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Tert-butyl 3-oxopyrrolidine-1-carboxylate → 3-((R)-4-methyl-3-oxo-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-ylamino)-pyrrolidine-1-carboxylic acid tert-butyl ester

HRID 519138
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 519138
[NH2:1][C:2]1[CH:3]=[C:4]2[C:13](=[CH:14][CH:15]=1)[O:12][CH2:11][C:10]1[N:5]2[C@H:6]([CH3:17])[C:7](=[O:16])[NH:8][N:9]=1.O=[C:19]1[CH2:23][CH2:22][N:21]([C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])[CH2:20]1.C([BH3-])#N.[Na+]>C(O)(=O)C>[C:27]([O:26][C:24]([N:21]1[CH2:22][CH2:23][CH:19]([NH:1][C:2]2[CH:3]=[C:4]3[C:13](=[CH:14][CH:15]=2)[O:12][CH2:11][C:10]2[N:5]3[C@H:6]([CH3:17])[C:7](=[O:16])[NH:8][N:9]=2)[CH2:20]1)=[O:25])([CH3:30])([CH3:28])[CH3:29]
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Komponenten

5

Edukt 3

HCID 471360Tert-butyl 3-oxopyrrolidine-1-carboxylateHCID 5003444Sodium cyanoborohydrideHCID 86727520(R)-6-amino-4-methyl-2,10-dihydro-9-oxa-1,2,4a-triaza-phenanthren-3-one

Produkt 1

HCID 867275283-((R)-4-methyl-3-oxo-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-ylamino)-pyrrolidine-1-carboxylic acid tert-butyl esterAusbeute 92 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 176Acetic AcidLösungsmittel

Versuchsvorschrift

A solution of (R)-6-amino-4-methyl-2,10-dihydro-9-oxa-1,2,4a-triaza-phenanthren-3-one (Example #148, Step D, 2.4 g, 10.32 mmol) and tert-butyl 3-oxopyrrolidine-1-carboxylate (Aldrich, 2.0 g, 6.23 mmol) was stirred at 15° C. for 10 min and then acetic acid (7 mL) was added. The reaction mixture was stirred for 30 min and sodium cyanoborohydride (0.68 g, 11 mmol) was added. The reaction mixture was stirred at ambient temperature overnight then concentrated in vacuo. The residue was purified by column chromatography on silica gel (eluting with 100% EtOAc) to give 3-((R)-4-methyl-3-oxo-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-ylamino)-pyrrolidine-1-carboxylic acid tert-butyl ester (2.3 g, 53%) as a yellow solid. 1H-NMR (400 MHz, DMSO-d6): δ 10.71 (s, 1H), 6.75 (d, J=8.4 Hz, 1H), 6.42 (s, 1H), 6.20 (d, J=8.4 Hz, 1H), 5.63-5.53 (m, 1H), 4.73 (m, 1H), 4.52-4.41 (m, 2H), 4.06-3.99 (m, 1H), 3.62-3.37 (m, 2H), 3.15-2.92 (m, 1H), 2.10 (m, 1H), 1.64 (m, 1H), 1.38 (s, 9H), 1.30 (m, 3H). LCMS (Table 1, Method 2) Rt=1.059 min.; MS m/z: 424 [M+Na]+.

Aufarbeitung

  1. stirringThe reaction mixture was stirred at ambient temperature overnight
  2. concentrationthen concentrated in vacuo
  3. customThe residue was purified by column chromatography on silica gel (eluting with 100% EtOAc)

Quellen und Nachweise

ORD-Eintrag
ord-060ca93b6f3f4b0abe0751e8cf5f79cf
Quelldatensatz
uspto-grants-2015_08
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09115151B2

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