Sugar-responsive medicament delivery material and preparation method thereof
A sugar-responsive, drug-based technology, applied in the field of sugar-responsive polymer drug delivery materials and its preparation, can solve the problems of low recognition ability and poor selectivity of polyhydroxy substances, and achieve good biocompatibility
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Embodiment 1
[0024] 1) Add 1,1,1,-trimethylolpropane (6.5g, 48.4mmol), phenylboronic acid (5.9g, 48.4mmol), toluene 80 to a 250ml three-necked round bottom flask equipped with a water separator milliliter and appropriate amount of molecular sieves. Heating to toluene reflux, stirring for 4 hours, the system was concentrated and dried to obtain compound II.
[0025]
[0026] 2) Compound II (10g, 45mmol) was added to a 100ml round bottom flask equipped with a constant pressure dropping funnel, and triethylamine (5.44g, 54mmol) and 40mL of dry dichloromethane were added successively under the protection of N2, Under the protection of an ice bath, a solution of acryloyl chloride (4.88 g, 54 mmol) in dichloromethane (10 mL) was added dropwise, and reacted for 8 hours. The system was suction filtered and concentrated. Separated by column chromatography to obtain compound III.
[0027]
[0028] 3) Add polyethylene glycol monomethyl ether 2000 (0.0035mol, 7g), triethylamine (0.007mol, 0.97...
Embodiment 2
[0035] 1) with embodiment 1 step 1)
[0036] 2) with embodiment 1 step 2)
[0037] 3) with embodiment 1 step 3)
[0038] 4) Under inert gas protection, initiator IV-1 (0.1mmol), copper bromide (0.005mmol), cuprous bromide (0.1mmol), pentamethylene divinyltriamine (0.12mmol) and compound III (10 mmol) of anisole (1.8 mL) was reacted at 90° C. under nitrogen for 18 hours, concentrated, and precipitated in diethyl ether / n-hexane to obtain polymer I-2.
[0039]
[0040] In the formula, n=44, m=54
Embodiment 3
[0042] 1) with embodiment 1 step 1)
[0043] 2) with embodiment 1 step 2)
[0044] 3) with embodiment 1 step 3)
[0045] 4) Under the protection of inert gas, polymer IV-1 (0.1mmol), copper bromide (0.005mmol), cuprous bromide (0.1mmol), pentamethylene divinyltriamine (0.12mmol) and compound III (8 mmol) of anisole (2.2 mL) was reacted at 90° C. under nitrogen for 21 hours, concentrated, and precipitated in diethyl ether / n-hexane to obtain polymer I-3.
[0046]
[0047] I-3
[0048] In the formula, n=44, m=42
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