A lycobetaine derivative
A technology of lycorine oxide and compound, which is applied in the directions of organic chemistry, drug combination, carboxylate preparation, etc., can solve the problems of adverse reactions, easy generation of drug resistance, unsatisfactory therapeutic effect, etc., and achieves the effect of practical therapeutic activity
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Embodiment 1
[0048] Dissolve 0.266 g (1 mmol) of the compound lycorine oxide and 0.12 g (1 mmol) of maleic acid in 10 ml of boiling ethanol. The hot solution was filtered through diatomaceous earth, then slowly cooled under gentle stirring, and stood for several hours at a temperature of 0-5°C to precipitate lycorine oxide maleate crystals, and lycorine oxide maleate was filtered out. Salt crystals were washed with cold ethanol and dried under vacuum at 50°C to obtain 0.38 g of product.
Embodiment 2
[0050] Lycorine oxide maleate
[0051] Stir 0.26 g of the compound lycorine oxide maleate and 0.12 g of maleic acid in 10 ml of refluxing ethanol until all the solids are dissolved. Add activated carbon, filter the hot solution through diatomaceous earth, and cool down to room temperature while stirring. Stand for several hours in a temperature environment of 0-5°C, precipitate lycorine oxide maleate crystals, filter out lycorine oxide maleate crystals, wash with cold ethanol and dry under vacuum at 50°C, Yield 0.32 g of product.
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