Repositioning Candidate Details
| Candidate ID: | R0133 |
| Source ID: | DB00373 |
| Source Type: | approved |
| Compound Type: | small molecule |
| Compound Name: | Timolol |
| Synonyms: | (S)-1-(tert-butylamino)-3-[(4-morpholin-4-yl-1,2,5-thiadiazol-3-yl)oxy]propan-2-ol; Timolol anhydrous |
| Molecular Formula: | C13H24N4O3S |
| SMILES: | [H][C@](O)(CNC(C)(C)C)COC1=NSN=C1N1CCOCC1 |
| Structure: |
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| DrugBank Description: | Timolol is a nonselective beta-adrenergic antagonist given in an eye drop solution to reduce intraocular pressure, or pressure in the eyes. It is also used in tablet form as a drug to treat hypertension. Timolol was first approved by the FDA in 1978. This drug is marketed by several manufacturers and is an effective agent for the management of conditions such as open-angle glaucoma and hypertension. |
| CAS Number: | 26839-75-8 |
| Molecular Weight: | 316.42 |
| DrugBank Indication: | Ophthalmic timolol is indicated for the treatment of increased intraocular pressure in patients with ocular hypertension or open-angle glaucoma. The oral form of this drug is used to treat high blood pressure. In certain cases, timolol is used in the prevention of migraine headaches. |
| DrugBank Pharmacology: | Timolol, when administered by the ophthalmic route, rapidly reduces intraocular pressure. When administered in the tablet form, it reduces blood pressure, heart rate, and cardiac output, and decreases sympathetic activity.. This drug has a fast onset of action, usually occurring within 20 minutes of the administration of an ophthalmic dose. Timolol maleate can exert pharmacological actions for as long as 24 hours if given in the 0.5% or 0.25% doses. |
| DrugBank MoA: | Timolol competes with adrenergic neurotransmitters for binding to beta(1)-adrenergic receptors in the heart and the beta(2)-receptors in the vascular and bronchial smooth muscle. This leads to diminished actions of catecholamines, which normally bind to adrenergic receptors and exert sympathetic effects leading to an increase in blood pressure and heart rate. Beta(1)-receptor blockade by timolol leads to a decrease in both heart rate and cardiac output during rest and exercise, and a decrease in both systolic and diastolic blood pressure. In addition to this, a reduction in reflex orthostatic hypotension may also occur. The blockade of beta(2) receptors by timolol in the blood vessels leads to a decrease in peripheral vascular resistance, reducing blood pressure. The exact mechanism by which timolol reduces ocular pressure is unknown at this time, however, it likely decreases the secretion of aqueous humor in the eye. According to one study, the reduction of aqueous humor secretion may occur through the decreased blood supply to the ciliary body resulting from interference with the active transport system or interference with prostaglandin biosynthesis. |
| Targets: | Beta-1 adrenergic receptor antagonist; Beta-2 adrenergic receptor antagonist; Lysozyme |
| Inclusion Criteria: | Indication associated |
| Diseases ID | DO ID | Disease Name | Definition | Class | |
|---|---|---|---|---|---|
| I12 | 10763 | Hypertension | An artery disease characterized by chronic elevated blood pressure in the arteries. https://en.wikipedia.org/wiki/Hypertension, https://www.ncbi.nlm.nih.gov/pubmed/24352797 | disease of anatomical entity/ cardiovascular system disease/vascular disease/ artery disease | Details |