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【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
      [7-[2-(3-Chlorophenyl)-2(R)-hydroxyethylamino]-5,6,7,8-tetrahydro-2(S)-naphthalenyloxy]acetic acid ethyl ester 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
Extended Information