With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.59702-07-7,1-Methylpiperazin-2-one,as a common compound, the synthetic route is as follows.
Example 0723 Triethylamine was added to a solution of hydrochloride (23 mg) of 1-methylpiperazin-2-one in dichloromethane (1 mL), followed by adjusting to pH 8. 3-(4-(6-((5-Isopropylpyridazin-3-yl)amino)-1,5-naphthyridin-3-yl)-1H-pyrazol-1-yl)propanal (19 mg), acetic acid (0.01 mL), and sodium triacetoxyborohydride (42 mg) were added thereto, followed by stirring at room temperature for 1 hour. The solvent was distilled off under reduced pressure, and the obtained residue was purified by silica gel column chromatography (ethyl acetate-methanol, NH silica), thereby obtaining 4-(3-(4-(6-((5-isopropylpyridazin-3-yl)amino)-1,5-naphthyridin-3-yl)-1H-pyrazol-1-yl)propyl)-1-methylpiperazin-2-one (4.4 mg) as a white solid. 1H-NMR (DMSO-d6) delta: 10.70 (1H, s), 9.05 (1H, d, J=1.8 Hz), 8.86 (1H, d, J=2.1 Hz), 8.72 (1H, s), 8.52 (1H, s), 8.24- 8.18 (3H, m), 7.70 (1H, d, J=9.3 Hz), 4.24-4.17 (2H, m), 3.30-3.25 (2H, m), 3.09-2.98 (1H, m), 2.87-2.83 (2H, m), 2.80 (3H, s), 2.66-2.60 (2H, m), 2.40-2.32 (2H, m), 2.07-1.98 (2H, m), 1.34 (6H, d, J=7.2 Hz). MS m/z (M+H): 486., 59702-07-7
As the paragraph descriping shows that 59702-07-7 is playing an increasingly important role.
Reference£º
Patent; FUJIFILM Corporation; FURUYAMA, Hidetomo; KURIHARA, Hideki; TERAO, Takahiro; NAKAGAWA, Daisuke; TANABE, Shintaro; KATO, Takayuki; YAMAMOTO, Masahiko; SEKINE, Shinichiro; MASHIKO, Tomoyuki; INUKI, Shinsuke; UEDA, Satoshi; US2015/322063; (2015); A1;,
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