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【结 构 式】

【分子编号】68268

【品名】3-hydroxy-1-(1-trityl-1H-imidazol-4-yl)propan-1-one;3-hydroxy-1-(1-trityl-4-imidazolyl)-1-propanone

【CA登记号】 

【 分 子 式 】C25H22N2O2

【 分 子 量 】382.46196

【元素组成】C 78.51% H 5.8% N 7.32% O 8.37%

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:(XVI)

Condensation of 1-tritylimidazole-4-carbaldehyde (IV) with ethyl acetate (XIII) using LDA in THF furnishes ethyl 3-hydroxy-3-(1-trityl-4-imidazolyl)propanoate (XIV), which by reduction with LiAlH4 in THF affords diol (XV). Selective oxidation of the secondary alcohol of compound (XV) by means of MnO2 in CH2Cl2 gives 3-hydroxy-1-(1-trityl-4-imidazolyl)-1-propanone (XVI), which upon hydroxyl group activation with MsCl and Et3N in EtOAc followed by cyclization in the presence of Et3N and MeOH in acetonitrile at 70 °C yields 5,6-dihydro-7H-pyrrolo[1,2-c]imidazol-7-one (XVII). Coupling of ketone (XVII) with metalated 6-bromo-N-methyl-2-naphthamide (XVIII) [prepared by amidation of 6-bromo-2-naphthoic acid (I) with CH3NH2 by means of EDC, HOBt and DIEA in DMF] with BuLi and optionally 2-bromobenzotrifluoride in THF provides the 7-(2-naphthyl)-6,7-dihydro-5H-pyrrolo[1,2-c]imidazol-7-ol derivative (XIX), which is finally resolved by crystallization with (2S,3S)-(–)-tartranilic acid followed by addition of NaOH or by chiral HPLC separation .
Intermediate (XVI) can alternatively be prepared by addition of HBr to 1-(1-trityl-4-imidazolyl)-2-propen-1-one (XX) in AcOH to afford the bromoketone (XXI) and then cyclization in the presence of Et3N .

1 Hitaka, T., Kusaka, M., Aoki, I., Ojida, A., Matsunaga, N., Adachi, M., Tasaka, A. (Takeda Pharmaceutical Co., Ltd.). Novel imidazole derivatives, production method thereof and use thereof. EP 1334106, EP 1681290, JP 2003201282, JP 2006045239, US 7141598, WO 2002040484.
2 Kaku, T., Hitaka, T., Ojida, A. et al. Discovery of orteronel (TAK-700), a naphthylmethylimidazole derivative, as a highly selective 17,20-lyase inhibitor with potential utility in the treatment of prostate cancer. Bioorg Med Chem 2011, 19(21): 6383-99.
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) 27712 1-trityl-1H-imidazole-4-carbaldehyde;1-Tritylimidazole-4-carboxaldehyde 33016-47-6 C23H18N2O 详情 详情
(XIII) 17491 ethyl acetate 141-78-6 C4H8O2 详情 详情
(XIV) 68266 ethyl 3-hydroxy-3-(1-trityl-4-imidazolyl)propanoate   C27H26N2O3 详情 详情
(XV) 68267 1-(1-trityl-1H-imidazol-4-yl)propane-1,3-diol   C25H24N2O2 详情 详情
(XVI) 68268 3-hydroxy-1-(1-trityl-1H-imidazol-4-yl)propan-1-one;3-hydroxy-1-(1-trityl-4-imidazolyl)-1-propanone   C25H22N2O2 详情 详情
(XVII) 68269 5,6-dihydro-7H-pyrrolo[1,2-c]imidazol-7-one;5H-pyrrolo[1,2-c]imidazol-7(6H)-one   C6H6N2O 详情 详情
(XVIII) 68270 6-bromo-N-methyl-2-naphthamide   C12H10BrNO 详情 详情
(XIX) 68271 7-(2-naphthyl)-6,7-dihydro-5H-pyrrolo[1,2-c]imidazol-7-ol;6-(7-hydroxy-6,7-dihydro-5H-pyrrolo[1,2-c]imidazol-7-yl)-N-methyl-2-naphthamide   C18H17N3O2 详情 详情
(XX) 68272 1-(1-trityl-4-imidazolyl)-2-propen-1-one;1-(1-trityl-1H-imidazol-4-yl)prop-2-en-1-one   C25H20N2O 详情 详情
(XXI) 68273 3-bromo-1-(1H-imidazol-4-yl)propan-1-one   C6H7BrN2O 详情 详情
Extended Information