반응 #7967

반응 방정식

(2RS,9aSR)-9a-butyl-7-hydroxy-4-methyl-2-(2-oxo-ethyl)-1,2,9,9a-tetrahydro-3H-fluoren-3-one

NaBH4

→

(2RS,9aSR)-9a-butyl-7-hydroxy-2-(2-hydroxyethyl)-4-methyl-1,2,9,9a-tetrahydro-3H-fluoren-3-one

용매

2-propanol

반응 조건

후처리

1. 1
   기타The solvent was evaporated under vacuum
2. 2
   세척washed with 0.2N HCl (30 mL), 5% NaHCO3, and brine
3. 3
   건조dried over MgSO4
4. 4
   여과filtered
5. 5
   농축concentrated under vacuum to a gum (24 mg)
6. 6
   기타This material was purified by PLC on a 0.1×20×20 cm silica gel GF plate

실험 절차

A solution of (2RS,9aSR)-9a-butyl-7-hydroxy-4-methyl-2-(2-oxo-ethyl)-1,2,9,9a-tetrahydro-3H-fluoren-3-one (17 mg, 0.05 mmol) in 2-propanol (2 mL) was treated with NaBH4 (1.9 mg, 0.05 mmol) and the mixture was stirred at room temperature for 40 minutes. The solvent was evaporated under vacuum. The residue was taken up in EtOAc (60 mL), washed with 0.2N HCl (30 mL), 5% NaHCO3, and brine, dried over MgSO4, filtered, and concentrated under vacuum to a gum (24 mg). This material was purified by PLC on a 0.1×20×20 cm silica gel GF plate using 2:1 hexanes-EtOAc as developing solvent. The UV visible band at Rf 0.06-0.11 afforded (2RS,9aSR)-9a-butyl-7-hydroxy-2-(2-hydroxyethyl)-4-methyl-1,2,9,9a-tetrahydro-3H-fluoren-3-one as an oil.

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