A pyridine derivative represented by the following formula: ##STR1## where R.sup.1 and R.sup.2 are as defined in the specification, or a salt thereof. These compounds directly or indirectly act on neuronal cells in vivo and are effective in the amelioration and curing of nerve disorders due to neuronal degeneration, such as, for example, traumatic symptoms and maladies, disorders induced by drugs such as alcohol and antineoplastic agents, inflammatory disorders, metabolic disorders observed in diabetes, and disorders due to idiopathic degeneration of peripheral nerves. These compounds are also effective for ameliorating and curing symptoms and maladies due to degeneration of central nerves, for example, Alzheimer's disease and cerebrovascular ischemia, Down's syndrome, Parkinson's disease, Huntington's chorea, diseases secondary to cerebral ischemia, cerebral infarction, intracerebral bleeding, head injuries, amnesia, and spinal neuropathy.

Taisho Pharmaceutical Co., Ltd.

Pyridine derivative

The present invention provides compounds of the general formula: ##STR1##as well as methods and pharmaceutical compositions utilizing these compounds for the inducement of temporary delay of urination or the treatment of disorders which may be remedied or alleviated by vasopressin agonist activity, including diabetes insipidus, nocturnal enuresis, nocturia, urinary incontinence, bleeding and coagulation disorders.

American Home Products Corporation

Tricyclic pyridine N-oxides vasopressin agonists

Disclosed are a compound of formula (I), a tautomer, an optical isomer or a pharmaceutically acceptable salt thereof, and a pharmaceutical composition containing the above-mentioned compounds. The above-mentioned compounds have the activity of inhibiting Xa factor positive effect, and can be used for the preparation of a medicament for preventing and/or treating diseases inhibiting Xa factor positive effect in case of low bleeding risk. ##STR00001##

pyridine/emorragia

Pyridine derivative

Tricyclic pyridine N-oxides vasopressin agonists

Pyrazolo[3,4-c]pyridine derivatives

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