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【结 构 式】 
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【分子编号】48335 【品名】Boc-Cys(pMeOBzl)-OH; Boc-S-(4-methoxybenzyl)-L-cysteine; Boc-Cys(4MeOBzl)-OH; Boc-L-Cysteine(4-Methoxybenzyl); N-alpha-t-Boc-S-(p-methoxybenzyl)-L-cysteine; Boc-Cys(4-Mob)-OH; Boc-S-(4-methoxybenzyl) Cysteine; Boc-S-4-methoxybenzyl-L-cysteine 【CA登记号】18942-46-6 |
【 分 子 式 】C16H23NO5S 【 分 子 量 】341.42836 【元素组成】C 56.29% H 6.79% N 4.1% O 23.43% S 9.39% |
合成路线1
该中间体在本合成路线中的序号：(A),(F)Coupling of Boc-Trp-OH (I) onto BHA resin by means of diisopropylcarbodiimide (DIPCDI) and HOBt in DMF followed by Boc removal by treatment with TFA in CH2Cl2 in the presence of mercaptoethanol provides on resin amino acid (II), which is converted into dipeptide (III) by coupling with Boc-Cys(Mbz)-OH by means of DIPCDI and HOBt followed by Boc removal by means of TFA in CH2Cl2. The same protocol of coupling and deprotection is followed for the incorporation of Boc-Val-OH and Boc-Lys(2-ClZ)-OH to furnish anchored tripeptide (IV), which is converted into protected octapeptide (V) by sequential amino acid couplings and deprotections by following the protocol described above. Simultaneous cleavage and protecting groups removal of resin (V) by treatment with HF in the presence of cresol and 1,2-ethanedithiol provides linear peptide (VI), which is finally oxidized by means of potassium ferrocyanide to furnish the desired product.
| 【1】 Schally, A.V.; Cai, R.Z.; Biologically active octapeptides. US 4650787 . |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (B) | 19733 | (2S)-2-[(tert-butoxycarbonyl)amino]-3-methylbutyric acid | C10H19NO4 | 详情 | 详情 | |
| (G) | 22184 | (2R)-2-[(tert-butoxycarbonyl)amino]-3-phenylpropionic acid | C14H19NO4 | 详情 | 详情 | |
| (E) | 43774 | 6-chloro-5-(methylsulfanyl)-1H-indole; 6-chloro-1H-indol-5-yl methyl sulfide | C9H8ClNS | 详情 | 详情 | |
| (A),(F) | 48335 | Boc-Cys(pMeOBzl)-OH; Boc-S-(4-methoxybenzyl)-L-cysteine; Boc-Cys(4MeOBzl)-OH; Boc-L-Cysteine(4-Methoxybenzyl); N-alpha-t-Boc-S-(p-methoxybenzyl)-L-cysteine; Boc-Cys(4-Mob)-OH; Boc-S-(4-methoxybenzyl) Cysteine; Boc-S-4-methoxybenzyl-L-cysteine | 18942-46-6 | C16H23NO5S | 详情 | 详情 |
| (D) | 48341 | (2R)-2-[(tert-butoxycarbonyl)amino]-3-(1H-indol-3-yl)propionic acid | C16H20N2O4 | 详情 | 详情 | |
| (I) | 16114 | N-alpha-t-BOC-L-tryptophan; (2S)-2-[(tert-butoxycarbonyl)amino]-3-(1H-indol-3-yl)propionic acid | 13139-14-5 | C16H20N2O4 | 详情 | 详情 |
| (II) | 48206 | (2S)-2-amino-3-(1H-indol-3-yl)propanamide | C11H13N3O | 详情 | 详情 | |
| (III) | 48337 | (2R)-2-amino-N-[(1S)-2-amino-1-(1H-indol-3-ylmethyl)-2-oxoethyl]-3-[(4-methoxybenzyl)sulfanyl]propanamide | C22H26N4O3S | 详情 | 详情 | |
| (IV) | 48338 | 2-chlorobenzyl (5S)-5-amino-6-[((1S)-1-[[((1R)-2-[[(1S)-2-amino-1-(1H-indol-3-ylmethyl)-2-oxoethyl]amino]-1-[[(4-methoxybenzyl)sulfanyl]methyl]-2-oxoethyl)amino]carbonyl]-2-methylpropyl)amino]-6-oxohexylcarbamate | C41H52ClN7O7S | 详情 | 详情 | |
| (V) | 48339 | 4-((2S,5R,8S,11S,14R,17S)-18-amino-2-([(2R)-2-[[(2R)-2-amino-3-phenylpropanoyl]amino]-3-[(4-methoxybenzyl)sulfanyl]propanoyl]amino)-8-[4-([[(2-chlorobenzyl)oxy]carbonyl]amino)butyl]-5,17-bis(1H-indol-3-ylmethyl)-11-isopropyl-14-[[(4-methoxybenzyl)sulfanyl]methyl]-3,6,9,12,15,18-hexaoxo-4,7,10,13,16-pentaazaoctadec-1-yl)phenyl 2-bromobenzyl carbonate | C89H98BrClN12O15S2 | 详情 | 详情 | |
| (VI) | 48340 | (2S,5R,8S,11S,14R,17S,20R,23R)-23-amino-11-(4-aminobutyl)-17-(4-hydroxybenzyl)-2,14-bis(1H-indol-3-ylmethyl)-8-isopropyl-4,7,10,13,16,19,22-heptaoxo-24-phenyl-5,20-bis(sulfanylmethyl)-3,6,9,12,15,18,21-heptaazatetracosan-1-amide | C57H72N12O9S2 | 详情 | 详情 | |
| (C) | 31374 | (2S)-2-[(tert-butoxycarbonyl)amino]-6-([[(2-chlorobenzyl)oxy]carbonyl]amino)hexanoic acid | C19H27ClN2O6 | 详情 | 详情 |