【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% |
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 |