Sibopirdine (EXP921) is a cognition enhancing agent structurally related to linopirdine that was in preclinical development with Bristol-Myers Squibb in the USA as a treatment of Alzheimer's disease. EXP921 was a potential drug candidate for the improvement of cognitive performance in patients with Alzheimer's-type dementia. It has been shown to improve cognitive performance in rodent and primate models of learning and memory. EXP921 was observed to increase the depolarization induced release of acetylcholine, dopamine, and, to a lesser extent, serotonin using slices from the rat cerebral cortex, hippocampus, and caudate nucleus.

Camiglibose is a glucopyranoside and inhibitor of alpha-glucosidase with antihyperglycemic activity patented by Merrell Dow Pharmaceuticals. In rats, a single oral dose of Camiglibose administered simultaneously with 2 g/kg body wt sucrose resulted in a dose dependent reduction in the area under the 0- to 3-h glycemic response curve, A reduction in the glycemic response to sucrose was accompanied by reduced insulin secretion. Camiglibose was more effective against a sucrose load in streptozocin-administered rats than in control rats and was as effective after 16 daily doses as after a single dose. Doses that reduced the glycemic response to carbohydrate did not inhibit liver lysosomal a-glucosidase activity or cause lysosomal glycogen accumulation. In cynomolgus monkeys, an oral dose of 1 mg/kg Camiglibose reduced the glycemic and insulin responses to sucrose

Meglucycline is an antibiotic.

Coleneuramide (MCC-257) is a cholestane amide conjugate originated in Mitsubishi Pharma Corporation. It has been shown to enhance the effect of nerve growth factor (NGF) on cell survival and on tyrosine phosphorylation in PC12 cells. Coleneuramide is believed to act directly on TrkA receptor. In preclinical models, MCC-257 rescued clinical sign and pathological changes in rats after exposure to environmental neurotoxin methylmercury and protected against dysfunction of the peripheral nervers in hyperglycemic animals. The compound was investigated in phase 2 clinical study for the treatment of diabetic polyneuropathy, but no results were reported.

Cefetecol is a broad-spectrum cephemcarboxylate derivative with antibacterial activity patented by British pharmaceutical company Glaxo Group Ltd.

Dimefadane is the indanamine derivative. It was developed as analgesic.

Anisodamine is a naturally occurring atropine derivative that has been isolated, synthesized and characterized by scientists in the People's Republic of China. Anisodamine is a non-specific cholinergic antagonist. Anisodamine has been shown to interact with and disrupt liposome structure which may reflect its effects on cellular membranes. Experimental evidence implicates anisodamine as an anti-oxidant that may protect against free radical-induced cellular damage. Its cardiovascular properties include depression of cardiac conduction and the ability to protect against arrhythmia induced by various agents. Anisodamine is a relatively weak alpha(1) adrenergic antagonist which may explain its vasodilating activity. Its anti-thrombotic activity may be a result of inhibition of thromboxane synthesis. Numerous therapeutic uses of anisodamine have been proposed including treatment of septic shock, various circulatory disorders, organophosphorus (OP) poisoning, migraine, gastric ulcers, gastrointestinal colic, acute glomerular nephritis, eclampsia, respiratory diseases, rheumatoid arthritis, obstructive jaundice, opiate addiction, snake bite and radiation damage protection. The primary therapeutic use of anisodamine has been for the treatment of septic shock. Several mechanisms have been proposed to explain its beneficial effect though most mechanisms are based upon the assumption that anisodamine ultimately acts by an improvement of blood flow in the microcirculation. Preliminary studies suggest another important therapeutic use of anisodamine is for the treatment of OP poisoning. Anisodamine has been employed therapeutically since 1965 in the People’s Republic of China primarily to improve blood flow in circulatory disorders such as septic shock, disseminated intravascular coagulation (DIC) and as an antidote to organophosphate poisoning.

Colimecycline is an antibiotic of the tetracycline group.

Pantenicate was developed as an antihyperlipidemic agent. Information about the further development of this drug is not available.

LAGATIDE, a heptapeptide, is a short C-terminal analog of sorbin. It has proabsorptive and antisecretory effect in the different parts of the intestine. It was under clinical evaluation for the treatment of chronic diarrhea.