Hypoglycemics and preparation method thereof, purposes
Technical field
The present invention relates to pharmaceutical technology field, relate in particular to a kind of isolated from Chinese dark green Aglaia odorata blade
, new Bibenzyl compound bibenzyl Aglaia odorata element B (aglaiabbrevin A) with hypoglycemic effect.The invention further relates to
The compound can be used to prepare PTP1B inhibitor, it can also be used to prepare treatment diabetes, the medicine of obesity and its complication or
Health food.
Background technology
Diabetes (diabetes mellitus) be one group caused by h and E factor interaction it is clinical comprehensive
Close disease.At present, diabetes are typically divided into two classes, I- patients with type Ⅰ DM (insulin-dependent diabetes mellitus, insulin-
Dependent diabetes mellitus, IDDM) and II- patients with type Ⅰ DM (Non-Insulin Dependent Diabetes Mellitus, non-
Insulin-dependent diabetes mellitus, NIDDM).90% above is II- patients with type Ⅰ DM in diabetes.
The characteristics of II- patients with type Ⅰ DM is that insulin sensitive tissues such as skeletal muscle, liver, adipose tissue are supported to insulin action
It is anti-.Protein-tyrosine-phosphatase (PTPases) GAP-associated protein GAP tyrosine phosphatase in insulin action path in statocyte
Effect in change level is increasingly taken seriously, the new way as treatment II- patients with type Ⅰ DM.PTPase includes big nation's cross-film
(receptor type) and intracellular (non-receptor type) enzyme, participates in a series of important life processes of regulation and control.At present, it is logical in insulin to PTPase
In road acceptor or acceptor metasomite influence Normal insulin effect research, be concentrated mainly on LAR-PTPase, SHPTP-2,
PTP1B。
PTP1B is first certified protein-tyrosine-phosphatase (protein tyrosine
Phosphatase), the experiment on mice rejected by PTP1B shows that PTP1B is acylated by the dephosphorization to insulin receptor, and then
Very important effect is played in regulation insulin sensitivity and fat metabolic process.Thus, it is selective, high activity
PTP1B inhibitor has important value in the treatment of II- patients with type Ⅰ DM, obesity and its complication.
The content of the invention
The present invention be extracted from Chinese dark green Aglaia odorata (A.abbreviata) blade it is isolated, with hypoglycemic
New Bibenzyl compound bibenzyl Aglaia odorata element B (aglaiabbrevin A) of effect.Show through pharmacological testing research, the chemical combination
Thing has certain inhibitory activity to protein tyrosine phosphate 1B (PTP1B).
Therefore, it is an object of the present invention to provide new Bibenzyl compound bibenzyl Aglaia odorata element B.
It is a further object to provide the preparation method of the bibenzyl Aglaia odorata element B.
The further object of the present invention is to provide the purposes of the bibenzyl Aglaia odorata element B.Specifically, the bibenzyl rice is young
Applications of the orchid element B in the medicine for preparing protein-tyrosine-phosphatase 1B (PTP1B) inhibitor, is further preparing treatment sugar
Application in the medicine or health food of urine disease, obesity and its complication.
First purpose of the invention, the present invention is found that a new bibenzyl from dark green Aglaia odorata blade first
Class compound bibenzyl Aglaia odorata element B, its chemical constitution is as follows:
Second purpose of the invention, the present invention provides the preparation method of the bibenzyl Aglaia odorata element B, and it is from green
It is isolated in green Aglaia odorata blade, comprise the following steps that:
1) extract medicinal extract is prepared
Dark green Aglaia odorata (A.abbreviata) the blade ethanol routinely seepage pressure effects that will be crushed, obtain extract solution, will
Extract solution is concentrated under reduced pressure to reclaim ethanol, obtains CE;
2) isolate and purify
(1) above-mentioned CE is dispersed in water into suspension, suspension is used into petroleum ether, ethyl acetate and positive fourth successively
Alcohol is extracted, and the concentration of gained extract respectively obtains petroleum ether and extracts medicinal extract, ethyl acetate extraction medicinal extract and n-butanol extraction medicinal extract;
(2) ethyl acetate extraction medicinal extract is carried out into silica gel column chromatography, with petroleum ether/acetone gradient elution, is developed the color according to TLC
Merge similar stream part and obtain 4 components A, B, C, D;Wherein component B is petroleum ether/acetone volume ratio 8:2 and 7:3 elution fractions are passed through
Sephadex LH-20 gel filtration chromatographies, chromatographic column specification:4.0 (diameter) cm × 120 (length) cm;Sephadex LH-20 coagulate
Glue dry weight:150g, with methylene chloride/methanol volume ratio 1:1 wash-out, merges similar stream part and obtains 6 components according to TLC colour developings
(B1-B6);Component B5, i.e. methylene chloride/methanol volume ratio 1:1 elution volume is 170~210mL elution fractions, then through preparing
Type HPLC, with acetonitrile/water 75:25 volume ratios are eluted, and obtain the compounds of this invention bibenzyl Aglaia odorata element B;
Step (1) is prepared in extract medicinal extract step, and the ethanol for using that extracts is 95% ethanol;
In (2) step is isolated and purified, the concentration of petroleum ether/acetone gradient elution is followed successively by volume ratio 100:0、90:10、
80:20、70:30、50:50、30:70 and 0:100;
The chromatographic column filler of the preparation HPLC is RP-18.
3rd purpose of the invention, PTP1B suppression is being prepared the invention provides the bibenzyl Aglaia odorata element B
Agent, diabetes medicament, the purposes of obesity drug.And prepare use for diabetic or obese patient's health food
On the way.
In order to reach application purpose, tablet, capsule can be made, granule, oral liquid, sustained release preparation, controlled release preparation, received
The form such as metric system agent or injection.
The present invention has carried out external PTP1B to gained bibenzyl Aglaia odorata element B and has suppressed experiment, as a result shows the compound pair
PTP1B has certain inhibitory activity.Therefore, can be used to prepare PTP1B inhibitor, for diabetes, obesity and its concurrent
In disease drug or health food.
Brief description of the drawings
Fig. 1 PTP1B inhibitory activity test philosophies
Specific embodiment
Chemical structural formula (the Arabic numerals in structural formula of signified bibenzyl Aglaia odorata element B in examples below
It is the mark of carbon atom in chemical constitution):
The preparation of bibenzyl Aglaia odorata element B described in embodiment 1
1. dark green Aglaia odorata leaf extract medicinal extract is prepared
(1) extract solution is prepared
Chinese dark green Aglaia odorata (A.abbreviata) blade (the picking up from In Xishuangbanna of Yunnan) 7.8kg (dry weight) that will be crushed
Extracted three times with the ethanol percolations of 40L 95% respectively, each diacolation 2 days, merge extract solution;
(2) extract medicinal extract is prepared
By said extracted liquid in temperature≤45 DEG C recovery ethanol concentrated under reduced pressure, CE 530g is obtained;
2. isolate and purify
1) above-mentioned CE is scattered in 6L water into suspension, suspension is used into petroleum ether (4L), ethyl acetate successively
(4L) and n-butanol (2L) are extracted three times respectively, and the gained extract petroleum ether that respectively obtains concentrated under reduced pressure extracts medicinal extract (58g), second
Acetoacetic ester extracts medicinal extract (186g) and n-butanol extracts medicinal extract (152g);
2) ethyl acetate extract is carried out into silica gel column chromatography, with petroleum ether/acetone gradient elution;The concentration of gradient elution according to
Secondary is volume ratio 100:0、90:10、80:20、70:30、50:50、30:70 and 0:100, similar stream part is merged according to TLC colour developings
Obtain 4 components (A-D);
3) component B is petroleum ether/acetone volume ratio 8:2 and 7:3 elution fractions are through Sephadex LH-20 gel filtration chromatographies
【Chromatographic column specification:4.0 (diameter) × 120 (length) cm;Sephadex LH-20 gel dry weights:150g】, with dichloromethane/first
Alcohol volume ratio 1:1 wash-out, merges similar stream part and obtains 6 components (B1-B6) according to TLC colour developings;
4) component B5, i.e. methylene chloride/methanol volume ratio 1:1 elution volume is 170~210mL elution fractions, then through system
Standby type HPLC (filler of chromatographic column is RP-18), with acetonitrile/water volume ratio 75:25 wash-outs, flow velocity is 3.5mL/min, during reservation
Between be 8.0min, obtain the compounds of this invention bibenzyl Aglaia odorata element B, be identified as noval chemical compound.
3. Structural Identification
Routinely through the various modern spectral technique such as NMR, HRESIMS, UV, IR and optically-active, it is determined that compound bibenzyl rice
The chemical constitution of young orchid element B, its physicochemical property is as follows:
Yellow powder, molecular formula is C19H20O3;
Ultraviolet spectra UV (MeOH) λmax(logε):233(4.28),272(3.93),298(3.88)nm;
Infrared spectrum IR (KBr) νmax:3340,2944,1602,1519,1451,1206cm–1;
High resolution mass spectrum HR-ESI-MS m/z 297.1476 [M+H]+(calcd for C19H21O3 +,297.1491);
Proton nmr spectra1H NMR (400MHz) and carbon-13 nmr spectra13C NMR (100MHz) data are shown in Table one
Bibenzyl Aglaia odorata element B described in table one1H and13C NMR(ppm in CDCl3)
The test of the PTP1B inhibitory activity of embodiment 2:
Test philosophy:See Fig. 1.Using molecular biology method people's source protein TYR phosphoric acid is expressed in E. coli system
Esterase 1B (hPTP1B) catalyst structure domain, it is purified after hPTP1B recombinant proteins can hydrolyze substrate p-nitrophenyl phosphoric acid (p-
Nitrophenyl phosphate, pNPP) phosphatide key, obtain yellow soluble product p-nitrophenol (p-
Nitrophenol), the product has very strong light absorbs at 410nm, therefore can be with the change of light absorbs at direct detection 410nm
Change and observe the suppression situation of activity change and compound to enzymatic activity of enzyme.
The live body system of standard:10mM Tris.Cl tri- (methylol) aminomethane hydrochloride), pH 7.6,10mM
PNPP, 2%DMSO, 100nM hPTP1B.
Observation index:It is the light absorbs at 410nm that dynamic determines wavelength, and the time is 3 minutes, and its kinetic curve one-level is anti-
The slope answered as enzyme activity index.
Test method:Protein-tyrosine-phosphatase PTP1B for screening is from expression in escherichia coli and purifies
Gst fusion protein.Using ultraviolet suitable substrates p-nitrophenyl phosphoric acid (pNPP), active suppression of the observation various concentrations to recombinase
Make and use, with the medicinal effects of preliminary assessment compound.Before use by sample bibenzyl Aglaia odorata element B be dissolved in DMSO be made into it is appropriate dense
Degree, 3 times of dilutions, 7 dilution factors set three wells, take 2 μ L samples solution and add 96 orifice plates, are subsequently adding 88 μ L assay
Mix (assay buffer, pNPP, H2O), 10 μ L PTP1B are added.96 orifice plates are placed in dynamic detection ripple on VERSAmax
Absorbance value is detected at a length of 410nm, the time is 3 minutes.
The judge of experimental result and explanation:
The selection result is the percent inhibition to enzymatic activity when compound bibenzyl Aglaia odorata element B concentration is 20 μ g/ml, is suppressed
Rate be higher than 50% when, routinely screening (by inhibiting rate higher than 50% detected diluted chemical compound into different concentration, according to above-mentioned
Method of testing is reacted, and all experiments are respectively provided with multiple holes) draw IC50, the IC of positive control oleanolic acid50For 2.74 ±
0.20μM。
Experimental result:ICs of the compounds of this invention bibenzyl Aglaia odorata element B to PTP1B enzyme inhibition activities50It is 45.74 ± 1.79
μM。
Experiment conclusion:By molecular biology test, it can be seen that compound bibenzyl Aglaia odorata element B is to protein tyrosine ester
Enzyme 1B (PTP1B) has preferable inhibitory activity.Therefore, bibenzyl Aglaia odorata element B of the invention can be used to prepare diabetes, obesity
In the medicine of disease and its complication.