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【结 构 式】

【分子编号】16972

【品名】(5aR,11bS)-2-propyl-4,5,5a,6,7,11b-hexahydrobenzo[f]thieno[2,3-c]quinoline-9,10-diol

【CA登记号】

【 分 子 式 】C18H21NO2S

【 分 子 量 】315.43628

【元素组成】C 68.54% H 6.71% N 4.44% O 10.14% S 10.17%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(IX)

ABT-431 can be obtained by two related ways: 1) The reduction of 6,7-dimethoxy-1-tetralone (I) with NaBH4 in ethanol followed by dehydration with p-toluenesulfonic acid in refluxing toluene gives 6,7-dimethoxy-1,2-dihydronaphthalene (II), which is nitrated with tetranitromethane and pyridine in acetone yielding 6,7-dimethoxy-3-nitro-1,2-dihydronaphthalene (III). The condensation of (III) with N-tert-butyl-5-propylthiophene-2-carboxamide (IV) by means of butyllithium in THF affords the trans racemic (V), which is reduced with Zn/HCl to the corresponding amine (VI). The reaction of (VI) with 10% H2SO4 in refluxing methanol gives a mixture of the decarboxylated compound (VII) and the cyclization compound (VIII). The enantiomeric separation of (VIII) by chiral chromatography in a Chiracel(TM) OD column affords the (5aR,11bS)-enantiomer, which is demethylated with BBr3 in dichloromethane to the chiral diol (IX), and finally acetylated with acetyl chloride in trifluoroacetic acid and treated with ethereal HCl. 2) The condensation of (III) with 5-allyl-N-tert-butylthiophene-2-carboxamide (X) by means of butyllithium in THF affords the trans racemic (XI), which by successive treatments with Zn/HCl, hydrogenation with H2 over Pd/C, p-toluenesulfonic acid in refluxing toluene and finally with BH3 in THF, is converted into the previously reported tetracyclic racemic compound (VIII). N-tert-Butyl-5-propylthiophene-2-carboxamide (IV) has been obtained by condensation of 2-propylthiophene (XII) with tert-butyl isocyanate (XIII) by means of butyllithium in THF.

1 Merlos, M.; Graul, A.; Castañer, J.; ABT-431. Drugs Fut 1997, 22, 8, 821.
2 Michaelides, M.R.; Hong, Y.; DiDomenico, S. Jr.; Bayburt, E.K.; Asin, K.E.; Britton, D.R.; Lin, C.W.; Shiosaki; Substituted hexahydrobenzo[f]thieno[c]quinolines as dopamine D1-selective agonists: Synthesis and biological evaluation in vitro and in vivo. J Med Chem 1997, 40, 11, 1585-99.
3 Michaelides, M.R.; Hong, Y.; DiDomenico, S. Jr.; Asin, K.E.; Britton, D.R.; Lin, C.W.; Williams, M.; Shiosaki, K.; (5aR,11bS)-4,5,5a,6,7,11b-Hexahydro-2-propyl-3-thia-5-azacyclopent-1-ena[c]phenanthrene-9,10-diol(A-86929): A potent and selective dopamine D1 agonist. J Med Chem 1995, 38, 18, 3445-7.
4 Michaelides, M.R.; Hong, Y. (Abbott Laboratories Inc.); Tetracyclic cpds. as dopamine agonists. EP 0690863; JP 1996508487; US 5597832; WO 9422858 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
rac-(VIII) 16971 (rac)-(5aR*,11bS*)-10-methoxy-2-propyl-4,5,5a,6,7,11b-hexahydrobenzo[f]thieno[2,3-c]quinolin-9-yl methyl ether; (rac)-(5aR*,11bS*)-9,10-dimethoxy-2-propyl-4,5,5a,6,7,11b-hexahydrobenzo[f]thieno[2,3-c]quinoline C20H25NO2S 详情 详情
(I) 16964 6,7-dimethoxy-1-tetralone; 6,7-dimethoxy-3,4-dihydro-1(2H)-naphthalenone 13575-75-2 C12H14O3 详情 详情
(II) 16965 3-methoxy-5,6-dihydro-2-naphthalenyl methyl ether; 6,7-dimethoxy-1,2-dihydronaphthalene C12H14O2 详情 详情
(III) 16966 3-methoxy-6-nitro-7,8-dihydro-2-naphthalenyl methyl ether; 6,7-dimethoxy-3-nitro-1,2-dihydronaphthalene C12H13NO4 详情 详情
(IV) 16967 N-(tert-butyl)-5-propyl-2-thiophenecarboxamide C12H19NOS 详情 详情
(V) 16968 N-(tert-butyl)-3-[(1S,2R)-6,7-dimethoxy-2-nitro-1,2,3,4-tetrahydro-1-naphthalenyl]-5-propyl-2-thiophenecarboxamide C24H32N2O5S 详情 详情
(VI) 16969 3-[(1S,2R)-2-amino-6,7-dimethoxy-1,2,3,4-tetrahydro-1-naphthalenyl]-N-(tert-butyl)-5-propyl-2-thiophenecarboxamide C24H34N2O3S 详情 详情
(VII) 16970 (1S,2R)-6,7-dimethoxy-1-(5-propyl-3-thienyl)-1,2,3,4-tetrahydro-2-naphthalenylamine; (1S,2R)-6,7-dimethoxy-1-(5-propyl-3-thienyl)-1,2,3,4-tetrahydro-2-naphthalenamine C19H25NO2S 详情 详情
(VIII) 65064 (5aR,11bS)-9,10-dimethoxy-2-propyl-4,5,5a,6,7,11b-hexahydrobenzo[f]thieno[2,3-c]quinoline; (5aR,11bS)-10-methoxy-2-propyl-4,5,5a,6,7,11b-hexahydrobenzo[f]thieno[2,3-c]quinolin-9-yl methyl ether C20H25NO2S 详情 详情
(IX) 16972 (5aR,11bS)-2-propyl-4,5,5a,6,7,11b-hexahydrobenzo[f]thieno[2,3-c]quinoline-9,10-diol C18H21NO2S 详情 详情
(X) 16973 5-allyl-N-(tert-butyl)-2-thiophenecarboxamide C12H17NOS 详情 详情
(XI) 16974 5-allyl-N-(tert-butyl)-3-[(1S,2R)-6,7-dimethoxy-2-nitro-1,2,3,4-tetrahydro-1-naphthalenyl]-2-thiophenecarboxamide C24H30N2O5S 详情 详情
(XII) 16975 2-propylthiophene; Thiophene, 2-propyl- 1551-27-5 C7H10S 详情 详情
(XIII) 16976 tert-butylisocyanate; tert-butyl isocyanate; 2-isocyanato-2-methylpropane 1609-86-5 C5H9NO 详情 详情
Extended Information