CN116041418A - Hydroxyproline-serine compound, and preparation method and application thereof - Google Patents
Hydroxyproline-serine compound, and preparation method and application thereof Download PDFInfo
- Publication number
- CN116041418A CN116041418A CN202111261378.3A CN202111261378A CN116041418A CN 116041418 A CN116041418 A CN 116041418A CN 202111261378 A CN202111261378 A CN 202111261378A CN 116041418 A CN116041418 A CN 116041418A
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- Prior art keywords
- compound
- hydroxyproline
- serine
- acid
- dissolving
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- -1 Hydroxyproline-serine compound Chemical class 0.000 title claims abstract description 16
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- BCPPKUFKSJSTMK-PPKHZWRWSA-N (2s)-2-amino-3-hydroxypropanoic acid;(2s,4r)-4-hydroxypyrrolidine-2-carboxylic acid Chemical compound OC[C@H](N)C(O)=O.O[C@H]1CN[C@H](C(O)=O)C1 BCPPKUFKSJSTMK-PPKHZWRWSA-N 0.000 claims abstract description 8
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K5/00—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention belongs to the technical field of medicines, relates to a hydroxyproline-serine compound and a preparation method thereof, and also relates to a pharmaceutical composition containing the compound and application of the compound in treating inflammatory bowel diseases. The invention provides a hydroxyproline-serine compound with different spatial configurations, a preparation method thereof, a pharmaceutical composition containing the compound, and application of the hydroxyproline-serine with different spatial configurations in preparation of medicines for treating IBD. The structural formula of the hydroxyproline-serine compound or the salt thereof is shown as follows.
Description
Technical Field
The invention belongs to the technical field of medicines, relates to a hydroxyproline-serine compound and a preparation method thereof, and also relates to a pharmaceutical composition containing the compound and application of the compound in treating inflammatory bowel diseases.
Background
Inflammatory Bowel Disease (IBD) is a chronic, idiopathic enteritis that affects the entire gastrointestinal tract, increasing the risk of intestinal cancer. IBD mainly includes both Ulcerative Colitis (UC) and Crohn's Disease (CD), and is clinically manifested mainly as diarrhea, abdominal pain, mucopurulent stool, weight loss, etc., accompanied by parenteral diseases such as arthritis, erythema nodosum, iritis, ankylosing spondylitis, sclerosing cholangitis, etc.
Currently, IBD is treated with an emphasis on controlling mucosal inflammation and suppressing overactive immune response, and common medications mainly include aminosalicylic acids (such as sulfasalazine), glucocorticoids (such as methylprednisolone), and immunosuppressants (such as cyclosporine, tacrolimus, etc.). The medicines have the defects of long administration time, low overall response rate, serious side effects and the like. Therefore, there is a great need to develop highly effective and low-toxic IBD drugs.
trans-L-hydroxyproline-L-serine is a useful anti-hepatitis drugThe dipeptide isolated from the injection has a certain anti-inflammatory activity. Bile induced by trans-L-hydroxyproline-L-serine to alpha-naphthyl isothiocyanate (ANIT)The stasis hepatitis has liver protection function, and the action mechanism is as follows: (1) Enhancing free radical scavenging ability of liver tissue and inhibiting lipid peroxidation damage of liver cells; (2) Reducing the aggregation of inflammatory cells in areas of inflammation and tissue damage; (3) inhibiting the release of inflammatory cytokines. At present, no report on the use of trans-L-hydroxyproline-L-serine for the treatment of IBD has been found.
In recent years, research on chiral drugs has become a hotspot in the development of new drugs. The spatial configuration of chiral drugs is closely related to the therapeutic effect of the drugs, and the research on the drug effect difference between enantiomers of chiral drugs is particularly important. trans-L-hydroxyproline-L-serine is composed of two amino acids, trans-L-hydroxyproline and L-serine, where hydroxyproline and serine share 3 chiral carbon atoms and 8 stereoisomers exist. There is no report in the prior art of the use of stereoisomer compounds for the treatment of IBD. And the therapeutic effect on IBD is different due to the different configuration of the compounds.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a hydroxyproline-serine compound with different spatial configurations, a preparation method thereof, a pharmaceutical composition containing the compound and application of the hydroxyproline-serine with different spatial configurations in preparing medicines for treating IBD.
The invention is realized by the following technical scheme:
the present invention provides, first of all, a hydroxyproline-serine compound having the following structure:
the invention further provides hydroxyproline-serine compounds or salts thereof of the following structure:
the invention also provides a preparation method of the hydroxyproline-serine compound, which comprises the following steps:
the preparation method of the hydroxyproline-serine compound comprises the following steps:
the first step: dissolving a compound I, a compound II and N, N' -dicyclohexyl carbodiimide (DCC) in a reaction solvent, charging nitrogen, reacting at 25-30 ℃, and performing rotary evaporation to obtain a compound III; the molar ratio of the compound I to the compound II is 0.1-10:1.
And a second step of: dissolving a compound III and a compound IV in a reaction solvent containing N, N-Diisopropylethylamine (DIPEA), and reacting at 25-30 ℃ for 2-24 hours to obtain a compound V; the molar ratio of the compound III to the compound IV is 0.1-10:1.
And a third step of: and (3) dissolving the compound V in different acids to obtain the target compound M.
Wherein the reaction solvent in the first step is one or a combination of two or more of dichloromethane, N-dimethylformamide, tetrahydrofuran, dioxane and N, N-dimethylacetamide.
The reaction solvent in the second step is one or a combination of two or more of dichloromethane, N-dimethylformamide, tetrahydrofuran, dioxane and N, N-dimethylacetamide.
The acid in the third step is one or a combination of two or more of hydrochloric acid, acetic acid, formic acid, maleic acid, lactic acid, carbonic acid, trifluoroacetic acid, phosphoric acid and p-toluenesulfonic acid.
The synthetic route is as follows:
is-> Is->a: n, N' -Dicyclohexylcarbodiimide (DCC), reaction solvents (dichloromethane, N-dimethylformamide, tetrahydrofuran, dioxane, N-dimethylacetamide);
b: n, N-Diisopropylethylamine (DIPEA), a reaction solvent (dichloromethane, N-dimethylformamide, tetrahydrofuran, dioxane, N-dimethylacetamide);
c: acid: hydrochloric acid, acetic acid, formic acid, maleic acid, lactic acid, carbonic acid, trifluoroacetic acid, phosphoric acid, and p-toluenesulfonic acid.
The following compounds were obtained, respectively, according to their different reactant configurations: one of (a) trans-4-L-hydroxyproline-L-serine, (B) trans-4-L-hydroxyproline-D-serine, (C) trans-4-D-hydroxyproline-L-serine, (D) trans-4-D-hydroxyproline-D-serine, (E) cis-4-L-hydroxyproline-L-serine, (F) cis-4-L-hydroxyproline-D-serine, (G) cis-4-D-hydroxyproline-L-serine, and (H) cis-4-D-hydroxyproline-D-serine:
the invention also provides a pharmaceutical composition comprising the hydroxyproline-serine compound or the salt thereof and a pharmaceutically acceptable carrier or excipient.
The invention provides application of the hydroxyproline-serine compound or the salt thereof in preparing medicines for treating inflammatory bowel diseases.
The invention also provides application of the pharmaceutical composition in preparing medicines for treating inflammatory bowel diseases.
The inflammatory bowel disease is colitis.
The beneficial effects of the invention are as follows: based on that hydroxyproline has 2 chiral carbon atoms and serine has 1 chiral carbon atom, the interaction between chiral medicine and organism has stereo selectivity difference, so that the stereo configuration and pharmacodynamics relation of chiral medicine are compact. According to the invention, 4 different-configuration compounds III are respectively reacted with 2 different-configuration compounds IV to form 8 different-configuration hydroxyproline-serine, and the effect of different enantiomers in treating IBD is examined. In a mouse inflammatory bowel disease model caused by Dextran Sodium Sulfate (DSS), each compound has the effect of improving the disease state of colonitis to different degrees, wherein the compound of the embodiment 1, the compound of the embodiment 2, the compound of the embodiment 4 and the compound of the embodiment 8 can effectively improve the disease state of colonitis, and the compound is particularly characterized by improving the weight loss caused by the disease, improving the survival rate, reducing the Disease Activity Index (DAI) score and prolonging the colon length. Among them, the compound of example 8 showed the most excellent pharmacodynamic effect, providing possibility for treating DSS-induced IBD.
Drawings
FIG. 1 is a single crystal X-ray diffraction pattern of the compound of example 1.
Figure 2 is a diagram of a pharmacodynamic dosing regimen of the compounds of examples 1-8.
Figure 3 is a graph of changes in mouse body weight of the compounds of examples 1-8 before and after treatment for mouse IBD.
Figure 4 is a graph of the mouse DAI scores of the compounds of examples 1-8 following treatment for mouse IBD.
Figure 5 is a graph comparing colon length of mice treated with the compounds of examples 1-8.
Detailed Description
Example 1: preparation of trans-4-L-hydroxyproline-L-serine (Compound A):
the first step: dissolving a compound I-1 and a compound II, N' -dicyclohexyl carbodiimide (DCC) in tetrahydrofuran, charging nitrogen, reacting for 2 hours at 25 ℃, and performing rotary evaporation to obtain a compound III-1;
and a second step of: dissolving the compound III-1 and the compound IV-1 in dichloromethane containing N, N-Diisopropylethylamine (DIPEA), reacting for 2 hours at 25 ℃, evaporating the solvent under reduced pressure, diluting the residue with dichloromethane, washing with 5% phosphoric acid aqueous solution, aqueous solution and saturated salt in sequence, filtering, mixing the filtrate with silica gel, performing silica gel column chromatography, performing gradient elution on dichloromethane and methanol (100:1-1:100), collecting column chromatography, and concentrating to obtain the compound V-1;
and a third step of: dissolving the compound V-1 in hydrochloric acid, filtering, washing, and freeze-drying to obtain the compound A (trans-4-L-hydroxyproline-L-serine).
Example 2: preparation of trans-4-L-hydroxyproline-D-serine (Compound B):
the first step: dissolving a compound I-1 and a compound II, N' -dicyclohexyl carbodiimide (DCC) in tetrahydrofuran, charging nitrogen, reacting for 2 hours at 25 ℃, and performing rotary evaporation to obtain a compound III-1;
and a second step of: dissolving the compound III-1 and the compound IV-2 in dichloromethane containing N, N-Diisopropylethylamine (DIPEA), reacting for 2 hours at 25 ℃, evaporating the solvent under reduced pressure, diluting the residue with dichloromethane, washing with 5% phosphoric acid aqueous solution, aqueous solution and saturated salt in sequence, filtering, mixing the filtrate with silica gel, performing silica gel column chromatography, performing gradient elution on dichloromethane and methanol (100:1-1:100), collecting column chromatography, and concentrating to obtain the compound V-2;
and a third step of: dissolving the compound V-2 in hydrochloric acid, filtering, washing, and freeze-drying to obtain the compound B (trans-4-L-hydroxyproline-D-serine).
Example 3: preparation of trans-4-D-hydroxyproline-L-serine (Compound C):
the first step: dissolving a compound I-2 and a compound II, N' -dicyclohexyl carbodiimide (DCC) in tetrahydrofuran, charging nitrogen, reacting for 2 hours at 25 ℃, and performing rotary evaporation to obtain a compound III-2;
and a second step of: dissolving the compound III-2 and the compound IV-1 in dichloromethane containing N, N-Diisopropylethylamine (DIPEA), reacting for 2 hours at 25 ℃, evaporating the solvent under reduced pressure, diluting the residue with dichloromethane, washing with 5% phosphoric acid aqueous solution, aqueous solution and saturated salt in sequence, filtering, mixing the filtrate with silica gel, performing silica gel column chromatography, gradient eluting with dichloromethane and methanol (100:1-1:100), collecting column chromatography, and concentrating to obtain a compound V-3;
and a third step of: dissolving the compound V-3 in hydrochloric acid, filtering, washing, and freeze-drying to obtain the compound C (trans-4-D-hydroxyproline-L-serine).
Example 4: preparation of trans-4-D-hydroxyproline-D-serine (Compound D):
the first step: dissolving a compound I-2 and a compound II, N' -dicyclohexyl carbodiimide (DCC) in tetrahydrofuran, charging nitrogen, reacting for 2 hours at 25 ℃, and performing rotary evaporation to obtain a compound III-2;
and a second step of: dissolving the compound III-2 and the compound IV-2 in dichloromethane containing N, N-Diisopropylethylamine (DIPEA), reacting for 2 hours at 25 ℃, evaporating the solvent under reduced pressure, diluting the residue with dichloromethane, washing with 5% phosphoric acid aqueous solution, aqueous solution and saturated salt in sequence, filtering, mixing the filtrate with silica gel, performing silica gel column chromatography, gradient eluting with dichloromethane and methanol (100:1-1:100), collecting column chromatography, and concentrating to obtain a compound V-4;
and a third step of: dissolving the compound V-4 in hydrochloric acid, filtering, washing, and freeze-drying to obtain the compound D (trans-4-D-hydroxyproline-D-serine).
Example 5: preparation of cis-4-L-hydroxyproline-L-serine (Compound E):
the first step: dissolving a compound I-3 and a compound II, N' -dicyclohexyl carbodiimide (DCC) in tetrahydrofuran, charging nitrogen, reacting for 2 hours at 25 ℃, and performing rotary evaporation to obtain a compound III-3;
and a second step of: dissolving the compound III-3 and the compound IV-1 in dichloromethane containing N, N-Diisopropylethylamine (DIPEA), reacting for 2 hours at 25 ℃, evaporating the solvent under reduced pressure, diluting the residue with dichloromethane, washing with 5% phosphoric acid aqueous solution, aqueous solution and saturated salt in sequence, filtering, mixing the filtrate with silica gel, performing silica gel column chromatography, gradient eluting with dichloromethane and methanol (100:1-1:100), collecting column chromatography, and concentrating to obtain a compound V-5;
and a third step of: dissolving the compound V-5 in hydrochloric acid, filtering, washing, and freeze-drying to obtain the compound E (cis-4-L-hydroxyproline-L-serine).
Example 6: preparation of cis-4-L-hydroxyproline-D-serine (Compound F):
the first step: dissolving a compound I-3 and a compound II, N' -dicyclohexyl carbodiimide (DCC) in tetrahydrofuran, charging nitrogen, reacting for 2 hours at 25 ℃, and performing rotary evaporation to obtain a compound III-3;
and a second step of: dissolving the compound III-3 and the compound IV-2 in dichloromethane containing N, N-Diisopropylethylamine (DIPEA), reacting for 2 hours at 25 ℃, evaporating the solvent under reduced pressure, diluting the residue with dichloromethane, washing with 5% phosphoric acid aqueous solution, aqueous solution and saturated salt in sequence, filtering, mixing the filtrate with silica gel, performing silica gel column chromatography, gradient eluting with dichloromethane and methanol (100:1-1:100), collecting column chromatography, and concentrating to obtain a compound V-6;
and a third step of: dissolving the compound V-6 in hydrochloric acid, filtering, washing, and freeze-drying to obtain the compound F (cis-4-L-hydroxyproline-D-serine).
Example 7: preparation of cis-4-D-hydroxyproline-L-serine (Compound G):
the first step: dissolving a compound I-4 and a compound II, N' -dicyclohexyl carbodiimide (DCC) in tetrahydrofuran, charging nitrogen, reacting for 2 hours at 25 ℃, and performing rotary evaporation to obtain a compound III-4;
and a second step of: dissolving the compound III-4 and the compound IV-1 in dichloromethane containing N, N-Diisopropylethylamine (DIPEA), reacting for 2 hours at 25 ℃, evaporating the solvent under reduced pressure, diluting the residue with dichloromethane, washing with 5% phosphoric acid aqueous solution, aqueous solution and saturated salt in sequence, filtering, mixing the filtrate with silica gel, performing silica gel column chromatography, gradient eluting with dichloromethane and methanol (100:1-1:100), collecting column chromatography, and concentrating to obtain a compound V-7;
and a third step of: dissolving the compound V-7 in hydrochloric acid, filtering, washing, and freeze-drying to obtain the compound G (cis-4-D-hydroxyproline-L-serine).
Example 8: cis-4-D-hydroxyproline-D-serine (compound H):
the first step: dissolving a compound I-4 and a compound II, N' -dicyclohexyl carbodiimide (DCC) in tetrahydrofuran, charging nitrogen, reacting for 2 hours at 25 ℃, and performing rotary evaporation to obtain a compound III-4;
and a second step of: dissolving a compound III-4 and a compound IV-2 in dichloromethane containing N, N-Diisopropylethylamine (DIPEA), reacting for 2 hours at 25 ℃, evaporating the solvent under reduced pressure, diluting the residue with dichloromethane, washing with 5% phosphoric acid aqueous solution, aqueous solution and saturated salt in sequence, filtering, mixing the filtrate with silica gel, performing silica gel column chromatography, performing gradient elution on dichloromethane and methanol (100:1-1:100), collecting column chromatography, and concentrating to obtain a compound V-8;
and a third step of: dissolving the compound V-8 in hydrochloric acid, filtering, washing, and freeze-drying to obtain the compound H (cis-4-D-hydroxyproline-D-serine).
The identification information for the compounds of examples 1-8 is shown in Table 1:
TABLE 1 information about the compounds of examples 1-8
Example 9: in vivo pharmacodynamics study of C57BL/6 mice
Dosing regimen
Healthy C57BL/6 mice are taken as model animals, 8 mice in each group are randomly grouped, dextran sodium sulfate (DSS, 3%) is used for modeling, and the rest groups are free to drink 3% DSS solution for 5 days except for free drinking of blank groups, so that an experimental colonitis model of the mice is established, and the administration scheme is shown in figure 2. The experiment was divided into 11 groups, which were blank group, model group, positive drug sulfasalazine group, example 1 compound group, example 2 compound group, example 3 compound group, example 4 compound group, example 5 compound group, example 6 compound group, example 7 compound group, example 8 compound group. Wherein sulfasalazine (250 mg/kg) was orally administered once a day and the compounds of examples 1-8 (25 mg/kg) were orally administered twice a day. Both the normal control and model groups were given the same amount of physiological saline instead of the compound of the example to C57BL/6 mice.
Detection index and method
Rate of change in body weight
Mice were weighed daily during the course of the experiment. The rate of change of the body weight of the mice was calculated.
Mouse weight change rate (%) = (mouse weight-mouse initial weight)/mouse initial weight×100% of the total weight of the mouse
Disease activity index scoring
Mice were observed daily for body weight, stool character, and blood stool status during the experiment and scored for scoring requirements as shown in table 2. The DAI index is the sum of the weight loss score, fecal trait score, and blood stool score. Wherein the blood and stool fraction is scored based on the color development condition measured by the fecal occult blood kit, and the specific steps are as follows: firstly, a mung bean-sized stool sample is picked up and placed on a whiteboard, and O-tolidine Solution drops (about 0.1 mL) are added dropwise to different positions of the stool. Then 2 drops (about 0.1 mL) of freshly prepared oxidant are added dropwise, the time is immediately counted and the color change is observed, and the judgment is carried out according to the color change within 2 minutes.
TABLE 2 disease Activity index scoring
Determination of colon length
DSS induces ulcerative colitis models are mainly characterized by shortening of the colon and concomitant edema. The length of the colon can be used to some extent as an indicator of the severity of inflammation. The method comprises the following specific steps: the abdominal cavity was rapidly dissected, the colon and distal ileum were freed, the entire intestinal segment from the anus to the cecum end was removed, and the entire intestinal segment length from each group of anus to the cecum end was measured.
Statistical treatment
Data were processed with GraphPad prism5.0 and analyzed using independent sample t-test. The results are shown in fig. 3, 4 and 5, # #, p <0.005 compared to the blank; * P <0.05 compared to the modeling group; * P <0.01 compared to modeling; * P <0.005 compared to modeling.
Results
TABLE 3 Experimental results for the treatment of ulcerative colitis with the Compounds of examples 1-8
Conclusion(s)
The results are shown in figures 3, 4 and 5, and it is clear from the results that each of the compounds of examples 1-8 has a therapeutic effect on IBD when administered. The compounds of example 1, example 2, example 4, and example 8 were effective in ameliorating the disease state of colitis, as compared to the model group, and were characterized by ameliorating weight loss due to disease (fig. 3), increasing survival, decreasing Disease Activity Index (DAI) score (fig. 4), and increasing colon length (fig. 5). Among them, the compound of example 8 showed the most excellent pharmacodynamic effect, providing possibility for treating DSS-induced IBD.
Claims (10)
3. a process for the preparation of hydroxyproline-serine compounds according to claim 1, characterized in that:
the first step: dissolving a compound I, a compound II and N, N' -dicyclohexyl carbodiimide in a reaction solvent, filling nitrogen, reacting, and performing rotary evaporation to obtain a compound III;
and a second step of: dissolving a compound III and a compound IV in a reaction solvent containing N, N-diisopropylethylamine, and reacting to obtain a compound V;
and a third step of: dissolving the compound V in acid to obtain a target compound M;
wherein ,
4. The process according to claim 3, wherein the reaction solvent used in the first or second step is one or a combination of two or more of dichloromethane, N-dimethylformamide, tetrahydrofuran, dioxane, and N, N-dimethylacetamide.
5. The process according to claim 3, wherein the acid in the third step is hydrochloric acid, acetic acid, formic acid, maleic acid, lactic acid, carbonic acid, trifluoroacetic acid, phosphoric acid, or p-toluenesulfonic acid.
6. A process according to claim 3, wherein in the first step the molar ratio of compound i to compound ii is from 0.1 to 10:1.
7. a process according to claim 3, wherein in the second step the molar ratio of compound iii to compound iv is from 0.1 to 10:1.
8. a pharmaceutical composition comprising one or more of the hydroxyproline-serine compounds or salts thereof according to claim 1 or 2 and a pharmaceutically acceptable carrier or excipient thereof.
9. A pharmaceutical preparation comprising one or more of the hydroxyproline-serine compounds or salts thereof according to claim 1 or 2 or the pharmaceutical composition according to claim 8.
10. Use of one or more of the hydroxyproline-serine compounds of claim 1 or 2 or the pharmaceutical composition of claim 8 or the pharmaceutical formulation of claim 9 for the preparation of a medicament for the treatment of inflammatory bowel disease.
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