反应详情

A solution of 2(R)-(3-chloro-4-methanesulfonyl-phenyl)-3-cyclopentyl-N-[5-(4-hydroxy-tetrahydropyran-4-yl-ethynyl)-pyrazin-2-yl]-propionamide (prepared as in Example 50, 200 mg, 0.376 mmol) in methanol (30 mL) was treated with 10% palladium on activated carbon (39 mg). The reaction mixture was then placed on a Parr shaker under a hydrogen atomsphere of 50 psi for 4 h. The mixture was filtered, and solvents were concentrated in vacuo. Flash chromatography (Merck Silica gel 60, 230–400 mesh, ethyl acetate) afforded 2(R)-(3-chloro-4-methanesulfonyl-phenyl)-3-cyclopentyl-N-[5-(4-hydroxy-tetrahydropyran-4-yl-ethyl)-pyrazin-2-yl]-propionamide (169 mg, 84%) as a fluffy solid: (ES)+-HRMS m/e calcd for C26H34ClN3O5S (M+H)+ 536.1981, found 536.1988.

1. filtrationThe mixture was filtered
2. concentrationsolvents were concentrated in vacuo