There is provided a novel compound of the general formula (I), in which each R is hydrogen, aryl, C1-6 alkyl, trialkylsilyl, or acyl, each R1 is selected from hydroxy, C1-6 alkoxy and acyloxy; each R2 is H, C1-4 alkyl, trialkylsilyl or acyl; R3 is H or Me; and n is 0 to 5 any of the alkyl groups including alkyl groups in alkoxy, acyl and acyloxy groups which may be substituted by aryl, C1-4 alkyl, C1-4 alkoxy, hydroxyl, trialkylsiloxy or acyloxy groups. The compound is an analogue of epigalcatechin galate or epicatechin galate, with an amide bonding placed of the natural ester bond, with resistance to hydrolysis by esterase enzymes. The compounds may be used to modulate the resistance to β-lactam antibiotics of various infections, especially methicillin resistant staphylococcus aureus (MRSA). Pharmaceutical compositions containing the novel compounds and combinations of the novel compounds and β-lactam antibiotics are described.
提供一种新化合物,其通式为(I),其中每个R为氢,芳基,C1-6烷基,三烷基
硅基或酰基,每个R1从羟基,C1-6烷氧基和酰氧基中选择;每个R2为H,C1-4烷基,三烷基
硅基或酰基;R3为H或Me;n为0至5之间的任何烷基基团,包括可能被芳基,C1-4烷基,C1-4烷氧基,羟基,三烷基
硅氧基或酰氧基取代的烷基基团。该化合物是表现为
表儿茶素没食子酸或
表儿茶素没食子酸的类似物,具有天然酯键的酰胺键位,对
酯酶酶的
水解具有抗性。这些化合物可用于调节各种感染对β-内酰胺类抗生素的耐药性,特别是耐
甲氧西林金黄色葡萄球菌(MRSA)。描述了含有这种新化合物的药物组合和这些新化合物与β-内酰胺类抗生素的组合。