CN109485569B - Acetoxy isopentene group substituted biphenyl compound and preparation method and application thereof - Google Patents
Acetoxy isopentene group substituted biphenyl compound and preparation method and application thereof Download PDFInfo
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- -1 biphenyl compound Chemical class 0.000 title claims abstract description 65
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 235000010290 biphenyl Nutrition 0.000 title claims abstract description 29
- 239000004305 biphenyl Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- NGZGSCYFSOQDPU-UHFFFAOYSA-N 3-methylbut-1-enyl acetate Chemical group CC(C)C=COC(C)=O NGZGSCYFSOQDPU-UHFFFAOYSA-N 0.000 title description 2
- 239000003960 organic solvent Substances 0.000 claims abstract description 45
- 150000001875 compounds Chemical class 0.000 claims abstract description 44
- 241000546193 Clusiaceae Species 0.000 claims abstract description 16
- 235000013399 edible fruits Nutrition 0.000 claims abstract description 14
- 230000002953 anti-rotaviral effect Effects 0.000 claims abstract description 13
- 238000004128 high performance liquid chromatography Methods 0.000 claims abstract description 13
- 238000010898 silica gel chromatography Methods 0.000 claims abstract description 12
- 238000000638 solvent extraction Methods 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 239000003814 drug Substances 0.000 claims abstract description 9
- 238000000605 extraction Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 93
- 238000002156 mixing Methods 0.000 claims description 26
- 239000003480 eluent Substances 0.000 claims description 22
- 239000000243 solution Substances 0.000 claims description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- 239000000741 silica gel Substances 0.000 claims description 19
- 229910002027 silica gel Inorganic materials 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000001914 filtration Methods 0.000 claims description 16
- 238000012544 monitoring process Methods 0.000 claims description 16
- 230000002829 reductive effect Effects 0.000 claims description 16
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical group CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 15
- 239000007864 aqueous solution Substances 0.000 claims description 14
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical group CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 12
- 230000002441 reversible effect Effects 0.000 claims description 12
- 239000003208 petroleum Chemical group 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000010828 elution Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000002244 precipitate Substances 0.000 claims description 8
- 230000005526 G1 to G0 transition Effects 0.000 claims description 7
- 238000001704 evaporation Methods 0.000 claims description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 6
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical group ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 6
- 238000004440 column chromatography Methods 0.000 claims description 6
- WORJEOGGNQDSOE-UHFFFAOYSA-N chloroform;methanol Chemical compound OC.ClC(Cl)Cl WORJEOGGNQDSOE-UHFFFAOYSA-N 0.000 claims description 4
- OAIVIYSBZFEOIU-UHFFFAOYSA-N chloroform;propan-2-one Chemical compound CC(C)=O.ClC(Cl)Cl OAIVIYSBZFEOIU-UHFFFAOYSA-N 0.000 claims description 4
- 229940079593 drug Drugs 0.000 claims description 4
- SRCZQMGIVIYBBJ-UHFFFAOYSA-N ethoxyethane;ethyl acetate Chemical compound CCOCC.CCOC(C)=O SRCZQMGIVIYBBJ-UHFFFAOYSA-N 0.000 claims description 4
- HWJHWSBFPPPIPD-UHFFFAOYSA-N ethoxyethane;propan-2-one Chemical compound CC(C)=O.CCOCC HWJHWSBFPPPIPD-UHFFFAOYSA-N 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 11
- 238000002474 experimental method Methods 0.000 abstract description 9
- IWUCXVSUMQZMFG-AFCXAGJDSA-N Ribavirin Chemical compound N1=C(C(=O)N)N=CN1[C@H]1[C@H](O)[C@H](O)[C@@H](CO)O1 IWUCXVSUMQZMFG-AFCXAGJDSA-N 0.000 abstract description 4
- HZCAHMRRMINHDJ-DBRKOABJSA-N ribavirin Natural products O[C@@H]1[C@H](O)[C@@H](CO)O[C@H]1N1N=CN=C1 HZCAHMRRMINHDJ-DBRKOABJSA-N 0.000 abstract description 4
- 229960000329 ribavirin Drugs 0.000 abstract description 4
- 241000702670 Rotavirus Species 0.000 abstract 1
- 210000004027 cell Anatomy 0.000 description 17
- 238000011068 loading method Methods 0.000 description 10
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 10
- OKKJLVBELUTLKV-MZCSYVLQSA-N Deuterated methanol Chemical compound [2H]OC([2H])([2H])[2H] OKKJLVBELUTLKV-MZCSYVLQSA-N 0.000 description 8
- 241000196324 Embryophyta Species 0.000 description 7
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 6
- 238000005481 NMR spectroscopy Methods 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 6
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 5
- 238000011049 filling Methods 0.000 description 5
- UZCGKGPEKUCDTF-UHFFFAOYSA-N fluazinam Chemical compound [O-][N+](=O)C1=CC(C(F)(F)F)=C(Cl)C([N+]([O-])=O)=C1NC1=NC=C(C(F)(F)F)C=C1Cl UZCGKGPEKUCDTF-UHFFFAOYSA-N 0.000 description 5
- 230000005764 inhibitory process Effects 0.000 description 5
- 238000000655 nuclear magnetic resonance spectrum Methods 0.000 description 5
- 238000010298 pulverizing process Methods 0.000 description 5
- 231100001274 therapeutic index Toxicity 0.000 description 5
- 238000012258 culturing Methods 0.000 description 4
- 238000002114 high-resolution electrospray ionisation mass spectrometry Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 4
- 238000005160 1H NMR spectroscopy Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 241000700605 Viruses Species 0.000 description 3
- 230000000259 anti-tumor effect Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000003919 heteronuclear multiple bond coherence Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000003612 virological effect Effects 0.000 description 3
- 150000007964 xanthones Chemical class 0.000 description 3
- GEZHEQNLKAOMCA-RRZNCOCZSA-N (-)-gambogic acid Chemical compound C([C@@H]1[C@]2([C@@](C3=O)(C\C=C(\C)C(O)=O)OC1(C)C)O1)[C@H]3C=C2C(=O)C2=C1C(CC=C(C)C)=C1O[C@@](CCC=C(C)C)(C)C=CC1=C2O GEZHEQNLKAOMCA-RRZNCOCZSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 208000036142 Viral infection Diseases 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 238000001460 carbon-13 nuclear magnetic resonance spectrum Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- WBKFWQBXFREOFH-UHFFFAOYSA-N dichloromethane;ethyl acetate Chemical compound ClCCl.CCOC(C)=O WBKFWQBXFREOFH-UHFFFAOYSA-N 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- GEZHEQNLKAOMCA-UHFFFAOYSA-N epiisogambogic acid Natural products O1C2(C(C3=O)(CC=C(C)C(O)=O)OC4(C)C)C4CC3C=C2C(=O)C2=C1C(CC=C(C)C)=C1OC(CCC=C(C)C)(C)C=CC1=C2O GEZHEQNLKAOMCA-UHFFFAOYSA-N 0.000 description 2
- GEZHEQNLKAOMCA-GXSDCXQCSA-N gambogic acid Natural products C([C@@H]1[C@]2([C@@](C3=O)(C\C=C(/C)C(O)=O)OC1(C)C)O1)[C@H]3C=C2C(=O)C2=C1C(CC=C(C)C)=C1O[C@@](CCC=C(C)C)(C)C=CC1=C2O GEZHEQNLKAOMCA-GXSDCXQCSA-N 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000002329 infrared spectrum Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- QALPNMQDVCOSMJ-UHFFFAOYSA-N isogambogic acid Natural products CC(=CCc1c2OC(C)(CC=C(C)C)C=Cc2c(O)c3C(=O)C4=CC5CC6C(C)(C)OC(CC=C(C)/C(=O)O)(C5=O)C46Oc13)C QALPNMQDVCOSMJ-UHFFFAOYSA-N 0.000 description 2
- GBMDVOWEEQVZKZ-UHFFFAOYSA-N methanol;hydrate Chemical compound O.OC GBMDVOWEEQVZKZ-UHFFFAOYSA-N 0.000 description 2
- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000002211 ultraviolet spectrum Methods 0.000 description 2
- 230000009385 viral infection Effects 0.000 description 2
- OAVCWZUKQIEFGG-UHFFFAOYSA-O 2-(5-methyl-2H-tetrazol-1-ium-1-yl)-1,3-thiazole Chemical compound CC1=NN=N[NH+]1C1=NC=CS1 OAVCWZUKQIEFGG-UHFFFAOYSA-O 0.000 description 1
- 241000593508 Garcinia Species 0.000 description 1
- 235000000885 Garcinia xanthochymus Nutrition 0.000 description 1
- 241000282560 Macaca mulatta Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- 150000008366 benzophenones Chemical class 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 150000004074 biphenyls Chemical class 0.000 description 1
- 238000004113 cell culture Methods 0.000 description 1
- 230000030833 cell death Effects 0.000 description 1
- 230000004663 cell proliferation Effects 0.000 description 1
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- 230000003833 cell viability Effects 0.000 description 1
- 238000003570 cell viability assay Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000120 cytopathologic effect Effects 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
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- 238000000338 in vitro Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 210000003292 kidney cell Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010413 mother solution Substances 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 230000000144 pharmacologic effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
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- 231100000331 toxic Toxicity 0.000 description 1
- 231100000816 toxic dose Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- MDBKCNBPGJPWMA-UHFFFAOYSA-N xanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3OC2=C1.C1=CC=C2C(=O)C3=CC=CC=C3OC2=C1 MDBKCNBPGJPWMA-UHFFFAOYSA-N 0.000 description 1
- JNELGWHKGNBSMD-UHFFFAOYSA-N xanthone powder Natural products C1=CC=C2C(=O)C3=CC=CC=C3OC2=C1 JNELGWHKGNBSMD-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/02—Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen
- C07C69/12—Acetic acid esters
- C07C69/21—Acetic acid esters of hydroxy compounds with more than three hydroxy groups
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/48—Separation; Purification; Stabilisation; Use of additives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/48—Separation; Purification; Stabilisation; Use of additives
- C07C67/56—Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption
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Abstract
The invention discloses an acetoxy isopentenyl substituted biphenyl compound, a preparation method and application thereof, wherein the molecular formula of the acetoxy isopentenyl substituted biphenyl compound is C20H22O6Having the following structural formula:
the preparation method takes dried branches, leaves or fruits of arbors of Guttiferae as raw materials, and comprises the steps of extract extraction, organic solvent extraction, silica gel column chromatography and high-pressure liquid chromatography separation. The application is the application of the acetoxyl isopentenyl substituted biphenyl compound in preparing the rotavirus resisting medicine. By anti-rotavirus activity experiment, ribavirin is selected as a control, and the compound is applied to CC of rotavirus50And EC50Values of 175.5 and 32 respectivelyμmol/L, it has better anti-rotavirus activity. The compound has simple structure and good activity, can be used as a leading compound of an anti-rotavirus medicament, and has good application prospect.
Description
Technical Field
The invention belongs to the technical field of extraction of effective components of plants, and particularly relates to an acetoxyl isopentenyl substituted biphenyl compound, and a preparation method and application thereof.
Background
Guttiferae (Guttiferae)Garcinia L.) About 450 plants all over the world, produced Asia, south Africa and BoriniIn western Asia, there are 21 kinds in China, which are distributed in southern provinces such as Guangdong, Guangxi, Yunnan, etc. The gambogic plant is also one of main resources of natural xanthone (xanthone) components, is rich in isopentenyl substituted xanthone (xanthones), has novel and various structures and wide pharmacological activity, particularly has the most representative gambogic acid (gambogic acid) and broad-spectrum and strong anti-tumor activity, is one of the research hotspots of anti-tumor natural products in recent years, and Chinese scholars are developing injection thereof and are novel anti-tumor medicines. In addition to xanthones, compounds such as biphenyls, benzophenones, biflavonoids and depsiphenones are characteristic components of plants in this family and have various biological activities. In order to more effectively utilize the gambogic plant resources in China and search for active ingredients with development prospects, systematic active ingredient research work is selected to be carried out on the gambogic plants.
Disclosure of Invention
The first purpose of the invention is to provide an acetoxy isopentenyl substituted biphenyl compound; the second purpose is to provide a preparation method of the acetoxyl isopentenyl substituted biphenyl compound; the third purpose is to provide the application of the acetoxy isopentenyl substituted biphenyl compound.
The first purpose of the invention is realized by that the acetoxyl isopentenyl substituted biphenyl compound is obtained by using dry branches, leaves or fruits of arbors of Guttiferae as raw materials and performing extract extraction, organic solvent extraction, silica gel column chromatography and high performance liquid chromatography separation, and the molecular formula of the compound is C20H22O6The compound has the following structural formula:
the second purpose of the invention is realized by that the preparation method of the acetoxyl isopentenyl substituted biphenyl compound is obtained by using dry branches, leaves or fruits of arbors of Guttiferae as raw materials and performing extract extraction, organic solvent extraction, silica gel column chromatography and high-pressure liquid chromatography separation, and specifically comprises the following steps:
A. extracting the extractum: coarsely crushing branches, leaves or fruits of arbors of the family Guttiferae to 20-40 meshes, ultrasonically extracting for 30-60 min each time for 2-4 times by using an organic solvent, and mixing extracting solutions; filtering the extracting solution, concentrating the extracting solution under reduced pressure to 1/4-1/2 volume, standing, filtering out precipitates, and concentrating to obtain an extract a;
B. organic solvent extraction: adding 1-2 times of water by weight into the extract a, extracting for 3-5 times by using an organic solvent with the same volume as the water, combining organic solvent extraction phases, and concentrating under reduced pressure to obtain an extract b;
C. silica gel column chromatography: dissolving the extract b by using an organic solvent with the weight ratio of 1.5-3 times, then mixing the sample by using 200-300 meshes of silica gel with the weight of 0.8-1.2 times of the extract, and then performing silica gel column chromatography, wherein the silica gel filled in the column is 200-300 meshes, and the using amount of the silica gel is 6-8 times of the weight of the extract b; gradient eluting with a mixed organic solvent with a volume ratio of 1: 0-0: 1, collecting gradient eluent, concentrating, monitoring by TLC, and combining the same parts;
D. reversed-phase column chromatography: subjecting the eluate obtained by eluting with organic solvent at ratio of 4:1 to reverse phase column chromatography, wherein the reverse phase column is filled with reverse phase material C-18, C-8 or ODS; performing gradient elution by using a methanol aqueous solution with the volume content of 70-100%, collecting eluent of each part, concentrating, monitoring by TLC, and combining the same parts;
E. high performance liquid chromatography separation: and (3) separating and purifying eluent obtained by eluting with 70-100% methanol water solution by volume by using high performance liquid chromatography to obtain the acetoxyl isopentenyl substituted biphenyl compound.
The acetoxy isopentenyl substituted biphenyl compound is separated for the first time, is determined to be the acetoxy isopentenyl substituted biphenyl compound by a nuclear magnetic resonance and other spectrum technology determination method, and is characterized in that the specific structure is as follows:
the compound was a pale orange gum; ultraviolet spectrum (the solvent is methanol),λ max(log ε): 570 (1.84), 206 (3.95) nm; infrared spectrum (Potassium bromide tablet) vmax 3428, 2935, 1713, 1614, 1492, 1455, 1434, 1371, 1314, 1267, 1228, 1070, 1024, 948, 837, 585 cm-1(ii) a HRESIMS shows the peak of the excimer of the compound of the inventionm/z358.1430 [M]+(calculated 358.1416), combined13C and1the H NMR spectrum (FIGS. 1 and 2, attribution of hydrogen spectrum data in carbon spectrum in Table 1) gave a molecular formula C20H22O6。1H NMR (CD3OD, 400 MHz) and13C NMR（CD3OD, 100 MHz) data, see table 1.
HRESIMS shows that the peak of the excimer ion is the peak of the excimer ionm/z 358.1430 [M]+(calculated 358.1416), combined13C NMR spectrum to confirm the molecular formula as C20H22O6The unsaturation degree was 10. Of the compound1H-and13C-NMR data assignment showed that it contained 20 carbons, including 1 methoxy group, 2 methyl groups, 2 methylene groups, 6 methine groups, 9 quaternary carbons. According to the nuclear magnetic resonance dataδ H 6.53 (1H, s, H-6)，7.10 (1H, d, J=8.1 Hz, H-8), 6.86 (1H, d, J=8.1 Hz, H-9, H-11), 7.10 (1H，d, J=8.1Hz, H-12), 3.31 (2H, d, J=6.6 Hz, H-1＇), 5.44(1H, t, J=6.5 Hz, H-2＇), 4.42 (2H, s, H-4＇), 1.53 (3H, s, H-5＇), 3.88 (3H,s, 3-OMe), 2.08 (3H, s, 4＇-OAc); δ C 129.8 (C-1), 124.1 (C-2), 145.1 (C-3), 138.3(C-4), 147.8 (C-5), 113.8 (C-6), 134.8 (C-7), 131.5 (C-8), 115.7 (C-9), 156.9 (C-10), 115.3 (C-11), 131.2 (C-12), 26.8 (C-1＇), 130.8 (C-2＇), 134.5 (C-3＇), 71.2 (C-4＇), 13.9 (C-5＇), 60.8 (4-OMe), 172.9, 20.8 (4＇-OAc)]. According toδ H3.88 (OMe) withδ C 138.3 HMBC correlation of (C-4), methoxy group is located at C-4. H-1' ()δ H 3.31) and C-2 (δ C 124.1），C-1（δ C 129.8) andC-3（δ C 145.1) and H-2' (δ H 5.44) with C-2 (C)δ C 124.1) indicates acetoxy isopentenyl at C-2. According to C-3 (δ C 145.1），C-5（δ C 147.8），C-10（δ C 156.9), three hydroxyl groups are located at C-3, C-5, C-10, respectively.1H and13the C NMR spectrum revealed that the 1,2,3,4, 5-pentasubstituted benzene ring [ alpha ], [ beta ]δ H6.53 (1H, s, H-6):δ C 129.8（C-1），124.1（C-2），145.1（C-3），138.3（C-4），147.8（C-5），113.6（C-6）]， [δ H 7.10（2H，d，J = 8.1 Hz，H-8，H-12），6.86（2H，d，J = 8.0Hz，H-9，H-11）。δ C134.8（C-7），131.5（C-8，C-12），115.7（C-9，C-11），156.9（C-10）]the substitution pattern of the compound was further confirmed. The structure of the compound is now determined.
The third purpose of the invention is realized by the application of the acetoxyl isopentenyl substituted biphenyl compound in preparing anti-rotavirus medicaments. By anti-rotavirus activity experiment, ribavirin is selected as a control, and the compound is applied to CC of rotavirus50And EC50Values of 175.5 and 32 respectivelyμmol/L, it has better anti-rotavirus activity. The compound has simple structure and good activity, can be used as a leading compound of an anti-rotavirus medicament, and has good application prospect.
Drawings
FIG. 1 is a nuclear magnetic resonance carbon spectrum of a compound (C13C NMR）；
FIG. 2 shows NMR spectra of compounds (A), (B), (C), (D1H NMR）；
Fig. 3 is the primary HMBC (→) correlation of the compounds.
Detailed Description
The invention is further illustrated by the following examples and figures, but is not limited in any way thereto, and any variations or modifications based on the teachings of the invention are within the scope of the invention.
The acetoxyl isopentenyl substituted biphenyl compound is obtained by taking dried branches, leaves or fruits of arbors of Guttiferae as raw materials and performing extract extraction, organic solvent extraction, silica gel column chromatography and high-pressure liquid chromatography separation, and the molecular formula of the compound is C20H22O6Having the following structural formula:
the second purpose of the invention is realized by that the preparation method of the acetoxyl isopentenyl substituted biphenyl compound is obtained by using dry branches, leaves or fruits of arbors of Guttiferae as raw materials and performing extract extraction, organic solvent extraction, silica gel column chromatography and high-pressure liquid chromatography separation, and specifically comprises the following steps:
A. extracting the extractum: coarsely crushing branches, leaves or fruits of arbors of the family Guttiferae to 20-40 meshes, ultrasonically extracting for 30-60 min each time for 2-4 times by using an organic solvent, and mixing extracting solutions; filtering the extracting solution, concentrating the extracting solution under reduced pressure to 1/4-1/2 volume, standing, filtering out precipitates, and concentrating to obtain an extract a;
B. organic solvent extraction: adding 1-2 times of water by weight into the extract a, extracting for 3-5 times by using an organic solvent with the same volume as the water, combining organic solvent extraction phases, and concentrating under reduced pressure to obtain an extract b;
C. silica gel column chromatography: dissolving the extract b by using an organic solvent with the weight ratio of 1.5-3 times, then mixing the sample by using 200-300 meshes of silica gel with the weight of 0.8-1.2 times of the extract, and then performing silica gel column chromatography, wherein the silica gel filled in the column is 200-300 meshes, and the using amount of the silica gel is 6-8 times of the weight of the extract b; gradient eluting with a mixed organic solvent with a volume ratio of 1: 0-0: 1, collecting gradient eluent, concentrating, monitoring by TLC, and combining the same parts;
D. reversed-phase column chromatography: subjecting the eluate obtained by eluting with organic solvent at ratio of 4:1 to reverse phase column chromatography, wherein the reverse phase column is filled with reverse phase material C-18, C-8 or ODS; performing gradient elution by using a methanol aqueous solution with the volume content of 70-100%, collecting eluent of each part, concentrating, monitoring by TLC, and combining the same parts;
E. high performance liquid chromatography separation: and (3) separating and purifying eluent obtained by eluting with 70-100% methanol water solution by volume by using high performance liquid chromatography to obtain the acetoxyl isopentenyl substituted biphenyl compound.
Further, the organic solvent in the step A is 70-100% of acetone, ethanol or methanol.
Further, the organic solvent in the step B is ethyl acetate, chloroform, diethyl ether, petroleum ether or benzene.
Further, the mixed organic solvent in the step C is chloroform-acetone, chloroform-methanol, petroleum ether-acetone or petroleum ether-ethyl acetate, etc.
Further, the volume ratio of the mixed organic solvent in the step C is 1:0, 4:1, 2:1, 1:1 and 0: 1.
And further, the high performance liquid chromatography separation and purification in the step E takes 80-90% methanol as a mobile phase, a reversed-phase preparation column with the flow rate of 2-5 ml/min and the thickness of 9.4 x 250mm and the thickness of 5 mu m as a stationary phase, an ultraviolet detector detects the wavelength of 254nm, the sample injection is 45-60 mu L each time, chromatographic peaks of 15-20 min are collected, and the acetoxyl isopentenyl substituted biphenyl compounds are obtained by evaporation after multiple accumulation.
The invention relates to application of acetoxyl isopentenyl substituted biphenyl compounds in preparation of anti-rotavirus medicaments.
The gambogic plant of the invention is not limited by regions and varieties, and can be realized.
Example 1
Pulverizing dried branch, leaf and/or fruit of arbor of Guttiferae 5.5kg into 20 mesh coarse powder, ultrasonic extracting with 70% acetone for 30min for 4 times, and mixing extractive solutions; filtering the extractive solution, and concentrating under reduced pressure to 1/4; standing, filtering out precipitates, and concentrating to obtain 260g of extract a; adding 260g of water into the extract a, extracting for 5 times by using ethyl acetate with the same volume as the water, combining extract phases, and concentrating under reduced pressure to obtain 154g of extract b; 1500g of 200-plus-300-mesh silica gel is used for filling a column, 200g of methanol is added into the extract b for dissolving, 160g of 100-plus-200-mesh silica gel is added for sample mixing, and the mixture is loaded on the column after the sample mixing; gradient eluting with chloroform-methanol mixed organic solvent at volume ratio of 1:0, 20:1, 9:1, 8:2, 7:3, 3:2, 1:1, 1:2, 0:1 respectively, collecting gradient eluate, concentrating, monitoring by TLC, mixing the same parts to obtain 9 parts, and eluting with chloroform-methanol mixed organic solvent at volume ratio of 7:3 to obtain eluate c 13 g; loading the eluate C on a reversed-phase column by using a reversed-phase material C-18, performing gradient elution by using a methanol aqueous solution with the volume content of 20-100%, collecting and concentrating the eluate of each part, monitoring by TLC, and combining the same parts; and (2) taking an eluent obtained by eluting with a methanol aqueous solution with the volume content of 70-100%, taking 85% methanol as a mobile phase, taking an Altima C18 reversed-phase preparation column with the flow rate of 3ml/min and the thickness of 9.4 x 250mm and the thickness of 5 mu m as a stationary phase, detecting the wavelength of 254nm by using an ultraviolet detector, feeding 50 mu L of sample each time, collecting chromatographic peaks for 12min, accumulating for multiple times, and evaporating to dryness to obtain the acetoxyl isopentenyl substituted biphenyl compound.
Example 2
Pulverizing dried branch, leaf and/or fruit of arbor of Guttiferae 3.5kg into 20 mesh powder, ultrasonic extracting with 10% water-containing ethanol for 3 times, each for 20min, and mixing extractive solutions; filtering the extractive solution, and concentrating under reduced pressure to 1/3; standing, filtering out precipitates, and concentrating to obtain 360g of extract a; adding 360g of water into the extract a, extracting for 3 times by using ethyl acetate with the same volume as the water, combining extraction phases, and concentrating under reduced pressure to obtain 120g of extract b; filling 1200g of 200-mesh silica gel into the column, adding 240g of methanol into the extract b for dissolution, then adding 120g of 100-mesh 200-mesh silica gel for sample mixing, and filling the mixture into the column after sample mixing; gradient eluting with chloroform-acetone mixed organic solvent at volume ratio of 1:0, 20:1, 9:1, 8:2, 3:2, 1:1, 1:2, and 0:1, collecting gradient eluate, concentrating, monitoring by TLC, and mixing the same fractions; the volume ratio of chloroform-acetone mixed organic solvent eluent c is 46 g; loading the eluate C on a reversed-phase column by using a reversed-phase material C-18, performing gradient elution by using a methanol aqueous solution with the volume content of 20-100%, collecting and concentrating the eluate of each part, monitoring by TLC, and combining the same parts; and (3) taking an eluent obtained by eluting with a 70-100% methanol aqueous solution, taking 80% methanol as a mobile phase, taking an Altima C18 reversed-phase preparation column with the flow rate of 3ml/min, the flow rate of 2-5 ml/min and the flow rate of 9.4 x 250mm and the size of 5 mu m as a stationary phase, detecting the wavelength of 254nm by using an ultraviolet detector, feeding 50 mu L of sample each time, collecting a chromatographic peak for 20min, accumulating for multiple times, and evaporating to dryness to obtain the acetoxyl isopentenyl substituted biphenyl compound.
Example 3
Pulverizing dried branch, leaf and/or fruit of arbor of Guttiferae 6.5kg into 30 mesh, ultrasonic extracting with 20% methanol for 20min for 3 times, and mixing extractive solutions; filtering the extractive solution, and concentrating under reduced pressure to 1/2; standing, filtering out precipitate, and concentrating to obtain 675g extract a; adding 700g of water into the extract a, extracting for 4 times by using chloroform with the same volume as the water, combining extract phases, and concentrating under reduced pressure to obtain 342g of extract b; 3400g of 200-plus-300-mesh silica gel is used for filling a column, 900g of methanol is added into the extract b for dissolving, 360g of 100-plus-200-mesh silica gel is added for sample mixing, and the mixture is loaded on the column after the sample mixing; gradient eluting with dichloromethane-ethyl acetate mixed organic solvent at volume ratio of 1:0, 20:1, 9:1, 8:2, 7:3, 3:2, 1:1, 1:2, 0:1, collecting gradient eluate, concentrating, monitoring by TLC, and mixing the same fractions; the volume ratio of dichloromethane-ethyl acetate mixed organic solvent eluent c is 9:1 is 45 g; loading a reversed-phase material ODS into a column, loading the eluent c into the reversed-phase column, performing gradient elution by using a methanol aqueous solution with the volume content of 20-100%, collecting and concentrating the eluent of each part, monitoring by TLC, and combining the same parts; and (3) taking an eluent obtained by eluting with a methanol aqueous solution with the volume content of 80-100%, taking 88% methanol as a mobile phase, taking an Altima C18 reversed-phase preparation column with the flow rate of 3ml/min and the thickness of 9.4 x 250mm and the thickness of 5 mu m as a stationary phase, detecting the wavelength of 254nm by using an ultraviolet detector, feeding 50 mu L of sample each time, collecting chromatographic peaks for 7min, accumulating for multiple times, and evaporating to dryness to obtain the acetoxyl isopentenyl substituted biphenyl compound.
Example 4
Collecting dried branch, leaf and/or fruit of arbor of Guttiferae 5.9kg, coarse pulverizing to 40 mesh, extracting with 90% ethanol for 3 times, and mixing extractive solutions; filtering the extractive solution, and concentrating under reduced pressure to 1/4; standing, filtering out precipitate, and concentrating to obtain extract a of 760 g; adding 800g of water into the extract a, extracting for 4 times by using petroleum ether with the same volume as the water, combining extract phases, and concentrating under reduced pressure to 305g of extract b; loading 3000g of 200-mesh silica gel into a column, adding 300g of methanol into the extract b for dissolution, then adding 300g of 100-mesh 200-mesh silica gel for sample mixing, and loading the sample into the column after sample mixing; gradient eluting with petroleum ether-acetone mixed organic solvent at volume ratio of 1:0, 20:1, 9:1, 8:2, 7:3, 3:2, 1:1, 1:2, and 0:1, collecting gradient eluate, concentrating, monitoring by TLC, and mixing the same fractions; the eluent c of the petroleum ether-acetone mixed organic solvent with the volume ratio of 8:2 is 43 g; loading the eluate C into a reverse phase material C-8 column, loading the eluate C into the reverse phase column, performing gradient elution by using a methanol aqueous solution with the volume content of 80-100%, collecting and concentrating the eluate of each part, monitoring by TLC, and combining the same parts; and (3) taking an eluent obtained by eluting with 70-100% methanol aqueous solution in volume content, taking 90% methanol as a mobile phase, taking an Altima C18 reversed-phase preparation column with the flow rate of 2ml/min and the size of 9.4 x 250mm and the size of 5 mu m as a stationary phase, detecting the wavelength of 254nm by using an ultraviolet detector, collecting chromatographic peaks for 8min, accumulating for multiple times, and evaporating to dryness to obtain the acetoxyl isopentenyl substituted biphenyl compound.
Example 5
Pulverizing dried branch, leaf and/or fruit of arbor of Guttiferae 5.6 kg into 20 mesh coarse powder, ultrasonic extracting with 80% methanol for 30min for 3 times, and mixing extractive solutions; filtering the extractive solution, and concentrating under reduced pressure to 1/2; standing, filtering out precipitates, and concentrating to obtain 430g of extract a; adding 800g of water into the extract a, extracting for 4 times by using acetone with the same volume as the water, combining extract phases, and concentrating under reduced pressure to obtain 260g of extract b; 2200g of 200-mesh silica gel 300 meshes is used for filling the column, 420g of ethyl acetate is added into the extract b for dissolving, 400g of 100-mesh silica gel 200 meshes is added for sample mixing, and the mixture is loaded on the column after the sample mixing; gradient eluting with petroleum ether-ethyl acetate mixed organic solvent at volume ratio of 1:0, 20:1, 9:1, 8:2, 3:2, 1:1, 1:2, and 0:1, collecting gradient eluate, concentrating, monitoring by TLC, and mixing the same fractions; 26g of eluent c of petroleum ether-ethyl acetate mixed organic solvent with the volume ratio of 9: 1; loading a reversed-phase material ODS into a column, loading the eluent c into the reversed-phase column, performing gradient elution by using a methanol aqueous solution with the volume content of 20-100%, collecting and concentrating the eluent of each part, monitoring by TLC, and combining the same parts; and (3) taking an eluent obtained by eluting with a methanol aqueous solution with the volume content of 70-100%, taking 83% methanol as a mobile phase, taking a 9.4 x 250mm 5 mu m Altima C18 reversed-phase preparation column as a stationary phase at the flow rate of 3ml/min, taking an ultraviolet detector for detecting the wavelength of 254nm, collecting a chromatographic peak for 17min, accumulating for multiple times, and evaporating to dryness to obtain the acetoxyl isopentenyl substituted biphenyl compound.
Example 6
The compound prepared in example 1 was taken as a pale orange gum; the determination method comprises the following steps: nuclear magnetic resonance, in combination with other spectroscopic techniques, was used to identify structures.
(1) Ultraviolet spectrum (the solvent is methanol),λ max（logε）：570 (1.84), 206 (3.95) nm；
(2) infrared spectrum (Potassium bromide tablet) vmax 3428, 2935, 1713, 1614, 1492, 1455, 1434, 1371, 1314, 1267, 1228, 1070, 1024, 948, 837, 585 cm-1；
(3) HRESIMS shows the peak of the excimer of the compound of the inventionm/z358.1430 [M]+(calculated 358.1416), combined13C and1the H NMR spectrum (FIGS. 1 and 2, attribution of hydrogen spectrum data in carbon spectrum in Table 1) gave a molecular formula C20H22O6。1H NMR (CD3OD, 400 MHz) and13C NMR（CD3OD, 100 MHz) data, see table 1.
Of the compounds of Table 11H and13c NMR data (400/100 MHz, CD)3OD)
HRESIMS shows that the peak of the excimer ion is the peak of the excimer ionm/z 358.1430 [M]+(calculated 358.1416), combined13C NMR spectrum to confirm the molecular formula as C20H22O6The unsaturation degree was 10. Of the compound1H-and13C-NMR data assignment showed that it contained 20 carbons, including 1 methoxy group,2 methyl groups, 2 methylene groups, 6 methine groups, 9 quaternary carbons. According to the nuclear magnetic resonance dataδ H 6.53 (1H, s, H-6)，7.10 (1H, d, J=8.1 Hz, H-8), 6.86 (1H, d, J=8.1 Hz, H-9, H-11), 7.10 (1H，d, J=8.1Hz, H-12), 3.31 (2H, d, J=6.6 Hz, H-1'), 5.44(1H, t, J=6.5 Hz, H-2'), 4.42 (2H, s, H-4'), 1.53 (3H, s, H-5'), 3.88 (3H,s, 3-OMe), 2.08 (3H, s, 4'-OAc); δ C 129.8 (C-1), 124.1 (C-2), 145.1 (C-3), 138.3(C-4), 147.8 (C-5), 113.8 (C-6), 134.8 (C-7), 131.5 (C-8), 115.7 (C-9), 156.9 (C-10), 115.3 (C-11), 131.2 (C-12), 26.8 (C-1'), 130.8 (C-2'), 134.5 (C-3'), 71.2 (C-4'), 13.9 (C-5'), 60.8 (4-OMe), 172.9, 20.8 (4'-OAc)]According toδ H3.88 (OMe) withδ C 138.3 HMBC correlation of (C-4), methoxy group is located at C-4. H-1' ()δ H 3.31) and C-2 (δ C 124.1），C-1（δ C 129.8) and C-3 (δ C 145.1) and H-2' (δ H 5.44) with C-2 (C)δ C 124.1) indicates acetoxy isopentenyl at C-2. According to C-3 (δ C 145.1），C-5（δ C 147.8），C-10（δ C 156.9), three hydroxyl groups are located at C-3, C-5, C-10, respectively.1H and13the C NMR spectrum revealed that the 1,2,3,4, 5-pentasubstituted benzene ring [ alpha ], [ beta ]δ H6.53 (1H, s, H-6):δ C 129.8（C-1），124.1（C-2），145.1（C-3），138.3（C-4），147.8（C-5），113.6（C-6）]， [δ H 7.10（2H，d，J = 8.1 Hz，H-8，H-12），6.86（2H，d，J = 8.0Hz，H-9，H-11）。δ C134.8（C-7），131.5（C-8，C-12），115.7（C-9，C-11），156.9（C-10）]the substitution pattern of the compound was further confirmed. The structure of the compound is now determined.
Example 7
The compound prepared in example 2 was taken as lightAn orange gum; the structure determination was carried out as in example 6, with the results: the structure is the same as example 6, the molecular formula is C20H22O6. It was confirmed that the compound prepared in example 2 was the acetoxyisopentenyl-substituted biphenyl compound.
Example 8
The compound prepared in example 3 was taken as a pale orange gum; the structure determination was carried out as in example 6, with the results: the structure is the same as example 6, the molecular formula is C20H22O6. It was confirmed that the compound prepared in example 3 was the acetoxyisopentenyl-substituted biphenyl compound.
Example 9
The compound prepared in example 4 was taken as a pale orange gum; the structure determination was carried out as in example 6, with the results: the structure is the same as example 6, the molecular formula is C20H22O6. It was confirmed that the compound prepared in example 4 was the acetoxyisopentenyl-substituted biphenyl compound.
Example 10
The compound prepared in example 5 was taken as a pale orange gum; the structure determination was carried out as in example 6, with the results: the structure is the same as example 6, the molecular formula is C20H22O6. It was confirmed that the compound prepared in example 5 was the acetoxyisopentenyl-substituted biphenyl compound.
Example 11
Any acetoxyl isopentenyl substituted biphenyl compound prepared in the embodiments 1-5 is used for carrying out an anti-rotavirus activity detection test, and the test conditions are as follows:
cell lines: rhesus monkey kidney cell line (MA-104).
Experiment design: incubating MA-104 cells with compounds with different concentrations for 72 hr, repeating experiment for each cell for 2 times, processing data with the results of 3 experiments, evaluating the inhibition degree of the compounds on cell proliferation by improved MTT method, calculating inhibition rate, and calculating IC by Logit method according to the inhibition rate50In vitro anti-body of comparative CompoundsAnd (4) virus activity.
EC50 That is, the half effective concentration is the concentration at which 50% of the test animals are caused to produce a certain reaction or the reaction index is half inhibited.
CC50I.e., to half the cytotoxic concentration, to the concentration required to produce a toxic effect on half the cells. In this experiment, the concentration of drug required to cause 50% cell death is referred to.
(a) Compound cytotoxicity assays
Dissolving the compound with dimethyl sulfoxide (DMSO), sterilizing in microwave for l0min, preparing into lmg/ml mother solution with MEM, and diluting with MEM solution to desired concentration. 96-well cell culture plate, add l x l05Mal04 cell suspension at a concentration of 100 mlul/well, 37 ℃ and 5% CO2 Culturing in incubator for 24h, and adding l mg/ml, 0.2 mg/ml, and 40 mg/ml onto the well-grown monolayer cells respectivelyug/ml、8 ug/ml、1.25 uCompound of g/ml 100ul/well, 3 duplicate wells per concentration, and a normal cell control. Standing at 37 deg.C for 5% CO2 After the incubator is continuously cultured for 24h, the cell survival rate is detected by the MTT method.
(b) Preventive effect of Compound on viral infection
At a cell concentration of 104L00 per well/mlul inoculating cells in 96-well plate, culturing for 24 hr, and making the cells grow into monolayer and grow well at 100 concentrationug/ml、75 ug/ml、50 ug/ml、25 ug/ml、l ug/ml of the compound was preincubated with l.5 h cells at 37 ℃ and washed with PBS and 100 wells of 100TCID50/ml rotavirusul adsorption for lh, discard, add MEM Medium 100ul/well maintenance, 37C, 5% CO2And (5) incubating, and observing the cytopathic condition every day. After 48h, the virus inhibition rate is detected by an MTT method.
(c) Therapeutic effect of compounds on viral infections
At a cell concentration of 104L00 per well/mlul inoculating the cells in a 96-well plate, culturing for 24 hours, and observing the growth of the cellsMonolayer and good growth conditions were achieved by first using 100 wells of 100TCID50/ml rotavirusul adsorbing for lh and discarding, then adding the above-mentioned compounds of different concentrations, 100ul/well, culturing and detecting as above. Each experiment was set with a virus control group (group C) and a normal cell control group (group N).
(d) Cell viability assay
Adding 5mg/ml Methyl Thiazolyl Tetrazolium (MTT) 20 into cells cultured for 48h by MTT methodul, continuing to culture for 3-4 h, discarding the supernatant, adding DMSO into each well for 100 hoursul, immediately after shaking to completely dissolve the crystals in the wells at 490luThe absorbance A value was measured at n wavelength.
Cell viability = mean a value of drug group/a value of cell control group x100%
Viral inhibition = [ mean a value of experimental group-mean a value of viral control group ]/[ mean a value of cell control group-mean a value of viral control group ] x100%
Therapeutic Index (TI) = half toxic concentration (CC)50) Half maximal Inhibitory Concentration (IC)50)
(e) Results of the experiment
The experimental results show that: by anti-rotavirus activity experiment, ribavirin is selected as a control, and the compound is applied to CC of rotavirus50And EC50Values of 175.5 and 32 respectivelyμmol/L, shown in Table 2, has better anti-rotavirus activity.
Anti-rotavirus activity of the compounds of table 2
| No. | CC50 (µM) | EC50 (µM) | TI |
| Said compounds | 175.5+1.7 | 32+1.6 | 5.48 |
| Ribavirin | 263.2+1.9 | 13.3+0.7 | 19.8 |
aAll data are expressed as mean ± SD (standard deviation); n = 3
TI: therapeutic index, CC50/EC50。
Claims (7)
1. The acetoxy isopentenyl substituted biphenyl compound is characterized by having the following structural formula:
2. the preparation method of the acetoxyl isopentenyl substituted biphenyl compound according to claim 1, wherein the compound is obtained by using dried branches, leaves or fruits of arbors of Guttiferae as raw materials and performing extract extraction, organic solvent extraction, silica gel column chromatography and high pressure liquid chromatography separation, and specifically comprises the following steps:
A. extracting the extractum: coarsely crushing branches, leaves or fruits of arbors of the family Guttiferae to 20-40 meshes, ultrasonically extracting for 30-60 min each time for 2-4 times by using an organic solvent, and mixing extracting solutions; filtering the extracting solution, concentrating the extracting solution under reduced pressure to 1/4-1/2 volume, standing, filtering out precipitates, and concentrating to obtain an extract a;
B. organic solvent extraction: adding 1-2 times of water by weight into the extract a, extracting for 3-5 times by using an organic solvent with the same volume as the water, combining organic solvent extraction phases, and concentrating under reduced pressure to obtain an extract b;
C. silica gel column chromatography: dissolving the extract b by using an organic solvent with the weight ratio of 1.5-3 times, then mixing the sample by using 200-300 meshes of silica gel with the weight of 0.8-1.2 times of the extract, and then performing silica gel column chromatography, wherein the silica gel filled in the column is 200-300 meshes, and the using amount of the silica gel is 6-8 times of the weight of the extract b; gradient eluting with a mixed organic solvent with a volume ratio of 1: 0-0: 1, collecting gradient eluent, concentrating, monitoring by TLC, and combining the same parts;
D. reversed-phase column chromatography: subjecting the eluate obtained by eluting with organic solvent at ratio of 4:1 to reverse phase column chromatography, wherein the reverse phase column is filled with reverse phase material C-18, C-8 or ODS; performing gradient elution by using a methanol aqueous solution with the volume content of 70-100%, collecting eluent of each part, concentrating, monitoring by TLC, and combining the same parts;
E. high performance liquid chromatography separation: separating and purifying an eluent eluted by 70-100% of methanol aqueous solution by high performance liquid chromatography: taking 80-90% methanol as a mobile phase, taking a reverse phase preparation column with the flow rate of 2-5 ml/min and the sample diameter of 9.4 multiplied by 250mm and the diameter of 5 mu m as a stationary phase, detecting the wavelength of 254nm by an ultraviolet detector, feeding 45-60 mu L of sample each time, collecting chromatographic peaks for 15-20 min, accumulating for multiple times, and evaporating to dryness to obtain the acetoxy isopentenyl substituted biphenyl compound.
3. The preparation method according to claim 2, wherein the organic solvent in step A is 70-100% of acetone, ethanol or methanol.
4. The method according to claim 2, wherein the organic solvent in step B is ethyl acetate, chloroform, diethyl ether, petroleum ether or benzene.
5. The method according to claim 2, wherein the mixed organic solvent in step C is chloroform-acetone, chloroform-methanol, petroleum ether-acetone or petroleum ether-ethyl acetate.
6. The preparation method according to claim 2, wherein the volume ratio of the mixed organic solvent in the step C is 1:0, 4:1, 2:1, 1:1, 0: 1.
7. An application of the acetoxy isopentenyl substituted biphenyl compound in preparing anti-rotavirus medicines according to claim 1.
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