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【结 构 式】

【分子编号】17936

【品名】8,11-dichloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine

【CA登记号】

【 分 子 式 】C14H11Cl2N

【 分 子 量 】264.15348

【元素组成】C 63.66% H 4.2% Cl 26.84% N 5.3%

与该中间体有关的原料药合成路线共 4 条

合成路线1

该中间体在本合成路线中的序号:(III)

Benzocycloheptapyridinone (I) was reduced to alcohol (II) with NaBH4 in MeOH. Subsequent treatment of (II) with SOCl2 in toluene gave the tricyclic chloride (III). Finally, alkylation of N-acetyl piperazine (IV) with chloride (III) in the presence of Et3N in boiling THF provided the title compound.

1 Piwinski, J.J.; Wong, J.K.; Green, M.J.; Kaminski, J.J.; Colizzo, F.; Albanese, M.M.; Ganguly, A.K.; Billah, M.M.; Anthes, J.C.; West, R.E. Jr; Dual antagonists of platelet activating factor and histamine 3. Synthesis, biological activity and conformational implications of substituted N-acyl-bis-arylcycloheptapiperazines. Bioorg Med Chem Lett 1998, 8, 24, 3469.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 16504 8-chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-one; 8-Chloro-10,11-dihydro-4-aza-5H-dibenzo[a,d]cycloheptan-5-one 31251-41-9 C14H10ClNO 详情 详情
(II) 17935 8-chloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol C14H12ClNO 详情 详情
(III) 17936 8,11-dichloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine C14H11Cl2N 详情 详情
(IV) 20674 N-Acetyl piperazine; 1-(1-piperazinyl)-1-ethanone 13889-98-0 C6H12N2O 详情 详情

合成路线2

该中间体在本合成路线中的序号:(III)

Ketone (I) was reduced with sodium borohydride in methanol to alcohol (II), which was then converted into chloride (III) on treatment with thionyl chloride in cooled toluene. Alkylation of piperazine (IV) with chloride (III) in the presence of triethylamine gave V. Finally, piperazine (V) was condensed with 4-pyridylacetic acid (VI) in the presence of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (DEC), 1-hydroxybenzotriazole (HOBt), and N-methylmorpholine in DMF to afford the target amide.

1 Lesur, B.; et al.; New deoxynojirimycin derivatives as potent inhibitors of intestinal alpha-glucohydrolases. Bioorg Med Chem Lett 1997, 7, 3, 355-360.
2 Lesur, B.; Ducep, J.-B.; Danzin, C. (Merrell Pharmaceuticals, Inc.); Novel nojirimycin derivs.. EP 0453692; EP 0454580; JP 1993086072; US 5252587; US 5536732 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 16504 8-chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-one; 8-Chloro-10,11-dihydro-4-aza-5H-dibenzo[a,d]cycloheptan-5-one 31251-41-9 C14H10ClNO 详情 详情
(II) 17935 8-chloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol C14H12ClNO 详情 详情
(III) 17936 8,11-dichloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine C14H11Cl2N 详情 详情
(IV) 10355 Diethylenediamine; Piperazine 110-85-0 C4H10N2 详情 详情
(V) 17938 8-chloro-11-(1-piperazinyl)-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine C18H20ClN3 详情 详情
(VI) 17883 2-(4-pyridinyl)acetic acid 28356-58-3 C7H7NO2 详情 详情

合成路线3

该中间体在本合成路线中的序号:(XIII)

(R)-Piperazine-2-carboxylic acid, obtained by resolution of the racemic piperazine (VIII) with (-)-camphorsulfonic acid, was regioselectively protected with Boc-ON at the 4-N atom, yielding the tert-butyl carbamate (IX). Subsequent treatment with cyclohexyl chloroformate (X) produced the bis-carbamate (XI), which was further subjected to selective Boc group cleavage under acidic conditions. The resultant piperazine (XII) was condensed with the tricyclic alkyl chloride (XIII), producing a diastereomeric mixture of N-alkylated adducts from which the required isomer (XIV) was isolated by flash chromatography. Finally, coupling of acid (XIV) with the intermediate amine (VII) by means of EDC and HOBt gave rise to the title compound.

1 Guzi, T.; Taveras, A.G.; Ferreira, J.A.; Desai, J.A.; Wang, J.J.S.; Lalwani, T.; Alvarez, C.; Afonso, A.; Girijavallabhan, V.M.; Mallams, A.K.; Doll, R.J.; Weinstein, J.; Cooper, A.B.; Chao, J.; Rane, D.F.; Aki, C.J.; Kelly, J.M. (Schering Corp.); Tricyclic farnesyl protein transferase inhibitors. EP 1140902; WO 0037459 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(VII) 51590 N-benzyl-3-(4-methyl-1H-imidazol-1-yl)-1-propanamine; N-benzyl-N-[3-(4-methyl-1H-imidazol-1-yl)propyl]amine C14H19N3 详情 详情
(VIII) 25933 2-piperazinecarboxylic acid; Piperazine-2-carboxylic acid C5H10N2O2 详情 详情
(IX) 51591 (2R)-4-(tert-butoxycarbonyl)-2-piperazinecarboxylic acid C10H18N2O4 详情 详情
(X) 51592 Carbonochloridic acid, cyclohexyl ester; Cyclohexyl chloroformate 13248-54-9 C7H11ClO2 详情 详情
(XI) 51593 (2R)-4-(tert-butoxycarbonyl)-1-[(cyclohexyloxy)carbonyl]-2-piperazinecarboxylic acid C17H28N2O6 详情 详情
(XII) 51594 (2R)-1-[(cyclohexyloxy)carbonyl]-2-piperazinecarboxylic acid C12H20N2O4 详情 详情
(XIII) 17936 8,11-dichloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine C14H11Cl2N 详情 详情
(XIV) 51595 (2R)-4-[(11S)-8-chloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-yl]-1-[(cyclohexyloxy)carbonyl]-2-piperazinecarboxylic acid C26H30ClN3O4 详情 详情

合成路线4

该中间体在本合成路线中的序号:(V)

(R)-Piperazinecarboxylic acid (I) is sequentially protected with 2-(t-butoxycarbonyloxy)imino-2-phenylacetonitrile to produce the 4N-Boc-piperazine (II), and then with cyclohexyl chloroformate, yielding the 1N-cyclohexyl carbamate (III). Selective N-Boc group cleavage in (III) under acidic conditions provides piperazine (IV). This is condensed with the tricyclic chloride (V) to furnish, after chromatographic separation of the isomers, the required intermediate (VI).

1 Cooper, A.B.; Girijavallabhan, V.M.; Mallams, A.K.; Doll, R.J.; Kelly, J.M.; Rane, D.F.; Taveras, A.G.; Guzi, T.; Strickland, C.; Chao, J. (Schering Corp.); Farnesyl protein transferase inhibitors. EP 1140904; JP 2002533335; WO 0037458 .
2 Cooper, A.B.; Girijavallabhan, V.M.; Mallams, A.K.; Doll, R.J.; Kelly, J.M.; Rane, D.F.; Taveras, A.G.; Guzi, T.; Strickland, C.; Chao, J. (Schering Corp.); Farnesyl protein transferase inhibitors. US 6362188 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 16266 (2S)-hexahydro-2-pyrazinecarboxylic acid; (S)-Piperazine-2-carboxylic acid C5H10N2O2 详情 详情
(II) 51591 (2R)-4-(tert-butoxycarbonyl)-2-piperazinecarboxylic acid C10H18N2O4 详情 详情
(III) 51593 (2R)-4-(tert-butoxycarbonyl)-1-[(cyclohexyloxy)carbonyl]-2-piperazinecarboxylic acid C17H28N2O6 详情 详情
(IV) 51594 (2R)-1-[(cyclohexyloxy)carbonyl]-2-piperazinecarboxylic acid C12H20N2O4 详情 详情
(V) 17936 8,11-dichloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine C14H11Cl2N 详情 详情
(VI) 51595 (2R)-4-[(11S)-8-chloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-yl]-1-[(cyclohexyloxy)carbonyl]-2-piperazinecarboxylic acid C26H30ClN3O4 详情 详情
Extended Information