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【结 构 式】 
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【分子编号】37334 【品名】(2S)-4-methyl-2-[[(2S)pyrrolidinylcarbonyl]amino]pentanoic acid 【CA登记号】52899-07-7 |
【 分 子 式 】C11H20N2O3 【 分 子 量 】228.29148 【元素组成】C 57.87% H 8.83% N 12.27% O 21.02% |
合成路线1
该中间体在本合成路线中的序号：(X)Solid-phase peptide synthesis started with N-Boc-L-leucine linked to a PAM resin (VII). Deprotection of the Boc group was effected by treatment with trifluoroacetic acid in CH2Cl2 to give leucine-resin (VIII). Sequential couplings with the respective protected amino acids were mediated by DCC and HOBt, and trifluoroacetic acid in CH2Cl2 was used for deprotection of the Boc groups. The following protected amino acids were sequentially coupled: N-Boc-L-proline (IX), N-Boc-L-isoleucine (XI), N-Boc-L-proline (IX), N-Boc-L-glutamic acid omega-benzyl ester (XIV), N-Boc-L-phenylalanine (XVI) and N-Boc-L-aspartic acid omega-cyclohexyl ester (XVIII) to afford the peptide resins (X), (XII), (XIII), (XV), (XVII) and (XIX), respectively.
| 【1】 DiMaio, J. (National Research Council of Canada); Thrombin inhibitors based on the amino acid sequence of hirudin. JP 1999502203; WO 9629347 . |
| 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) | 23663 | (2S)-2-[(tert-butoxycarbonyl)amino]-4-methylpentanoic acid；N-Boc-L-leucine | C11H21NO4 | 详情 | 详情 | |
| (VIII) | 26057 | L-Leucine | 61-90-5 | C6H13NO2 | 详情 | 详情 |
| (IX) | 16374 | (1R,4S)-7-[(2,2-dimethylpropanoyl)oxy]-7-azabicyclo[2.2.1]heptan-2-one | C11H17NO3 | 详情 | 详情 | |
| (IX) | 16734 | (2S)-1-(tert-butoxycarbonyl)tetrahydro-1H-pyrrole-2-carboxylic acid; N-alpha-t-BOC-L-proline; (2S)-1-(tert-butoxycarbonyl)-2-pyrrolidinecarboxylic acid | C10H17NO4 | 详情 | 详情 | |
| (X) | 37334 | (2S)-4-methyl-2-[[(2S)pyrrolidinylcarbonyl]amino]pentanoic acid | 52899-07-7 | C11H20N2O3 | 详情 | 详情 |
| (XI) | 30009 | (2S,3S)-2-[(tert-butoxycarbonyl)amino]-3-methylpentanoic acid | 13139-16-7 | C11H21NO4 | 详情 | 详情 |
| (XII) | 37335 | (2S)-2-[([(2S)-1-[(2S,3S)-2-amino-3-methylpentanoyl]pyrrolidinyl]carbonyl)amino]-4-methylpentanoic acid | C17H31N3O4 | 详情 | 详情 | |
| (XIII) | 37336 | (2S)-4-methyl-2-([[(2S)-1-((2S,3S)-3-methyl-2-[[(2S)pyrrolidinylcarbonyl]amino]pentanoyl)pyrrolidinyl]carbonyl]amino)pentanoic acid | C22H38N4O5 | 详情 | 详情 | |
| (XIV) | 25141 | (2S)-5-(benzyloxy)-2-[(tert-butoxycarbonyl)amino]-5-oxopentanoic acid | 13574-13-5 | C17H23NO6 | 详情 | 详情 |
| (XV) | 37337 | (2S)-2-[[((2S)-1-[(2S,3S)-2-[([(2S)-1-[(2S)-2-amino-5-(benzyloxy)-5-oxopentanoyl]pyrrolidinyl]carbonyl)amino]-3-methylpentanoyl]pyrrolidinyl)carbonyl]amino]-4-methylpentanoic acid | C34H51N5O8 | 详情 | 详情 | |
| (XVI) | 12874 | (2R)-2-[(tert-Butoxycarbonyl)amino]-3-phenylpropionic acid; N-alpha-t-BOC-L-Phenylalanine | 13734-34-4 | C14H19NO4 | 详情 | 详情 |
| (XVII) | 37338 | (2S)-2-[[((2S)-1-[(2S,3S)-2-[([(2S)-1-[(2S)-2-[[(2S)-2-amino-3-phenylpropanoyl]amino]-5-(benzyloxy)-5-oxopentanoyl]pyrrolidinyl]carbonyl)amino]-3-methylpentanoyl]pyrrolidinyl)carbonyl]amino]-4-methylpentanoic acid | C43H60N6O9 | 详情 | 详情 | |
| (XVIII) | 37339 | (2S)-2-[(tert-butoxycarbonyl)amino]-4-(cyclohexyloxy)-4-oxobutyric acid | 73821-95-1 | C15H25NO6 | 详情 | 详情 |
| (XIX) | 37340 | (2S)-2-[[((2S)-1-[(2S,3S)-2-[([(2S)-1-[(2S)-2-[((2S)-2-[[(2S)-2-amino-4-(cyclohexyloxy)-4-oxobutanoyl]amino]-3-phenylpropanoyl)amino]-5-(benzyloxy)-5-oxopentanoyl]pyrrolidinyl]carbonyl)amino]-3-methylpentanoyl]pyrrolidinyl)carbonyl]amino]-4-methylpentanoic acid | C53H75N7O12 | 详情 | 详情 |