Prodrugs designed based on intestinal mct1 carrier protein and preparation method thereof
A prodrug and intestinal absorption technology, applied in the field of medicine, can solve the problems of low oral bioavailability, incomplete release of parent drug, poor permeability of anti-tumor drugs, etc., to improve oral bioavailability and increase patient compliance , improve the efficacy of the drug
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example 1
[0055] Example 1 gemcitabine-succinate monoester prodrug preparation (prodrug 1)
[0056] Dissolve 0.35g (3mmol) of succinic acid in 15ml of anhydrous dioxane, add 0.25g (2.5mmol) of triethylamine, dropwise add 0.28g (2.4mmol) of thionyl chloride, and vacuum the nitrogen after dropping Protected, refluxed at 110°C for 4h, concentrated the reaction solution under reduced pressure to obtain a light yellow oil, which was redissolved in 10ml DMF. 0.78 g (3.2 mmol) of gemcitabine was added, and 0.19 g (1.5 mmol) of triethylamine was added dropwise at room temperature. After the dropping was completed, the mixture was vacuumed under nitrogen protection and reacted overnight, and the reaction was complete as monitored by TLC. The reaction solution was concentrated under reduced pressure to obtain a reddish-brown oil. Column chromatography gave a white solid with a yield of 75%. MS(ESI): m / z=364[M+H + ]. The purity determined by HPLC was 97.5%. 1 H NMR (400MHz,D 2 O) δ7.73(d, J=...
example 4
[0061] Example 4 gemcitabine-suberate monoester prodrug preparation (prodrug 4)
[0062] Dissolve 0.61g (3mmol) of sebacic acid in 15ml of anhydrous dioxane, add 0.25g (2.5mmol) of triethylamine, then add 0.28g (2.4mmol) of thionyl chloride dropwise, and vacuum nitrogen after dropping Protected, refluxed at 110°C for 4h, concentrated the reaction solution under reduced pressure to obtain a light yellow oil, which was redissolved in 10ml DMF. 0.78 g (3.2 mmol) of gemcitabine was added, and 0.19 g (1.5 mmol) of triethylamine was added dropwise at room temperature. After the dropping was completed, the mixture was vacuumed under nitrogen protection and reacted overnight, and the reaction was complete as monitored by TLC. The reaction solution was concentrated under reduced pressure to obtain a reddish-brown oil. Column chromatography gave a white solid with a yield of 53%. MS(ESI): m / z=448[M+H + ]. The purity determined by HPLC was 97.6%. 1H NMR (400MHz, DMSO) δ11.81(s, 1H), ...
example 5
[0063] Example 5 gemcitabine-succinate prodrug preparation (prodrug 5)
[0064] Dissolve 0.35g (3mmol) of succinic acid in 15ml of anhydrous dioxane, add 0.25g (2.5mmol) of triethylamine, dropwise add 0.28g (2.4mmol) of thionyl chloride, and vacuum the nitrogen after dropping Protected, refluxed at 110°C for 4h, concentrated the reaction solution under reduced pressure to obtain a light yellow oil, which was redissolved in 10ml DMF. 0.39 g (1.6 mmol) of gemcitabine was added, and 0.09 g (0.9 mmol) of triethylamine was added dropwise at room temperature. After the dropping, vacuum was applied under nitrogen protection, and the reaction was carried out overnight, and the reaction was monitored by TLC to complete. The reaction solution was concentrated under reduced pressure to obtain a reddish-brown oil. Column chromatography gave a white solid with a yield of 55%. MS(ESI): m / z=464[M+H + ]. The purity determined by HPLC was 98.3%. 1 H NMR (400MHz, MeOD) δ8.01(s, 1H), 7.55(d...
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