Propizepine is a benzodiazepinone derivative patented by Laboratoires U.P.S.A. as antidepressive, antihistaminic, antianaphylactic, thymoanaleptic, antiserotonine, antispasmodic, and analgetic compound. Propizepine used in France for the treatment of depression in the 1970s.

Ganstigmine is an orally active, carbamate-based acetylcholinesterase (AChE) inhibitor developed for the treatment of Alzheimer's disease. It is a newer generation AChE than BChE inhibitor, derived from genserine, and has a long duration of action in vivo. Studies have shown it significantly prevented the progressive neuronal cell death due to growth factor deprivation and decreased neurodegeneration. Ganstigmine may be a suitable candidate for the treatment of cholinergic deficit in Alzheimer's disease because it was found to significantly increase basal extracellular concentrations of acetylcholine in rat prefrontal cortex, and does not affect the concentrations of serotonin, noradrenaline and levels of dopamine and metabolites. It is safe and well tolerated at 5–10 mg doses as the study conducted in Phase I randomized, double-blind, placebo-controlled clinical trial. It was dropped from phase II trials because of its adverse effects reported in some patients.

HaiHe Biopharma (Shanghai HaiHe Pharmaceutical) is developing simmitecan, an ester pro-drug of chimmitecan for the treatment of cancer. Simmitecan is in phase I development for solid tumours and colorectal cancer in China. Simmitecan (L-P) is a water-soluble ester prodrug of chimmitecan (L-2-Z) with potent anti-tumor activities in different experimental animals. Chimmitecan，a novel CPT derivative, exhibited potent antitumor activities both in vitro and in vivo by inhibiting topoisomerase I.

Metoxepin was developed as an antiemetic, neuroleptic and antihistamine agent. This drug has never been marketed.

Peficitinib (formerly known as ASP015K) is a pyrrolo[2,3-b]pyridine derivative orally administered once-daily JAK inhibitor in development for the treatment of Rheumatoid Arthritis. In preclinical studied Peficitinib inhibited JAK1 and JAK3 with IC50 of 3.9 and 0.7 nM, respectively. Peficitinib also inhibited IL-2-dependent T cell proliferation in vitro and STAT5 phosphorylation in vitro and ex vivo. Furthermore, Peficitinib dose-dependently suppressed bone destruction and paw swelling in an adjuvant-induced arthritis model in rats via prophylactic or therapeutic oral dosing regimens.In clinical trials, Peficitinib treatment prescribed at 50, 100 and 150 mg amounts each showed statistically significantly higher ACR20 response rates compared to the placebo and response rates increased up to the 150 mg dosage. Adverse events included neutropenia, headache, and abdominal pain. The treatment-emergent adverse events occurring more frequently in the Peficitinib group compared with the placebo group included diarrhea, nasopharyngitis, and increased serum creatine phosphokinase activity. No cases of serious infections were reported. Herpes zoster occurred in four patients (two each in the peficitinib 25 and 100 mg cohorts). The authors concluded that treatment with peficitinib as monotherapy for 12 weeks in Japanese patients with moderate to severe RA is efficacious and showed an acceptable safety profile.

PF-04217903 is a triazolopyrazine inhibitor of c-MET that displays anticancer chemotherapeutic and anti-metastatic activities. PF-04217903 inhibits cell proliferation, invasion, and migration as well as tumor growth in various cancer models. In animal models of pancreatic neuroendocrine tumors, this compound prevents lymph node metastasis. PF-04217903 had been in phase I clinical trials by Pfizer for the treatment of solid tumors. In 2011, the company discontinued the development of the compound.

PF-04217903 is a triazolopyrazine inhibitor of c-MET that displays anticancer chemotherapeutic and anti-metastatic activities. PF-04217903 inhibits cell proliferation, invasion, and migration as well as tumor growth in various cancer models. In animal models of pancreatic neuroendocrine tumors, this compound prevents lymph node metastasis. PF-04217903 had been in phase I clinical trials by Pfizer for the treatment of solid tumors. In 2011, the company discontinued the development of the compound.

Encenicline (EVP-6124; MT-4666) acts as a potent partial and selective agonist at alpha-7 nicotinic acetylcholine receptor. Encenicline significantly improved memory function in animal models. FORUM Pharmaceuticals (formerly EnVivo Pharmaceuticals) is developing encenicline for the treatment of cognition disorders such as schizophrenia and for Alzheimer's disease.

Dexamisole is the dextro-isomer of tetramisole, a broad spectrum anthelmintic. Dexamisole significantly improves mood and psychotonicity. In adrenergically innervated blood vessels dexamisole inhibits neuronal uptake of norepinephrine more than levamisole. Dexamisole antagonized the reserpine-induced hypothermia but was ineffective in the apomorphine-induced hypothermia in mice. It reduced ptosis produced by reserpine in mice but this effect was very weak. The effect of dexamisole on the amphetamine-induced hyperactivity depended upon the animal species. Dexamisole reduced the duration of immobility in the despair test in rats. It did not modify the 5-HTP-induced head twitch reaction in mice but produced stimulation of the hind limb flexor reflex in spinal rats. The latter effect was blocked by phenoxybenzamine but not by cyproheptadine and metergoline. Dexamisole also exerted a sedative and hypothermic effect. The above findings indicate that the pharmacological profile of dexamisole resembles in some respects that of tricyclic antidepressants; they also point out that this drug has a central noradrenergic activity.