Highly Antibacterial Active Aminoacyl Penicillin Conjugates with Acylated Bis-Catecholate Siderophores Based on Secondary Diamino Acids and Related Compounds
摘要:
New acylated bis-catecholates and 1,3-benzoxazine-2,4-dione derivatives based on secondary diamino acids (N-(aminoalkyl)glycines, N-aminopropyl-alanine, and N-aminopropyl-4-amino-valeric acid), on N-(aminoalkyl)aminomethyl benzoic acids, on N-(aminoalkyl)aminomethyl phenoxyacetic acids, or on 3,5-diaminobenzoic acid were synthesized as artificial siderophores. The corresponding diamino acids were obtained from the diamines and oxocarboxylic acids by catalytic hydrogenation. The acylated bis-catecholates and 1,3-benzoxazine-2,4-diones were coupled with ampicillin or amoxicillin to new siderophore aminoacylpenicillin conjugates. These conjugates exhibited very strong antibacterial activity in vitro against Gram-negative bacterial pathogens including Pseudomonas aeruginosa, Stenotrophomonas maltophilia, Escherichia coli, Klebsiella pneumoniae, and Serratia marcescens. The ampicillin derivative 7b (HKI 9924154) and the corresponding amoxicillin derivative 8 (HKI 9924155) represent the most active compounds. The conjugates can use bacterial iron siderophore uptake routes to penetrate the Gram-negative outer membrane permeability barrier. This was demonstrated by assays with mutants deficient in components of the iron transport systems. New siderophore penicillin V conjugates with the siderophore component attached to the phenyl ring of penicillin V are inactive against these Gram-negative bacteria.
Benzoxazinedione derivatives, method of producing them and uses thereof
申请人:Gruenenthal GmbH
公开号:US06013647A1
公开(公告)日:2000-01-11
This invention relates to new benzoxazinedione derivatives corresponding to the formula I: ##STR1## wherein R.sup.1 =H or carboxyalkyl, R.sup.2 =H, alkyl or phenyl, and R.sup.3 represents different acid groups derived from amino acids, dipeptides and hydrazones or conjugates thereof with active ingredients, e.g. antibiotics. The compounds may be present as free acids, in the form of their salts or as readily cleavable esters. The compounds according to the invention constitute heterocyclically protected catechol derivatives and are effective as siderophores against gram-negative bacterial strains, particularly against Pseudomonads and strains of E. coli and Salmonella. In the form of their conjugates with active ingredients, e.g. antibiotics (as "siderophore-antibiotic conjugates"), they can transport the latter into bacterial cells and can improve or extend the antibacterial effect thereof, sometimes even in relation to bacterial strains which are resistant to other .beta.-lactams. In addition, said compounds, as potential prodrug forms for iron chelating agents, are suitable for use against diseases which are caused by a disorder of the iron metabolism. The invention can be employed in pharmaceutical research and in the pharmaceutical industry, and in agriculture.
Neue Benzoxazindionderivate, Verfahren zu ihrer Herstellung und ihre Verwendung
申请人:Grünenthal GmbH
公开号:EP0863139A1
公开(公告)日:1998-09-09
Die Erfindung betrifft neue Benzoxazindionderivate der allgemeinen Formel I, und deren Konjugate mit Wirkstoffen, z B. Antibiotika. Die erfindungsgemäßen Verbindungen stellen heterocyclisch geschützte Catecholderivate dar und sind bei gramnegativen Bakterienstämmen, insbesondere Pseudomonaden, E.coli- und Salmonella-Stämmen, als Siderophore wirksam. Sie können in Form ihrer Konjugate mit Wirkstoffen, z. B. Antibiotika (als "Siderophor-Antibiotikakonjugate") diese in Bakterienzellen einschleusen und deren antibakterielle Wirksamkeit verbessern bzw. erweitern, z. T. auch bei gegenüber anderen β-Laktamen resistenten Bakterienstämmen. Außerdem sind die genannten Verbindungen als potentielle Prodrugformen für Eisenchelatoren geeignet zur Verwendung bei Erkrankungen, die auf einer Störung des Eisenstoffwechsels beruhen. Die Anwendung der Erfindung kann in der pharmazeutischen Forschung, Industrie und Landwirtschaft erfolgen.
Formel I:
wobei R1 = H oder Carboxyalkyl, R2 = H, Alkyl oder Phenyl und R3 = verschiedene, von Aminosäuren, Dipeptiden und Hydrazonen abgeleitete Säuregruppen bzw. deren Konjugate mit Wirkstoffen, z. B. Antibiotika bedeuten. Die genannten Verbindungen können als freie Säuren, in Form ihrer Salze oder als leicht spaltbare Ester vorliegen.
本发明涉及通式 I 的新苯并噁嗪二酮衍生物及其与活性物质(如抗生素)的共轭物。本发明的化合物是杂环保护的儿茶酚衍生物,在革兰氏阴性细菌菌株,特别是假单胞菌、大肠杆菌和沙门氏菌菌株中作为嗜苷酸盐有效。以它们与活性物质(如抗生素)共轭的形式(作为 "嗜苷酸盐-抗生素共轭物"),它们可以将这些活性物质引入细菌细胞,改善或增强其抗菌功效,在某些情况下,甚至可以改善对其他β-内酰胺类药物产生抗药性的细菌菌株的抗菌功效。此外,上述化合物还可作为铁螯合剂的潜在原药形式,用于治疗基于铁代谢紊乱的疾病。本发明可用于医药研究、工业和农业。
式 I:
其中 R1 = H 或羧烷基,R2 = H、烷基或苯基,R3 = 由氨基酸、二肽和酰肼或它们与活性物质(如抗生素)的共轭物衍生的各种酸基。上述化合物可以游离酸、盐或易裂解酯的形式存在。
Benzoxazindionderivate, Verfahren zu ihrer Herstellung und ihre Verwendung
申请人:Grünenthal GmbH
公开号:EP0863139B1
公开(公告)日:2001-03-28
PATHOGEN DETECTION
申请人:University of Notre Dame Du Lac
公开号:US20160319322A1
公开(公告)日:2016-11-03
A device for detecting bacteria in a sample, comprising: a substrate having a surface; and a plurality of Fe(III)-bound or Fe(III)-binding siderophores specific to the bacteria and covalently attached to the surface; wherein the siderophores are selected from the group consisting of one or more natural siderophores, siderophores having one or more of the formulas described herein, or combination thereof. Methods of detection are also provided.
REDUCTION-TRIGGERED ANTIBACTERIAL SIDEROMYCINS
申请人:MILLER Marvin J
公开号:US20160368878A1
公开(公告)日:2016-12-22
A compound is provided, comprising: an Fe(III)-binding or an Fe(III)-bound siderophore; one or more optional linker covalently bound to the siderophore; a drug; and an Fe(III) to Fe(II) reduction triggered linker bound to the drug and the linker or, if no linker is present, then bound to the drug and the siderophore. Compositions and methods including the compound are also provided.