摘要:
Il est décrit un procédé de fabrication, par fermentation, de céphalosporine C, selon lequel la solution de fermentation est filtrée par l'intermédiaire d'un dispositif de filtration ou type à courant transversal. La quantité de filtrat extraite du fermentateur peut être recyclée.
摘要:
Die Erfindung betrifft ein mit Enzymen beschichtetes Trägermaterial, das aus D-Aminosäureoxidase und einem Trägermaterial besteht. Der Träger ist ein vernetztes Copolymerisat, welches aus Vinylacetat- und/oder Vinylalkohol-Einheiten und Einheiten eines Vernetzungsmittels besteht. Der mit D-Aminosäureoxidase beschichtete Träger kann auch zusätzlich mit Katalase beschichtet sein. Das erfindungsgemäße Trägermaterial kann zur Herstellung von Arzneimitteln eingesetzt werden.
摘要:
Antibacterial 7-formylaminocephalosporin compounds of formula (1) or salt thereof wherein
R' represents a carboxy group or an aminocarboxymethyl group
R 2 represents a hydrogen atom or an esterifying group, and
R 3 represents a group having a 5- 6-membered heterocyclic ring, and processes for producing them. The compounds show antibacterial activity and are useful intermediates for other cephalosporin compounds having antibacterial activity.
摘要翻译:式(I)的抗菌7-甲酰氨基头孢菌素化合物或其盐... 其中... R 1表示羧基或氨基羧基甲基... R 2表示氢原子或酯化基, 和R 3表示具有5〜6元杂环的基团,其制造方法。 该化合物显示出抗菌活性,并且是具有抗菌活性的其它头孢菌素化合物的有用中间体。
摘要:
A compound of the formula: wherein R 1 stands for hydrogen or formylamino, R 2 is a residue of amino acid or peptide selected from the group consisting of serine and alanine or hydrogen, R 3 stands for -NH-C (=NH) -NH 2 or -CH 2 NH 2 , or its salt, which can be produced by cultivating a microorganism belonging to the genus Xanthomonas, is useful as a therapeutic agent against infectious disease caused by bacteria.
摘要:
A compound of the formula: wherein R' stands for hydrogen or formyamino, R 2 stands for hydrogen, alanyl or alanyl-alanyl, or its salt, which can be produced by cultivating a microorganism belonging to the genus Lysobacter, is useful as a therapeutic agent against infectious disease caused by bacteria.
摘要:
The present invention relates to a method for concentrating a dilute aqueous solution of a β-lactam antibiotic which is readily susceptible to heat, by subjecting a dilute aqueous solution of a β-lactam antibiotic, said solution containing 2 to 20% (v/v) of a lower alcohol, to concentration by means of a permeable membrane made of poly-(ether/amide) or polybenzimidazolone.
摘要:
Deacetylcephalosporin C is prepared by contacting cephalosporin C with an acetylesterase produced by a strain belonging to the genus Auresbasideum or a mutant thereof. Deacetylcephalosporin C is known as a valuable intermediate in syntheses of therapeutically-useful cephalosporin compounds.
摘要:
Deacetylcephalosporin C is prepared by contacting cephalosporin C with an acetylesterase produced by a strain belonging to the genus Auresbasideum or a mutant thereof. Deacetylcephalosporin C is known as a valuable intermediate in syntheses of therapeutically-useful cephalosporin compounds.
摘要:
The interseparation of desacetyl-cephalosporin C, desacetoxy-cephalosporin C and cephalosporin C can be accomplished by adsorbing these available cephalosporins on activated carbon and effecting a fractional elution thereof with water containing 0 to 20 percent (V/V) of an organic solvent or solvents.