Tetrahydroberberine phosphate drug co-crystal and preparation method thereof
A technology of tetrahydroberberine phosphate and tetrahydroberberine, which is applied in organic chemical methods, antibacterial drugs, organic chemistry, etc. The effect of improving solubility and improving inhibitory activity
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Embodiment 1
[0033] A tetrahydroberberine phosphate pharmaceutical co-crystal, tetrahydroberberine is the active ingredient of the drug, with disodium hydrogen phosphate as the precursor, a protonated tetrahydroberberine molecule, a phosphate radical and two sodium ions Together constitute the basic structural unit of the drug co-crystal, X-ray diffraction structure analysis shows that the formed drug co-crystal is a triclinic system with a space group of P -1 , its axial length a =7.2131(4) Å, b = 10.5184(7) Å, c = 15.2467(9) Å, axis angle α = 72.189(6)°, β = 80.338(5)°, gamma = 87.549(5)°, V = 1085.66(12) Å 3 , Z = 2.
[0034] The characteristic peaks of the XRD spectrum of the drug co-crystal appear at: 6.20°-6.65°, 7.16°-7.56°, 8.28°-8.48°, 9.96°-10.56°, 12.04°-12.44°, 16.68°-17.08°, 23.52°-23.92°, 25.32°-25.72°.
[0035] The infrared absorption spectrum measured by the KBr tablet of the drug cocrystal is at 519, 945, 1058, 1127, 1378, 1459, 1710, 2927, 2858 and 3134 cm ...
Embodiment 2
[0053] A preparation method of tetrahydroberberine phosphate drug cocrystal, adding 0.07 mmol of tetrahydroberberine and 0.45 mmol of disodium hydrogen phosphate to a mixed solution of 5 mL of ethanol and 5 mL of water, adjusting the pH to 4.0 with phosphoric acid, and ultrasonically After dissolving, slowly volatilize at room temperature to obtain tetrahydroberberine phosphate drug co-crystal.
Embodiment 3
[0055] A preparation method of tetrahydroberberine phosphate drug cocrystal, tetrahydroberberine 0.07 mmol and disodium hydrogen phosphate 0.45mmol are added in the mixed solution of isopropanol 5mL and water 5mL, adjust pH=5.0 with phosphoric acid , after ultrasonic dissolution, slowly volatilize at room temperature to obtain tetrahydroberberine phosphate drug co-crystal.
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