A series of C-7 thio-substituted 1-cyclopropyl-1, 4-dihydro-4-oxoquinoline-3-carboxylic acids were prepared and tested for their antibacterial activity. Structure-activity relationships associated with the C-5 and C-7 substituents were discussed. Among the C-7 substituents including alkylthio, arylthio, heteroarylthio, and cyclic aminothio groups, a 2-aminoethylthio group was the best for enhancing in vitro antibacterial activity. The C-5 variants increased activity in the order OH
制备并测试了一系列 C-7 硫代 1-环丙基-1,4-二氢-4-氧代喹啉-3-羧酸的抗菌活性。讨论了与 C-5 和 C-7 取代基相关的结构-活性关系。在 C-7 取代基(包括烷基硫代、芳基硫代、杂芳基硫代和环状硫代氨基)中,2-氨基乙基硫代最能提高体外抗菌活性。C-5 变体提高活性的顺序为 OH
Process for the production of sulfonic esters
申请人:——
公开号:US20030176711A1
公开(公告)日:2003-09-18
Sulfonic acid ester derivatives represented by the general formula (4) or (5) are produced by reacting an amino alcohol derivative represented by the general formula (1) or (2) with an organic sulfonyl halide represented by the general formula (3), in a mixed solvent composed of an aprotic organic solvent and water in the presence of a non-water-prohibiting inorganic base. This procedure can be carried out in a simple, easy, safe and economical manner while reducing the load on the environment.
1
Wherein n represents an integer of 0 to 5, A represents a phenyl group, which may be substituted, R represents a methanesulfonyl, ethanesulfonyl, p-toluenesulfonyl or p-nitrobenzenesulfonyl group and X represents a chloride, bromine or iodine atom.
通式(4)或(5)所代表的磺酸酯衍生物是通过在无水有机溶剂和水的混合溶剂中,使用不会禁止水的无机碱,将通式(1)或(2)所代表的氨基醇衍生物与通式(3)所代表的有机磺酰卤反应而制备而成。该过程可以简单、容易、安全、经济地进行,同时减轻环境负担。其中,n表示0至5的整数,A表示苯基,可以是取代基,R表示甲磺酰基、乙磺酰基、对甲苯磺酰基或对硝基苯磺酰基,X表示氯、溴或碘原子。
US6794519B2
申请人:——
公开号:US6794519B2
公开(公告)日:2004-09-21
US6864372B2
申请人:——
公开号:US6864372B2
公开(公告)日:2005-03-08
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