反応 #1596985

反応方程式

Compound 41

7-Allyl-2-amino-6-chloro-9-(2′,3′,5′-tri-O-acetyl-β-D-ribofuranosyl)-7,9-dihydro-purin-8-one

→

42

収率 60.0%

7-Allyl-2-amino-9-(2′,3′,5′-tri-O-acetyl-β-D-ribofuranosyl)-7,9-dihydro-purin-8-one

収率 60.0%

溶媒

acetic acid

反応条件

後処理

1. 1
   ろ過The suspended particles were filtered off
2. 2
   濃縮the filtrate concentrated under vacuum
3. 3
   その他The residue was purified by flash chromatography
4. 4
   その他The solvent was removed

実験手順

Compound 41 (0.27 g, 0.56 mmol) was dissolved in acetic acid and Zn—Cu couple was added to the solution. The mixture was heated at 70° C. for 18 h. The suspended particles were filtered off and the filtrate concentrated under vacuum. The residue was purified by flash chromatography using 10% to 100% gradient of ethyl acetate in hexanes. The solvent was removed to give 150 mg (60%) of 42 as off-white solid: 1H NMR (400 MHz, CDCl3) δ 6.05 (t, J=4.0 Hz, 1H), 6.03 (d, J=4.0 Hz, 1H), 5.87 (t, J=6.0 Hz, 1H), 5.83 (m, 1H), 5.48 (br s, 2H), 5.33 (s, 1H), 5.29 (d, J=5.6 Hz, 1H), 4.49 (d, J=3.2 Hz, 1H), 4.46 (d, J=3.2 Hz, 1H), 4.41 (d, J=5.6 Hz, 2H), 4.27 (m, 2H), 2.12 (s, 3H), 2.10 (s, 3H), 2.05 (s, 3H); MS (+)-ES [M+H]+ 450.0 m/z.

出典