Pyrimidopyrimidine type derivative as well as preparation method and application thereof to medicines
A technology of pyrimidine and derivatives, applied in the field of chemical drugs, can solve problems such as fluid retention, weight gain, and decreased β-cell function
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Embodiment 1
[0029] 2,6,8-Trichloro-N-(4-thiamphenyl)phenyl)pyrimido[5,4- d ]pyrimidin-4-amine;
[0030] Add tetrachloropyrimido[5,4- d ]pyrimidine (0.65 g, 2.4 mmol), THF (5 mL) and H 2 O (0.6 mL). 4-Methylthioaniline (0.1 mL, 0.8 mmol) was added at 0 °C and the reaction was stirred at room temperature for 1 h. Join CH 2 Cl 2 (10 mL), mCPBA (0.36 g, 77%, 1.6 mmol) was added at 0°C, and the reaction was stirred overnight at room temperature. CH 2 Cl 2 Diluted, the organic phase was washed with saturated sodium thiosulfate solution, saturated sodium bicarbonate solution and saturated brine, dried over anhydrous sodium sulfate, and the solvent was removed by rotary evaporation, and the crude product was subjected to silica gel column chromatography (petroleum ether: ethyl acetate=5: 1) Purification gave a yellow solid, and the yield of the two-step reaction was 32%. 1 H-NMR (600 MHz, CDCl 3 ) δ (ppm): 9.12 (s, 1H), 8.20-8.00 (m, 4H), 3.10 (s, 3H).
Embodiment 2
[0032] 2,6,8-Trichloro-N-(2-fluoro-4-thiamphenicol)phenyl)pyrimido[5,4- d ]pyrimidin-4-amine;
[0033] Referring to the preparation method of Example 1. 1 H-NMR (600 MHz, CDCl 3 ) δ (ppm): 9.37 (s, 1H), 8.99(t, J = 8.5 Hz, 1H), 7.95-7.80 (m, 2H), 3.13 (s, 3H).
Embodiment 3
[0035] 2,6,8-Trichloro-N-(2-fluoro-4-cyano)phenyl)pyrimido[5,4- d ]pyrimidin-4-amine;
[0036] Referring to the preparation method of Example 1. 1 H-NMR (600 MHz, CDCl 3 ) δ (ppm): 9.37(s, 1H), 8.94(t, J = 8.3, 1H), 7.66(d, J = 8.6, 1H), 7.58(dd, J = 10.4, 1.7, 1H).
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