Trimethylsilyl triflate → (2R,3R,4R,5R)-4-(Acetyloxy)-2-[6-[(2,2-diphenylethyl)amino]-2-({[2-(1-piperidinyl)ethyl]amino}carbonyl)-9H-purin-9-yl]-5-(2-ethyl-2H-tetrazol-5-yl)tetrahydro-3-furanyl acetate

HRID 1168298ノート

反応式

HRID 1168298 の反応式
[C:1]1([CH:7]([C:30]2[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=2)[CH2:8][NH:9][C:10]2[N:18]=[C:17]([C:19]([NH:21][CH2:22][CH2:23][N:24]3[CH2:29][CH2:28][CH2:27][CH2:26][CH2:25]3)=[O:20])[N:16]=[C:15]3[C:11]=2[N:12]=[CH:13][NH:14]3)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[C:36]([O:39][C@H:40]1[C@@H:44]([O:45][C:46](=[O:48])[CH3:47])[CH:43](OC(=O)C)[O:42][C@@H:41]1[C:53]1[N:54]=[N:55][N:56]([CH2:58][CH3:59])[N:57]=1)(=[O:38])[CH3:37].C[Si](OS(C(F)(F)F)(=O)=O)(C)C>ClC(Cl)(Cl)C.C1(C)C=CC=CC=1.C(OCC)(=O)C>[C:46]([O:45][C@@H:44]1[C@H:40]([O:39][C:36](=[O:38])[CH3:37])[C@@H:41]([C:53]2[N:54]=[N:55][N:56]([CH2:58][CH3:59])[N:57]=2)[O:42][C@H:43]1[N:14]1[CH:13]=[N:12][C:11]2[C:15]1=[N:16][C:17]([C:19]([NH:21][CH2:22][CH2:23][N:24]1[CH2:29][CH2:28][CH2:27][CH2:26][CH2:25]1)=[O:20])=[N:18][C:10]=2[NH:9][CH2:8][CH:7]([C:1]1[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=1)[C:30]1[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1)(=[O:48])[CH3:47]

参加物

7

反応物 3

HCID 65367Trimethylsilyl triflateHCID 11302289(2R,3R,4R)-4,5-bis(acetoxy)-2-(2-ethyl-2H-tetrazol-5-yl)tetrahydro-3-furanyl acetateHCID 1785234056-[(2,2-Diphenylethyl)amino]-N-[2-(1-piperidinyl)ethyl]-9H-purine-2-carboxamide

生成物 1

HCID 70023610(2R,3R,4R,5R)-4-(Acetyloxy)-2-[6-[(2,2-diphenylethyl)amino]-2-({[2-(1-piperidinyl)ethyl]amino}carbonyl)-9H-purin-9-yl]-5-(2-ethyl-2H-tetrazol-5-yl)tetrahydro-3-furanyl acetate収率 74.4%

試薬・触媒・溶媒 3

HCID 1140Toluene溶媒HCID 62781,1,1-Trichloroethane溶媒HCID 8857Ethyl Acetate溶媒

実験手順

A suspension of 6-[(2,2-diphenylethyl)amino]-N-[2-(1-piperidinyl)ethyl]-9H-purine-2-carboxamide (Preparation 11) (0.2 g, 0.42 mmol) in 1,1,1-trichloroethane (10 ml) was treated with N,O-bis(trimethylsilylacetamide) (0.65 ml, 2.65 mmol) and the mixture was heated under reflux for 2 hours. The solvent was removed under reduced pressure and the residue was twice azeotroped with toluene. The residue was dissolved in toluene (5 ml) and treated sequentially with a solution of (2R,3R,4R)-4,5-bis(acetyloxy)-2-(2-ethyl-2H-tetrazol-5-yl)tetrahydro-3-furanyl acetate (WO-A-9967265) (0.175 g, 0.51 mmol) in toluene (5 ml) and then trimethylsilyltriflate (0.1 ml, 0.55 mmol). The mixture was heated under reflux for 3 hours and then allowed to stand at room temperature overnight. The solution was diluted with ethyl acetate (40 ml), washed sequentially with saturated aqueous sodium hydrogen carbonate solution (20 ml) and brine (20 ml) and evaporated under reduced pressure. The residue was purified by column chromatography on silica gel eluting with a gradient system of dichloromethane:methanol (93:7 by volume) gradually changing to dichloromethane:methanol (90:10 by volume) to afford the title compound (0.235 g).

後処理

  1. temperaturethe mixture was heated
  2. temperatureunder reflux for 2 hours
  3. customThe solvent was removed under reduced pressure
  4. customthe residue was twice azeotroped with toluene
  5. dissolutionThe residue was dissolved in toluene (5 ml)
  6. temperatureThe mixture was heated
  7. temperatureunder reflux for 3 hours
  8. washwashed sequentially with saturated aqueous sodium hydrogen carbonate solution (20 ml) and brine (20 ml)
  9. customevaporated under reduced pressure
  10. customThe residue was purified by column chromatography on silica gel eluting with a gradient system of dichloromethane:methanol (93:7 by volume)

出典と根拠

ORDレコード
ord-e703f46d7d814bcfa2bf1f00241bfc02
出典データセット
uspto-grants-2003_09
特許番号
US06624158B2

反応ノート

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