【结 构 式】 |
【药物名称】SR-58611, SR-58611A 【化学名称】N-[7-(Ethoxycarbonylmethoxy)-1,2,3,4-tetrahydronaphth-2(S)-yl]-2(R)-(3-chlorophenyl)-2-hydroxyethanamine hydrochloride 【CA登记号】107758-28-1 (oxalate salt;non-specified stereoch.), 107758-27-0 (undefined stereoch.) 【 分 子 式 】C22H27Cl2NO4 【 分 子 量 】440.37079 |
【开发单位】Sanofi-synthélabo (Originator) 【药理作用】Antidepressants, Antidiabetic Drugs, Antiobesity Drugs, ENDOCRINE DRUGS, METABOLIC DRUGS, Mood Disorders, Treatment of, PSYCHOPHARMACOLOGIC DRUGS, Treatment of Diabetic Complications, Treatment of Nutritional Disorders, Type 2 Diabetes Mellitus, Agents for, beta3-Adrenoceptor Agonists |
合成路线1
The reaction of 7-methoxy-2-tetralone (I) with benzamide in refluxing toluene gives N-(7-methoxy-3,4-dihydronpahthalen-2-yl)benzamide (II), which is enantioselectively hydrogenated with H2 over a chiral Ru or Rh catalyst yielding the chiral benzamide (III). The hydrolysis of (III) with methanesulfonic acid in acetic acid at 160 C affords the chiral 7-methoxy-1,2,3,4-tetrahydronaphthalen-2(S)-amine (IV) , which is treated with 48% HBr affording 7-hydroxy-1,2,3,4-tetrahydronaphthalen-2(S)-ylamine (V). The protection of the amino group of (V) with Boc2O and triethylamine gives the carbamate (VI), which is condensed with ethyl 2-bromoacetate (VII) by means of K2CO3 yielding 2-[7(S)-(tert-butoxycarbonylamino)-5,6,7,8-tetrahydronaphthalen-2-yloxy]acetic acid ethyl ester (VIII). The deprotection of (VIII) with TFA affords 2-(7(S)-amino-5,6,7,8-tetrahydronaphthalen-2-yloxy]acetic acid ethyl ester (IX), which is finally condensed with the chiral 2(R)-(3-chlorophenyl)oxirane (X) in hot DMS. The chiral intermediate 7-methoxy-1,2,3,4-tetrahydronaphthalen-2(S)-amine (IV) can also by obtained by optical resolution of the racemic mixture (rac)-(IV) by means of (R)-(-)-mandelic acid.
【1】 Devocelle, M.; et al.; Alternative synthesis of the chiral atypical beta-adrenergic phenylethanolaminotetraline agonist SR58611A using enantioselective hydrogenation. Tetrahedron Lett 1999, 40, 24, 4551. |
【2】 Cecchi, R.; et al.; Synthesis and beta-adrenergic activity of atypical beta-adrenergic phenylethanolaminotetralin stereoisomers. Eur J Med Chem 1994, 29, 4, 259. |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
40592 | Benzamide | 55-21-0 | C7H7NO | 详情 | 详情 | |
(rac)-(IV) | 32818 | 7-methoxy-1,2,3,4-tetrahydro-2-naphthalenylamine; 7-methoxy-1,2,3,4-tetrahydro-2-naphthalenamine | C11H15NO | 详情 | 详情 | |
(I) | 24999 | 7-methoxy-3,4-dihydro-2(1H)-naphthalenone | 4133-34-0 | C11H12O2 | 详情 | 详情 |
(II) | 32816 | N-(7-methoxy-3,4-dihydro-2-naphthalenyl)benzamide | C18H17NO2 | 详情 | 详情 | |
(III) | 32817 | N-[(2S)-7-methoxy-1,2,3,4-tetrahydro-2-naphthalenyl]benzamide | C18H19NO2 | 详情 | 详情 | |
(IV) | 32820 | (2S)-7-methoxy-1,2,3,4-tetrahydro-2-naphthalenylamine; (2S)-7-methoxy-1,2,3,4-tetrahydro-2-naphthalenamine | C11H15NO | 详情 | 详情 | |
(V) | 32819 | (7S)-7-amino-5,6,7,8-tetrahydro-2-naphthalenol | C10H13NO | 详情 | 详情 | |
(VI) | 32821 | tert-butyl (2S)-7-hydroxy-1,2,3,4-tetrahydro-2-naphthalenylcarbamate | C15H21NO3 | 详情 | 详情 | |
(VII) | 16640 | Ethyl 2-bromoacetate; Ethyl bromoacetate | 105-36-2 | C4H7BrO2 | 详情 | 详情 |
(VIII) | 32822 | ethyl 2-([(7S)-7-[(tert-butoxycarbonyl)amino]-5,6,7,8-tetrahydro-2-naphthalenyl]oxy)acetate | C19H27NO5 | 详情 | 详情 | |
(IX) | 32823 | ethyl 2-[[(7S)-7-amino-5,6,7,8-tetrahydro-2-naphthalenyl]oxy]acetate | C14H19NO3 | 详情 | 详情 | |
(X) | 15271 | (R)-(+)-3-Chlorostyrene oxide; (2R)-2-(3-Chlorophenyl)oxirane | 62600-71-9 | C8H7ClO | 详情 | 详情 |
合成路线2
The chiral intermediate 2(R)-(3-chlorophenyl)oxirane (X) has been obtained as follows: The bromination of 3'-chloroacetophenone (XI) with Br2 in acetic acid gives the 3'-chlorophenacyl bromide (XII), which is treated with dimethylamine in toluene yielding 3'-chloro-2-(dimethylamino)acetophenone (XIII). The hydrogenation of (XIII) with H2 over a chiral Rh catalyst affords the (R)-alcohol (XIV), which is finally treated with NaOH in chloroform to provide the intermediate oxirane (X).
【1】 Devocelle, M.; et al.; Alternative synthesis of the chiral atypical beta-adrenergic phenylethanolaminotetraline agonist SR58611A using enantioselective hydrogenation. Tetrahedron Lett 1999, 40, 24, 4551. |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
(X) | 15271 | (R)-(+)-3-Chlorostyrene oxide; (2R)-2-(3-Chlorophenyl)oxirane | 62600-71-9 | C8H7ClO | 详情 | 详情 |
(XI) | 15268 | m-chloroacetophenone; 1-(3-chlorophenyl)-1-ethanone | 99-02-5 | C8H7ClO | 详情 | 详情 |
(XII) | 32824 | 2-bromo-1-(3-chlorophenyl)-1-ethanone | C8H6BrClO | 详情 | 详情 | |
(XIII) | 32825 | 1-(3-chlorophenyl)-2-(dimethylamino)-1-ethanone | C10H12ClNO | 详情 | 详情 | |
(XIV) | 32826 | (1R)-1-(3-chlorophenyl)-2-(dimethylamino)-1-ethanol | C10H14ClNO | 详情 | 详情 |
合成路线3
The chiral intermediate 7-methoxy-1,2,3,4-tetrahydronaphthalen-2(S)-amine (IV) has also been obtained as follows: The Friedel Crafts condensation of anisole (XV) with N-trifluoroacetyl-L-aspartic acid anhydride (XVI) by means of AlCl3 in dichloromethane gives 4-(4-methoxyphenyl)-4-oxo-2(S)-(trifluoro-acetamido)butyric acid (XVII), which is hydrogenated with H2 over Pd/C in ethanol/H2SO4 yielding 4-(4-methoxyphenyl)-2(S)-(trifluoroacetamido)butyric acid (XVIII). The cyclization of (XVIII) by its reaction with PCl5, followed by a treatment with SnCl4 provides the tetralone (XIX), which is hydrogenated as before to give N-(7-methoxy-1,2,3,4-tetrahydronaphthalen-2(S)-yl)trifluoro-acetamide (XX). Finally, this compound is deacetylated with HCl in ethanol to provide the chiral intermediate the amine (IV).
【1】 Devocelle, M.; et al.; Alternative synthesis of the chiral atypical beta-adrenergic phenylethanolaminotetraline agonist SR58611A using enantioselective hydrogenation. Tetrahedron Lett 1999, 40, 24, 4551. |
【2】 Cecchi, R.; et al.; Synthesis and beta-adrenergic activity of atypical beta-adrenergic phenylethanolaminotetralin stereoisomers. Eur J Med Chem 1994, 29, 4, 259. |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
(IV) | 32820 | (2S)-7-methoxy-1,2,3,4-tetrahydro-2-naphthalenylamine; (2S)-7-methoxy-1,2,3,4-tetrahydro-2-naphthalenamine | C11H15NO | 详情 | 详情 | |
(XV) | 18410 | N-[(3S)-2,5-dioxotetrahydro-3-furanyl]-2,2,2-trifluoroacetamide | 777-33-3 | C6H4F3NO4 | 详情 | 详情 |
(XVI) | 23767 | Methoxybenzene; Methyl phenyl ether; Anisole | 100-66-3 | C7H8O | 详情 | 详情 |
(XVII) | 32827 | (2S)-4-(4-methoxyphenyl)-4-oxo-2-[(2,2,2-trifluoroacetyl)amino]butyric acid | C13H12F3NO5 | 详情 | 详情 | |
(XVIII) | 32828 | (2S)-4-(4-methoxyphenyl)-2-[(2,2,2-trifluoroacetyl)amino]butyric acid | C13H14F3NO4 | 详情 | 详情 | |
(XIX) | 32829 | 2,2,2-trifluoro-N-[(2S)-7-methoxy-1-oxo-1,2,3,4-tetrahydro-2-naphthalenyl]acetamide | C13H12F3NO3 | 详情 | 详情 | |
(XX) | 32830 | 2,2,2-trifluoro-N-[(2S)-7-methoxy-1,2,3,4-tetrahydro-2-naphthalenyl]acetamide | C13H14F3NO2 | 详情 | 详情 |