FLURITHROMYCIN, an erythromycin fluorine derivative, was isolated from the fermentation broth of Streptomyces erythraeus ATCC 31772. It is used as an antibacterial drug. The spectrum of activity of FLURITHROMYCIN is almost identical to that of erythromycin but it is more stable to acid.

Moxonidine is a second-generation, centrally acting antihypertensive drug with a distinctive mode of action. Moxonidine activates I1-imidazoline receptors (I1-receptors). Imidazoline I1-receptor agonism represents a new mode of antihypertensive action to inhibit peripheral alpha-adrenergic tone by a central mechanism. Adrenaline, noradrenaline and renin levels are reduced, a finding consistent with central inhibition of sympathetic tone. Moxonidine acts centrally to reduce peripheral sympathetic activity, thus decreasing peripheral vascular resistance. In patients with mild to moderate hypertension, moxonidine reduces blood pressure (BP) as effectively as most first-line antihypertensives when used as monotherapy and is also an effective adjunctive therapy in combination with other antihypertensive agents. It improves the metabolic profile in patients with hypertension and diabetes mellitus or impaired glucose tolerance, is well tolerated, has a low potential for drug interactions and may be administered once daily in most patients. Moxonidine is a good option in the treatment of patients with mild to moderate hypertension, particularly as adjunctive therapy in patients with the metabolic syndrome.

Lymecycline is a tetracycline broad-spectrum antibiotic marketed by the pharmaceutical company Galderma. It is approximately 5,000 times more soluble than tetracycline base and is unique amongst tetracyclines in that it is absorbed by an active transport process across the intestinal wall, making use of the same fast and efficient mechanism by which carbohydrates are absorbed. Lymecycline's side effects can include rash, headache, diarrhoea, ulcerative colitis, nausea, vomiting, dermatitis, dysphasia, inflammation of the liver, hypersensitive reactions, and visual disturbances. When taken for a long period of time, it can cause reflux oesophagitis.

Quinbolone is an anabolic steroid, developed by Parke-Davis, which was previously marketed in Italy. Quinbolone is a cyclopentenyl ether derivative of Boldenone (B675100) which is also its active metabolite. Quinbolone shows weak androgenic activity. Quinbolone didn`t have liver toxicity.

Loprazolam is a hypnotic drug which stimulates GABA-A receptors. Due to its hypnotic activity the drug is used to treat short-term sleep disordes.

Minaprine, a psychotropic drug, which was effective in the treatment of various depressive states. This drug was withdrawn because of the serious side effect. It was found, that minaprine inhibited the following enzymes, acetylcholinesterase and monoamine oxidase (MOA) A. It also binds to dopamine D1 and D2 receptors. Experiments on rodents also have revealed that minaprine suppressed the inhibitory effect of hydroxytryptamine (5-HT) on dopamine (DA) release via the inhibition of 5-HT binding at the 5-HT2 receptor on the nerve terminal.

Levosimendan (Simdax) is a novel intravenous agent that exerts inotropic effects through sensitization of myofilaments to calcium and vasodilator effects by binding to cardiac troponin C in a calcium-dependent manner. It also has a vasodilatory effect, by opening adenosine triphosphate (ATP)-sensitive potassium channels in vascular smooth muscle to cause smooth muscle relaxation. Unlike other calcium sensitizing compounds, the binding of levosimendan is highly dependent on the intracellular concentration of calcium, such that calcium sensitivity is enhanced only when the calcium level is elevated. Levosimendan is licensed for the treatment of decompensated heart failure in many countries but not in North America. This drug also passed phase III clinical trials for the prevention of low cardiac output syndrome in pediatric patients after open heart surgery.

Ipriflavone (chemical structure: 7-isopropoxyisoflavone), derived from the soy isoflavone, daidzein, holds great promise for osteoporosis prevention and treatment. Ipriflavone (IP) was discovered in the 1930s but has only recently begun to be embraced by the medical community in this country. Over 150 studies on safety and effectiveness, both animal and human, have been conducted in Italy, Hungary, and Japan. As of 1997, 2,769 patients had been treated a total of 3,132 patient years. Preliminary studies have pointed to its effectiveness in the treatment of other conditions involving bone pathology, including Paget’s disease, hyperparathyroidism, renal osteodystrophy, and tinnitus due to otosclerosis. Ipriflavone appears to have several mechanisms of action, all of which enhance bone density, making them seemingly superior to many of the other treatments available for osteoporosis prevention and treatment. IP also inhibits osteoclastic activity (motility and resorptive activity) by modulating intracellular free calcium. IP’s bone-forming mechanisms include stimulation of cell proliferation and maturation of osteoblasts by inhibiting calcium influx into osteoblasts and phosphoinositide hydrolysis. Despite similarities to estrogen, IP possesses no intrinsic estrogenic activity, but does potentiate estrogen. Importantly, IP does not change bone mineral composition or crystalline structure. A clinical trial reported in 2001 that it was not effective in prevention or treatment of osteoporosis.

Anxiolytic drug, Gedocarnil [SH 530, ZK 113315], was undergoing phase I clinical trials with Schering AG in Germany as a potential nootropic agent. However it`s development for the treatment of cognition disorders was discontinued.

Pazufloxacin is a fused tricyclic quinolone derivative that has a broad spectrum of anti-bacterial activity. Pazufloxacin inhibits bot DNA gyrase and topoisomerase IV and has shown in vitro activity against Staphylococcus aureus, Staphylococcus epidermidis, Escherichia coli, Klebsiella, Enterobacter, Hafnia, Citrobacter, Proteus, Providencia, Serratia, Shigella, Salmonella, Aeromonas and Yersinia. The drug is used for the treatment of infectious diseases such as abdominal infections, genital infections, urinary tract infections, respiratory tract infections, etc.