CN109897084A - A kind of cardiac glycoside compounds and the preparation method and application thereof - Google Patents
A kind of cardiac glycoside compounds and the preparation method and application thereof Download PDFInfo
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Abstract
A kind of cardiac glycoside compounds of the present invention and the preparation method and application thereof, -5 β of 14 beta-hydroxy of cardiac glycoside compounds, 14 β - cardenolides -8, 16, 20 (22) - triolefin -3-O- β - D- diginose glycosides is the new cardiac glycoside compounds found by the separation and Extraction from Dipladenia-Hybriden, it is extracted using cold soaking, macroporous resin column chromatography, silica gel column chromatography, ODS column chromatography, gel column chromatography, the methods of preparative efficient liquid phase is successfully separated to obtain, with antitumor action, the compound can be used as the primer of other compounds, and the raw material of new drug development and pharmacology activity research, also can be used for preparing anti-tumor drug.
Description
Technical field
The present invention relates to the compounds and its system of the separation and Extraction from Dipladenia-Hybriden (Nerium oleanderLinn.)
Preparation Method and application, especially a kind of cardiac glycoside compounds and the preparation method and application thereof.
Background technique
Cardiac glycoside refers to that one kind existing for nature has the steroidal glycoside of significant physiological activity to heart, and cardiac glycoside has wide
General pharmacological action has heart tonifying, cytotoxicity, anticancer, diuresis, the bioactivity such as effect nervous centralis, primary treatment hyperemia
The heart diseases such as heart failure and dysrhythmia.Discovered in recent years cardiac glycoside, which has, inhibits Na+/K+- ATPase inhibiting effect,
Make Apoptosis, and it is found that there is preferable anticancer activity.So that more and more researcher's cardiac glycoside compounds.By force
Heart glycosides is distributed mainly on the Digitalis of Scrophulariaceae, the Thevetia of Apocynaceae and Alstonia, Periploca, milkweed
Category, Convallaria, Rohdea, sugar are situated between category, Adonis etc., are primarily present in the fruit of plant, in leaf or root.
Dipladenia-Hybriden (Nerium oleanderLinn.) Apocynaceae Alstonia plant, in " dictionary of medicinal plant "
About the medicinal record of oleander, leaf, micromicro are used as medicine, bitter, cold in nature, toxic.Heart tonifying, analgesia, thoughts of returning home warp are heart tonifying class
Drug, there is heart tonifying, diuresis, anti-inflammatory, antibacterial, analgesia, calm and antineoplastic action.Cardiac glycoside is mainly contained in oleander
Class, triterpenes, pregnane class, alkaloids and oil compounds.In addition, there are also phenolic acid compound, flavonoid glycoside chemical combination
Object, other compounds such as phytosterin compound.In addition, oleander also has the effects that greening and environmental protection, biological control and allelopathic.Europe
One of continent oleander main component cardiac glycoside compounds have heart tonifying, antibacterial, analgesia, calm and antineoplastic action, other
Dependent interaction and mechanism of action need to be further discovered that.Cardiac glycoside compounds section specifically binds Na+/K+- ATPase is simultaneously
Inhibit its function, makes intracellular K+Reduce Na+Increase, and then cell membrane potential is made to gate Ca2+Channel activation and Na+-Ca2+Exchange
Device starting, leads to Ca intracellular2+Duration increases, and makes apoptosis.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of cardiac glycoside compounds.
Another technical problem to be solved by this invention is to provide the preparation method of above-mentioned cardiac glycoside compounds.
Another technical problem to be solved by this invention is to provide the application of above-mentioned cardiac glycoside compounds.
In order to solve the above technical problems, the technical scheme is that
A kind of cardiac glycoside compounds (cardiac glycoside compounds D), be -5 β of 14 beta-hydroxy, 14 β-cardenolides -8,16,20
(22)-triolefin -3-O- β-D- diginose glycosides (3 β-O- (β-D-diginosyl) -14 β-hydroxy-5 β, 14 β-card-8,16,
20 (22)-trienolide), there is formula (I) described structural formula,
Above-mentioned cardiac glycoside compounds: white amorphous powder (chloroform/methanol),(c0.30,
MeOH)；(-)-ESI-MS:m/z513.2847[M-H]-、(+)-ESI-MS:m/z553.3317[M+H2O+H]+；Hydrogen spectrum, carbon spectrum
Nuclear magnetic data is shown in specific embodiment part table 2.
The preparation method of above-mentioned cardiac glycoside compounds, the specific steps are as follows:
(1) oleander fresh leaf every 20kg uses 450L after drying and crushing in diacolation bucket, and 95% (v/v) ethyl alcohol soaks 14 days, will
Filtrate obtains oleander concentrate 5L by vacuum distillation；
(2) isometric petroleum ether extraction is added into resulting 5L condensed liquid, repeats extraction 4 times, combining extraction liquid subtracts
Pressure distillation obtains two fractions: water layer, petroleum ether layer；
(3) water layer position fraction is separated using 101 macroporous resin column of D, uses water, 30%, 60%, 95% respectively
Ethyl alcohol carry out gradient elution, be then evaporated under reduced pressure to obtain four parts respectively；
(4) 60% ethanolic moieties are through silica gel column chromatography, and methylene chloride: methanol=100:0-0:100 solvent system gradient is washed
It is de-, obtain 11 fraction Fr.1-11；
(5) petroleum ether: ethyl acetate=100:0-0:100 solvent elutes fraction-fraction Fr.1, gradient elution, through silica gel
Column, and detected through thin-layer chromatography, it develops the color, merges identical part, obtain 8 fraction Fr.1 (1-8)；
(6) methylene chloride: methanol=100:0-0:100 solvent elutes fraction-fraction Fr.1-6, through silica gel column chromatography, divides
From obtaining 5 α-folinerin A (5 α-oleaside A)；
(7) petroleum ether: ethyl acetate=100:0-0:100 solvent elutes fraction-fraction Fr.2, through silica gel column chromatography, and
It is detected through thin-layer chromatography, develops the color, merge identical part, obtain 5 fraction Fr.2 (1-5)；
(8) fraction Fr.2-4 is through ODS column gradient elution, and eluting solvent methanol-water, gained fraction is through preparative efficient liquid phase
Chromatography methanol: water=60:40 solvent elution, isolated -5 β of 14 beta-hydroxy of target compound, 14 β-cardenolides -8,16,20
(22)-triolefin -3-O- β-D- diginose glycosides (3 β-O- (β-D-diginosyl) -14 β-hydroxy-5 β, 14 β-card-8,16,
20(22)-trienolide)；Fraction Fr.2-5 is through ODS column gradient elution, and eluting solvent methanol-water, gained fraction is through preparative
High performance liquid chromatography methanol: water=55:45 solvent elution separates to obtain 8 beta-hydroxy oleandrigenin 3-O- β-D- diginose glycosides (8-
hydroxy-oleandrigenin-3-O-β-d-diginoside)；Or gained fraction is through preparative high performance liquid chromatography methanol:
Water=65:35 solvent elution, isolated 14- carbonyl Nelly glycosides (14-carbanyl-neriaside).
Cardiac glycoside compounds obtained by the above method belong to A type cardiac glycoside, the C of the steroid nucleus of cardiac aglycone10, C13
It is all to be connected with β CH3,C17Side chain is α, β-unsaturation-γ-lactone ring five membered, and in C3, C14There is hydroxyl substitution in position, is all β-
Configuration；The condensed mode of four rings of cardiac aglycone steroidal parent nucleus be B/C ring be all it is trans-, C/D ring be all it is cis-, two kinds of A/B are thick
Conjunction mode has.A/B ring trans-fused, D- diginose and aglycon C3- OH is combined and is formed glycosides (B)；Also there is A/B ring is cis- to condense,
D- diginose and aglycon C3- OH is combined and is formed glycosides (A, C, D), C16Replaced or C by acetoxyl group8Position hydroxylating (A), C8, C9Between
Form double bond, C16, C17Between form double bond (D), 8,14- s carbon-carbon bond fractures, formation carbonyl or hydroxyl (C).Chemical structure
Feature: A type cardiac glycoside parent nucleus C17Side chain is α, β-unsaturation-γ-lactone ring five membered；8,9- and 16,17- formation double bonds；
Or C8Position hydroxylating, C16Position is replaced by acetoxyl group；The condensed mode of A/B ring is trans- or cis-；8,14- carbon carbon
Key fracture, forms carbonyl or hydroxyl；With aglycon C3It is all β-D-diginose that-OH, which is combined and formed the monosaccharide of glycosides,.
Application of the above-mentioned cardiac glycoside compounds in terms of preparing anti-tumor activity medicine.
A kind of antineoplastic pharmaceutical compositions, above-mentioned cardiac glycoside compounds and optional pharmacy comprising therapeutically effective amount
Acceptable excipient.
The beneficial effects of the present invention are:
The cardiac glycoside compounds are the new cardiac glycosides found by the separation and Extraction from Dipladenia-Hybriden
Object is closed, using cold soaking extraction, macroporous resin column chromatography, silica gel column chromatography, ODS column chromatography, gel column chromatography, the efficient liquid of preparative
The methods of phase is successfully separated to obtain, and has antitumor action, and the compound can be used as the primer of other compounds, and
The raw material of new drug development and pharmacology activity research also can be used for preparing anti-tumor drug.
Detailed description of the invention
Fig. 1 is the chemical structural formula of known compound 1,2,3；
Fig. 2 be noval chemical compound spectrogram in cardiac glycoside compounds (1H-NMR、13C-NMR, HMBC, NOESY map), wherein
A:8-hydroxy-oleandrigenin-3-O-β-D-diginoside；
B:5α-oleaside A；
C:14-carbanyl-neriaside；
D:3β-O-(β-D-diginosyl)-14β-hydroxy-5β,14β-card-8,16,20(22)-
trienolide；
Specific embodiment
In order to make those skilled in the art better understand technical solution of the present invention, With reference to embodiment
Technical solution of the present invention is described in further detail.
Laboratory apparatus and reagent: Fourier transform nuclear magnetic resonance spectrometer (Bruker company, Switzerland, AVIII type 600Hz)；
Color developing agent: 10% sulfuric acid ethyl alcohol.
Embodiment 1
The preparation (extracting separation process) of cardiac glycoside compounds
The fresh leaf of oleander (20Kg) is collected in Hefei ,Anhui in July, 2014.The every 20kg of oleander fresh leaf, xeraphium
450L is used after broken in diacolation bucket, filtrate is obtained oleander concentrate by vacuum distillation by 95% (v/v) ethyl alcohol cold soaking 14 days
5L；Isometric petroleum ether extraction is added into resulting 5L condensed liquid, repeats extraction 4 times, combining extraction liquid is evaporated under reduced pressure to
To two fractions: water layer (600g), petroleum ether layer (300g)；Using 101 macroporous resin column of D to water layer position (600g) fraction
It is separated, carries out gradient elution with the ethyl alcohol of water, 30%, 60%, 95% respectively, be then evaporated under reduced pressure to obtain four respectively
A fraction part；60% ethanol elution fraction (85g) (mixes sample silica gel 100-200 mesh, column silica gel 200-300 through silica gel column chromatography
Mesh, methylene chloride: methanol=100:0 (referring to 100% dichloromethane eluent situation) -0:100 solvent system gradient elution), obtain 11
A fraction Fr.1-11；Petroleum ether: ethyl acetate=100:0-0:100 solvent elutes fraction-fraction Fr.1, gradient elution, through silicon
Rubber column gel column, and detected through thin-layer chromatography, it develops the color, merges identical part, obtain 8 fraction Fr.1 (1-8)；Methylene chloride: first
Alcohol=100:0-0:100 solvent elutes fraction-fraction Fr.1-6, through silica gel column chromatography, isolated 5 α-oleaside A；Stone
Oily ether: ethyl acetate=100:0-0:100 solvent elutes fraction-fraction Fr.2, carries out through silica gel column chromatography, and through thin-layer chromatography
Detection, colour developing, merges identical part, obtains 5 fraction Fr.2 (1-5)；Fraction Fr.2-4 is eluted molten through ODS column gradient elution
Agent methanol-water, gained fraction is through preparative high performance liquid chromatography methanol: water=60:40 solvent elution, isolated 3 β-O- (β-
D-diginosyl)-14β-hydroxy-5β,14β-card-8,16,20(22)-trienolide；Fraction Fr.2-5 is through ODS column
Gradient elution, eluting solvent methanol-water, gained fraction is through preparative high performance liquid chromatography methanol: water=55:45 solvent elution, point
From obtaining 8-hydroxy-oleandrigenin-3-O- β-D-diginoside；Or gained fraction is through preparative high-efficient liquid phase color
Compose methanol: water=65:35 solvent elution, isolated 14-carbanyl-neriaside.Each structural formula is as follows:
Wherein,
A:8 beta-hydroxy oleandrigenin 3-O- β-D- diginose glycosides (8-hydroxy-oleandrigenin-3-O- β-D-
diginoside)；
B:5 α-folinerin A (5 α-oleaside A):
C:14- carbonyl Nelly glycosides (14-carbanyl-neriaside)；
- 5 β of D:14- hydroxyl, 14 β-cardenolides -8,16,20 (22)-triolefin -3-O- β-D- diginose glycosides (3 β-O- (β-D-
diginosyl)-14β-hydroxy-5β,14β-card-8,16,20(22)-trienolide)
A, white crystal (chloroform/methanol),(c0.23,MeOH)；(-)-ESI-MS:m/
z591.3161[M-H]-、(+)-ESI-MS:m/z593.3326[M+H]+；Hydrogen spectrum, carbon spectrum nuclear magnetic data are shown in specific embodiment portion
Divide table 1, determines that the molecular formula of the compound is C in conjunction with H NMR spectroscopy diagram data32H48O10。
The H NMR spectroscopy data and compound Oleandrigenin-3-O- β-D-diginoside (known compound of compound A
See attached drawing 1 and table 3) compare, the main distinction is that C-8 methine carbon signals (δ 42.4) disappear, and shows one in δ 77.1
A even oxygen quaternary carbon signal, prompts aglycon 8 and hydroxylating has occurred.
The information such as HSQC, HMBC further confirm the above supposition, and the structure of compound is as follows.
In NOESY spectrum, according to the coherent signal on ROESY map: H-5/H-19, H-19/OH-8, OH-14/H-18, H-
The chemical shift of 12 α/H-15 α and 19 methyl signals is δ 24.4, it is thus determined that the parallel conjunction mode of aglycon is cis-A/B,
Trans-B/C and cis-C/D.In addition, H-3 proton is shown as width unimodal, H-3 is prompted to be in equatorial bond.Due to lactonic ring
Rotating freely can observe that the ROESY coherent signal of H-18/H-21 and H-18/H-22 also illustrate that H-17 is in α.Compound
A is accredited as 3 β-O- (β-D-diginosyl) -16 β-acetoxy-8,14-dihydroxy-5 β, 14 β-card-20 (22) -
Enolide is retrieved by SciFinder, which has no noval chemical compound reported in the literature for one, is named as 8-
hydroxy-oleandrigenin-3-O-β-D-diginoside.
B, white amorphous powder (chloroform/methanol),(c0.29, MeOH), Kedde ' s reagent are anti-
It should show red, prompt may be A type cardiac glycoside compounds；(-)-ESI-MS:m/z515.3007[M-H]-、(+)-ESI-
MS:m/z517.3162[M+H]+；Hydrogen spectrum, carbon spectrum nuclear magnetic data are shown in specific embodiment part table 1, true in conjunction with H NMR spectroscopy diagram data
The molecular formula of the fixed compound is C30H44O7。
1H-NMR(400MHz,inC5D5N) and13C-NMR(100MHz,inC5D5N) map (attached drawing 2) shows that A type is strong
The heart glycosides α, β-unsaturation-γ-lactone ring five membered characteristic absorption signal: lactone carbonyl (δC174.5), a double bond (δH5.91,
δC) and a company Oxymethylene (δ 116.8,172.4H4.86,4.75,δC, and sugared end group signal (δ 74.0)H4.84,δC98.8).Illustrate that the compound is monosaccharide A type cardiac glycoside.Judge in combination with DEPT map, which includes 2 acyl groups,
4 quaternary carbons, 10 methines, 11 methylene, 2 methyl and 1 methoxyl group carbon signal.(with compound oleasideA
Know that compound is shown in attached drawing 1 and table 3) compare, the discovery main distinction is the chemical shift (δ 26.4) of 19 methyl signals to High-Field field
Mobile (δ 14.0), prompting aglycon A/B ring is trans-fused.Therefore compound B is identified
3β-O-(β-D-diginosyl)-14-oxo-15(14→8)abeo-5α-card-20(22)-enolide.By
SciFinder retrieval, the compound have no noval chemical compound reported in the literature for one, are named as 5 α-oleasideA.
The information such as HSQC, HMBC further confirm the above supposition, and the structure of compound is as follows.
C, white amorphous powder (chloroform/methanol),(c0.70, MeOH), Kedde ' s reagent are anti-
It should show red, prompt may be A type cardiac glycoside compounds；(-)-ESI-MS:m/z577.3015[M+COOH]-、(+)-
ESI-MS:m/z551.3187[M+H2O+H]+；Hydrogen spectrum, carbon spectrum nuclear magnetic data are shown in specific embodiment part table 1, in conjunction with H NMR spectroscopy
Diagram data determines that the molecular formula of the compound is C30H44O8。1H-NMR(400MHz,inC5D5N) and13C-NMR(100MHz,in
C5D5N) map (attached drawing 2) shows A type cardiac glycoside α, β-unsaturation-γ-lactone ring five membered characteristic absorption signal: lactone carbonyl
Base (δC174.4), a double bond (δH6.34,δC) and a company Oxymethylene (δ 118.1,170.6H5.10,5.16,δC, and sugared end group signal (δ 74.3)H4.77,δC99.9), prompting the compound also is monosaccharide A type cardiac glycoside.Scheme in conjunction with DEPT
Spectrum judgement, the compound include 3 acyl groups, 3 quaternary carbons, 9 methines, 11 methylene, 3 methyl and 1 methoxyl group
Carbon signal.Compared with compound neriaside (known compound is shown in attached drawing 1 and table 3), the main distinction is C-14 company's oxygen
Methine signals (δH4.20,δC79.9) disappear, and in δCThe signal of 219.9 one carbonyl of display, prompts aglycon 14 hydroxyls
Base is oxidized to carbonyl.According to the coherent signal in NOESY map: H-5/H-19, H-19/H-11, H-11/H-18, H-12 α/
The chemical shift of H-15 α and 19 methyl signals is δ 24.4 it is thus determined that the parallel conjunction mode of aglycon is trans-A/B,
Trans-B/C and cis-C/D.Therefore compound C is accredited 3 β-O- (β-D-diginosyl) -8,14-oxo-8,14-sec-
5β-card-20(22)-enolide.It is retrieved by SciFinder, which has no noval chemical compound reported in the literature for one,
It is named as 14-carbanyl-neriaside.
The information such as HSQC, HMBC further confirm the above supposition, and the structure of compound is as follows.
D, white amorphous powder (chloroform/methanol),(c0.30,MeOH)；(-)-ESI-MS:m/
z513.2847[M-H]-、(+)-ESI-MS:m/z553.3317[M+H2O+H]+；Hydrogen spectrum, carbon spectrum nuclear magnetic data are shown in specific embodiment party
Case part table 1 determines that the molecular formula of the compound is C in conjunction with H NMR spectroscopy diagram data30H42O7。
1H-NMR(600MHz,C5D5N) and13C-NMR(150MHz,C5D5N) map shows A type cardiac glycoside α, β-insatiable hunger
With the characteristic absorption signal of-γ-lactone ring five membered: lactone carbonyl (δC175.2), a double bond (δH6.41,δC112.2,
And a company Oxymethylene (δ 160.2)H5.06,δC, and sugared end group signal (δ 72.4)H4.80,δC99.6) change, is prompted
Closing object is also monosaccharide A type cardiac glycoside.13C-NMR(150MHz,C5D5N) map shows 30 carbon signals, wherein δC132.3(C-
8), 137.7 (C-9) and 135.3 (C-16), 142.6 (C-17) are two groups of olefinic carbon signals.
Proton signal δ 2.28 (H-7) in HMBC map, δ 1.78 (H-12) and δ 1.05 (H-19) respectively with δ 137.1
(C-9) related, proton signal δ 2.92/2.81 (H-15), δ 2.28 (H-7) and δ 1.49 (H-18) respectively with δ 132.3 (C-8) phase
It closes, has prompted between 8 and 9 that there is also a double bond, proton signal δ 6.41 (H-22), δ 2.92/2.81 (H-15) and δ 1.49
(H-18) related to δ 142.6 (C-17) respectively, proton signal δ 6.17 (H-16), δ 2.92/2.81 (H-15) respectively with δ 135.3
(C-16) related, there is also a double bonds between prompt 16 and 17.According to the coherent signal on NOESY map: H-5/H-19,
The chemical shift of H-19/H-11, H-11/H-18, H-18/H-15, H-7/H-12, H-12 α/H-15 α and 19 methyl signals
For δ 26.7.It is thus determined that the parallel conjunction mode of aglycon is cis-A/B, trans-B/C and cis-C/D.In addition, H-3 proton is shown
For width unimodal, H-3 is prompted to be in equatorial bond.In conjunction with proton on sugar1H-1H-COSY coherent signal and ortho position coupling constant and
The chemical displacement value of carbon determines that monosaccharide moieties are β-D-diginose.According to HMBC map, coherent signal H-3/C-1 ' and H-
1 '/C-3 determines that sugar is connected to aglycon 3.In summary information obtains the structure of compound.
Therefore, compound D is accredited 3 β-O- (β-D-diginosyl) -14 β-hydroxy-5 β, 14 β-card-8, and 16,
20(22)-trienolide.It is retrieved by SciFinder, which has no noval chemical compound reported in the literature for one.
The hydrogen spectrum and carbon modal data of table 1.A and B
The hydrogen spectrum and carbon modal data of table 2.C and D
The hydrogen of 3. known compound 1,2 and 3 of table is composed and carbon modal data
1. oleandrigenin -3-O- β-D- diginose glycosides (Oleandrigenin-3-O- β-D-diginoside)
2. Nelly's glycosides (neriaside)
3. oleandrin A (oleasideA)
Embodiment 2
The cellular cytoxicity activity of compound on tumor cell of the present invention.
Material and reagent
Human colon carcinoma HCT116 cell line, Human colorectal carcinoma HT29 cells system, human colon carcinoma SW620 cell line, human colon carcinoma
RKO cell line and HeLa Cells system (ATCC, Rockville, MD, the U.S.) and human gastric cancer GT cell line are (big from Sichuan
West China Hospital patients with gastric cancer is learned to obtain), RPMI-1640 is purchased from U.S. Hyclone company；DMEM/HighGlucose is purchased from
Hyclone company, the U.S.；Foetal BovineSerum (FBS) is purchased from U.S. Gibco company；Dual anti-(mycillin) is purchased from
In HyClone company, the U.S.；MTT is purchased from Beijing Solarbio company；DMSO is purchased from Beijing Solarbio company.
Specific step is as follows:
(1) each monomeric compound is dissolved with DMSO, is configured to the mother liquor that concentration is 20mM, with basis culture when experiment
Base (DMEM/HighGlucose or RPMI-1640) is diluted use.
(2) 1% dual anti-and 10% tire the preparation of RPMI1640: is added in minimal medium RPMI1640 (Hyclone)
Cow's serum mixes to obtain the final product.
(3) preparation of DMEM: be added in the minimal medium DMEM/HighGlucose (Hyclone) 1% it is dual anti-and
10% fetal calf serum, mixes to obtain the final product.
(4) it is dual anti-and 10% fetal calf serum with containing 1% after HCT116, HT29, SW620, RKO, HeLa cell line are bought
RPMI1640 (Hyclone) culture medium is at 37 DEG C, 5%CO2Under the conditions of cultivate, after passing for 3 generations, logarithmic growth phase cell is for real
It tests.
(5) GT cell line is used containing 1% dual anti-and 10% fetal calf serum DMEM/High Glucose (Hyclone) culture
Base is at 37 DEG C, 5%CO2Under the conditions of cultivate, after passing for 3 generations, logarithmic growth phase cell is for testing.
(6) the well-grown cell of logarithmic phase is taken, single cell suspension is made after 0.25% trypsin digestion, is adjusted dense
Degree is 1 × 105Cells/mL, with every hole 100 μ L cell suspension inoculation to 96 orifice plates.Cell controls group, sky is all arranged in every block of plate
White group and experimental group, every group sets 3 multiple holes；It moves it into incubator and cultivates；
(7) after being inoculated with about 12 hours, 96 orifice plates is taken out, old culture medium in hole is discarded.Into experimental group, 100 μ L are added in every hole
Culture solution (DMEM/High Glucose or RPMI-1640) containing various concentration drug, the concentration of compound is respectively 100 μ
G/mL, 10 μ g/mL, 1 μ g/mL, 0.1 μ g/mL, 0.01 μ g/mL, 0.001 μ g/mL, every hole is added 100 in control group and blank group
The corresponding culture solution of μ L (DMEM/HighGlucose or RPMI-1640), is placed on and continues to cultivate in incubator；
(8) after cultivating 48 hours, the MTT solution (every 50 μ L of hole) of 1mg/L is added, 37 DEG C are incubated for 4 hours；
(9) it is to be crystallized be completely dissolved in the DMSO of 100 μ L after, in microplate reader at wavelength 570nm measure absorbance
OD value；
(10) each drug is calculated to the IC of different cells using GraphPad Prism5 software50。
Experimental result
Compound ira vitro cytotoxic activity IC50Data are as shown in table 4 below.
Table 4
Show that compound A, D have significant cell toxicant to tumour cell by the experiment of tumour cell in vitro cytotoxic effect
Property effect have to confirm there is certain anticancer effect and be further developed as the potentiality of antineoplastic.
To sum up, of the present invention from Apocynaceae Alstonia plant Dipladenia-Hybriden (Nerium oleander
Linn. the new cardiac glycoside compounds of four kinds isolated and purified in fresh leaf) using cold soaking extraction, macroporous resin column chromatography,
The methods of silica gel column chromatography, ODS column chromatography, gel column chromatography, preparative efficient liquid phase are successfully separated to obtain, the method separation
Obtained compound purity is higher, has the feature that A type cardiac glycoside parent nucleus C17Side chain is α, in β-- five yuan of unsaturation-γ
Ester ring；8,9- and 16,17- formation double bonds；Or C8Position hydroxylating, C16Position is replaced by acetoxyl group；A/B ring it is condensed
Mode is trans- or cis-；8,14- carbon-carbon bond fractures, form carbonyl or hydroxyl；With aglycon C3- OH combines the list for forming glycosides
Sugar is all β-D-diginose；Described cardiac glycoside compounds A, D have significant cytotoxic activity and antitumor action, make cell
Apoptosis can be used as antitumor therapeutic agent, be worth with important drug development.
Embodiment 3
Preparation method: the cardiac glycoside compounds of aforementioned proportion, newborn sugar and starch are uniformly mixed, 200 meshes is crossed, uses water
The dry re-sieving of mixture after uniform wet, is added magnesium stearate, then by mixture tabletting, 250mg in every, activity at
Dividing content is 10mg.
Embodiment 4
Capsule: cardiac glycoside compounds 20mg
Galactolipin 188mg
Magnesium stearate 2mg
Preparation method: according to the above ratio uniformly mixing cardiac glycoside compounds with galactolipin, 200 meshes is crossed, obtaining
Mixture, be added magnesium stearate, be packed into No. 2 capsules, i.e.,.
It is above-mentioned a kind of cardiac glycoside compounds and the preparation method and application thereof are carried out referring to specific embodiment it is detailed
Thin description, is illustrative without being restrictive, several embodiments can be enumerated according to limited range, therefore do not taking off
From the change and modification under present general inventive concept, should belong within protection scope of the present invention.
Claims (4)
1. a kind of cardiac glycoside compounds, it is characterised in that: be -5 β of 14 beta-hydroxy, 14 β-cardenolides -8,16,20 (22)-three
Alkene -3-O- β-D- diginose glycosides has formula (I) described structural formula,
2. the preparation method of cardiac glycoside compounds described in claim 1, it is characterised in that: specific step is as follows:
(1) oleander fresh leaf every 20kg uses 450L after drying and crushing in diacolation bucket, and 95% (v/v) ethyl alcohol soaks 14 days, by filtrate
Oleander concentrate 5L is obtained by vacuum distillation；
(2) isometric petroleum ether extraction is added into resulting 5L condensed liquid, repeats extraction 4 times, combining extraction liquid decompression is steamed
It evaporates to obtain two fractions: water layer, petroleum ether layer；
(3) water layer position fraction is separated using 101 macroporous resin column of D, respectively with water, 30%, 60%, 95% second
Alcohol carries out gradient elution, is then evaporated under reduced pressure to obtain four parts respectively；
(4) 60% ethanolic moieties are through silica gel column chromatography, and methylene chloride: methanol=100:0-0:100 solvent system gradient elution obtains
11 fraction Fr.1-11；
(5) petroleum ether: ethyl acetate=100:0-0:100 solvent elution fraction-fraction Fr.1, gradient elution, through silicagel column, and
It is detected through thin-layer chromatography, develops the color, merge identical part, obtain 8 fraction Fr.1 (1-8)；
(6) methylene chloride: methanol=100:0-0:100 solvent elution fraction-fraction Fr.1-6 is separated through silica gel column chromatography
To 5 α-folinerin A (5 α-oleaside A)；
(7) petroleum ether: ethyl acetate=100:0-0:100 solvent elutes fraction-fraction Fr.2, through silica gel column chromatography, and through thin
Layer chromatography is detected, and colour developing merges identical part, obtains 5 fraction Fr.2 (1-5)；
(8) fraction Fr.2-4 is through ODS column gradient elution, and eluting solvent methanol-water, gained fraction is through preparative high performance liquid chromatography
Methanol: water=60:40 solvent elution, isolated -5 β of target compound 14- hydroxyl, 14 β-cardenolides -8,16,20 (22)-three
Alkene -3-O- β-D- diginose glycosides.
3. application of the cardiac glycoside compounds described in claim 1 in terms of preparing anti-tumor activity medicine.
4. a kind of antineoplastic pharmaceutical compositions, it is characterised in that: cardiac glycosides described in the claim 1 comprising therapeutically effective amount
Close object and optional pharmaceutically acceptable excipient.
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| CN113321696A (en) * | 2021-06-30 | 2021-08-31 | 广西师范大学 | Preparation method of cardiac glycoside and application of cardiac glycoside in preparation of antitumor drugs |
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| CN113321696A (en) * | 2021-06-30 | 2021-08-31 | 广西师范大学 | Preparation method of cardiac glycoside and application of cardiac glycoside in preparation of antitumor drugs |
| CN113321696B (en) * | 2021-06-30 | 2022-05-31 | 广西师范大学 | Preparation method of cardiac glycoside and application of cardiac glycoside in preparation of antitumor drugs |
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