トラボプロスト

効能

抗緑内障薬, プロスタグランジンF受容体作動薬

商品名

トラバタンズ (ノバルティスファーマ)

説明

Travoprost was launched in the US as Travatan?, an ophthalmic solution (0.004%) administered topically for the treatment of elevated intraocular hypertension (lOP) through open-angle glaucoma, a common optic neuropathy and a leading cause of blindness. Travoprost is the isopropyl ester of (+)-fluprostenol, a new prostaglandin derivative belonging to the PGF_2α, analog class. This compound can be prepared in 8 steps from a bicyclic lactone aldehyde by a Wittig alkylidenation followed, after 2 ketonic reductions, by a lactol opening to prostenoic acid while protecting and deprotecting appropriately. Travoprost is a full agonist of FP receptors with a greater affinity than PGF_2α, (K₁ = 52 nM). Pharmacologic studies in rabbits treated daily for a week demonstrated a significant increase of the microvascular optic nerve head blood flow without significant alterations in the systemic flow. In several placebo-controlled clinical studies with hundreds of patients suffering from open-angle glaucoma or ocular hypertension, travoprost (1 to 4 pm daily) dose-dependently reduced lOP (by about 30% at 4 pm); it was shown equal or superior to latanoprost, another prostaglandin analog (5 pm daily) or the adrenergic ~-blocker timolol (500 pm bid). In addition, travoprost was safe and well tolerated with a low incidence of conjunctival hyperaemia.

化学的特性

Colorless Oil

使用

Travoprost is a selective FP prostaglandin receptor agonist used to treat glaucoma (1,2).

定義

ChEBI: The isopropyl ester of prostaglandin F2alpha in which the pentyl group is replaced by a 3-(trifluoromethyl)phenoxymethyl group. A synthetic analogue of prostaglandin F2alpha, ophth lmic solutions of travoprost are used as a topical medication for controlling the progression of open-angle glaucoma and ocular hypertension, by reducing intraocular pressure. It is a pro-drug; the isopropyl ester group is hydrolysed by esterases in the co nea to the biologically active free acid, fluprostenol.

一般的な説明

Travoprost (Travatan and Travatan-Z) is supplied asa 2.5- or 5.0-mL sterile 0.004% ophthalmic solution in a4.0- or 7.5-mL size container. Travoprost is claimed to bethe most potent and FP-specific analog in this product category. Cautions and side effects are similar to those givenpreviously.