Composition of transiron protein and biological reducing agent and its preparation method
A transferrin and conjugate technology, applied in the directions of drug combination, peptide/protein components, nitro compound active ingredients, etc., can solve problems such as poor targeting and allergic reactions, and achieve the effect of improving curative effect and reducing tolerance
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[0018] 51.3 mg of glutaric anhydride was added to 10 ml of tetrahydrofolic acid containing 50 mg, and the mixture was heated to 60° C. under nitrogen protection for 10 hours. Distilled after the reaction was complete. The residue was dissolved in 2 ml of methanol, and methanol was used as the mobile phase, and passed through a Sephadex L-20 (2.5×97 cm) chromatographic column for column chromatography. The fractions were evaporated to dryness to obtain G-MMC (glutaraldehyde esterified mitomycin). Dissolve 56.0 mg of G-MMC in 3.4 ml of acetonitrile, add 21.6 mg of N-hydroxysuccinimide (HOSu) and 155.6 mg of DDC, and the mixture is 2 Stir at 4°C for 48 hours under protected conditions. Then 7ml of ice water was added, filtered, the filtrate was extracted three times with 10ml of chloroform, and the chloroform was evaporated to dryness to obtain MMC-G-OSu, which was recrystallized from n-hexyl butyrate to obtain a purple powder.
[0019] Dissolve 30 mg of transferrin in 3 ml of...
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