3-Oxo-azetidine-1-carboxylic acid tert-butyl ester → HCID 86727290, 화합물

HRID 518949노트

반응식

HRID 518949 반응식
[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[CH:6]([CH3:17])[C:7](=[O:16])[NH:8][N:9]=1.[C:18]([O:22][C:23]([N:25]1[CH2:28][C:27](=O)[CH2:26]1)=[O:24])([CH3:21])([CH3:20])[CH3:19].C([BH3-])#N.[Na+]>CO.CC(O)=O>[C:18]([O:22][C:23]([N:25]1[CH2:28][CH:27]([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[CH:6]([CH3:17])[C:7](=[O:16])[NH:8][N:9]=2)[CH2:26]1)=[O:24])([CH3:21])([CH3:19])[CH3:20]

참가 물질

6

반응물 3

HCID 15194043-Oxo-azetidine-1-carboxylic acid tert-butyl esterHCID 5003444Sodium cyanoborohydrideHCID 867272916-Amino-4-methyl-2,10-dihydro-9-oxa-1,2,4a-triaza-phenanthren-3-one

생성물 1

HCID 86727290HCID 86727290, 화합물수율 54%

시약·촉매·용매 2

HCID 176Acetic Acid용매HCID 887Methanol용매

실험 절차

A solution of 6-amino-4-methyl-2,10-dihydro-9-oxa-1,2,4a-triaza-phenanthren-3-one (Preparation #2, Step E; 5 g, 21.6 mmol) and 3-oxo-azetidine-1-carboxylic acid tert-butyl ester (7.37 g, 43.1 mmol) in MeOH (90 mL) and HOAc (10 mL) was stirred at rt for 2 h. Sodium cyanoborohydride (2.7 g, 43.1 mmol) was added in portions and the resulting dark solution was stirred at rt for 2 h. The solvent was removed in vacuo and the residue was washed with aqueous Na2CO3 (100 mL) and extracted with EtOAc (4×100 mL). The combined organic phase was dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by column chromatography on silica gel (eluting with 10-50% EtOAc in petroleum ether) to give 3-(4-methyl-3-oxo-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-ylamino)-azetidine-1-carboxylic acid tert-butyl ester (4.48 g, 54%) as a solid. 1H NMR (CDCl3, 400 MHz): δ 8.28 (brs, 1H), 6.87 (d, J=8.4 Hz, 1H), 6.15 (s, 1H), 6.13 (d, J=8.4 Hz, 1H), 4.70 (m, 1H), 4.58 (d, J=13.2 Hz, 2H), 4.30 (m, 2H), 4.17 (m, 1H), 4.01 (m, 1H), 3.75 (m, 2H), 1.51 (d, J=6.8 Hz, 3H), 1.47 (s, 9H).

후처리

  1. customThe solvent was removed in vacuo
  2. washthe residue was washed with aqueous Na2CO3 (100 mL)
  3. extractionextracted with EtOAc (4×100 mL)
  4. dry with materialThe combined organic phase was dried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by column chromatography on silica gel (eluting with 10-50% EtOAc in petroleum ether)

출처 및 근거

ORD 기록
ord-24299e7ad3904713ba4fb71cb765e913
출처 데이터셋
uspto-grants-2015_08
특허 번호
US09115151B2

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