4-(Ethylamino)-2-(3-methoxypropyl)-1,1-dioxo-1,2,3,4-tetrahydro-1lambda~6~-thieno[3,2-e][1,2]thiazine-6-sulfonamide

개요Brinzolamide is a carbonic anhydrase inhibitor developed by Alcon (now Novartis) as a treatment for primary and open-angle glaucoma and ocular hypertension. It was First approval in the United States in 1998 under the trade name Azopt. It is the second of this class after dorzolamide (1995). Brinzolamide was approved as a generic medication in the United States in November 2020.Brinzolamide is a white powder commercially formulated as a 1% ophthalmic suspension to reduce intraocular pressure (IOP). In patients with primary open-angle glaucoma or ocular hypertension, brinzolamide produced significant reductions in IOP and showed less ocular discomfort than dorzolamide.

용도Brinzolamide is a sulfonamide and carbonic anhydrase inhibitor with specific affinity for carbonic anhydrase II. Following topical ocular administration, brinzolamide inhibits carbonic anhydrase II, an enzyme that is responsible for the movement of sodium and fluid transport in the eye. This inhibition leads to a decrease in aqueous humor secretion, probably by slowing the formation of bicarbonate ions, and results in a reduction in intraocular pressure. Brinzolamide is used to treat increased pressure in the eye caused by open-angle glaucoma.

용도Brinzolamide has been used as a melanin binding compound or drug in melanin binding assays. It has also been used as a carbonic anhydrase inhibitor (CAI).

일반 설명Brinzolamide is a small molecular weight compound that has an ability to bind melanin. This drug is used in ocular therapy.

Brinzolamide synthesis method: using thiophene as raw material, 3-acetyl-2,5-dichlorothiophene (4) is obtained by chlorination and acetylation, and 4 is reacted with sodium benzyl sulfide to obtain 6,6, which is chlorinated and ammoniated. Chemical and oxidation reactions "one-pot" synthesis of 7, Carbon-based α-hydrobromination of 7 with Pyridinium tribromide gives 9,9 is asymmetrically reduced under the action of (+)-Ipc2BCl to obtain 11, which is then subjected to N-alkylation and sulfonamidation to generate (S)-3,4-dihydro-4-hydroxy-2-(3-methoxyl propyl)-2H-thieno[3,2-e]-1,2-thiazine-6-sulfonamide-1,1-dioxide, the sulfonamide group was protected with trimethyl orthoacetate to give 15 , first introduce p-toluenesulfonyl group and then replace it with ethylamino group, and remove the sulfonamide group protecting group to obtain brinzolamide. The synthesis of intermediate 4 in this route is convenient, and each step of the reaction does not require column chromatography, and the total yield is 13.4%.Graphical Synthetic Routes of Olanzapine