N-Boc-4-氧代-L-脯氨酸可用于制备N-Boc-顺式-4-羟基-L-脯氨酸,是一种重要的医药中间体。许多上市药物和活性分子的结构中都含有此片段,例如:FK888①、Microcolin A 和 B ②、BI201335 ③、Ciluprevir (BILN-2061) ③、Danoprevir (ITMN-191,II期) ③ 等。
制备方法 步骤1:中间体2(顺式-1)的制备将L-羟脯氨酸(65.6克,0.5摩尔,过量1.0倍)加入到NaOH溶液(1.0M,525毫升,8.0倍)和二氧六环(Dioxane)(525毫升,8.0倍)中。降温至0~5°C,向其中缓慢滴入Boc2O(120克,0.55摩尔,过量1.1倍),滴完后在0~5°C下保温搅拌。使用HPLC监控反应进程,直至反应完毕。然后将体系降至0~5°C,用稀盐酸调节pH至2~3。乙酸乙酯(EA)萃取4次(每次300毫升),合并有机相并用饱和食盐水洗涤,无水硫酸钠干燥后减压除去溶剂得到约113.1克粗品油状物。直接用于下一步反应。
步骤2:中间体3(顺式-1、N-Boc-4-氧代-L-脯氨酸)的制备将底物中间体2(1.0倍摩尔量)溶解于二氯甲烷(DCM)(3.5倍体积)中,降温至0~10°C。加入适量的Tempo(四甲基哌啶氮氧化物),控制反应液温度在0~10°C,向其中缓慢滴加NaClO溶液(3.0倍摩尔量)。使用HPLC监控反应进程,直至反应完毕后用乙酸乙酯(EA)萃取4次(每次3.5倍体积),合并有机相并用饱和食盐水洗涤,无水硫酸钠干燥后减压除去溶剂得到粗品。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2-benzyl 1-(tert-butyl) (S)-4-oxopyrrolidine-1,2-dicarboxylate | 154456-97-0 | C17H21NO5 | 319.357 |
Boc-L-羟脯氨酸 | (2S,4R)-4-hydroxy-1-[(2-methylpropan-2-yl)oxycarbonyl]pyrrolidine-2-carboxylic acid | 13726-69-7 | C10H17NO5 | 231.249 |
N-Boc-反式-4-羟基-D-脯氨酸 | (2R,4S)-1-(tert-butoxycarbonyl)-4-hydroxypyrrolidine-2-carboxylic acid | 147266-92-0 | C10H17NO5 | 231.249 |
N-叔丁氧羰基-4-羟基-L-脯氨酸 | N-Boc-hydroxyproline | 331442-12-7 | C10H17NO5 | 231.249 |
N-Boc-顺式-4-羟基-L-脯氨酸 | N-tert-butoxycarbonyl-L-cis-4-hydroxyproline | 87691-27-8 | C10H17NO5 | 231.249 |
N-(叔丁氧羰基)-4-羟基脯氨酸苄酯 | N-(tert-butoxycarbonyl)-(2S,4R)-4-hydroxyproline benzyl ester | 89813-47-8 | C17H23NO5 | 321.373 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
BOC-4-氧代-L-脯氨酸甲酯 | (S)-1-tert-butyl 2-methyl 4-oxopyrrolidine-1,2-dicarboxylate | 102195-80-2 | C11H17NO5 | 243.26 |
N-BOC-4-氧代-L-脯氨酸叔丁酯 | (S)-di-tert-butyl 4-oxopyrrolidine-1,2-dicarboxylate | 166410-05-5 | C14H23NO5 | 285.34 |
—— | 2-benzyl 1-(tert-butyl) (S)-4-oxopyrrolidine-1,2-dicarboxylate | 154456-97-0 | C17H21NO5 | 319.357 |
Boc-L-羟脯氨酸 | (2S,4R)-4-hydroxy-1-[(2-methylpropan-2-yl)oxycarbonyl]pyrrolidine-2-carboxylic acid | 13726-69-7 | C10H17NO5 | 231.249 |
N-Boc-顺式-4-羟基-L-脯氨酸 | N-tert-butoxycarbonyl-L-cis-4-hydroxyproline | 87691-27-8 | C10H17NO5 | 231.249 |
N-Boc-顺式-4-羟基-L-脯氨酸甲酯 | (2S,4S)-N-tert-butoxycarbonyl-4-hydroxyproline methyl ester | 102195-79-9 | C11H19NO5 | 245.276 |
N-Boc-4-亚甲基-L-脯氨酸 | (S)-1-(tert-butoxycarbonyl)-4-methylenepyrrolidine-2-carboxylic acid | 84348-38-9 | C11H17NO4 | 227.26 |
—— | (2S)-4-(2-acrylamidoethyl)-1-(tert-butoxycarbonyl)pyrrolidine-2-carboxylic acid | 1427055-13-7 | C15H24N2O5 | 312.366 |
—— | (2S,4S)-1-(tert-butoxycarbonyl)-4-hydroxy-4-methylpyrrolidine-2-carboxylic acid | 1199793-52-6 | C11H19NO5 | 245.276 |
N-Boc-反式-4-氨基-L-脯氨酸甲酯 | 1-(1,1-dimethylethyl) 2-methyl (2S,4R)-4-amino-1,2-pyrrolidinedicarboxylate | 121148-00-3 | C11H20N2O4 | 244.291 |
—— | N-(tert-butyloxycarbonyl)-trans-4-(methylthio)-L-proline | 876953-58-1 | C11H19NO4S | 261.342 |
—— | (4EZ)-1-(tert-butoxycarbonyl)-4-(methoxyimino)-L-proline | 364077-88-3 | C11H18N2O5 | 258.274 |
—— | (2S,4EZ)-1(tert-butoxycarbonyl)-4-(methoxyimino)-2-pyrrolidinecarboxylic acid | —— | C11H18N2O5 | 258.274 |
—— | 1-(tert-butoxycarbonyl)-4(methoxyimino)-2-pyrrolidinecarboxylic acid | 479079-17-9 | C11H18N2O5 | 258.274 |
—— | (s)-N-tert-butoxycarbonyl-4,4-difluoro-L-proline ethyl ester | —— | C12H19F2NO4 | 279.284 |
—— | 1-tert-butyl-2-methyl (2S,4EZ)-4-(methoxyimino)pyrrolidine-1,2-dicarboxylate | 461418-07-5 | C12H20N2O5 | 272.301 |
(2S,4R)-4-叠氮基-1,2-吡咯烷二甲酸1-(1,1-二甲基乙基)2-甲酯 | 1-tert-butyl 2-methyl (2S,4R)-4-azido-1,2-pyrrolidinedicarboxylate | 121147-97-5 | C11H18N4O4 | 270.288 |
—— | (2S,4S)-2-methyl N-Boc-4-((methylsulfonyl)oxy)pyrrolidine-2-carboxylate | 121147-93-1 | C12H21NO7S | 323.367 |
—— | (2S,4R)-1-(tert-butoxycarbonyl)-4-(N-benzyloxycarbonyl)aminoproline | 874163-00-5 | C18H24N2O6 | 364.398 |
—— | (2S,4E)-4-benzylidene-N-(t-butoxycarbonyl)pyrrolidine-2-carboxylic acid | 84348-42-5 | C17H21NO4 | 303.358 |
(2S,4R)-N-叔丁氧羰基-4-苯基吡咯烷-2-甲酸 | (2S,4R)-1-(tert-butoxycarbonyl)-4-phenylpyrrolidine-2-carboxylic acid | 336818-78-1 | C16H21NO4 | 291.347 |
—— | 1-(tert-butyl) 2-methyl (2S,4R)-4-(acetylthio)pyrrolidine-1,2-dicarboxylate | 188111-18-4 | C13H21NO5S | 303.379 |
(2S)-4-氧代-2-(3-噻唑烷基羰基)-1-吡咯烷羧酸叔丁酯 | tert-butyl (2S)-4-oxo-2-(1,3-thiazolidin-3-ylcarbonyl)pyrrolidine-1-carboxylate | 401564-36-1 | C13H20N2O4S | 300.379 |
—— | 1-(tertbutoxycarbonyl)-4-{[(4-methoxybenzyl)oxy]imino}-2-pyrrolidinecarboxylic acid | —— | C18H24N2O6 | 364.398 |