中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
(S)-N-叔丁氧羰基-2-吡咯烷酮-5-甲酸叔丁酯 | tert-butyl (S)-N-tert-butoxycarbonylpyroglutamate | 91229-91-3 | C14H23NO5 | 285.34 |
N-叔丁氧羰基-L-焦谷氨酸苄酯 | benzyl (2S)-N-tert-butoxycarbonyl-5-oxoprolinate | 113400-36-5 | C17H21NO5 | 319.357 |
BOC-L-焦谷氨酸 | L-N-t-butoxycarbonylpyroglutamic acid | 53100-44-0 | C10H15NO5 | 229.233 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | di-tert-butyl (S)-4-methylene-5-oxopyrrolidine-1,2-dicarboxylate | 144331-21-5 | C15H23NO5 | 297.351 |
—— | ditert-butyl (2S,4E)-4-ethylidene-5-oxopyrrolidine-1,2-dicarboxylate | 151028-15-8 | C16H25NO5 | 311.378 |
—— | tert-butyl (2S)-1-tert-butoxycarbonyl-4-(2-pyridinyl)aminomethylenepyroglutamate | 172298-78-1 | C20H27N3O5 | 389.451 |
1,2-吡咯烷二羧酸,5-羰基-4-亚丙基-,二(1,1-二甲基乙基)酯,(2S,4E)- | tert-butyl 2-(S)-N-Boc-4-(E)-propylidenepyroglutamate | 151028-16-9 | C17H27NO5 | 325.405 |
—— | tert-butyl (2S)-N-tert-butoxycarbonyl-4-methoxymethylenepyroglutamate | 172298-73-6 | C16H25NO6 | 327.378 |
—— | ditert-butyl (2S,4E)-4-benzylidene-5-oxopyrrolidine-1,2-dicarboxylate | 151028-17-0 | C21H27NO5 | 373.449 |
—— | tert-butyl (2S,4S)-N-(tert-butoxycarbonyl)-4-methylpyroglutamate | 144345-38-0 | C15H25NO5 | 299.367 |
—— | (2S,4S)-5-Oxo-4-propyl-pyrrolidine-1,2-dicarboxylic acid di-tert-butyl ester | 160806-14-4 | C17H29NO5 | 327.421 |
—— | (2S,4RS)-tert-butyl N-(tert-butoxycarbonyl)-4-(dimethylaminomethyl)pyroglutamate | 695188-71-7 | C17H30N2O5 | 342.436 |
—— | tert-butyl (2S,4R)-N-tert-butoxycarbonyl-4-carboxymethylpyroglutamate | 160806-10-0 | C16H25NO7 | 343.377 |
—— | tert-butyl (2S,4S)-N-(tert-butoxycarbonyl)-4-benzylpyroglutamate | 138858-47-6 | C21H29NO5 | 375.465 |
—— | (2S,4S)-4-Propyl-pyrrolidine-1,2-dicarboxylic acid di-tert-butyl ester | 160806-21-3 | C17H31NO4 | 313.437 |
—— | 5-O-tert-butyl 1-O-methyl (2E,4S)-4-[(2-methylpropan-2-yl)oxycarbonylamino]-2-propylidenepentanedioate | 151028-25-0 | C18H31NO6 | 357.447 |
A library of twelve N(4´)-substituted di-tert-butyl (2S,4E)-4-arylaminomethylidene-5-oxopyrrolidine-1,2-dicarboxylates 6/6´a - l were prepared in 47 - 90% yield by parallel acid-catalysed treatment of di-tert-butyl (2S,4E)-4-[(dimethylamino)methylidene]-5-oxopyrrolidine-1,2-dicarboxylate (4) with anilines 5a - j, ethyl glycinate (5k), and ethyl β -alaninate (3l). Acidolytic deprotection of compounds 6a - c, e - j afforded the corresponding (2S,4E)-4-arylaminomethylidene-5-oxopyrrolidine-2-carboxylic acids 7a - c, e - j in 39 - 99% yield. The configuration around the C=C double bond in the enaminones 6 and 7 was determined by NMR spectroscopy.