- PREPARATION METHOD OF TRIHYDROXYETHYL RUTOSIDE
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The present invention refers to tree hydrocyethylmetacrylate base toe side relates to manufacturing method of (trihydroxyethyl rutoside), said method (rutin) routine first content is detected to be compared with a 98% or more 7- base toe side hydrocyethylmetacrylate mono (7-monohydroxyethyl rutoside) after prepared with, continues to 7-mono hydrocyethylmetacrylate of hydrocyethylmetacrylate for on base toe side non by performing a photo lithography process (hydroxyethylated) (-glycidyl) 2% impurities derivatives base toe side of hydrocyethylmetacrylate [...] be smaller than present, obtains and makes (troxerutin), during said [...] 7,3 ', 4' -80% hydroxyethyl base toe side weight content and present, said continues product 98% or more weight content which comprises purifying an 7,3 ', 4' -may yield an hydroxyethyl base toe side.
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Paragraph 0073; 0074; 0075
(2017/01/05)
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- PREPARATION METHOD OF TRIHYDROXYETHYL RUTOSIDE
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The present invention relates to a preparation method of trihydroxyethyl rutoside. In the method, rutin is firstly prepared into 7-monohydroxyethyl rutoside with a purity of greater than or equal to 98% by weight, and then 7-monohydroxyethyl rutoside is hydroxyethylated to give troxerutin having less than 2% of non-hydroxyethylated rutoside derivatives. The amount of 7,3′,4′-trihydroxyethyl rutoside in troxerutin is more than 80% by weight. The product is further purified so that 7,3′,4′-trihydroxyethyl rutoside with a purity of greater than or equal to 98% by weight could be obtained.
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Paragraph 0059; 0060; 0061
(2016/05/02)
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