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【结 构 式】 
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【分子编号】42841 【品名】9H-fluoren-9-ylmethyl (2R)-2-(aminocarbonyl)-1-pyrrolidinecarboxylate 【CA登记号】 |
【 分 子 式 】C20H20N2O3 【 分 子 量 】336.39048 【元素组成】C 71.41% H 5.99% N 8.33% O 14.27% |
合成路线1
该中间体在本合成路线中的序号：(I)The title compound was prepared by solid-phase peptide synthesis starting from N-Fmoc-D-proline linked to Rink resin (I). Deprotection of the Fmoc group by means of piperidine in DMA afforded proline-resin (II). Coupling of N-alpha-Fmoc-NG-Pmc-D-arginine (III) to proline-resin (II) using diisopropyl carbodiimide (DIC) and HOBt, followed by Fmoc deprotection with piperidine in DMA, furnished dipeptide-resin (IV). Further coupling and deprotection cycles incorporating the amino acid N2-Fmoc-N6-Boc-D-lysine (V) (twice) and the peptoid residue N-Fmoc-N-[3-(3-Pmc-guanidino)propyl]glycine (VIII) yielded the peptide resins (VI), (VII) and (IX), respectively.
| 【1】 Hamy, F.; et al.; An inhibitor of the Tat/TAR RNA interaction that effectively suppresses HIV-1 replication. Proceedings of the National Academy of Sciences of the United States of America 1997, 94, 8, 3548. |
| 【2】 Felder, E.; Hamy, F.; Heizmann, G.; Klimkait, T.; Lazdins, J.K. (Novartis AG); Antiviral peptoid cpds.. EP 0832110; WO 9640759 . |
| 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) | 42841 | 9H-fluoren-9-ylmethyl (2R)-2-(aminocarbonyl)-1-pyrrolidinecarboxylate | C20H20N2O3 | 详情 | 详情 | |
| (II) | 37077 | (2R)-2-pyrrolidinecarboxamide | C5H10N2O | 详情 | 详情 | |
| (III) | 19035 | (2R)-2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-5-[(imino[[(2,2,5,7,8-pentamethyl-3,4-dihydro-2H-chromen-6-yl)sulfonyl]amino]methyl)amino]pentanoic acid | 119831-72-0 | C35H42N4O7S | 详情 | 详情 |
| (IV) | 42842 | (2R)-1-[(2R)-2-amino-5-[(imino[[(2,2,5,7,8-pentamethyl-3,4,4a,8a-tetrahydro-2H-chromen-6-yl)sulfonyl]amino]methyl)amino]pentanoyl]-2-pyrrolidinecarboxamide | C25H42N6O5S | 详情 | 详情 | |
| (V) | 42847 | (2R)-6-[(tert-butoxycarbonyl)amino]-2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]hexanoic acid | C26H32N2O6 | 详情 | 详情 | |
| (VI) | 42843 | tert-butyl (5R)-5-amino-6-([(1R)-1-[[(2R)-2-(aminocarbonyl)pyrrolidinyl]carbonyl]-4-[(imino[[(2,2,5,7,8-pentamethyl-3,4,4a,8a-tetrahydro-2H-chromen-6-yl)sulfonyl]amino]methyl)amino]butyl]amino)-6-oxohexylcarbamate | C36H62N8O8S | 详情 | 详情 | |
| (VII) | 42844 | tert-butyl (5R)-5-amino-6-([(1R)-1-[([(1R)-1-[[(2R)-2-(aminocarbonyl)pyrrolidinyl]carbonyl]-4-[(imino[[(2,2,5,7,8-pentamethyl-3,4,4a,8a-tetrahydro-2H-chromen-6-yl)sulfonyl]amino]methyl)amino]butyl]amino)carbonyl]-5-[(tert-butoxycarbonyl)amino]pentyl | C47H82N10O11S | 详情 | 详情 | |
| (VIII) | 42845 | 2-([(9H-fluoren-9-ylmethoxy)carbonyl][3-[(imino[[(2,2,5,7,8-pentamethyl-3,4,4a,8a-tetrahydro-2H-chromen-6-yl)sulfonyl]amino]methyl)amino]propyl]amino)acetic acid | C35H44N4O7S | 详情 | 详情 | |
| (IX) | 42846 | tert-butyl (5R,8R)-5-[([(1R)-1-[[(2R)-2-(aminocarbonyl)pyrrolidinyl]carbonyl]-4-[(imino[[(2,2,5,7,8-pentamethyl-3,4,4a,8a-tetrahydro-2H-chromen-6-yl)sulfonyl]amino]methyl)amino]butyl]amino)carbonyl]-8-[4-[(tert-butoxycarbonyl)amino]butyl]-17-imino-7 | C67H114N14O15S2 | 详情 | 详情 |
合成路线2
该中间体在本合成路线中的序号：(IV)The deprotection of the resin (I) with piperidine in DMF gives the amino-resin (II), which is condensed with N-Fmoc-L-proline (III) by means of diisopropylcarbodiimide (DIC) in DMF to yield the anchored proline (IV). The deprotection of (IV) with piperidine in DMF affords compound (V) with a free NH group, which is condensed with 2-bromoacetic acid (VI) by means of DIC DMF to provide the bromoacetyl proline resin (VII). The condensation of (VII) with 6-(2-aminoethylamino)pyridine-3-carbonitrile (VIII) in DMSO to give the resin anchored precursor (IX), which is finally cleaved by means of trifluoroacetic anhydride (TFAA) in THF to furnish the target pyrrolidine-carbonitrile. Alternatively, the acylation of L-prolinamide (X) with 2-bromoacetyl bromide (XI) by means of TEA and DMAP in dichloromethane gives the 1-(2-bromoacetyl)-L-prolinamide (XII), which is dehydrated by means of TFAA in dichloromethane to yield the pyrrolidine-carbonitrile (XIII). Finally, this compound is condensed with 6-(2-aminoethylamino)pyridine-3-carbonitrile (VIII) in THF to furnish the target pyrrolidine-carbonitrile.
| 【1】 Mangold, B.L.; Mone, M.D.; Dunning, B.E.; Russell, M.E.; Brinkman, J.A.; Weldon, S.C.; Hughes, T.E.; Naderi, G.B.; Villhauer, E.B.; 1-[2-[(5-Cyanopyridin-2-yl)amino]-ethylamino]acetyl-2-(S)-pyrrolidine-carbonitrile: A potent, selective, and orally bioavailable dipeptidyl peptidase IV inhibitor with antihyperglycemic properties. J Med Chem 2002, 45, 12, 2362. |
| 【2】 Villhauer, E.B. (Novartis AG); N-Substd. 2-cyanopyrrolidines. JP 2000511559; WO 9819998 . |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (V),(X) | 36137 | (2S)-2-pyrrolidinecarboxamide;L-prolinamide | 7531-52-4 | C5H10N2O | 详情 | 详情 |
| (VII),(XII) | 54331 | (2S)-1-(2-bromoacetyl)-2-pyrrolidinecarboxamide | n/a | C7H11BrN2O2 | 详情 | 详情 |
| (I) | 28722 | 9H-fluoren-9-ylmethyl carbamate | 84418-43-9 | C15H13NO2 | 详情 | 详情 |
| (III) | 34762 | (2S)-1-[(9H-fluoren-9-ylmethoxy)carbonyl]-2-pyrrolidinecarboxylic acid | 71989-31-6 | C20H19NO4 | 详情 | 详情 |
| (IV) | 42841 | 9H-fluoren-9-ylmethyl (2R)-2-(aminocarbonyl)-1-pyrrolidinecarboxylate | C20H20N2O3 | 详情 | 详情 | |
| (VI) | 23660 | 2-Bromoacetic acid | 79-08-3 | C2H3BrO2 | 详情 | 详情 |
| (VIII) | 54332 | 6-[(2-aminoethyl)amino]nicotinonitrile | n/a | C8H10N4 | 详情 | 详情 |
| (IX) | 54333 | (2S)-1-[2-({2-[(5-cyano-2-pyridinyl)amino]ethyl}amino)acetyl]-2-pyrrolidinecarboxamide | n/a | C15H20N6O2 | 详情 | 详情 |
| (XI) | 14005 | 2-Bromoacetyl bromide; Bromoacetyl bromide | 598-21-0 | C2H2Br2O | 详情 | 详情 |
| (XIII) | 54334 | (2S)-1-(2-bromoacetyl)-2-pyrrolidinecarbonitrile | n/a | C7H9BrN2O | 详情 | 详情 |
合成路线3
该中间体在本合成路线中的序号：(III)The condensation of protected L-proline (I) with RINK RESIN (II) by means of TBTU, HOBT and DIEA in DMF gives the protected, rein bounded proline (III), which is deprotected by means of piperidine in DMF to yield the resin bounded proline (IV). The condensation of (IV) with 2-bromoacetic acid (V) by means of DIC in the same solvent affords the acyl proline (VI), which is treated with ethylene-1,2-diamine (VII) to provide the aminoacetyl proline (VIII). The condensation of (VIII) with 2-acetyldimedone (IX) gives the regioselectively monoprotected diaminoproline compound (X), which is treated with Boc2O and DIEA in dioxane to protect the secondary amino group of (X) and yield (XI). The selective elimination of the dimedone protecting group with hydrazine in DMF affords compound (XII) selectively monoprotected at the secondary amino group, which is condensed with 6-chloropyridine-3-carbonitrile (XIII) by means of DIEA in NMP to provide the resin adduct (XIV). The cleavage of the resin group of (XIV) by means of TFA and TFAA in dichloromethane takes place with simultaneous dehydration of the carboxamide group and removal of the Boc protecting group affording the trifluoroacetamido derivative (XV). Finally, the trifluoroacetyl group is removed by means of NH3 in aqueous methanol to give rise to the target pyridine carbonitrile derivative.
| 【1】 Willand, N.; et al.; Solid and solution phase syntheses of the 2-cyanopyrrolidide DPP-IV inhihitor NVP-DPP728. Tetrahedron 2002, 58, 28, 5741. |
| 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) | 34762 | (2S)-1-[(9H-fluoren-9-ylmethoxy)carbonyl]-2-pyrrolidinecarboxylic acid | 71989-31-6 | C20H19NO4 | 详情 | 详情 |
| (III) | 42841 | 9H-fluoren-9-ylmethyl (2R)-2-(aminocarbonyl)-1-pyrrolidinecarboxylate | C20H20N2O3 | 详情 | 详情 | |
| (IV) | 36137 | (2S)-2-pyrrolidinecarboxamide;L-prolinamide | 7531-52-4 | C5H10N2O | 详情 | 详情 |
| (V) | 23660 | 2-Bromoacetic acid | 79-08-3 | C2H3BrO2 | 详情 | 详情 |
| (VI) | 54331 | (2S)-1-(2-bromoacetyl)-2-pyrrolidinecarboxamide | n/a | C7H11BrN2O2 | 详情 | 详情 |
| (VII) | 14754 | ethylenediamine;1,2-Diaminoethane;ethane-1,2-diamine；1,2-Ethanediamine | 107-15-3 | C2H8N2 | 详情 | 详情 |
| (VIII) | 57168 | (2S)-1-{2-[(2-aminoethyl)amino]acetyl}-2-pyrrolidinecarboxamide | C9H18N4O2 | 详情 | 详情 | |
| (IX) | 57169 | 2-(1-hydroxyethylidene)-5,5-dimethyl-1,3-cyclohexanedione | C10H14O3 | 详情 | 详情 | |
| (X) | 57170 | (2S)-1-{2-[(2-{[1-(4,4-dimethyl-2,6-dioxocyclohexylidene)ethyl]amino}ethyl)amino]acetyl}-2-pyrrolidinecarboxamide | C19H30N4O4 | 详情 | 详情 | |
| (XI) | 57171 | tert-butyl 2-[(2S)-2-(aminocarbonyl)pyrrolidinyl]-2-oxoethyl(2-{[1-(4,4-dimethyl-2,6-dioxocyclohexylidene)ethyl]amino}ethyl)carbamate | C24H38N4O6 | 详情 | 详情 | |
| (XII) | 57172 | tert-butyl 2-[(2S)-2-(aminocarbonyl)pyrrolidinyl]-2-oxoethyl(2-aminoethyl)carbamate | C14H26N4O4 | 详情 | 详情 | |
| (XIII) | 57164 | 2-Chloro-5-cyanopyridine; 6-Chloro-3-cyanopyridine; 6-Chloronicotinonitrile | 33252-28-7 | C6H3ClN2 | 详情 | 详情 |
| (XIV) | 57173 | tert-butyl 2-[(2S)-2-(aminocarbonyl)pyrrolidinyl]-2-oxoethyl{2-[(5-cyano-2-pyridinyl)amino]ethyl}carbamate | C20H28N6O4 | 详情 | 详情 | |
| (XV) | 57174 | N-{2-[(5-cyano-2-pyridinyl)amino]ethyl}-N-{2-[(2S)-2-cyanopyrrolidinyl]-2-oxoethyl}-2,2,2-trifluoroacetamide | C17H17F3N6O2 | 详情 | 详情 |