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【结 构 式】 
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【分子编号】46751 【品名】(2R)-2-aminopropanamide 【CA登记号】 |
【 分 子 式 】C3H8N2O 【 分 子 量 】88.1094 【元素组成】C 40.9% H 9.15% N 31.79% O 18.16% |
合成路线1
该中间体在本合成路线中的序号：(III)N-Boc-D-alanine (I) was coupled to the resin using diisopropyl carbodiimide and 1-hydroxybenzotriazole to afford resin (II). Subsequent cleavage of the Boc protecting group by means of trifluoroacetic acid provided the D-alanine-bound resin (III). Sequential coupling and deprotection cycles were carried out with the following protected amino acids: N-Boc-L-proline (IV), N-alpha-Boc-N6-isopropyl-N6-carbobenzoxy-L-lysine (VI) and N-Boc-L-leucine (VIII) to afford the respective peptide resins (V), (VII) and (IX). N-alpha-Boc-D-4-(Fmoc-amino)phenylalanine (X) was coupled to (IX), yielding resin (XI). Cleavage of the side-chain Fmoc protecting group with piperidine in DMF gave the aniline derivative (XII). After conversion to the corresponding urea by treatment with tert-butyl isocyanate, the Boc group was cleaved with trifluoroacetic acid to produce resin (XIII).
| 【1】 Stalewski, J.; Galyean, R.; Jiang, G.; et al.; GnRH antagonists: A new generation of long acting analogues incorporating p-ureido-phenylalanines at positions 5 and 6. J Med Chem 2001, 44, 3, 453. |
| 【2】 Jiang, G.; Semple, G. (Ferring BV Group Holding); GnRH antagonists being modified in positions 5 and 6. WO 9846634 . |
| 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) | 15859 | Boc-D-Alanine; (2R)-2-[(tert-butoxycarbonyl)amino]propionic acid | 7764-95-6 | C8H15NO4 | 详情 | 详情 |
| (II) | 46750 | tert-butyl (1R)-2-amino-1-methyl-2-oxoethylcarbamate | C8H16N2O3 | 详情 | 详情 | |
| (III) | 46751 | (2R)-2-aminopropanamide | C3H8N2O | 详情 | 详情 | |
| (IV) | 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 | |
| (V) | 46743 | (2S)-N-[(1R)-2-amino-1-methyl-2-oxoethyl]-2-pyrrolidinecarboxamide | C8H15N3O2 | 详情 | 详情 | |
| (VI) | 46752 | (2S)-6-[[(benzyloxy)carbonyl](isopropyl)amino]-2-[(tert-butoxycarbonyl)amino]hexanoic acid | 125323-99-1 | C22H34N2O6 | 详情 | 详情 |
| (VII) | 46744 | benzyl (5S)-5-amino-6-[(2S)-2-([[(1R)-2-amino-1-methyl-2-oxoethyl]amino]carbonyl)pyrrolidinyl]-6-oxohexyl(isopropyl)carbamate | C25H39N5O5 | 详情 | 详情 | |
| (VIII) | 23663 | (2S)-2-[(tert-butoxycarbonyl)amino]-4-methylpentanoic acid；N-Boc-L-leucine | C11H21NO4 | 详情 | 详情 | |
| (IX) | 46745 | benzyl (5S)-6-[(2S)-2-([[(1R)-2-amino-1-methyl-2-oxoethyl]amino]carbonyl)pyrrolidinyl]-5-[[(2S)-2-amino-4-methylpentanoyl]amino]-6-oxohexyl(isopropyl)carbamate | C31H50N6O6 | 详情 | 详情 | |
| (X) | 46746 | (2R)-2-[(tert-butoxycarbonyl)amino]-3-(4-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]phenyl)propionic acid | 173054-11-0 | C29H30N2O6 | 详情 | 详情 |
| (XI) | 46747 | 9H-fluoren-9-ylmethyl 4-[(2R,5S,8S)-8-[[(2S)-2-([[(1R)-2-amino-1-methyl-2-oxoethyl]amino]carbonyl)pyrrolidinyl]carbonyl]-2-[(tert-butoxycarbonyl)amino]-5-isobutyl-13-isopropyl-3,6,14-trioxo-16-phenyl-15-oxa-4,7,13-triazahexadec-1-yl]phenylcarbamate | C60H78N8O11 | 详情 | 详情 | |
| (XII) | 46748 | benzyl (5S,8S,11R)-11-(4-aminobenzyl)-5-[[(2S)-2-([[(1R)-2-amino-1-methyl-2-oxoethyl]amino]carbonyl)pyrrolidinyl]carbonyl]-8-isobutyl-15,15-dimethyl-7,10,13-trioxo-14-oxa-6,9,12-triazahexadec-1-yl(isopropyl)carbamate | C45H68N8O9 | 详情 | 详情 | |
| (XIII) | 46749 | benzyl (5S)-5-[((2S)-2-[[(2R)-2-amino-3-(4-[[(tert-butylamino)carbonyl]amino]phenyl)propanoyl]amino]-4-methylpentanoyl)amino]-6-[(2S)-2-([[(1R)-2-amino-1-methyl-2-oxoethyl]amino]carbonyl)pyrrolidinyl]-6-oxohexyl(isopropyl)carbamate | C45H69N9O8 | 详情 | 详情 |