Highly soluble antibacterially active organic salts of pyridobenzothiazines and their preparation process
申请人:MEDIOLANUM FARMACEUTICI S.P.A.
公开号:EP0252352A2
公开(公告)日:1988-01-13
New highly soluble antibacterially active salts of pyrido-benzothiazines with organic acids are described.
In particular, organic salts of 9-fluoro-10[N-(4ʹ-methyl)-piperazinyl]-7-oxo-2,3-dihydro-7H-pyrido[1,2,3 de][1,4]-benzothiazine-6-carboxylic acid are prepared with an acid chosen from the group consisting of methanesulphonic acid, ethanesulphonic acid, n-dodecanesulphonic acid, p-toluenesulphonic acid, 1-octadecanesulphonic acid, 2-chloro-ethanesulphonic acid, 2-bromo-ethanesulphonic acid, 3-hydroxy-propanesulphonic acid, citric acid, malonic acid, gluconic acid, malic acid, lactic acid and L-tartaric acid.
A new process is also described for preparing said salts from 2,3,4-trichloronitrobenzene, by way of a 2-fluoro-3-chloro-4-mercapto derivative of the nitrobenzene and cyclising the corresponding amino derivative.
本文描述了吡啶并噻嗪类化合物与有机酸的新型高溶解性抗菌活性盐。
正十二烷磺酸、对甲苯磺酸、1-十八烷磺酸、2-氯乙磺酸、2-溴乙磺酸、3-羟基丙磺酸、柠檬酸、丙二酸、葡萄糖酸、苹果酸、乳酸和 L-酒石酸。
还描述了一种新工艺,通过硝基苯的 2-氟-3-氯-4-巯基衍生物和相应的氨基衍生物环化,从 2,3,4-三氯硝基苯制备上述盐类。