摘要:
The present invention relates to novel amino glycoside salts of sucrose-octa-O-sulfonic acid having the general formula (I): ([sucrose-octa-O-sulfonic acid8-]-[R-(NH¿3?+)x]y-Mzn+), wherein (x . y) + (z . n) = 8, x . y ⊂ N|[4 « x . y « 8], N is the set of natural numbers, x ⊂ Z|[1 « x « 6], Z is the set of integers, z ⊂ N|[0 « z « 4], n ⊂ Z|[1 « n « 3], wherein R is the sugar moiety of an amino glycoside and M¿z?n+ is a metal ion or M¿z?n+ designates NH¿4?+.
摘要:
The invention provides 5-deoxy-5,5-difluoro derivatives of aminoglycoside antibiotics of neamine, kanamycin A, kanamycin B, gentamicin and seldomycin, each synthesized as a novel compound, and also 1-N-(a-hydroxy- m-aminoalkanoyl) derivatives synthesized from the newly obtained 5-deoxy-5,5-difluorokanamycins A and B and analogs thereof. The 5-deoxy-5,5-difluoro derivatives thus obtained have antibacterial activities superior or substantially equivalent to those of the amino-glycoside antibiotics from which they are derived and further have a remarkably improved median lethal dose (LD so ) when intravenously administered to mice and a remarkably reduced toxicity on mammals.
摘要:
The N-phosphorylation of basic nitrogenous drug compounds to produce pro-drugs with enhanced water solubility or lipid solubility, or reduced toxicity, is disclosed. Drugs containing amine, amidine, guanidine, isourea, isothiourea and biguanide functions may be converted to such pro-drugs. The pro-drugs are hydrolyzed in the body, regenerating the original drugs with the release of a salt of phosphoric acid.
摘要:
Le procédé ci-décrit de rendement élevé permettant de convertir 3,2',6'-tri-N-acétyle sisomicine en nétilmicine comprend les étapes de silylation du matériau de départ dans les positions 5,2'' et éventuellement dans la position 4'', de convertion des substituants 1-amino en un substituant 1-N-imino, de conversion de l'imino en un éthylamino, d'enlèvement de la protection du composé et de récupération de nétilmicine. Sont également décrits de nouveaux composés intermédiaires.
摘要:
The present invention relates to antimicrobial agents. Some embodiments include compounds, compositions, methods of preparation, and methods of treatment using new aminoglycosides and aminoglycoside derivatives.
摘要:
A high yielding process for converting 3,2',6'-tri-N-acetyl sisomicin to netilmicin comprising the step of silylating the starting material at the 5,2'' positions, and optionally at the 4'' position, converting the 1-amino substituents to a 1-N-imino substituent, converting the imino to an ethylamino, deprotecting the compound and recovering netilmicin. Also disclosed are novel intermediate compounds.
摘要:
An improved process for converting gentamicin B to isepamicin comprising forming 3,6′-di-N-formylgentamicin B, acylating the 1-amino group with an N-protected (S)-isoserine compound and removing all the blocking groups under conditions which result in high yields of isepamicin. A novel formylating agent, 2-formylmercaptobenzothiazole, and intermediate compounds are also disclosed.