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【结 构 式】

【分子编号】65564

【品名】 

【CA登记号】 

【 分 子 式 】C25H29BrN2O5

【 分 子 量 】517.41974

【元素组成】C 58.03% H 5.65% Br 15.44% N 5.41% O 15.46%

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:(XVII)

The aminoazepinone building block (III) can be prepared as follows. 2,4-Dimethoxybenzylamine (XIII) is alkylated with 2,3-dibromopropene (XIV) in the presence of Et3N to yield amine (XV), which is condensed with 2(R)-(benzyloxycarbonylamino)-4-pentenoic acid (XVI) by means of EDC in CH2Cl2 giving amide (XVII). Subsequent coupling of vinyl bromide (XVII) with 2,3-difluorophenylboronic acid (XVIII) in the presence of 1,1’-bis(diphenylphosphino)ferrocenedichloropalladium(II)· CH2Cl2 and Na2CO3 in DMF gives (XIX). Ring-closing olefin metathesis in diene (XIX) utilizing a second-generation Grubbs catalyst generates the azepinone derivative (XX), from which the dimethoxybenzyl group is removed by means of trifluoroacetic acid in CH2Cl2 to provide compound (XXI). Hydrogenation of olefin (XXI) and simultaneous Cbz group cleavage in the presence of Pd/C and Boc2O leads to the Boc-protected aminoperhydroazepinone (XXII). After alkylation of lactam (XXII) with the 2,2,2-trifluoroethyl sulfonate (XXIII) and NaH in DMF, the N-Boc group is removed using trifluoroacetic acid to furnish the target amine (III) (1). Scheme 2.

1 Burgey, C.S., Deng, Z.J., Williams, T.M., Paone, D.V., Shaw, A.W., Nguyen, D.N. (Merck & Co., Inc.). CGRP receptor antagonists. EP 1638969, JP 2006523697, US 2004229861, US 6953790, WO 2004092166, WO 2004092168.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(III) 65556 (3R,6S)-3-Amino-6-(2,3-difluorophenyl)hexahydro-2-oxo-1-(2,2,2-trifluoroethyl)-1H-azepine   C14H15F5N2O 详情 详情
(XIII) 32115 (2,4-dimethoxyphenyl)methanamine; 2,4-dimethoxybenzylamine 20781-21-9 C9H13NO2 详情 详情
(XIV) 21748 2,3-dibromo-1-propene 513-31-5 C3H4Br2 详情 详情
(XV) 65562     C12H16BrNO2 详情 详情
(XVI) 65563 Cbz-alpha-Allyl-L-Gly; N-ALPHA-CARBOBENZOXY-L-ALPHA-ALLYL-GLYCINE; CBZ-(S)-2-AMINO-4-PENTENOIC ACID; (S)-2-CBZ-AMINO-4-PENTENOIC ACID 78553-51-2 C13H15NO4 详情 详情
(XVII) 65564     C25H29BrN2O5 详情 详情
(XVIII) 65565 2,3-Difluorophenylboronic acid; 2,3-Difluorobenzeneboronic acid 121219-16-7 C6H5BF2O2 详情 详情
(XIX) 65566     C31H33F2N2O5 详情 详情
(XX) 65567     C29H28F2N2O5 详情 详情
(XXI) 65568     C20H18F2N2O3 详情 详情
(XXII) 65569     C17H21F2N2O3 详情 详情
(XXIII) 33474 2,2,2-Trifluoroethyl trichloromethanesulfonate; 2,2,2-Trifluoroethyl trichloromethylsulfonate 23199-56-6 C3H2Cl3F3O3S 详情 详情
Extended Information