Novel phenolic acid compounds of tanshin polyphenolic acid N and application thereof
A kind of technology of salvianolic acid and compound, which is applied to phenolic acid compound salvianolic acid N and its application field, and can solve problems such as unreported
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Embodiment 1
[0022] Example 1 .method of extraction
[0023] Take 4 kg of the root of Danshen medicinal material, cut into decoction pieces, add 8 times the amount of water to soak for 0.5 hour, decoct and extract for 1 hour, filter, and the filtrate is set aside. The dregs were decocted with 6 times the amount of water to extract twice, each time for 0.5 hours, filtered, the filtrates were combined three times, concentrated under reduced pressure, and 0.8 kg of extract was obtained.
Embodiment 2
[0024] Example 2 .Purification method
[0025] Add 5 times the amount of water to the extract extract and heat to dissolve, slowly inject into the processed HP20 type, SP825 type macroporous adsorption resin column, first elute with water, discard; then elute with 50% ethanol, collect medicinal materials 3 Double the amount of 50% ethanol eluate, concentrate, and dry to obtain 170 g of total phenolic acids.
[0026] Heat and dissolve the total phenolic acids with water, slowly add to the Sephadex LH-20 column, first elute with water, then elute with 2 times column volume of 40% ethanol, discard; then use 60% of 2 times column volume Eluted with ethanol, the eluate was collected, concentrated, and purified by repeated column chromatography on an ODS column to obtain the new compound salvianolic acid N.
Embodiment 3
[0027] Example 3 .Structure Identification:
[0028] Salvianolic acid N: yellow amorphous powder, C 26 h 20 o 10 , with 1% FeCl 3 Reagent reaction is brown, ESI-MS ( figure 1 ): 515 (M+Na) + 、493(M+H) + 、295(M-197-Na) + . 1 HNMR (CD 3 OD)δ( image 3 ): 7.88 (1H, d, J=16.0Hz, H-7) and 6.22 (1H, d, J=16.0Hz, H-8) are a group of trans double bond proton signals, the gHMBC ( Figure 6 ) spectrum hints that this group of trans double bond protons is conjugated with carbonyl, 7.27 (1H, d, J=8.5Hz, H-7″) and 6.81 (1H, d, J=8.5Hz, H-8″) are A set of cis double bond proton signals, 3.05(1H, dd, J=15.0 / 4.0Hz, H α -7'), 2.96 (1H, dd, J=15.0 / 8.0Hz, H β -7') and 5.14 (1H, dd, J=8.0 / 4.0Hz, H-8'), suggesting that there is -CH(O)-CH in the compound 2 -Structural fragments, a set of ABX coupling systems that bind aromatic regions, 6.70 (1H, d, J = 1.5Hz, H-2'), 6.66 (1H, d, J = 8.0Hz, H-5') and 6.57 ( 1H, dd, J=1.5 / 8.0Hz, H-6'), indicating that there is a β-(3,4-dihydroxypheny...
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