中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | N-(tert-butyloxycarbonyl)-cis-4-acetylthio-L-proline methyl ester | 211299-16-0 | C13H21NO5S | 303.379 |
N-Boc-反式-4-羟基-L-脯氨酸甲酯 | 1-tert-butyl 2-methyl (2S,4R)-4-hydroxy-1,2-pyrrolidinedicarboxylate | 74844-91-0 | C11H19NO5 | 245.276 |
(2S,4R)-BOC-Γ-甲磺酰基氧甲基脯氨酸甲酯 | 1-(tert-butyl) 2-methyl (2S,4R)-4-((methylsulfonyl)oxy)pyrrolidine-1,2-dicarboxylate | 84520-67-2 | C12H21NO7S | 323.367 |
Herein we describe a convenient method for the synthesis of the β-substituted Cys analogs 1a, b and trans-β-mercapto proline 1c, from their corresponding α,β-unsaturated-α-amino esters using p-methoxybenzyl mercaptan as the sulfur source. The intermediate β-thioethers are stable toward chromatographic purification, and after global deprotection the β-mercapto amino acids 1a–c are obtained in good to high yields (64%–99%).