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【结 构 式】

【分子编号】41678

【品名】tert-butyl 2,4-dioxo-1,3,8-triazaspiro[4.5]decane-8-carboxylate

【CA登记号】

【 分 子 式 】C12H19N3O4

【 分 子 量 】269.30068

【元素组成】C 53.52% H 7.11% N 15.6% O 23.76%

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:(III)

Synthesis of intermediate (XIV): Protection of 4-piperidone (I) with (Boc)2O in presence of DMAP and Et3N yields (II), which is converted into hydantoin (III) by means of NaCN in presence of (NH4)2CO3. Hydantoin (III) is then fully protected to provide (IV) by treatment with (Boc)2O and DMAP in THF. Alternatively (IV) can be obtained by treatment of 4-piperidone (I) with KCN in presence of (NH4)2CO3 to yield hydantoin (V), which is then protected with (Boc)2O and DMAP in DME. Hydrolysis of (IV) with NaOH affords aminoacid (VI) whose free amine is protected to provide carboxylic acid (VII). Treatment of (VII) with isobutyl chloroformate (IBCF) in DME in presence of NMM, followed by aqueous ammonia, yields amide (VIII), which is converted to (IX) by hydrogenation with H2 over Pd/C. Reductive amination of (IX) with aldehyde (X) affords amino amide (XI), which is treated with triethyl orthoformate to provide spirocycle (XII). Reduction of (XII) with NaBH4 in EtOH gives (XIII), which is alkylated with ethyl bromoacetate (A) followed by hydrolysis with NaOH to yield intermediate (XIV).

1 Wysong, C.L.; et al.; 4-Aminopiperidine-4-carboxamylic acid: A cyclic alpha,alpha-disubstituted amino acid for preparation of water-soluble highly helical peptides. J Org Chem 1996, 61, 22, 7650-51.
2 Amblard, M.; Subra, G.; Bedos, P.; et al.; A rational approach to the design and synthesis of a new bradykinin B1 receptor antagonist. J Med Chem 2000, 43, 12, 2387.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(A) 16640 Ethyl 2-bromoacetate; Ethyl bromoacetate 105-36-2 C4H7BrO2 详情 详情
(I) 18178 4,4-piperidinediol 73390-11-1 C5H11NO2 详情 详情
(II) 18620 tert-butyl 4-oxo-1-piperidinecarboxylate;BOC-Piperidone;N-(tert-Butoxycarbonyl)-4-piperidone; N-Boc-4-piperidone 79099-07-3 C10H17NO3 详情 详情
(III) 41678 tert-butyl 2,4-dioxo-1,3,8-triazaspiro[4.5]decane-8-carboxylate C12H19N3O4 详情 详情
(IV) 41679 tri(tert-butyl) 2,4-dioxo-1,3,8-triazaspiro[4.5]decane-1,3,8-tricarboxylate C22H35N3O8 详情 详情
(V) 41680 1,3,8-triazaspiro[4.5]decane-2,4-dione 13625-39-3 C7H11N3O2 详情 详情
(VI) 41681 4-amino-1-(tert-butoxycarbonyl)-4-piperidinecarboxylic acid 183673-71-4 C11H20N2O4 详情 详情
(VII) 41682 1-(tert-butoxycarbonyl)-4-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-4-piperidinecarboxylic acid C26H30N2O6 详情 详情
(VIII) 41683 tert-butyl 4-(aminocarbonyl)-4-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-1-piperidinecarboxylate C26H31N3O5 详情 详情
(IX) 41684 tert-butyl 4-amino-4-(aminocarbonyl)-1-piperidinecarboxylate C11H21N3O3 详情 详情
(X) 18456 2-phenylacetaldehyde 122-78-1 C8H8O 详情 详情
(XI) 41685 tert-butyl 4-(aminocarbonyl)-4-(phenethylamino)-1-piperidinecarboxylate C19H29N3O3 详情 详情
(XII) 41686 tert-butyl 4-oxo-1-phenethyl-1,3,8-triazaspiro[4.5]dec-2-ene-8-carboxylate C20H27N3O3 详情 详情
(XIII) 41687 tert-butyl 4-oxo-1-phenethyl-1,3,8-triazaspiro[4.5]decane-8-carboxylate C20H29N3O3 详情 详情
(XIV) 41688 2-[8-(tert-butoxycarbonyl)-4-oxo-1-phenethyl-1,3,8-triazaspiro[4.5]dec-3-yl]acetic acid C22H31N3O5 详情 详情
Extended Information