Triphenylphosphine → (S)-2-[bis-(t-butoxycarbonyl)amino]-9-[3-benzyloxy-2-(diethoxyphosphorylmethoxy)propoxy]-6-methoxypurine

HRID 6269ノート

反応式

HRID 6269 の反応式
[CH2:1]([O:8][CH2:9][C@@H:10]([CH2:21][OH:22])[O:11][CH2:12][P:13](=[O:20])([O:17][CH2:18][CH3:19])[O:14][CH2:15][CH3:16])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[C:42]([O:46][C:47]([N:49]([C:62]([O:64][C:65]([CH3:68])([CH3:67])[CH3:66])=[O:63])[C:50]1[N:58]=[C:57]2[C:53]([N:54]=[CH:55][N:56]2O)=[C:52]([O:60][CH3:61])[N:51]=1)=[O:48])([CH3:45])([CH3:44])[CH3:43].N(C(OCC)=O)=NC(OCC)=O>C1COCC1>[C:65]([O:64][C:62]([N:49]([C:47]([O:46][C:42]([CH3:45])([CH3:44])[CH3:43])=[O:48])[C:50]1[N:58]=[C:57]2[C:53]([N:54]=[CH:55][N:56]2[O:22][CH2:21][C@@H:10]([O:11][CH2:12][P:13]([O:17][CH2:18][CH3:19])([O:14][CH2:15][CH3:16])=[O:20])[CH2:9][O:8][CH2:1][C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=2)=[C:52]([O:60][CH3:61])[N:51]=1)=[O:63])([CH3:68])([CH3:67])[CH3:66]

参加物

6

反応物 4

HCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 145239662-[Bis-(t-butoxycarbonyl)amino]-9-hydroxy-6-methoxypurineHCID 53890153diethyl (R)-[2-benzyloxy-1-(hydroxymethyl)ethoxy]methylphosphonate

生成物 1

HCID 53696618(S)-2-[bis-(t-butoxycarbonyl)amino]-9-[3-benzyloxy-2-(diethoxyphosphorylmethoxy)propoxy]-6-methoxypurine収率 88.6%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

To a stirred solution of diethyl (R)-[2-benzyloxy-1-(hydroxymethyl)ethoxy]methylphosphonate (1.0 g, 3 mmol), triphenylphosphine (1.18 g, 4.5 mmol) and 2-[bis-(t-butoxycarbonyl)amino]-9-hydroxy-6-methoxypurine (1.15 g, 3 mmol) in dry THF (20 ml), cooled in ice and under a mitrogen atmosphere, was added, dropwise, diethyl azodicarboxylate (0.71 ml, 4.5 mmol). The resulting solution was allowed to warm to ambient temperature and left stirring for 16 hours. The solvent was evaporated under reduced pressure and the residue obtained chromatographed on silica gel using hexane/ethyl acetate 2:1 as eluant. The eluant was changed as follows: hexane/ethyl acetate 1:1, hexane/ethyl acetate 1:2 and finally to ethyl acetate to give (S)-2-[bis-(t-butoxycarbonyl)amino]-9-[3-benzyloxy-2-(diethoxyphosphorylmethoxy)propoxy]-6-methoxypurine as a colourless oil (1.85 g, 88%).

後処理

  1. additionwas added
  2. waitleft
  3. customThe solvent was evaporated under reduced pressure
  4. customthe residue obtained
  5. customchromatographed on silica gel

出典と根拠

ORDレコード
ord-5bc3817b8fb84fdcb2e908b50be90647
出典データセット
uspto-grants-1993_09
特許番号
US05247085

反応ノート

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