N,N-Diphenylcarbamic chloride → N2-isobutyryl-O6-diphenylcarbamoyl-3'-O-(methylthiomethyl)-5'-O-(tert-butyldimethylsilyl)-2'-deoxyguanosine

HRID 58512

反応式

HRID 58512 の反応式
[C:1]([NH:6][C:7]1[NH:8][C:9](=[O:34])[C:10]2[N:11]=[CH:12][N:13]([C:32]=2[N:33]=1)[C@@H:14]1[O:31][C@H:21]([CH2:22][O:23][Si:24]([C:27]([CH3:30])([CH3:29])[CH3:28])([CH3:26])[CH3:25])[C@@H:16]([O:17][CH2:18][S:19][CH3:20])[CH2:15]1)(=[O:5])[CH:2]([CH3:4])[CH3:3].[C:35]1([N:41]([C:45]2[CH:50]=[CH:49][CH:48]=[CH:47][CH:46]=2)[C:42](Cl)=[O:43])[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=1.C(N(CC)C(C)C)(C)C>N1C=CC=CC=1>[C:1]([NH:6][C:7]1[N:8]=[C:9]([O:34][C:42](=[O:43])[N:41]([C:45]2[CH:46]=[CH:47][CH:48]=[CH:49][CH:50]=2)[C:35]2[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=2)[C:10]2[N:11]=[CH:12][N:13]([C:32]=2[N:33]=1)[C@@H:14]1[O:31][C@H:21]([CH2:22][O:23][Si:24]([C:27]([CH3:29])([CH3:28])[CH3:30])([CH3:25])[CH3:26])[C@@H:16]([O:17][CH2:18][S:19][CH3:20])[CH2:15]1)(=[O:5])[CH:2]([CH3:4])[CH3:3]

参加物

5

反応物 3

HCID 65741N,N-Diphenylcarbamic chlorideHCID 81531DiisopropylethylamineHCID 136404885N2-isobutyryl-3'-O-(methylthiomethyl)-5'-O-(tert-butyldimethylsilyl)-2'-deoxyguanosine

生成物 1

HCID 86638828N2-isobutyryl-O6-diphenylcarbamoyl-3'-O-(methylthiomethyl)-5'-O-(tert-butyldimethylsilyl)-2'-deoxyguanosine収率 80%

試薬・触媒・溶媒 1

HCID 1049Pyridine溶媒

実験手順

To 1.0 g N2-isobutyryl-3′-O-(methylthimethyl)-5′-O-(tert-butyldimethylsilyl)-2′-deoxyguanosine (11, 1.95 mmol) dissolved in 22 mL dry pyridine were added diphenylcarbamoyl chloride (0.677 g, 2.92 mmol) and 1.02 mL N,N-diisopropylethylamine, and stirred at room temperature for 3 h under nitrogen atmosphere. The reaction mixture became dark red during this time. The solvent was removed under high vacuum, and product was then purified by silica gel column chromatography using EtOAc:hex/1:1 to 7:3 as mobile phase. The product 12 was isolated as yellowish powder (1.09 g, ˜80% yield; Rf=0.7, EtOAc:hex (1:1)). HR-MS: Obs. m/z 707.3068 calcd. for C35H47O6N6SiS 707.3047 [M+H]+. 1H-NMR (CDCl3): δH 8.25 (s, 1H), 7.94 (brs, 1H), 7.47-7.37 (m, 10H), 6.42 (m, 1H), 4.75 (m, 2H), 4.71 (m, 1H), 4.18 (m, 1H), 3.88-3.70 (m, 2H), 2.80 (m, 1H), 2.60 (m, 1H), 2.19 (s, 3H), 1.30 (d, J=7.2 Hz, 6H), 0.93 (s, 9H) and 0.14 (s, 6H) ppm.

後処理

  1. customThe solvent was removed under high vacuum, and product
  2. customwas then purified by silica gel column chromatography

出典と根拠

ORDレコード
ord-0eef73ecf2e6425296a94f969e3c9f64
出典データセット
uspto-grants-2016_09
特許番号
US09434989B2

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