Methyl morpholine oxide → (2s,5r)-2-((1r,3Ar,4s,7ar)-4-{[tert-butyl(dimethyl)silyl]oxy}-7a-methyloctahydro-1h-inden-1-yl)-5,6-dimethyl-6-[(trimethylsilyl)oxy]heptan-3-ol

HRID 388733

反応式

HRID 388733 の反応式
[Si:1]([O:8][C@H:9]1[CH2:17][CH2:16][CH2:15][C@@:14]2([CH3:18])[C@H:10]1[CH2:11][CH2:12][C@@H:13]2[C@H:19]([CH3:22])[CH2:20][OH:21])([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].C[N+]1([O-])CCOCC1.[CH3:31][Si:32]([CH3:50])([CH3:49])[O:33][C:34]([CH3:48])([CH3:47])[C@H:35]([CH3:46])[CH2:36]S(C1C=CC=CC=1)(=O)=O>ClCCl.[Ru]([O-])(=O)(=O)=O.C([N+](CCC)(CCC)CCC)CC>[Si:1]([O:8][C@H:9]1[CH2:17][CH2:16][CH2:15][C@@:14]2([CH3:18])[C@H:10]1[CH2:11][CH2:12][C@@H:13]2[C@@H:19]([CH:20]([OH:21])[CH2:36][C@@H:35]([CH3:46])[C:34]([CH3:48])([O:33][Si:32]([CH3:50])([CH3:31])[CH3:49])[CH3:47])[CH3:22])([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2]

参加物

6

反応物 3

HCID 82029Methyl morpholine oxideHCID 15230899(S)-2-((1R,3aR,4S,7aR)-4-((tert-butyldimethylsilyl)oxy)-7a-methyloctahydro-1H-inden-1-yl)propan-1-olHCID 68938726Trimethyl{[(2s)-1,1,2-trimethyl-3-(phenylsulfonyl)propyl]oxy}silane

生成物 1

HCID 68937095(2s,5r)-2-((1r,3Ar,4s,7ar)-4-{[tert-butyl(dimethyl)silyl]oxy}-7a-methyloctahydro-1h-inden-1-yl)-5,6-dimethyl-6-[(trimethylsilyl)oxy]heptan-3-ol

試薬・触媒・溶媒 2

HCID 178419074HCID 178419074、化合物触媒HCID 6344Dichloromethane溶媒

実験手順

The compound of Example 10E (200 mg, 0.61 mmol) was dissolved in 2 mL of dichloromethane; 100 mg of 4 Å molecular sieves were added, followed by 15 mg of tetrapropylammonium perruthenate and 75 mg of 4-methylmorpholine N-oxide. The mixture was stirred for 2 hours at ambient temperature, and then filtered through diatomaceous earth to removed solids. The crude product was purified by silica gel chromatography using an Analogix IntelliFlash™ 40, eluting with a gradient of 5% to 30% ethyl acetate in hexanes. The compound of Example 10C (200 mg, 0.63 mmol) was combined with this aldehyde according to the coupling procedure described by Kutner et al. in J. Org. Chem. 1988, 53, 3450-3457. The named product, the result of desulfurization without elimination, was isolated after chromatographic purification using an Analogix Intelliflash 280™, eluting with a gradient of 0% to 50% ethyl acetate in hexanes.

後処理

  1. addition100 mg of 4 Å molecular sieves were added
  2. filtrationfiltered through diatomaceous earth
  3. customto removed solids
  4. customThe crude product was purified by silica gel chromatography
  5. washeluting with a gradient of 5% to 30% ethyl acetate in hexanes
  6. customThe named product, the result of desulfurization without elimination
  7. customwas isolated
  8. customafter chromatographic purification
  9. washeluting with a gradient of 0% to 50% ethyl acetate in hexanes

出典と根拠

ORDレコード
ord-f868793635d34e4aa7c2ef1e891aa1b1
出典データセット
uspto-grants-2013_02
特許番号
US08377913B2

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