摘要:
Rifamycin derivatives having the following structure of general formula I (both hydroquinone and corresponding quinone (C1-C4) forms): or its salts, hydrates or prodrugs thereof; wherein a preferred R1 comprises hydrogen or acetyl and a prefered R2 comprises hydrogen, methyl or other lower alkyls; wherein asterik (*) denotes the carbon bearing the chiral center, wherein absolute configuration is assigned as R or S. Methods of preparation of the aforementioned rifamycin derivatives are also described. The compounds exhibit antimicrobial activities, including activities against drug-resistant microorganisms.
摘要:
Novel rifamycin derivatives of formula I (both hydroquinone and corresponding quinone (C1-C4) forms): or their salts, hydrates or prodrugs thereof, wherein: a preferred R comprises hydrogen, acetyl; L is a linker, a preferred linker group elements selected from any combination of 1 to 5 groups shown FIG. 1, provided L is not wherein R1 is H, methyl or alkyl. The inventive compounds exhibit valuable antibiotic properties. Formulations having these compounds can be used in the control or prevention of infectious diseases in mammals, both humans and non-humans. In particular, the compounds exhibit a pronounced antibacterial activity, even against multiresistant strains of microbes.
摘要:
The present invention relates to rifamycin 3-iminomethylenyl (—CH═N—) derivatives having antimicrobial activities, including activities against drug-resistant microorganisms. The claimed rifamycin derivative has a rifamycin moiety covalently linked to a linker through an iminomethylenyl (—CH═N—) group at the C-3 carbon of the rifamycin moiety and the linker is, in turn, covalently linked to a quinolone structure or its pharmacophore within the DNA gyrase and topoisomerase IV inhibitor family. The inventive rifamycins are novel and exhibit activity against both rifampin and ciprofloxacin-resistant microorganisms.
摘要:
Rifamycin derivatives having antimicrobial activities, including activities against drug-resistant microorganisms are claimed in this invention. The inventive rifamycin derivatives are uniquely designed in that they have a rifamycin moiety covalently linked to a linker group through the C-3 carbon of the rifamycin moiety and the linker is, in turn covalently linked to a therapeutic moiety or antibacterial agent/pharmacophore. The therapeutic moiety can be a quinolone, an oxazolidinone, a macrolide, an aminoglycoside, a tetracycline core or a structure/pharmacophore associated with an antibacterial agent.
摘要:
Disclosed are novel tricyclic compounds represented by the formula (1.0): and a pharmaceutically acceptable salt or solvate thereof. The compounds are useful for inhibiting farnesyl protein transferase. Also disclosed are pharmaceutical compositions comprising compounds of formula 1.0. Also disclosed are methods of treating cancer using the compounds of formula 1.0.
摘要:
The present invention relates to metabolites of tricyclic amides, and structurally related compounds, represented by the structural formula (I): and pharmaceutically acceptable isomers, salts, solvates or esters of the compound of formula (I), wherein: R1 is selected from the group consisting of H and ═O; R2-R5 can be the same or different, each being independently selected from the group consisting of H, —OH, halide, —NH2 and ═O; and, the combination solid-dashed lines independently represent either single bonds or double bonds, wherein the number of combination solid-dashed lines that are double bonds is not greater than 2, and when, the double bonds are not adjacent, and when 0, one of R1-R5 is not H. Also disclosed are methods of treatment of proliferative diseases and methods for inhibiting the abnormal growth of cells, and for inhibiting farnesyl protein transferase using the novel compounds.
摘要翻译:本发明涉及由结构式(I)表示的三环酰胺的代谢物和结构相关的化合物:和式(I)化合物的药学上可接受的异构体,盐,溶剂化物或酯,其中:R 1 SUB>选自H和-O; R 2 -R 5可以相同或不同,各自独立地选自H,-OH,卤化物,-NH 2, SUB>和-O; 并且,组合虚线独立地表示单键或双键,其中双键的组合实线的数目不大于2,当双键不相邻时,当为0时, R 1〜R 5之一不是H.还公开了治疗增殖性疾病的方法和抑制细胞异常生长的方法,以及用于抑制法呢基蛋白转移酶 使用新型化合物。