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【结 构 式】 
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【药物名称】Betaxolol hydrochloride, MCI-144, SL-75212, Betoptima, Kerlong, Betoptic, Kerlone 【化学名称】(±)-1-[4-[2-(Cyclopropylmethoxy)ethyl]phenoxy]-3-(isopropylamino)-2-propanol hydrochloride 【CA登记号】63659-19-8, 63659-18-7 (free base) 【 分 子 式 】C18H30ClNO3 【 分 子 量 】343.8977 |
【开发单位】Alcon (Originator), Mitsubishi Pharma (Not Determined), Sanofi-synthélabo (Licensee) 【药理作用】Angina pectoris, Treatment of, Antiglaucoma Agents, CARDIOVASCULAR DRUGS, Hypertension, Treatment of, OCULAR MEDICATIONS, Ophthalmic Drugs, Treatment of Disorders of the Coronary Arteries and Atherosclerosis, beta1-Adrenoceptor Antagonists |
合成路线1
The condensation of ethyl p-hydroxyphenylacetate (I) with benzyl chloride (II) by means of sodium ethoxide in refluxing ethanol gives ethyl p-(benzyloxy)phenylacetate (III), which is reduced with LiAlH4 in THF to 2-(p-benzyloxyphenyl)ethanol (IV). The etherification of (IV) with cyclopropyl bromide (A) by means of NaH in hot DMF affords 4-(cyclopropylmethoxyethyl)-1-benzyloxybenzene (V), which is debenzylated by hydrogenation with H2 and Pd/C in methanol giving rise to p-(cyclopropylmethoxyethyl)phenol (VI). The condensation of (VI) with epichlorohydrin (B) by means of NaOH in water yields 1-[p-(cyclopropylmethoxyethyl)phenoxy]-2,3-epoxypropane (VII), which is treated with isopropylamine (C) and finally with HCl in ether.
| 【1】 Manoury, P.M.J.; et al. (Sanofi-Synthelabo ); Phenol ethers. DE 2649605; FR 2330383; GB 1515978; JP 52085146; US 4252984 . |
| 【2】 Hillier, K.; Castaner, J.; Serradell, M.N.; Blancafort, P.; Betaxolol hydrochloride. Drugs Fut 1979, 4, 12, 867. |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (B) | 10146 | Epichlorohydrin; 2-(Chloromethyl)oxirane | 106-89-8 | C3H5ClO | 详情 | 详情 |
| (A) | 22277 | Cyclopropyl bromide; 1-(Bromomethyl)cyclopropane | 7051-34-5 | C4H7Br | 详情 | 详情 |
| (I) | 24994 | Ethyl 2-(4-hydroxyphenyl)acetate | 17138-28-2 | C10H12O3 | 详情 | 详情 |
| (II) | 19171 | 1-(Chloromethyl)benzene; Benzyl chloride | 100-44-7 | C7H7Cl | 详情 | 详情 |
| (III) | 28637 | Ethyl 2-[4-(benzyloxy)phenyl]acetate; p-(Benzyloxy)phenylacetate | C17H18O3 | 详情 | 详情 | |
| (IV) | 33328 | 2-(p-Benzyloxyphenyl)ethanol; 2-[4-(Benzyloxy)phenyl]-1-ethanol | C15H16O2 | 详情 | 详情 | |
| (V) | 33329 | 4-(Cyclopropylmethoxyethyl)-1-benzyloxybenzene; 1-(Benzyloxy)-4-[2-(cyclopropylmethoxy)ethyl]benzene; Benzyl 4-[2-(cyclopropylmethoxy)ethyl]phenyl ether | C19H22O2 | 详情 | 详情 | |
| (VI) | 33330 | 4-[2-(Cyclopropylmethoxy)ethyl]phenol; p-(Cyclopropylmethoxyethyl)phenol | C12H16O2 | 详情 | 详情 | |
| (VII) | 33331 | 2-([4-[2-(Cyclopropylmethoxy)ethyl]phenoxy]methyl)oxirane; 1-[p-(Cyclopropylmethoxyethyl)phenoxy]-2,3-epoxypropane; 4-[2-(Cyclopropylmethoxy)ethyl]phenyl 2-oxiranylmethyl ether | C15H20O3 | 详情 | 详情 | |
| (C) | 23933 | 2-Propanamine; Isopropylamine | 75-31-0 | C3H9N | 详情 | 详情 |