Method for preparing stevioside
作者： Qiao Zhi , Sun Jiansong , Liao Jinxi , Liu Hui
DOI:
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摘要: The invention provides a convergent stevioside preparing method. method comprises the following steps: receptor, base and phase transfer catalyst are dissolved in solvent, arereacted at room temperature for 5 to 60 minutes, glycosyl donor 2 is added, reaction carried out 40 DEG C 10 18 hours, glycosidation product obtained with yield being 80to 85%, protecting group removed obtain high-purity compounds Red A, D M. succinctly implementable strategy facilitate large acquisition of stevioside, especially low content.
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