N-methyl-2-pyrrolidone → (S)-6-((cyclopropyl(3-methoxyphenyl)methyl)amino)-3-isopropylpyrimidine-2,4(1H,3H)-dione

関与物質

反応手順

A solution of 6-chloro-3-isopropylpyrimidine-2,4(1H,3H)-dione (1.3, 50 mg, 0.265 mmol), (S)-cyclopropyl-(3-methoxyphenyl)methylamine (Sigma-Aldrich, 104 mg, 0.587 mmol), and proton sponge (85 mg, 0.397 mmol) in NMP (0.5 mL) was stirred at 130° C. for 2 h. After cooling to room temperature, the mixture was purified by preparative RP-HPLC (Shimadzu, Prominence LC-20AP system equipped with a Phenomenex Gemini-NX C18 column), eluting with 20-90% CH3CN in H2O (both containing 0.1% TFA). The fractions containing pure compound were combined and lyophilized to give 10 mg (11%) of the title compound as a white solid. LC/MS: m/z (ES+) 330 (M+H)+. 1H-NMR (400 MHz, CD3OD): δ ppm 7.26 (t, J=7.8 Hz, 6H), 6.92-6.79 (m, 3H), 5.00 (m, 1H), 3.79 (s, 3H), 3.74 (d, J=8.6 Hz, 1H), 1.36 (d, J=7.0 Hz, 6H), 1.23-1.13 (m, 1H), 0.68-0.60 (m, 1H), 0.58-0.50 (m, 1H), 0.50-0.42 (m, 1H), 0.41-0.34 (m, 1H).

情報源と証拠