摘要:
Provided is a process for preparing a cephem compound of the formula: ##STR1## wherein R.sup.3 is hydrogen or methoxy, R.sup.4 is hydrogen or a residue of a nucleophilic compound, R.sup.5 is hydroxyl or a protected hydroxyl, and R.sup.8 is hydrogen or halogen, or a pharmaceutically acceptable salt or ester thereof, which comprises introducing an acyl group of the formula: ##STR2## wherein R.sup.5 and R.sup.8 are as defined above into the amino group of the molecule of the formula: ##STR3## wherein R.sup.3 and R.sup.4 are as defined above or a salt or ester thereof.
摘要:
An antibacterial composition is provided consisting of a 7-[2-(2-aminothiazol)-4-yl)-2-(syn)-methoxyiminoacetamido]cephalosporin compound of the formula ##STR1## wherein R.sub.2 NH is amino or a protected amino group, n is an integer of 1 to 3 and R is a di-C.sub.1-3 alkylamino, carboxyl or sulfo group, or a pharmaceutically acceptable salt or ester thereof.
摘要:
The present invention is directed to a compound having antibacterial activity of the formula ##STR1## wherein R.sup.1 represents amino, protected amino, hydroxy or protected hydroxy;R.sup.4 represents heterocyclic thio wherein heterocyclic is a 5 to 6 membered hetero ring containing 1 to 4 hetero atoms from the group of oxygen, sulfur and nitrogen; andR.sup.5 is hydroxy or protected hydroxy, or a pharmaceutically acceptable salt thereof.
摘要:
Highly effective diuretic antihypertensives, i.e., sulfamoyl-2-benzofurancarboxylic acid derivatives which are classified as loop diuretics with less adverse side-effects and can be administered orally at a daily dosage of 0.5 mg to 200 mg or parenterally at 0.01 mg to 50 mg.
摘要:
Broad spectrum antibiotics are provided which are compounds of the formula: ##STR1## wherein -W-R is a residue of a nucleophilic compound and R.sup.5 is hydroxyl or protected hydroxyl, or a pharmaceutically acceptable salt or 4-carboxy ester which is the alkoxymethyl, .alpha.-alkoxyethyl, .alpha.-alkoxy-.alpha.-substituted methyl, alkylthiomethyl, acyloxymethyl or .alpha.-acyloxy-.alpha.-substituted methyl ester thereof.
摘要:
The disclosed invention relates to an adaption of a conventional conveyor driving roller whereby the driving force frictionally transmitted from a rotating shaft to the article conveying roller is maintained even under conditions wherein oil or water enters between the frictionally engaging surfaces. Specifically, a pressure plate is provided at one end face of the roller which is spring biased for frictionally engaging that roller end face. Provision is made for adjustment of the degree of compression of the pressure plate biasing spring so that the degree of frictional force between the pressure plate and the roller end face may be varied.
摘要:
3-Tertiary ammoniomethyl-7-beta-[alpha-(hydroxy or protected hydroxy)imino-alpha-(2-aminothiazol-4-yl)acetamido]-3-cephem-4-carboxylic acid, pharmaceutically acceptable salt or 4-carboxy ester is provided which is a broad spectrum antibiotic.
摘要:
Novel cephem compounds of the formula; ##STR1## wherein R.sup.1 represents amino or hydroxyl group which may be protected, R.sup.2 represents amino or hydroxyl group or a group convertible into these groups, R.sup.3 represents hydrogen or methoxy group or a group convertible into methoxy group, R.sup.4 represents hydrogen or a residue of a nucleophilic compound and R.sup.8 represents hydrogen or a halogen, or a pharmaceutically acceptable salt or ester thereof, have strong antibiotic properties against a wide variety of microorganisms including gram-positive bacteria as well as gram-negative ones, especially by oral administration and can be used as therapeutic agent for various bacterial infections of animals including human beings.Also disclosed are novel thiazolylacetic acid compounds of the formula: ##STR2## wherein R.sup.1 represents amino, protected amino, hydroxyl or protected hydroxyl, R.sup.2 represents amino, protected amino, hydroxyl, protected hydroxyl or the group ##STR3## represents a group of the formula ##STR4## wherein R.sup.5 represents hydroxyl or lower alkoxy and R.sup.8 represents hydrogen or a halogen, or a salt, an ester or a reactive derivative thereof, and to processed for preparing these compounds. These latter compounds are useful as intermediates in the preparation of the novel cephem compounds.
摘要:
A compound of the formula: ##STR1## wherein R.sup.1 stands for a halogenoethoxycarbonylamino and R.sup.2 stands for hydrogen or a halogen, is an important intermediate for producing a cephalosporin derivative of the formula: ##STR2## wherein R.sup.3 stands for methyl, acetoxymethyl, carbamoyloxymethyl, an alkoxymethyl, an alkylthiomethyl, 2-carboxy-1-ethenyl, or a heterocyclic thiomethyl, R.sup.5 stands for hydrogen or methoxy and R.sup.2 has the same meaning as defined before, which is active against various pathogenic microorganisms even at a low concentration.
摘要:
A solid-state imaging device includes a semiconductor substrate having a photoelectric conversion region, a first microlens provided above the semiconductor substrate, covering the photoelectric conversion region, and having a convex upper surface, for gathering external light into the photoelectric conversion region, and a second microlens provided above the first microlens and having a convex upper surface, for gathering external light into the first microlens. A flat surface is provided at a top portion of one of the first and second microlenses and immediately above the photoelectric conversion region.