(其中R为取代或未取代的伯醇,环醇或酚化合物残基)的α-磺基苯乙酸衍生物,其为抗菌剂的中间体 通过将具有通式:CH 3 | -CHCOO-C-CH 3 || SO 3 R CH 3(其中R具有与上述相同的含义)的二酯化合物与强酸接触。
摘要:
A heat transfer member which is capable of enhancing efficiency of heat dissipation, and a connector including the heat transfer member. On the surface of an elastic body arranged between an LED and a heat sink, a heat conduction metal thin film that transfers heat generated in the LED to the heat sink is formed. The member may also include an electrical conduction metal film, whereby the member may serve as both a heat transfer member and as an electrical connector.
摘要:
A method for motion accounting and compensation while encoding allows improvement of the restored image quality. Image is a predicted frame in video sequence. Motion compensation is understood as an error residual signal compressing scheme, executed during video sequence encoding. According to the teachings of the current invention, errors are accounted for during encoding. Error accounting is subtracting the original image from the predicted frame. The error values are written to the output stream compactly with the minimum code length. The stored error values are added to the predicted frame during the decoding process. The method taught herein is applied for all the predicted frames from the video sequence, thereby allowing one to improve the quality of decompressed video film that was compressed with a significant compression ratio.
摘要:
A method of manufacturing an electronic component with a contact having a terminal section for brazing and a contact section includes steps that construct a contact base member of a material that is poorly wettable, forms a primer plating layer of a material that is poorly wettable to the weld brazing material on the base member, forms a finish plating layer of a material that is highly wettable to the weld brazing material on the primer plating layer, and selectively removes a portion of the finish plating layer to obtain an exposed region of the primer plating layer that serves as an arresting region for arresting the weld brazing material from creeping up and migrating along the highly wettable finish plating layer in brazing the terminal section to the brazing pad of a wiring board.
摘要:
An electronic component has an insert member embedded in a resin portion by an insert molding method, with a part of the insert member exposed at an outer surface of the resin portion. At least a part of the exposed portion of the insert member is depressed relative to the outer surface of the resin portion.
摘要:
New fused pyrimidines of the general formula (I): ##STR1## wherein the ring A is a pyridine ring which may be hydrogenated or a benzene ring which may be hydrogenated, X is an amino group or a hydroxyl group, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen, fluorine or a lower alkyl group, and --COOR.sup.5 and --COOR.sup.6 are independently a carboxyl group which may be esterified, and salts thereof have excellent anti-tumor effects, and they can be produced by the following reaction scheme: ##STR2## in which A is, X, R.sup.1 to R.sup.4, --COOR.sup.5 have the above meanings.
摘要翻译:通式(I)的新的稠合嘧啶:其中环+ E,crc / A /是可被氢化的吡啶环或可被氢化的苯环,X是氨基或 羟基,R1,R2,R3和R4独立地是氢,氟或低级烷基,-COOR5和-COOR6独立地是可被酯化的羧基,其盐具有优异的抗肿瘤效果,并且它们 可以通过以下反应方案制备:其中+ E,crc / A / is,X,R 1至R 4,-COOR 5具有上述含义的 + TR 。
摘要:
New fused pyrimidines of the general formula (I): ##STR1## wherein the ring .circle. A is a pyridine ring which may be hydrogenated or a benzene ring which may be hydrogenated, X is an amino group or a hydroxyl group, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen, fluorine or a lower alkyl group, and --COOR.sup.5 and --COOR.sup.6 are independently a carboxyl group which may be esterified, and salts thereof have excellent anti-tumor effects, and they can be produced by the following reaction scheme: ##STR2## in which .circle. A is, X, R.sup.1 to R.sup.4, --COOR.sup.5 have the above meanings.