Definition
ChEBI:Ciprofloxacin hydrochloride (anhydrous) is the anhydrous form of the monohydrochloride salt of ciprofloxacin. It has a role as an EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor, an antibacterial drug, a topoisomerase IV inhibitor and an antiinfective agent. It contains a ciprofloxacin.
Brand name
Ciloxan (Alcon); Cipro (Bayer); Proquin (Esprit).
Biological Activity
ciprofloxacin (hydrochloride) is a fluoroquinolone antibiotic that has antimicrobial and immunomodulatory activities [1].ciprofloxacin functions by inhibiting dna gyrase and topoisomerase iv, the enzymes responsible for negative supercoiling of chromosomes and dna strand separation, thus blocking initiation of bacterial replication. topoisomerase iv is the primary target of ciprofloxacin in s. aureus [2].ciprofloxacin (hydrochloride) is a fluoroquinolone antibiotic that acts as an antimicrobial and immunomodulatory agent. in b6d2f1/j mice received radiation combined injury (ci), ciprofloxacin significantly reduced pro-inflammatory cytokine and chemokine concentrations (il-6 and kc), and enhanced il-3 production. cip also inhibited ci-induced apoptosis and autophagy in ileal villi, systemic bacterial infection, and iga production [1]. ciprofloxacin (hydrochloride) had been approved by fda for management of postexposure inhalational anthrax. in animals after exposure to aerosolized b. anthracis, ciprofloxacin significantly improved survival rate. ciprofloxacin inhibited the growth of b. anthracis with mic90 of 0.06 μg/ml. in the usamriid rhesus monkey model of inhalational anthrax, the maximum concentration (cmax) of ciprofloxacin was 1.74 μg/ml and the minimum concentration (cmin) was 0.17 μg/ml [3].
Synthesis
The preparation method of ciprofloxacin HCl, its step is as follows:
a) cyclopropyl carboxylic acid is added in the organic solvent, and the adding piperazine, reacted 3～8 hours down as acid binding agent with alkali at 60～120 ℃, the monitoring cyclopropyl carboxylic acid is residual less than 2% o'clock termination reaction, stirring is cooled to 0～30 ℃, leaves standstill suction filtration;
b) add water and hydrochloric acid in the products therefrom toward a) step, under agitation be warming up to molten clearly, add activated carbon decolorizing, filtered while hot, and transfer filtrate pH to 2～4 with hydrochloric acid, and the cooling crystallization filters, rinsing, and drying makes ciprofloxacin HCl.
storage
4°C, protect from light
References
[1]. fukumoto r, cary lh, gorbunov nv, et al. ciprofloxacin modulates cytokine/chemokine profile in serum, improves bone marrow repopulation, and limits apoptosis and autophagy in ileum after whole body ionizing irradiation combined with skin-wound trauma. plos one. 2013;8(3):e58389.
[2]. drlica k, zhao x. dna gyrase, topoisomerase iv, and the 4-quinolones. microbiol mol biol rev. 1997 sep;61(3):377-92.
[3]. meyerhoff a, albrecht r, meyer jm, et al. us food and drug administration approval of ciprofloxacin hydrochloride for management of postexposure inhalational anthrax. clin infect dis. 2004 aug 1;39(3):303-8.
