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【结 构 式】 
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【分子编号】18849 【品名】(2S,3R)-2-amino-3-(tert-butoxy)butanamide 【CA登记号】 |
【 分 子 式 】C8H18N2O2 【 分 子 量 】174.2432 【元素组成】C 55.15% H 10.41% N 16.08% O 18.36% |
合成路线1
该中间体在本合成路线中的序号：(III)Compound (XI) was prepared by solid phase peptide synthesis on a Rink amide 4-methylbenzhydrylamine (MBHA) resin. After removal of Fmoc protecting group from the resin with 20% piperidine in N-methyl-2-pyrrolidinone (NMP), a coupling cycle was carried out with Fmoc-Thr(O-t-Bu)OH (I) using bromotripyrrolidino phosphonium hexafluorophosphate (PyBroP) and diisopropylethylamine (DIEA) in NMP, followed by Fmoc removal with 20% piperidine in NMP. To the Thr-bound resin (II) they were stepwise coupled in subsequent coupling and deprotecting cycles the following amino acids: Fmoc- (N-allyloxycarbonylpropyl)PheOH (IV), Fmoc-ValCl (VI), Fmoc-Lys(Boc)OH (VIII), and Fmoc-D-TrpOH (X) to yield the corresponding peptide-bound resins (V), (VII), (IX) and (XI), respectively.
| 【1】 Gilon, C.; et al.; A backbone-cyclic, receptor 5-selective somatostatin analogue: Synthesis, bioactivity, and nuclear magnetic resonance conformational analysis. J Med Chem 1998, 41, 6, 919. |
| 【2】 Hornik, V.; Seri-Levy, A.; Gellerman, G.; Gilon, C. (Yissum Research Development Co.); Conformationally constrained backbone cyclized somatostatin analogs. WO 9804583 . |
| 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) | 18847 | (2S,3R)-3-(tert-butoxy)-2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]butyric acid | C23H27NO5 | 详情 | 详情 | |
| (II) | 18848 | 9H-fluoren-9-ylmethyl (1S,2R)-1-(aminocarbonyl)-2-(tert-butoxy)propylcarbamate | C23H28N2O4 | 详情 | 详情 | |
| (III) | 18849 | (2S,3R)-2-amino-3-(tert-butoxy)butanamide | C8H18N2O2 | 详情 | 详情 | |
| (IV) | 18850 | (2S)-2-[[4-(allyloxy)-4-oxobutyl][(9H-fluoren-9-ylmethoxy)carbonyl]amino]-3-phenylpropionic acid | C31H31NO6 | 详情 | 详情 | |
| (V) | 18851 | allyl 4-[((1S)-2-[[(1S,2R)-1-(aminocarbonyl)-2-(tert-butoxy)propyl]amino]-1-benzyl-2-oxoethyl)amino]butanoate | C24H37N3O5 | 详情 | 详情 | |
| (VI) | 18852 | 9H-fluoren-9-ylmethyl (1S)-1-(chlorocarbonyl)-2-methylpropylcarbamate | 103321-53-5 | C20H20ClNO3 | 详情 | 详情 |
| (VII) | 18853 | allyl 4-[((1S)-2-[[(1S,2R)-1-(aminocarbonyl)-2-(tert-butoxy)propyl]amino]-1-benzyl-2-oxoethyl)[(2S)-2-amino-3-methylbutanoyl]amino]butanoate | C29H46N4O6 | 详情 | 详情 | |
| (VIII) | 18854 | (2S)-6-[(tert-butoxycarbonyl)amino]-2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]hexanoic acid | C26H32N2O6 | 详情 | 详情 | |
| (IX) | 18855 | allyl (10S,13S)-10-amino-15-((1S)-2-[[(1S,2R)-1-(aminocarbonyl)-2-(tert-butoxy)propyl]amino]-1-benzyl-2-oxoethyl)-13-isopropyl-2,2-dimethyl-4,11,14-trioxo-3-oxa-5,12,15-triazanonadecan-19-oate | C40H66N6O9 | 详情 | 详情 | |
| (X) | 18856 | (2R)-2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-3-(1H-indol-3-yl)propionic acid | C26H22N2O4 | 详情 | 详情 | |
| (XI) | 18857 | allyl (10S,13S)-15-((1S)-2-[[(1S,2R)-1-(aminocarbonyl)-2-(tert-butoxy)propyl]amino]-1-benzyl-2-oxoethyl)-10-[[(2R)-2-amino-3-(1H-indol-3-yl)propanoyl]amino]-13-isopropyl-2,2-dimethyl-4,11,14-trioxo-3-oxa-5,12,15-triazanonadecan-19-oate | C51H76N8O10 | 详情 | 详情 |