Method for increasing solubility of 10-hydroxycamptothecin, product prepared by the method and applications of the product
A technology of hydroxycamptothecin and water solubility, which is applied in the direction of non-active ingredient medical preparations, medical preparations containing active ingredients, drug combinations, etc., which can solve the problem of reducing the anti-tumor activity of drugs, prolonging the administration time, and toxic and side effects Major problems, to achieve the effect of reducing the time and frequency of clinical administration, shortening the course of treatment, and simple methods
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Embodiment 1
[0018] Example 1: Screening of 10-hydroxycamptothecin-seven-membered cucurbit inclusion complex process conditions
[0019] (1) Determine the optimal feed ratio (also known as the stoichiometric ratio) between the seven-membered cucurbitan and 10-hydroxycamptothecin
[0020] In four 100mL round-bottomed flasks, add about 0.5g seven-membered cucurbitan ring respectively, then add a certain amount of 10-hydroxycamptothecin respectively, so that the metering ratio (n Q[7] :n HCPT ) were 1:1, 2:1, 3:1, 4:1, respectively, and finally about 85mL of hydrochloric acid solution with a pH of 2.0 was added and fully stirred for 4 hours at a constant temperature of 40~45°C. After the reaction was completed, the solution in the round bottom flask was filtered while hot to remove undissolved precipitates to obtain a clear and translucent yellow-green filtrate. Then the filtrate was concentrated and dried at 40-45°C, scraped out and weighed, and the yield and inclusion rate were calcula...
Embodiment 2
[0032] Example 2: Preparation of 10-hydroxycamptothecin-seven-membered cucurbit ring solid inclusion complex by co-evaporation
[0033] Weigh a certain amount of seven-membered cucurbit ring and hydroxycamptothecin (the stoichiometric ratio n Q[7] / n [HCPT] =3:1 Put it into a 100mL round bottom flask, add about 85mL of hydrochloric acid solution with a pH of 2.0, and stir fully at a constant temperature of 40~45°C for 4h. After the reaction was completed, the solution in the round bottom flask was filtered while hot to remove undissolved precipitates to obtain a clear and translucent yellow-green filtrate. Then the filtrate was evaporated to dryness by rotary evaporation, dried at 40-45°C, scraped off and weighed to obtain the seven-membered cucurbitanyl-hydroxycamptothecin solid inclusion compound.
Embodiment 3
[0034] Example 3: Preparation of 10-hydroxycamptothecin-seven-membered cucurbit ring solid inclusion compound by grinding method
[0035] Weigh the stoichiometric ratio (n Q[7] :n HCPT ) with a ratio of 3:1 of Q[7] and HCPT solids were placed in an agate mortar, added about 1 mL of hydrochloric acid solution with a pH of 2.0, ground for 1 hour, and then dried in an oven at 40-45 °C to obtain .
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