CN107056800B - Dimer flavone constituents and its separation method and application in a kind of Tsuga longibracteata - Google Patents

Dimer flavone constituents and its separation method and application in a kind of Tsuga longibracteata Download PDF

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Publication number
CN107056800B
CN107056800B CN201710396384.7A CN201710396384A CN107056800B CN 107056800 B CN107056800 B CN 107056800B CN 201710396384 A CN201710396384 A CN 201710396384A CN 107056800 B CN107056800 B CN 107056800B
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longibracteata
tsuga
separation method
tsuga longibracteata
extraction
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CN201710396384.7A
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CN107056800A (en
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肖世基
刘贵园
张茂生
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Zunyi Medical University
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Zunyi Medical University
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D493/00Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system
    • C07D493/22Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system in which the condensed system contains four or more hetero rings

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines Containing Plant Substances (AREA)

Abstract

The invention discloses a kind of to isolate and purify the method for noval chemical compound and the application of the noval chemical compound from Tsuga longibracteata.It is characteristic of the invention that isolating and purifying noval chemical compound from Tsuga longibracteata using traditional extraction separation method combination modern separation technology: being extracted including solvent soaking, extraction and separation, positive pillar layer separation, the methods of half preparative high-performance liquid chromatographic separation.The noval chemical compound isolated and purified is named as tsugadiflavonol A.Isolated one new dimer flavone constituents are extracted in the extraction separation method success of new component provided by the invention from Tsuga longibracteata, provide material base for the further pharmacological effect research of Tsuga longibracteata.Through Preliminary activation studies have shown that tsugadiflavonol A has preferable antioxidation, there is good development and application prospect.

Description

Dimer flavone constituents and its separation method and application in a kind of Tsuga longibracteata
Technical field
The present invention relates to chemical field separation and extraction technologies, and in particular, to a dimer flavanols in Tsuga longibracteata Compound and its method for separating and preparing and application.
Background technique
Tsuga longibracteata (Tsuga longibracteata) belongs to a relict type under gymnosperm Pinaceae Hemlock, It is distributed in Guangdong, Jiangxi, Guangxi, Fujian, Hunan, the ground such as Guizhou are the distinctive plant in China.The trunk of this tree is tall and straight, firmly Spend larger, material is excellent, and widely used, economic value is high, and bark can extract mimosa extract, can synthetism.
Main component has lignanoids, triterpenes and flavone compound in hemlock.Flavone compound is one Class is present in the polyphenol compound in various plants, has different bioactivity and pharmacological action.So far not yet The report of chemical component extraction and separation technology in related Tsuga longibracteata bark.This patent discloses one kind from Tsuga longibracteata bark The method of one dimer flavane alcoholic compound of separation and Extraction, provides substance base for Tsuga longibracteata quality evaluation and drug efficacy study Plinth.
Summary of the invention
The present invention provides one kind from Tsuga longibracteata isolated dimer flavanols compounds simultaneously provide preparation The method of such compound, the extracting method controllability and favorable reproducibility, it is easy to operate, it is suitble to the extraction separation of micro substance.
Wherein, the present invention provides dimer flavone constituents in a kind of Tsuga longibracteata, titles are as follows: Tsugadiflavonol A, chemical structural formula are as follows:
The present invention also provides dimer flavone constituents extraction separation methods in this Tsuga longibracteata, including following step Suddenly.
1) Tsuga longibracteata bark part is taken, after drying, crushing, extracts 1~4 with 70~95% alcohol reflux of volume fraction It is secondary, it is concentrated under reduced pressure to give ethanol extract;
2) after dispersing hot water for the middle gained ethanol extract of step 1), successively with petroleum ether, ethyl acetate and n-butanol extraction It takes 1~4 time, is concentrated under reduced pressure to give each position medicinal extract;
3) ethyl acetate extract medicinal extract in step 2) is separated by silica gel column chromatography, with petroleum ether-ethyl acetate with not Same volume is than gradient elution, in conjunction with TLC detection method, is divided into several components according to polarity difference;
4) some component in step 3) is crossed into preparation HPLC, with methanol-water isocratic elution, is divided into several subfractions;
5) some subfraction obtained in step 4) is crossed into preparation HPLC, with methanol-water isocratic elution, obtains this chemical combination Object.
Above-mentioned steps 4) and step 5) with acetonitrile-water replace methanol-water isocratic elution, also available substantially similar knot Fruit.
The present invention extracts the advantages of flavanols compounds from Tsuga longibracteata and is, first by silica gel column chromatography, uses TLC method combines ultraviolet tracking to carry out rough segmentation, and recycling prepares the isolated monomer of HPLC chromatogram, and whole process only uses once Silica gel column chromatography, reduces sample loss, and separation method is not easy to flow using preparation HPLC controllability and favorable reproducibility, micro constitutent It loses, operation is also relatively simple.
Detailed description of the invention
Fig. 1 is the HR-ESI-MS of dimer flavone class compound of the present invention;
Fig. 2 is dimer flavone class compound of the present invention1H-NMR spectrogram;
Fig. 3 is dimer flavone class compound of the present invention13C-NMR spectrogram;
Fig. 4 is the nuclear magnetic resonance HSQC spectrogram of dimer flavone class compound of the present invention;
Fig. 5 is the nuclear magnetic resonance HMBC spectrogram of dimer flavone class compound of the present invention.
Specific embodiment
Now in conjunction with embodiment, the invention will be further described.
Embodiment 1
The preparation method of dimer flavone class compound of the present invention the following steps are included:
1) take Tsuga longibracteata dry bark 3.7kg, after crushed, with 95% alcohol at normal temperature of volume fraction extract 3 times, every time 7 days, it is concentrated under reduced pressure to give ethanol extract 610g;
2) by after ethanol extract is scattered in water in step 1), successively with petroleum ether, ethyl acetate and extracting n-butyl alcohol 3 times, It is concentrated under reduced pressure to give each position medicinal extract;
3) by ethyl acetate extract medicinal extract point 388g in step 2), upper silica gel column chromatography, with petroleum ether-ethyl acetate with body Product is than 3:1,1:1,1:2,10:1 gradient elution, in conjunction with TLC detection method, is divided into 5 components according to polarity difference, and Fr.1~ Fr.5, each component combination TLC is analyzed below;
4) the 4th component Fr.4 in step 3) is crossed into preparation HPLC, with the methanol-water of volume fraction 55%, chromatographic column is used C18, 20 × 250mm, flow velocity 20mL/min elution, fraction is divided into 5 parts between Detection wavelength 230nm, 5~15min of collection Fr.4.1~Fr.4.5;
5) Fr.4.3 crosses preparation HPLC in step 4), with 45% methanol-water of volume fraction, chromatographic column C18, 10 × 250mm, flow velocity 4mL/min elution, collect chromatographic peak between 8~12min, and Detection wavelength 254nm obtains the compound.
Above-mentioned steps 1) in refluxing extraction hydrous ethanol volume fraction 85%, 90%, 100%, refluxing extraction 1 time, 2 It is secondary, 4 times;Extraction 1 time, 2 times, 4 times in step 2);Volume fraction 45%, 50%, 55% acetonitrile-water are used in step 4);Step 5) volume fraction 40%, 45%, 50% acetonitrile-water are used in.With embodiment 1, can also obtain of the present invention has step Beneficial effect.
The present invention carries out the condition that TLC inspection is known: solvent is petroleum ether-ethyl acetate system and chloroform-methanol system, is shown Toner a: fluorescence is observed under ultraviolet lamp (254nm);The sprinkling of color developing agent b:10% sulfuric acid ethyl alcohol, 105 DEG C are baked to colour developing.
Structural Identification: the spectral technique utilized, mainly include nuclear magnetic resoance spectrum (1H-NMR、13C-NMR、DEPT、HSQC、 ) and the structure of mass spectral analysis (HR-ESI-MS) authenticating compound HMBC.
The compound is yellow jelly, meets the aobvious blue of ferric trichloride reagent.HR-ESI-MS[M+H]+:559.12244 (calculated value 559.12349) determines that the molecular formula of compound is C in conjunction with H NMR spectroscopy30H22O11, by spectral technique, determine the change Conjunction object is tsugadiflavonol A.Its nuclear magnetic data is shown in Table 1.
Nuclear magnetic data (400/100MHz, the CD of 1 framework compound of table3OD):
To further illustrate effect of the present invention in field of medicaments, test to come below by part antioxidation activity in vitro Explanation.
This test uses oxidation resistance of the DPPH spectrophotometry to evaluate monomeric compound prepared by the present invention.
4 test tubes are taken, wherein 1 pipe is blank group, take 2ml various concentration sample liquid to be tested that 2ml 0.16mmol/L is added DPPH ethanol solution, adds 2ml 0.05mol/L Tris-HC1 (pH=7.4) buffer, 25 DEG C of reaction 20min, It is Ai that absorbance value is measured at 517nm, and blank control group replaces test liquid with the distilled water of same volume.Each sample group does 6 A repetition calculates its average value.The clearance rate calculation formula of DPPH free radical:
Ai is the mean light absorbency of sample;Ao is the mean light absorbency of blank.
IC of the calculated result test sample to DPPH clearance rate50Value is 21-68 μ g/mg.The experimental results showed that test sample There is certain clearance rate to DPPH free radical, and clearance rate is improved with the increase of test sample solution concentration.Show Tsugadiflavonol A has certain antioxidant activity.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (7)

1. the dimer flavone constituents in a kind of Tsuga longibracteata, it is characterised in that: its chemical name is tsugadiflavonol A, chemical structural formula are as follows:
2. the extraction separation method of dimer flavone constituents in Tsuga longibracteata as described in claim 1, it is characterised in that including Following steps:
1) Tsuga longibracteata bark is taken, after drying, crushing, with 70~95% alcohol at normal temperature soak extraction of volume fraction 1~4 time, It extracts 1~10 day every time, combined extract is concentrated under reduced pressure to give ethanol extract;
2) after dispersing water for the middle gained ethanol extract of step 1), petroleum ether, ethyl acetate and extracting n-butyl alcohol 1~4 are successively used It is secondary, it is concentrated under reduced pressure to give each position medicinal extract;
3) upper silica gel column chromatography, carries out gradient with petroleum ether-ethyl acetate after merging ethyl acetate extract medicinal extract in step 2) Elution divides component according to polarity in conjunction with TLC detection method;
4) step 3) obtained component is crossed into preparation HPLC, with 40%~100% isocratic elution of methanol-water, is further divided into subfraction;
5) subfraction obtained in step 4) is crossed into preparation HPLC, with 40%~100% isocratic elution of methanol-water, obtains chemical combination Object tsugadiflavonol A.
3. the extraction separation method of dimer flavone constituents in Tsuga longibracteata as claimed in claim 2, it is characterised in that step 1) it the extraction of 85~95% alcohol reflux of volume fraction 2~4 times used in, extracts 6~9 days every time.
4. the extraction separation method of dimer flavone constituents in Tsuga longibracteata as claimed in claim 2, it is characterised in that step 3) gradient elution is carried out with volume ratio 3:1,1:1,1:2,10:1 with petroleum ether-ethyl acetate in, it is different according to flavanols polarity It is divided into 5~10 components.
5. the extraction separation method of dimer flavone constituents in Tsuga longibracteata as claimed in claim 2, it is characterised in that step 4) 45%~95% isocratic elution of methanol-water is used, 2~6 subfractions are divided into.
6. the extraction separation method of dimer flavone constituents in Tsuga longibracteata as claimed in claim 2, it is characterised in that step 5) 45%~85% isocratic elution of methanol-water used in.
7. dimer flavone constituents as described in claim 1 are in the application of anti-oxidation aspect.
CN201710396384.7A 2017-05-31 2017-05-31 Dimer flavone constituents and its separation method and application in a kind of Tsuga longibracteata Expired - Fee Related CN107056800B (en)

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CN108586396A (en) * 2018-01-22 2018-09-28 遵义医学院 - 2 (5H)-furanones of 3- (4 '-hydroxyls -3 '-methoxy-benzyl) and its extracting method
CN109053641B (en) * 2018-08-22 2022-06-24 遵义医科大学 Dineolignan compound, and separation preparation method and application thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1594247A (en) * 2004-06-23 2005-03-16 黑龙江省紫杉科技股份有限公司 Yew genus plant extract and its extraction method and application

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1594247A (en) * 2004-06-23 2005-03-16 黑龙江省紫杉科技股份有限公司 Yew genus plant extract and its extraction method and application

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
Xian-Wen Yang,等.Abiesanol A, a novel biflavanol with unique six connective hexacyclic rings isolated from Abies georgei.《Tetrahedron Letters》.2008,第49卷(第19期),第3042-3044页.
Xian-Wen Yang,等.Mono- and Sesquiterpenoids, Flavonoids,Lignans, and Other Miscellaneous Compounds of Abies georgei.《Planta Medica》.2010,第77卷(第7期),第742-748页.
常博,等.云南黄果冷杉的化学成分.《中国药科大学学报》.2014,第45卷(第1期),43-47页.
肖世基,等.长苞铁杉中两个新的重排羊毛甾烷型三萜.《有机化学》.2016,第36卷1686-1689页.

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