反应详情

Allyl 2-[[(1R,2R)-2-[[trans-2-[(1E,3E)-4-(4-cyano-2-fluorophenyl)-1,3-butadienyl]-1,3-dioxan-5-yl]thio]-1-(2,4-difluorophenyl)-1-[(1H-1,2,4-triazol-1-yl)methyl]propoxy]carbonyl]benzyl succinate (150 mg, 1.84×10-4 mol) obtained from Example 19-(2) and bis(triphenylphosphine)dichloropalladium (2 mg) were dissolved in dichloromethane (1.5 ml). To the mixture was added water (0.1 ml), and tributyltin hydride (80 mg, 2.7×10−4 mol) was slowly added thereto over a period of 5 minutes at room temperature. The resulting mixture was stirred at room temperature for 15 minutes further, and then hexane was added thereto. The liberated oily insoluble material was separated by removing the supernatant liquid slowly. The insoluble residue was further washed twice with hexane. The oily residue was subjected to chromatography on a silica gel (8 g) column (eluent; ethyl acetate), and then purified by recycle preparative HPLC [LC-908; Japan Analytical Industry Co., Ltd.; GPC column JAIGEL-1H (20 mm i.d.×600 mm) and JAIGEL-2H (20 mm i.d.×600 mm) connected in series for use; solvent, chloroform] to afford the title compound (123.9 mg, 87% yield) as a colorless amorphous solid.

1. additionwas slowly added
2. customThe liberated oily insoluble material was separated
3. customby removing the supernatant liquid slowly
4. washThe insoluble residue was further washed twice with hexane
5. custompurified by recycle preparative HPLC [LC-908; Japan Analytical Industry Co., Ltd.; GPC column JAIGEL-1H (20 mm i.d.×600 mm) and JAIGEL-2H (20 mm i.d.×600 mm) connected in series for use; solvent, chloroform]