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【结 构 式】

【分子编号】53061

【品名】(2S)-N-{[(4R)-2-benzyl-4,8,8-trimethyl-6,10-dioxa-2-azaspiro[4.5]dec-4-yl]methyl}-1-[(4-methylphenyl)sulfonyl]-2-pyrrolidinecarboxamide

【CA登记号】n/a

【 分 子 式 】C30H41N3O5S

【 分 子 量 】555.73876

【元素组成】C 64.84% H 7.44% N 7.56% O 14.39% S 5.77%

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:(X)

Alkylation of ethyl 1-benzyloxycarbonyl-3-oxopyrrolidine-4-carboxylate (I) with iodomethane and K2CO3 produced the 4-methylpyrrolidine (II). The keto group of (III) was then protected as the corresponding ketal (IV) with 2,2-dimethyl-1,3-propanodiol (III). Replacement of the benzyloxycarbonyl protecting group of (IV) with a benzyl group (V) was accomplished by catalytic hydrogenolysis, followed by alkylation of the resulting pyrrolidine with benzyl chloride. The ester group of (V) was then reduced to the primary alcohol (VI) using LiAlH4. After conversion of alcohol (VI) to the corresponding mesylate, displacement with NaN3 provided the alkyl azide (VII). This was reduced to the primary amine (VIII) by catalytic hydrogenation over Raney-Ni. Resolution of the racemic amine (VIII) was carried out via acylation with N-tosyl-L-proline (IX), followed by chromatographic separation of the diastereomeric amides. Base-promoted hydrolysis of the chiral auxiliary from the desired diastereoisomer (X) provided the (R)-amine, which was further protected as the N-Boc derivative (XI). The N-benzyl group of (XI) was then removed by catalytic hydrogenolysis over Pd/C to yield the target pyrrrolidine (XII).

1 Yoon, S.J.; Chung, Y.H.; Lee, C.W.; Choi, D.R.; Lee, J.S.; Yang, W.Y.; Kim, N.D.; Jin, Y.H.; Song, W.J.; Kim, I.H.; Shin, J.H. (Dong-Wha Pharmaceuticals Industry Co. Ltd); Optically active quinoline carboxylic acid derivs. having 7-pyrrolidine substitutes causing optical activity and a process for preparing thereof. WO 0071541 .
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) 53053 1-benzyl 3-ethyl 4-oxo-1,3-pyrrolidinedicarboxylate n/a C15H17NO5 详情 详情
(II) 53054 1-benzyl 3-ethyl 3-methyl-4-oxo-1,3-pyrrolidinedicarboxylate n/a C16H19NO5 详情 详情
(III) 12641 Neopentyl glycol; 2,2-Dimethyl-1,3-propanediol 126-30-7 C5H12O2 详情 详情
(IV) 53055 2-benzyl 4-ethyl 4,8,8-trimethyl-6,10-dioxa-2-azaspiro[4.5]decane-2,4-dicarboxylate n/a C21H29NO6 详情 详情
(V) 53056 ethyl 2-benzyl-4,8,8-trimethyl-6,10-dioxa-2-azaspiro[4.5]decane-4-carboxylate n/a C20H29NO4 详情 详情
(VI) 53057 (2-benzyl-4,8,8-trimethyl-6,10-dioxa-2-azaspiro[4.5]dec-4-yl)methanol n/a C18H27NO3 详情 详情
(VII) 50358 (5S,6R)-6-(2-[[tert-butyl(dimethyl)silyl]oxy]ethyl)-5-methyltetrahydro-2H-pyran-2-one C14H28O3Si 详情 详情
(VIII) 53059 (2-benzyl-4,8,8-trimethyl-6,10-dioxa-2-azaspiro[4.5]dec-4-yl)methanamine; (2-benzyl-4,8,8-trimethyl-6,10-dioxa-2-azaspiro[4.5]dec-4-yl)methylamine n/a C18H28N2O2 详情 详情
(IX) 53060 (2S)-1-[(4-methylphenyl)sulfonyl]-2-pyrrolidinecarboxylic acid n/a C12H15NO4S 详情 详情
(X) 53061 (2S)-N-{[(4R)-2-benzyl-4,8,8-trimethyl-6,10-dioxa-2-azaspiro[4.5]dec-4-yl]methyl}-1-[(4-methylphenyl)sulfonyl]-2-pyrrolidinecarboxamide n/a C30H41N3O5S 详情 详情
(XI) 53062 tert-butyl [(4R)-2-benzyl-4,8,8-trimethyl-6,10-dioxa-2-azaspiro[4.5]dec-4-yl]methylcarbamate n/a C23H36N2O4 详情 详情
(XII) 53063 tert-butyl [(4S)-4,8,8-trimethyl-6,10-dioxa-2-azaspiro[4.5]dec-4-yl]methylcarbamate n/a C16H30N2O4 详情 详情
Extended Information