Medicinal composition for intestinal tract cleaning
A intestinal cleansing and composition technology, which is applied in the field of pharmaceutical compositions for intestinal cleansing, can solve the problems of expensive L-glucose, difficult separation of L-glucose, and low yield, so as to improve compliance and reduce use costs , Take convenient and quick effect
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Embodiment 1
[0025] Add 2500ml of an aqueous solution containing 639.7g of sodium cyanide (pH 11.53) into the nitrogen replacement container for 10 minutes, then cool the solution to 7°C, slowly add concentrated acetic acid to adjust the pH to 7.94, and the temperature is 16°C. Then 1666g of 60wt% L-arabinose aqueous solution was added, concentrated acetic acid was added again to adjust the pH value to 8.1, and the reaction was carried out at 23°C. After cooling for 1.25h, 385ml of concentrated sulfuric acid was added to adjust the pH to 2.05. Product analysis showed that the conversion rate of L-arabinose was 99.4%.
[0026] The cyanide product was added to the nitrogen-protected hydrogenation tank, and 500 g of 5 wt % palladium barium sulfate catalyst was added. Sulfuric acid was added to control the pH value of the hydrogenation reaction at 2.0. After the reaction does not absorb hydrogen, the catalyst is removed by filtration, and the dissolved salt is removed by ion exchange to obta...
Embodiment 2~ Embodiment 11
[0031] Prepare the mixture of L-glucose and L-mannose in the following ratio (see Table 2), and the intestinal cleansing effect obtained is shown in Table 3:
[0032] The ratio of the pharmaceutical composition in Table 2 Embodiment 2~Example 11
[0033]
[0034] For the oral preparation for intestinal cleansing described in Example 2, the proportion of the pharmaceutical composition is 68wt%; the proportion of water is 32wt%, and the proportion of L-glucose in the pharmaceutical composition is 21.4wt%; L-mannose Accounting for the proportion of the pharmaceutical composition is 78.6wt%. Similarly, see Table 2 for the proportions of each component in Example 3 to Example 11.
[0035] Table 3 Comparison of intestinal cleansing effects of groups A and B in Example 2 to Example 11
[0036]
[0037] The above results show that the combination of L-glucose and L-mannose has a good colon cleansing effect, which is better than polyethylene glycol electrolyte powder (Heshuang)...
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