WO2019192454A1 - 新型小分子免疫激动剂和免疫靶向化合物及其应用 - Google Patents

新型小分子免疫激动剂和免疫靶向化合物及其应用 Download PDF

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WO2019192454A1
WO2019192454A1 PCT/CN2019/080945 CN2019080945W WO2019192454A1 WO 2019192454 A1 WO2019192454 A1 WO 2019192454A1 CN 2019080945 W CN2019080945 W CN 2019080945W WO 2019192454 A1 WO2019192454 A1 WO 2019192454A1
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small molecule
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WO2019192454A9 (zh
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靳广毅
王竹林
唐黎
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深圳大学
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Definitions

  • the present invention relates to a series of small molecule immunoagonists which are homologues and their immunotargeting compounds which are coupled with targeted drugs and their applications, and which belong to the interdisciplinary field of medicinal chemistry and immunology.
  • TLRs Toll-like receptors
  • TLR7 can be activated by synthetic small molecule compounds, induces immune regulation in the body, and plays an important role in antiviral and antitumor effects (Huju Chi, Chunman Li, Flora Sha Zhao, Li Zhang, Tzi Bun Ng, Guangyi Jin and Ou Sha. Anti-tumor Activity of Toll-Like Receptor 7 Agonists.Front Pharmacol.2017 May 31;8:304.doi:10.3389/fphar.2017.00304).
  • TKI thyroid kinase inhibitor
  • TKI tyrosine kinase inhibitor
  • TKI antagonizes the immune cell activation of TLR7 agonists and inhibits the production of immune-activated cytokines (Scientific Reports, 2016 Dec 21; 6: 39598. doi: 10.1038/srep39598).
  • An object of the present invention is to provide a series of small molecule immunoagonists having immunostimulating action and applications thereof, and to provide an immunotargeting compound obtained by coupling the above small molecule immunoagonist with a targeting drug and application.
  • a first aspect of the invention relates to a small molecule immunoagonist of formula (I) or an isomer or pharmaceutically acceptable salt thereof:
  • a 1 represents O or C
  • a 2 represents a nitro group, an amino group, an isocyanate group, an alkyleneamino group, an alkylene isocyanate group or a group selected from the group consisting of the formula (II) or the formula (III):
  • R 1 and R 2 each independently represent (CH 2 ) p (NH) q , wherein p is 0, 1 or 2, and q is 0, 1 or 2;
  • R 3 represents O or S
  • the carbon atom in the (CH 2 ) s near the carbonyl group may be substituted with a group selected from the group consisting of -NHBoc, amino group, -NHFmoc, Or forming a double bond with another carbon atom;
  • R 5 represents a hydroxyl group, an alkoxy group, a hydroxylamine group, a vinyl group or a group selected from the group consisting of:
  • R 6 represents an alkyl group or a group selected from the group consisting of:
  • the isomer is an isomer or an enantiomer.
  • the invention relates to a small molecule immunoagonist of formula (I) or an isomer or pharmaceutically acceptable salt thereof:
  • a 1 represents O or C
  • a 2 represents a nitro group, an amino group, an isocyanate group, a C 1 -C 6 alkyleneamino group, a C 1 -C 6 alkylene isocyanate group or a group selected from the formula (II) or the formula (III):
  • R 1 and R 2 each independently represent (CH 2 ) p (NH) q , wherein p is 0 or 1, q is 0 or 1;
  • R 3 represents O or S
  • the carbon atom near the carbonyl group may be substituted with a group selected from the group consisting of -NHBoc, amino group, -NHFmoc, Or forming a double bond with another carbon atom;
  • R 5 represents a hydroxyl group, a C 1 -C 6 alkoxy group, a hydroxylamine group, a vinyl group or a group selected from the group consisting of:
  • R 6 represents a C 1 -C 6 alkyl group or a group selected from the group consisting of:
  • the invention relates to a small molecule immunoagonist of formula (I) or an isomer or pharmaceutically acceptable salt thereof:
  • a 1 represents O or C
  • a 2 represents a nitro group, an amino group, an isocyanate group, a methyleneamino group, a methylene isocyanate group or a group selected from the group consisting of the formula (II) or the formula (III):
  • R 1 and R 2 each independently represent (CH 2 ) p (NH) q , wherein p is 0 or 1, q is 0 or 1;
  • R 3 represents O or S
  • the carbon atom near the carbonyl group may be substituted with a group selected from the group consisting of -NHBoc, amino group, -NHFmoc, Or forming a double bond with another carbon atom;
  • R 5 represents a hydroxyl group, a methoxy group, a hydroxylamine group, a vinyl group or a group selected from the group consisting of:
  • R 6 represents a methyl group or a group selected from the group consisting of:
  • the invention relates to a small molecule immunoagonist of formula (I), or an isomer thereof or a pharmaceutically acceptable salt thereof, which is a SZU series of compounds selected from the group consisting of the following structural formulas (see Table 1 below) Or a pharmaceutically acceptable salt thereof: SZU-104, SZU-105, SZU-107, SZU-108, SZU-109, SZU-110, SZU-111, SZU-112, SZU-113, SZU-115, SZU-118, SZU-120, SZU-127, SZU-128, SZU-129, SZU-131, SZU-132, SZU-133, SZU-134, SZU-135, SZU-136, SZU-137, SZU- 138, SZU-139, SZU-140, SZU-142, SZU-143, SZU-144, SZU-145, SZU-149, SZU-104, S
  • a second aspect of the invention relates to an immunotargeting compound or a pharmaceutically acceptable salt thereof, which comprises a small molecule immunoagonist or an addition product thereof with a thiol-containing polypeptide such as glutathione and a targeting drug or antibody
  • a thiol-containing polypeptide such as glutathione
  • the valence coupling is formed, and its general formula is expressed as follows:
  • TLA represents a small molecule immunoagonist or an addition product thereof with a thiol-containing polypeptide such as glutathione;
  • Tar represents a targeting drug or antibody;
  • n and m each independently represent a value between 1 and 5;
  • Representative of a linking chain which is a linear or branched alkane or polyethylene glycol chain, the two ends of which are directly covalently linked to TLA and/or Tar or covalently linked to TLA and/or Tar by other groups.
  • the small molecule immunoagonist comprises the small molecule immunoagonist of the first aspect of the invention and a compound selected from the group consisting of:
  • the small molecule immunoagonist is a SZU series of compounds selected from the following (specific structural formulas are shown in Table 1 below) or a pharmaceutically acceptable salt thereof: SZU-102, SZU-104, SZU- 105, SZU-106, SZU-107, SZU-108, SZU-109, SZU-110, SZU-111, SZU-112, SZU-113, SZU-115, SZU-118, SZU-120, SZU-127, SZU-128, SZU-129, SZU-131, SZU-132, SZU-133, SZU-134, SZU-135, SZU-136, SZU-137, SZU-138, SZU-139, SZU-140, SZU- 142, SZU-143, SZU-144, SZU-145, SZU-149, SZU-158, SZU-159, SZU-
  • the TLA is a compound selected from the group consisting of: SZU-103-GSH, SZU-114-GSH, SZU-117-GSH, SZU-122-GSH, SZU-127-GSH, SZU-133-GSH, SZU-138-GSH or SZU-144-GSH.
  • the Tar is selected from at least one of the following: Dasatinib, Imatinib, Saracatinib, Ponatinib, Nilotinib, Danusertib, AT9283 Degrasyn, Bafetinib, kw-2449, nyp-bhg712, dcc-2036, GZD824.
  • GNF-2 GNF-2, PD173955, GNF-5, Bosutinib, Gefitinib, Erlotinib, Sunitinib, Ruxolitinib, Tofacitinib, Lapatinib, Vandetanib, Sorafenib, Sunitinib, Axitinib, Nintedanib, Regorafenib, Pazopanib, Lenvatinib, Crizotinib, Ceritinib, Cabozantinib, DWF, Afatinib, Ibrutinib, Niraparib, Palbociclib, B43, KU004, Foreinib, KRCA-0008, PF-06439015, PF-06463922, Canerlinib, GSA-10, GW2974, GW583340, W24002, CP-380736, D2667, Mubritinib, PD153035, PD168393, Pelitin
  • the Tar is selected from at least one of the group consisting of a TKI, an EGFR inhibitor, a KRAS inhibitor, a BRAF inhibitor, a BTK inhibitor, a BRD4 inhibitor, a PD-L1 inhibitor, a PD- 1 inhibitor, OX40 agonist, PARP inhibitor or CDK4/6 inhibitor.
  • the other group comprises an amide, an alkoxy bond, an alkylthio bond, a substituted amine group, a quaternary ammonium salt, a heterocyclic ring formed by a cilck reaction, an amino acid group which can be dissociated by a protease, a urea group Group or thiourea group.
  • the immunotargeting compound or a pharmaceutically acceptable salt thereof is a SZU series compound selected from the following (specific structural formula is shown in Table 4 below) or a pharmaceutically acceptable salt thereof: SZU-116, SZU-119, SZU-124, SZU-125, SZU-146, SZU-147, SZU-168, SZU-169, SZU-174, SZU-175, SZU-176, SZU-177, SZU-178, SZU- 179, SZU-180, SZU-181, SZU-158-PD-L1, SZU-158-OX40, SZU-158-PD-1 or SZU-136-miRNA21.
  • a third aspect of the invention relates to the small molecule immunoagonist of the formula (I) according to the first aspect of the invention, or an isomer or pharmaceutically acceptable salt thereof, the compounds SZU-101, SZU-103, SZU-114, Use of SZU-117, SZU-122 and SZU-130 (see Table 2 for specific structural formula) and the immunotargeting compound of the second aspect of the invention or a pharmaceutically acceptable salt thereof for the preparation of a medicament for participating in immunomodulation .
  • a fourth aspect of the invention relates to the small molecule immunoagonist of the formula (I) according to the first aspect of the invention, or an isomer or pharmaceutically acceptable salt thereof, the compounds SZU-101, SZU-103, SZU-114, SZU-117, SZU-122 and SZU-130 and the immunotargeting compound of the second aspect of the invention or a pharmaceutically acceptable salt thereof, in the preparation of an antitumor drug, an antiviral drug and a drug for targeting a scavenging protein use.
  • the invention also relates to the use of the compound SZU-136-miRNA21 and analogs thereof for the preparation of a medicament for immunologically targeting RNA.
  • the compound SZU-136-miRNA21 and its analogs serve as immunologically targeted small molecule RNAs.
  • the medicament may be in various dosage forms, including solid preparations, liquid preparations, complexes of the drug with various carriers, or crystalline water complexes of the drug.
  • the invention also relates to the use of the compounds SZU-179, SZU-180 and SZU-181 for the preparation of anti-AIDS and anti-hepatitis B drugs.
  • the compounds SZU-179, SZU-180 and SZU-181 are used as antiviral immunotargeting compounds.
  • the invention further relates to the use of the compounds SZU-161 and SZU-162 for determining the degree of coupling of small molecule immunoagonist-conjugated protein drugs and cells.
  • the compounds SZU-161 and SZU-162 act as small molecule immunoagonists with specific ultraviolet absorption.
  • the invention further relates to the use of the compounds SZU-116 and SZU-124 for observing the cellular uptake and in vivo distribution of a research protein or a targeted drug, wherein the compounds SZU-116 and SZU-124 are coupled to a protein or a targeting agent.
  • the compounds SZU-116 and SZU-124 are used as optical tracing properties of small molecule immuno-agonist chromogenic indicators. When coupled with proteins or targeted drugs, they can display the cellular absorption and in vivo distribution of proteins or targeted drugs in real time. .
  • the invention also relates to the use of the compounds SZU-114, SZU-117, SZU-122, SZU-127, SZU-133, SZU-138, SZU-143 in the preparation of a medicament having immunotargeting bifunctionality, wherein the compound SZU- 114.
  • SZU-117, SZU-122, SZU-127, SZU-133, SZU-138, SZU-143 are coupled to a targeting drug or antibody.
  • the small molecule immunoagonists of the invention have immunological activation by themselves.
  • the combination of TKI and TLR7 immunoagonists results in TKI antagonizing immune cell activation of TLR7 agonists and inhibiting the production of immune activated cytokines.
  • the inventors covalently coupled the TKI targeting drug with the TLR7 small molecule immunoagonist, it was unexpectedly found that such covalently coupled compounds not only maintained or improved the immune activation of small molecule immunoagonists, but also improved The anti-tumor effect of the targeted drug.
  • Such immunotargeting compounds obtained by the method of the invention are of great significance for the long-term and efficient treatment of tumors.
  • the structural formulas of the compounds SZU-103, SZU-114, SZU-117, SZU-122 and SZU-130 and preparation methods thereof are disclosed in Chinese Patent Application CN107281483A.
  • the structural formula of the compounds SZU-102 and SZU-106 and the preparation method thereof are disclosed in Chinese Patent Application No. CN106267188A, wherein the compound SZU-102 is the compound 1 therein, and the compound SZU-106 is the compound 19 therein.
  • some of the small molecule immunoagonists in Tables 1 and 2 can form an adduct with a thiol-containing polypeptide such as glutathione (GSH), which is capable of targeting glutathione transferase, synergistic chemotherapy drugs, irreversible TKI targeted drugs and other irreversible targeted drugs to improve the treatment of the disease, eliminate drug resistance, and activate the immune effect.
  • GSH glutathione
  • thiol-containing compounds include, for example, 2-methylamine ethanethiol and SZU-033T Wait.
  • the small molecule immunoagonists in Tables 1 and 2 and the partial small molecule immunoagonists in Table 3 and the compounds formed by GSH can be coupled with a targeting agent to obtain a bifunctional immunotargeting compound having an immunotargeting effect.
  • the immunotargeting compounds are shown in Table 4 below:
  • Small molecule immunoagonists (exemplified by SZU-137) are coupled to the second route of targeted drug synthesis:
  • the same method as described above is also applicable to the formation of an immunotargeting compound by coupling with SZU-144 or SZU-133 and a targeting drug.
  • the linker may also be a simple linear alkane or may be replaced according to various needs.
  • a carboxyl-containing small molecule immunoagonist (eg, SZU-138) can couple a antibody to form a soluble functional protein polypeptide conjugate by an addition reaction and a coupling reaction, which can form a salt due to a dimethylamino group.
  • the formation of an ionized positive charge is beneficial to improve the therapeutic effect and water solubility, thereby solving the solubility problem of the coupled product.
  • carboxyl group-containing small molecule immunoagonist can also be coupled to two different targeted drugs to form a dual targeting immune compound.
  • Small molecule immunoagonists using SZU-171 as an example are coupled with the third route of targeted drug synthesis:
  • the product formed by small molecule immunoagonists and glutathione can also be coupled with two different targeted drugs to improve efficacy.
  • the targeted drug may be various TKI drugs and various tumor targeting drugs, and may also be antibodies such as CD3 antibody, PD-1 antibody, OX40 antibody, CD19 antibody, CD20 antibody, HER2 antibody, MUC1 antibody and various tumors. Protein antibodies and antibodies to pathogens, etc.
  • the coupling chain therein may be various alkane chains or alkoxy chains, etc., and may be adjusted according to the needs of dissolution and metabolism optimization.
  • the above double-conjugated immunotargeting compound has the advantages of forming two positive ion amino groups (amino salt-HN + -, -NH + 3 ), high solubility, and the double target can be adjusted and optimized as needed; for example, targeting 1 For T cell CD3 antibody or CD122 antibody, targeting 2 is a tumor cell HER2 inhibitor, which can promote the infiltration of T cells into the tumor microenvironment, enhance the anti-tumor effect, activate the immune TLR7 receptor, and generate targeted immune memory. .
  • Small molecule immuno-agonists (exemplified by SZU-166, which is a unique isocyanate small molecule immunoagonist with the advantage of mild quantitative coupling addition with amino compounds).
  • SZU-115 and SZU-160 are novel small molecule immunoagonists with click reactive groups. Their functions basically include two points. 1) After coupling with macromolecules and biologically active substances, the click reaction is followed by a coloring indication. The agent optically traces the coupled product, for example, after coupling the protein or after targeting the drug, observing the cellular absorption and distribution of the protein or the targeted drug.
  • SZU-115 can also connect antibodies and targeted drugs at the same time, reduce the off-target effect of antibodies, enhance targeted drug effects, and activate anti-tumor immunity:
  • Compound SZU-136 and compound SZU-160 have similar effects and application effects.
  • the SZU-139 in the present invention is produced by SZU-136 reacting with a ribose click:
  • miRNA21 small molecule immunoagonists coupled to small RNAs
  • miRNA21 plays an important role in tumorigenesis and development (Cell Death Dis.2018 Feb 13;9(2):219.doi :10.1038/s41419-017-0243-9; Proc Natl Acad Sci US A.2015 Jun 30;112(26):E3355-64.doi:10.1073/pnas.1504630112;Cancer Lett.2017 May 1;393:86- 93.doi:10.1016/j.canlet.2017.02.019; https://en.wikipedia.org/wiki/MIRN21 ), the use of small molecule immuno-agonists to conjugate disease-causing miRNAs can guide the immune system to cut off the source of the disease , blocking changes in related proteins and the occurrence of related diseases.
  • the alkynyl immuno agonist can be replaced by SZU-115.
  • the carboxyl group of SZU-115 can be coupled with Argonaute to form a complex, interfere with the formation of miRNA and Argonaute complex, and lead to immune cell endosomes under the action of TLR7 agonist, resulting in Immune elimination and memory:
  • miRNAs produced by the human body especially miRNAs released by tumor cells, generally have no immune-inducing ability, and exogenous antisense oligonucleotide RNA
  • the target miRNA can be specifically recognized, it is mostly immunogenic and is eliminated, or is rapidly degraded in the body.
  • the above method can be used to form pathogenic autologous miRNAs into immunogenic miRNAs that are recognized by natural immunity. The same method is equally applicable to other pathogenic miRNAs such as miRNA30c and the like.
  • the effect of tumors and other diseases confers dual function (bifunctional targeting drugs) of the targeted drug, which is enhanced by immunological anti-tumor factors (such as IFN- ⁇ ) and pathogenic targeting sites.
  • immunological anti-tumor factors such as IFN- ⁇
  • pathogenic targeting sites The inhibition of the two functions is synergistic.
  • the present invention relates to a novel highly effective targeted drug that combines functions into one.
  • a reasonable role of the immunotargeting compounds of the present invention is to eliminate pathogenic targets (proteins) by the immune pathway, as shown in FIG.
  • an immunotargeting compound formed by a small molecule immunoagonist coupled with a targeted drug can overcome drug resistance and improve therapeutic effect.
  • the acid-type small molecule immuno-agonist lysine-derived compounds SZU-104, SZU-105, SZU-112, and SZU-113 are amino acid derivatives having immunoagonist activity, and can be prepared as needed in the preparation of immune antigen polypeptides.
  • the site of insertion of the polypeptide (or antibody) is positioned to achieve the purpose of localization coupling:
  • SZU-161 and SZU-162 as small molecule immunoagonists for coupled protein drugs, have specific UV absorption peaks (342 nM), which can be used as a general method for determining the coupling degree of small molecule immunoagonist-conjugated protein drugs:
  • Determination method 1) Determine the light absorption intensity of SZU-161 at 342 nM at different concentrations, and make a standard curve of concentration and absorbance to obtain the concentration-absorbance relationship; 2) Determine the coupled protein after coupling protein The absorbance at 342 nM at the concentration can be obtained by substituting the relationship to obtain the relative concentration of SZU-161 in the conjugate.
  • SZU-162 has the same application effect.
  • immunocytokines represent Cytokine (including IFN- ⁇ , IL-12, IL-6, TNF- ⁇ , etc.), and their concentration can be used to indicate the level of activation of immune cells by the compound.
  • FIG 1 shows the immunocytokine (IL-6) activation effect of the SZU-GSH series of compounds.
  • Figure 2 shows the distribution of fluorescently labeled SZU-116 in cells.
  • FIG. 3 shows the immunocytokine (IFN- ⁇ ) activation effects of SZU-102, 103, 106, 107, 108, 110, 111, 114, 115, 116, 117, 118.
  • SZU-101 and R848 are standard controls, which are internationally recognized standard immunosuppressive small molecule immunoagonists, the same below.
  • FIG. 4 shows the immunocytokine (IFN- ⁇ ) activation effects of SZU-143, 144, 146, 147, 149. Where con is the PBS blank control, the same below.
  • Figure 5 shows the immunocytokine (IL-12) activation effects of SZU-143, 144, 146, 147, 149.
  • Figure 6 shows the immunocytokine (TNF- ⁇ ) activation effect of SZU-143, 144, 146, 147, 149.
  • Figure 7 shows the immunocytokine (IL-6) activation effects of SZU-143, 144, 146, 147, 149.
  • Figure 8 shows the immunocytokine (IFN- ⁇ ) activation effects of SZU-145, 158, 104, 109, 112, 124.
  • Figure 9 shows the immunocytokine (IL-12) activation effects of SZU-145, 158, 104, 109, 112, 124.
  • Figure 10 shows the immunocytokine (TNF- ⁇ ) activation effects of SZU-145, 158, 104, 109, 112, 124.
  • Figure 11 shows the immunocytokine (IL-6) activation effects of SZU-145, 158, 104, 109, 112, 124.
  • Figure 12 shows the effect of each immunocytokine activation of SZU-125.
  • FIG. 13 shows the immunocytokine (IFN- ⁇ ) activation effect of SZU-105.
  • FIG. 14 shows the immunocytokine (IL-12) activation effect of SZU-105.
  • FIG. 15 shows the immunocytokine (IFN- ⁇ ) activation effect of SZU-113.
  • FIG 16 shows the immunocytokine (IL-12) activation effect of SZU-113.
  • FIG 17 shows the immunocytokine (IL-12) activation effect of SZU-119.
  • FIG. 18 shows the immunocytokine (IL-6) activation effect of SZU-119.
  • FIG 19 shows the immunocytokine (IFN- ⁇ ) activation effect of SZU-120.
  • FIG. 20 shows the immunocytokine (IL-6) activation effect of SZU-120.
  • 21 to 54 show the respective immunocytokine activation effects of the small molecule immunoagonists SZU-122 and 127-142 of the present invention, respectively.
  • Figure 55 shows the effect of SZU-102, 119, 125, 146, 147, 169, 174, 175, 168, 176, 177, 179 activating immune cells to produce IFN- ⁇ .
  • Figure 56 shows the effect of SZU-102, 119, 125, 146, 147, 169, 174, 175, 168, 176, 177, 179 activating immune cells to produce IL-12.
  • Figure 57 shows the in vivo anti-tumor (CT26) activity of novel immunotargeting compounds: Veh (not administered control), A (SZU-177), B (SZU-175), C (SZU-174), D ( SZU-147), E (SZU-176).
  • CT26 in vivo anti-tumor
  • Figure 58 shows in vivo anti-tumor (B16) activity effects of novel immunotargeting compounds: Veh (unadministered control), G (PD-L1 antibody), H (SZU-178), I (SZU-158-PD- L1), J (SZU-158-OX40), K (PD-1 antibody), L (SZU-158-PD-1).
  • Figure 59 shows that JQ1 inhibits TLR7 agonist activity of SZU-101; SZU-119 retains the immunocytokine eliciting activity of TLR7 agonists.
  • Figure 60 shows that JQ1 inhibits TLR7 agonist activity of SZU-101; SZU-119 retains the immunocytokine eliciting activity of TLR7 agonists.
  • Figure 61 shows that SZU-119 retains CD274 (PD-L1) inhibitory activity of JQ1 on B16 cells.
  • the "control” refers to a blank control.
  • Figure 62 shows the effect of SZU-163 and SZU-166 activating immune cells to produce IFN- ⁇ .
  • Figure 63 shows the effect of SZU-180 and SZU-136-miRNA21 activating immune cells to produce IFN- ⁇ .
  • Figure 64 shows the anti-tumor (4T1) survival effect of PD-1 antibody, PD-L1 antibody, OX40 antibody and their SZU-158 conjugate, and SZU-178.
  • Figure 65 shows the effect of PD-1 antibody, PD-L1 antibody, OX40 antibody and their SZU-158 conjugate and SZU-178 activating immune cells to produce IFN- ⁇ .
  • Figure 66 shows the effect of SZU-181 activating immune cells to produce IFN- ⁇ .
  • Figure 67 shows the effect of SZU-106, SZU-158, and SZU-160 activating immune cells to produce IFN- ⁇ , wherein the "control" is a PBS blank control.
  • Figure 68 shows the effect of SZU-106, SZU-158, and SZU-160 activating immune cells to produce IL-6, wherein "control" is a blank control.
  • Figure 69 is a graphical representation of the effect of TLR7 small molecule immunoagonists and human autologous miRNAs coupled to immunologically target interfering with agonist proteins to eliminate their associated pathogenic effects.
  • Fig. 70 is a view showing the action of the immunotargeting compound in the present invention for removing a pathogenic target (protein) by an immunological route.
  • the synthesis method of the compound of the present invention is exemplified as follows.
  • the synthesis method exemplified may enlighten a person skilled in the art to carry out the synthesis of the novel compound of the present invention, but the synthesis of the novel compound in the present invention is not limited to the exemplified synthesis method.
  • the SZU-030T obtained in the previous step was dissolved in 10 mL of anhydrous tetrahydrofuran (THF), and 484 mg of triphenylphosphine was added thereto under ice-cooling, and the mixture was stirred at room temperature overnight, and the reaction was monitored by LC-MS. After completion of the reaction, 20 mL of water was added, stirring was continued for 30 min, filtered under reduced pressure, washed twice with water and dried to yield s.
  • THF anhydrous tetrahydrofuran
  • the preparation method was the same as that of SZU-116 except that the SZU-017T was replaced by FITC to obtain a grass green semi-solid.
  • the preparation method is the same as SZU-103-GSH except that SZU-138 is used instead of SZU-103, and glutathione is replaced by 2-dimethylaminoethanethiol to obtain a white solid.
  • ESI-MS: m/z 562.2 [M +H] + .
  • the same method can be used to prepare SZU-159, except that SZU138 is replaced by SZU-144 and 2-dimethylaminoethanethiol at room temperature for 24 hours to obtain SZU-159.
  • Bromine was slowly added dropwise to the acetic acid solution of SZU-151. After stirring overnight, neutralized with NaHCO 3 and the reaction liquid. To the obtained viscous compound, a little ethanol is added. The remaining bromine was removed by adding a sodium thiosulfate solution. After suction filtration and drying of the obtained solid, a 10% NaOH solution was added, filtered again, and dried under reduced pressure. Purification by preparative liquid chromatography gave bromide.
  • SZU-134 was dissolved in DMSO, equimolar NHS and EDCI were added, and after stirring for 10 minutes, equimolar amount of direct purple N (OX40 agonist) was added. The reaction was sealed at room temperature for 3 days. The reactant was added with 20 times of water, and the precipitated solid was filtered, stirred with 2N NaOH and 10 ° C for 30 minutes, filtered, and the filtrate was acidified to pH 1 with 2N hydrochloric acid to precipitate solid product SZU-169, yield 52%, MS (ESI) : m/z: [M+2Na] 1616.64.
  • the a reactant was dissolved in a small amount of DMF, and a single equivalent of sodium azide was added thereto, and the reaction was stirred at room temperature for 24 hours. 10 times by volume of water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The solvent was distilled off under reduced pressure to give the product b in a yield of 90%.
  • Afatinib 100 mg and 50 mg b were dissolved in 15 mL of DMF, and a trace amount of NaI was added thereto, and reacted at 60 ° C for 24 hours; 100 mL of n-butanol was added to the reaction mixture, and the mixture was distilled under reduced pressure for at least a volume (about 5 mL). After cooling to room temperature, 50 mL of ethyl acetate was added to give a solid product c, which was dried in vacuo to give EtOAc (EtOAc): m.
  • EtOAc EtOAc
  • SZU-158 5 mg was taken, dissolved in 0.5 mL of DMSO, equimolar NHS and EDCI were added, and stirred at room temperature for 4 hours.
  • the mixed reaction solution was filtered through a filter to obtain a SZU-158-PD-1 coupling product, which was lyophilized to give a white solid SZU-158-PD-1, 18 mg.
  • the immunocytokine activity of SZU-158-PD-1 is shown in Figures 58 and 65, and the antibody functions are shown in Figures 58, 64 and 65).
  • SZU-158 5 mg was taken, dissolved in 0.5 mL of DMSO, equimolar NHS and EDCI were added, and stirred at room temperature for 4 hours.
  • the mixed reaction solution was filtered through a filter to obtain a SZU-158-PD-L1 coupling product, which was lyophilized to give a white solid SZU-158-PD-L1, 15 mg.
  • the immunocytokine activity of SZU-158-PD-L1 is shown in Figures 58 and 65, and the antibody functions are shown in Figures 58, 64 and 65).
  • the new immunotargeting compound formed by the SZU-158 conjugated antibody can form a salt due to the dimethylamino group to form a salted positive charge, which is beneficial to improve the therapeutic effect and water solubility.
  • Vemu-1 is a precursor of Vemurafenib and is available from WuXi PharmaTech.
  • Vemu-1 Dissolve Vemu-1 in DMF, add 2 times mole of triethylamine, cool to 0 ° C, add 1 time mole of vinylsulfonyl chloride, stir the mixture slowly to room temperature for 8 hours, add 10 times volume of ice water to the mixture. Stir well for 1 hour, adjust the pH to 8 with saturated Na 2 CO 3 , precipitate a solid, filter, wash twice with water, and dry to give Vemu-2.
  • 1 g of Vemu-2 was dissolved in 30 mL of DMF, 0.33 g of mercaptoethylamine was added, and the mixture was stirred at room temperature for 12 hours. The solvent was distilled off under reduced pressure to give crude EtOAc (EtOAc). Product: 0.98 g, yield 85%, MS (ESI): m/z: [M+1] 552.04.
  • the Osimertinib intermediate was purchased from WuXi PharmaTech.
  • SZU-160 3.5 mg was taken, dissolved in 0.5 mL of DMSO, equimolar NHS and EDCI were added, and stirred at room temperature for 4 hours.
  • the mixed reaction solution was filtered through a filter to obtain a SZU-160-PD-L1 antibody coupling product solution; 2.5 mg of Erlotinib, 2 mg of sodium ascorbate and 2 mg of copper sulfate were added, and the mixture was stirred at room temperature for 12 hours, and the reaction solution was filtered.
  • the membrane was filtered and lyophilized to obtain a white solid SZU-178 (i.e., SZU-178 coupled with the complex of erlotinib and PD-L1 antibody SZU-160-Erlotinib-PD-L1), 12 mg.
  • SZU-115-PD-L1-targeted drug ie complex formed by SZU-115 coupled PD-L1 antibody and targeting drug
  • the method of coupling the PD-L1 antibody was the same as in the preparation of SZU-178, and the click reaction method was the same as in the preparation of SZU-179, and SZU-180 was obtained.
  • the resulting product can be used to treat AIDS.
  • lymphocyte separation solution containing mouse lymphocyte separation solution, and filtered through a 0.22 ⁇ m filter to obtain a cell suspension. Lymphocytes were obtained by centrifugation. The removed lymphocytes were placed in a 15 mL centrifuge tube and 10 mL of 1640 complete medium was added and mixed. Centrifuge at 250 g for 10 min and discard the supernatant.
  • Spleen lymphocytes inoculated in 24-well plates were stimulated with different concentrations of the SZU series of small molecule immunoagonists and novel immunotargeting compounds of the invention, and the 24-well plates were transferred to the incubator, and the supernatant was gently aspirated after 24 hours. Samples tested for Elisa. Concentrations and concentration gradients are determined by the needs of each assay sample.
  • Blocking 200 ⁇ l of the diluted blocking solution was added to each well, sealed with plastic wrap, and sealed at room temperature for one hour. The plate was washed three times with PBST and patted dry.
  • the supernatant samples obtained by stimulating the spleen lymphocytes with different concentrations of the drug were added to the corresponding wells, and three replicate wells were set for each sample, and blank control wells and negative control wells were additionally set and labeled accordingly.
  • the 96-well microtiter plate with the standard and sample was sealed with plastic wrap and incubated for 2 hours at room temperature or overnight at 4 °C. The liquid in the plate was aspirated, and the plate was washed three times with PBST and patted dry.
  • the detection antibody was diluted to the desired concentration with a dilution buffer, 100 ⁇ l was added to each well, and incubated for 1 hour at room temperature. The liquid in the plate was aspirated, washed five times with PBST, and patted dry.
  • TMB 3,3',5,5'-tetramethylbenzidine
  • Termination After the color development was completed, 50 ⁇ l of the stop solution was added to each well, and the stop solution was 1 mol/L H 2 SO 4 .
  • Detection The 96-well microtiter plate after termination was placed in a full-wavelength microplate reader, and the absorbance value was read at a wavelength of 450 nm. Export the data, make a standard curve with software, and derive a linear regression equation. The concentration of immune cells (INF- ⁇ , IL-6, etc.) produced by the immune cells was calculated. Please refer to the attached figure for the specific experimental results.
  • PBS blank controls, immuno agonists or novel immunotargeting compounds were administered separately.
  • the dose to be administered is determined according to actual needs (effective, safe dose principle), and each substance is dissolved in a suitable solvent, each dose is 100 ⁇ L; each group is administered intraperitoneally.
  • Each group was administered on the 7th, 15th, 22nd, and 29th day after the tumor was implanted; and the tumor size was periodically measured. Mice were euthanized when the tumor reached 1500 mm 3 or greater than 15% of body weight. Tumor suppression and survival results are shown in Figures 57, 58 and 64. It can be seen that the novel immunotargeting compound treatment group of the present invention has a markedly enhanced antitumor effect.
  • the biological activity test methods of the novel small molecule immunoagonists and novel immunotargeting compounds of the present invention are not limited to the above test methods, and other related known or recognized activity test methods can also be used.
  • the related activity diagrams in the present invention are not limited to the one illustrated method, and the illustrated method can enlighten those skilled in the art to realize the application effects of the novel small molecule immunoagonists and novel immunotargeting compounds in the present invention. .

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Abstract

提供一系列为同系物的小分子免疫激动剂以及它们与靶向药偶联得到的新的具有靶向作用及免疫激活功能的双功能免疫靶向化合物。所得免疫靶向化合物有利于提高靶向药的免疫激活效果和抗肿瘤及其它疾病的效果,这种提高的效果是由具有免疫抗肿瘤因素(如IFN-γ)和对致病性靶向位点的抑制二个功能协同作用产生。

Description

新型小分子免疫激动剂和免疫靶向化合物及其应用 技术领域
本发明涉及一系列为同系物的小分子免疫激动剂以及它们与靶向药偶联得到的免疫靶向化合物及其应用,属于药物化学和免疫学的交叉学科领域。
背景技术
Toll样受体(TLR)是生物体防御体系的第一道防线(Kaisho,T.&Akira,S.Toll-like receptor function and signaling.J.Allergy Clin.Immunol.117,979–987(2006);Miyake,K.Innate immune sensing of pathogens and danger signals by cell surface Toll-like receptors.Semin.Immunol.19,3–10(2007))。其中TLR7的激活天然配体是ssRNA,在ssRNA系列病毒侵袭的防御中具有重要作用(Blasius,A.L.&Beutler,B.Intracellular toll-like receptors.Immunity 32,305–315(2010))。此外,TLR7能够被人工合成的小分子化合物激活,诱导机体的免疫调节,在抗病毒和抗肿瘤方面具有重要作用(Huju Chi,Chunman Li,Flora Sha Zhao,Li Zhang,Tzi Bun Ng,Guangyi Jin and Ou Sha.Anti-tumor Activity of Toll-Like Receptor 7 Agonists.Front Pharmacol.2017 May 31;8:304.doi:10.3389/fphar.2017.00304)。
以TKI(tyrosine kinase inhibitor,络氨酸激酶抑制剂)为代表的抗肿瘤靶向药延长了患者的生命,但是大部分在一年左右或更短时间内产生耐药性。为了解决TKI的耐药性,我们在前期研究中探索将TKI和TLR7免疫激动剂联合应用,以期产生靶向免疫协同作用。然而实验结果显示TKI拮抗了TLR7激动剂的免疫细胞激活作用,抑制了免疫激活细胞因子的产生(Scientific Reports,2016 Dec 21;6:39598.doi:10.1038/srep39598)。
发明内容
本发明的目的一方面在于提供一系列具有免疫激活作用的小分子免疫激动剂及其应用,另一方面在于提供由上述小分子免疫激动剂与靶向药偶联得到的免疫靶向化合物及其应用。
本发明第一方面涉及式(I)的小分子免疫激动剂或其异构体或药学上可接受的盐:
Figure PCTCN2019080945-appb-000001
其中
A 1表示O或C;
A 2表示硝基、氨基、异氰酸酯基、亚烷基氨基、亚烷基异氰酸酯基或选自式(II)或式(III)的基团:
Figure PCTCN2019080945-appb-000002
其中
R 1和R 2各自独立地表示(CH 2) p(NH) q,其中p为0、1或2,q为0、1或2;
R 3表示O或S;
R 4表示(CH 2) x(C=O) y(NH) z[(CH 2) 2O] r(CH 2) s(C=C) t,其中x为0至5的整数,y为0、1或2,z为0、1或2,r为0、1、2或3,s为0至5的整数且t为0、1或2,其中当s≠0且t=0时,(CH 2) s中靠近羰基的碳原子可以被选自以下的基团取代:-NHBoc、氨基、-NHFmoc、
Figure PCTCN2019080945-appb-000003
或与另一碳原子形成双键;
R 5表示羟基、烷氧基、羟胺基、乙烯基或选自以下的基团:
Figure PCTCN2019080945-appb-000004
R 6表示烷基或选自以下的基团:
Figure PCTCN2019080945-appb-000005
Figure PCTCN2019080945-appb-000006
其中*表示连接至碳原子的位点;
其中排除选自以下的化合物:
Figure PCTCN2019080945-appb-000007
优选地,所述异构体为同分异构体或对映异构体。
在优选的实施方案中,本发明涉及式(I)的小分子免疫激动剂或其异构体或药学上可接受的盐:
Figure PCTCN2019080945-appb-000008
其中
A 1表示O或C;
A 2表示硝基、氨基、异氰酸酯基、C 1-C 6亚烷基氨基、C 1-C 6亚烷基异氰酸酯基或选自式(II)或式(III)的基团:
Figure PCTCN2019080945-appb-000009
其中
R 1和R 2各自独立地表示(CH 2) p(NH) q,其中p为0或1,q为0或1;
R 3表示O或S;
R 4表示(CH 2) x(C=O) y(NH) z[(CH 2) 2O] r(CH 2) s(C=C) t,其中x为0至5的整数,y为0或1,z为0或1,r为0、1、2或3,s为0至5的整数且t为0或1,其中当s≠0且t=0时,(CH 2) s中靠近羰基的碳原子可以被选自以下的基团取代:-NHBoc、氨基、-NHFmoc、
Figure PCTCN2019080945-appb-000010
或与另一碳原子形成双键;
R 5表示羟基、C 1-C 6烷氧基、羟胺基、乙烯基或选自以下的基团:
Figure PCTCN2019080945-appb-000011
R 6表示C 1-C 6烷基或选自以下的基团:
Figure PCTCN2019080945-appb-000012
Figure PCTCN2019080945-appb-000013
其中*表示连接至碳原子的位点;
其中排除选自以下的化合物:
Figure PCTCN2019080945-appb-000014
在进一步优选的实施方案中,本发明涉及式(I)的小分子免疫激动剂或其异构体或药学上可接受的盐:
Figure PCTCN2019080945-appb-000015
其中
A 1表示O或C;
A 2表示硝基、氨基、异氰酸酯基、亚甲基氨基、亚甲基异氰酸酯基或选自式(II)或式(III)的基团:
Figure PCTCN2019080945-appb-000016
其中
R 1和R 2各自独立地表示(CH 2) p(NH) q,其中p为0或1,q为0或1;
R 3表示O或S;
R 4表示(CH 2) x(C=O) y(NH) z[(CH 2) 2O] r(CH 2) s(C=C) t,其中x为0至5的整数,y为0或1,z为0或1,r为0、1、2或3,s为0至5的整数且t为0或1,其中当 s≠0且t=0时,(CH 2) s中靠近羰基的碳原子可以被选自以下的基团取代:-NHBoc、氨基、-NHFmoc、
Figure PCTCN2019080945-appb-000017
或与另一碳原子形成双键;
R 5表示羟基、甲氧基、羟胺基、乙烯基或选自以下的基团:
Figure PCTCN2019080945-appb-000018
R 6表示甲基或选自以下的基团:
Figure PCTCN2019080945-appb-000019
Figure PCTCN2019080945-appb-000020
其中*表示连接至碳原子的位点;
其中排除选自以下的化合物:
Figure PCTCN2019080945-appb-000021
在优选的实施方案中,本发明涉及式(I)的小分子免疫激动剂,或其异构体或药学上可接受的盐,其为选自以下的SZU系列化合物(具体结构式见下表1)或其药学上可接受的盐:SZU-104、SZU-105、SZU-107、SZU-108、SZU-109、SZU-110、SZU-111、SZU-112、SZU-113、SZU-115、SZU-118、SZU-120、SZU-127、SZU-128、 SZU-129、SZU-131、SZU-132、SZU-133、SZU-134、SZU-135、SZU-136、SZU-137、SZU-138、SZU-139、SZU-140、SZU-142、SZU-143、SZU-144、SZU-145、SZU-149、SZU-158、SZU-159、SZU-160、SZU-161、SZU-162、SZU-163、SZU-166或SZU-171。
本发明第二方面涉及免疫靶向化合物或其药学上可接受的盐,其由小分子免疫激动剂或其与含巯基的多肽如谷胱甘肽形成的加成产物与靶向药或抗体共价偶联形成,其通式表示如下:
(TLA) n-L-(Tar) m
其中TLA表示小分子免疫激动剂或其与含巯基的多肽如谷胱甘肽形成的加成产物;Tar表示靶向药或抗体;n和m各自独立地表示1至5之间的数值;L代表连接链,其为直链或支链烷烃或者聚乙二醇链,L的两端直接与TLA和/或Tar共价连接或通过其他基团与TLA和/或Tar共价连接。
在优选的实施方案中,其中所述小分子免疫激动剂包括本发明第一方面所述的小分子免疫激动剂以及选自以下的化合物:
Figure PCTCN2019080945-appb-000022
在优选的实施方案中,其中所述小分子免疫激动剂为选自以下的SZU系列化合物(具体结构式见下表1)或其药学上可接受的盐:SZU-102、SZU-104、SZU-105、SZU-106、SZU-107、SZU-108、SZU-109、SZU-110、SZU-111、SZU-112、SZU-113、SZU-115、SZU-118、SZU-120、SZU-127、SZU-128、SZU-129、SZU-131、SZU-132、SZU-133、SZU-134、SZU-135、SZU-136、SZU-137、SZU-138、SZU-139、SZU-140、SZU-142、SZU-143、SZU-144、SZU-145、SZU-149、SZU-158、SZU-159、SZU-160、SZU-161、SZU-162、SZU-163、SZU-166、SZU-171、SZU-101、SZU-103、SZU-114、SZU-117、SZU-122或SZU-130。
在优选的实施方案中,其中所述TLA为选自以下的化合物(具体结构式见下表3):SZU-103-GSH、SZU-114-GSH、SZU-117-GSH、SZU-122-GSH、SZU-127-GSH、SZU-133-GSH、SZU-138-GSH或SZU-144-GSH。
在优选的实施方案中,其中所述Tar选自以下的至少一种:Dasatinib,Imatinib,Saracatinib,Ponatinib,Nilotinib,Danusertib,AT9283Degrasyn,Bafetinib,kw-2449,nyp-bhg712,dcc-2036,GZD824.,GNF-2,PD173955,GNF-5,Bosutinib,Gefitinib,Erlotinib,Sunitinib,Ruxolitinib,Tofacitinib,Lapatinib,Vandetanib,Sorafenib,Sunitinib,Axitinib,Nintedanib,Regorafenib,Pazopanib,Lenvatinib,Crizotinib,Ceritinib,Cabozantinib,DWF,Afatinib,Ibrutinib,Niraparib,Palbociclib,B43,KU004,Foreinib,KRCA-0008,PF-06439015,PF-06463922,Canerlinib,GSA-10,GW2974,GW583340,W24002,CP-380736,D2667,Mubritinib,PD153035,PD168393,Pelitinib,PF-06459988,PF06672131,PF-6422899,PKI166,ReveromycinA,Tyrphostin 1,tyrphostin23,lyrphostin51,Tyrphostin,AG528,Tyrphostin,AG658,Tyrphostin,AG825,Tyrphostin,AG835,Tyrphostin,AG1478,Tyrphostin,RG13022,Tyrphostin,RG14620,B178,GSK1838705A,PD-161570,PD173074,SU-5402,Roslin2,Picropodophyllotoxin,PQ401,i-ome-tyrphostin,AG538,GNF5837,GW441756,Tyrphostin,AG879,DMPQ,jnj-10198409,PLX647,Trapidil,TyrphostinA9,Tyrhostin,AG370,Lestaurtinib,DMH4,Eldanamvcin,Genistein,Gw2580,HerbimycinA,Lavendustin,CMidostaurin,nvp-bhg712,PD158780,pd-166866,pf-0627334,PP2,RPL,SU11274,SU5614,Symadex,Tyrphostin,AG34,Tyrphostin,AG974,Tyrphostin,AG1007,UNC2881,Honokiol,SU1498,SKLB1002,cp-547632,jk-p3,KRN633,sc-1,ST638,SU 5416,Sulochrin,Tyrphostin,SU1498,rociletinib,Dacomitinib,Tivantinib,Neratinib,Masitinib,Vatalanib,Icotinib,xl-184,osi-930,AB1010,Quizartinib,AZD9291,Tandutinib,HM61713,Brigantinib,Vemurafenib(plx-4032),Semaxanib,AZD2171,Crenolanib,Damnacanthal,Fostamatinib,Motesanib,Radotinib,osi-027,Linsitinib,BIX02189,PF-431396,PND-1186,PF-03814735,PF-431396,sirollmus,temsirolimus,everolimus,deforolimus,Zotarolimus,BEZ235,INK128,Omipalisib,AZD8055,MHY1485,PI-103,KU-0063794,ETP-46464,GDC0349,XL388,WYE-354,WYE-132,GiSK1059615,WAY-600,PF-04691502,wYE-687,PP121,BGT226,AZD2o014,PP242,CH5132799,P529,GDC0980,GDC-0994,XMD82,Ulixertinib,FR180204,SCH772984,Trametinib,PD184352,PD98059,Selumetinib,PD325901, U0126,Pimasertinib,tak-733,AZD8330,Binimetinib,PD318088,SL-327,Refametinib,gdc-0623,Cobimetinib,b1-847325,Adaphostin,GNF2,PPYA,aim-100,ASP 3026,LFM,Toceranib,JQ1,Niraparib,Fuzuopali,palbociclib,ARS-853,ARS-1620,Chlorazol-violet N(直接紫N),miRNA-21,PreS,Zidovudine,Lenvatinib,LY-364947,ARS-1620或Reparixin,EGFR抑制剂,TKI,BRD4抑制剂,KRAS通路相关靶点抑制剂,BRAF抑制剂,BTK抑制剂,PARP抑制剂,PD-L1抑制剂(包括抗体、小分子),PD-1抑制剂(包括抗体、小分子),OX40激动剂(包括抗体、小分子),CD122抗体,CD3抗体,CD19抑制剂,CD20抑制剂,MUC1抑制剂,MUC16抑制剂,CDK4/6抑制剂,TGF-β抑制剂,CXCR抑制剂,CCL和CXCL趋化因子抑制剂以及miRNA。
在进一步优选的实施方案中,其中所述Tar选自如下的至少一种:TKI、EGFR抑制剂、KRAS抑制剂、BRAF抑制剂、BTK抑制剂、BRD4抑制剂、PD-L1抑制剂、PD-1抑制剂、OX40激动剂、PARP抑制剂或CDK4/6抑制剂。
在优选的实施方案中,其中L为
Figure PCTCN2019080945-appb-000023
在优选的实施方案中,其中所述其他基团包括酰胺、烷氧键、烷硫键、取代胺基、季胺盐、cilck反应形成的杂环、可用蛋白酶解离的氨基酸基团、脲基团或硫脲基团。
在优选的实施方案中,所述免疫靶向化合物或其药学上可接受的盐为选自以下的SZU系列化合物(具体结构式见下表4)或其药学上可接受的盐:SZU-116、SZU-119、SZU-124、SZU-125、SZU-146、SZU-147、SZU-168、SZU-169、SZU-174、SZU-175、SZU-176、SZU-177、SZU-178、SZU-179、SZU-180、SZU-181、SZU-158-PD-L1、SZU-158-OX40、SZU-158-PD-1或SZU-136-miRNA21。
本发明第三方面涉及本发明第一方面所述的式(I)的小分子免疫激动剂或其异构体或药学上可接受的盐,化合物SZU-101、SZU-103、SZU-114、SZU-117、SZU-122和SZU-130(具体结构式见下表2)以及本发明第二方面所述的免疫靶向化合物或其药学上可接受的盐在制备参与免疫调节的药物中的用途。
本发明第四方面涉及本发明第一方面所述的式(I)的小分子免疫激动剂或其异 构体或药学上可接受的盐,化合物SZU-101、SZU-103、SZU-114、SZU-117、SZU-122和SZU-130以及本发明第二方面所述的免疫靶向化合物或其药学上可接受的盐在制备抗肿瘤药物、抗病毒药物和靶向清除蛋白的药物中的用途。
本发明还涉及化合物SZU-136-miRNA21及其类似物在制备免疫靶向RNA的药物中的用途。其中化合物SZU-136-miRNA21及其类似物作为免疫靶向的小分子RNA。所述药物可以为各种剂型,包括固体制剂、液体制剂、药物与各种载体形成的复合物或药物的结晶水复合物。
本发明还涉及化合物SZU-179、SZU-180和SZU-181在制备抗艾滋病和抗乙肝的药物中的用途。其中化合物SZU-179、SZU-180和SZU-181作为抗病毒免疫靶向化合物。
本发明还涉及化合物SZU-161和SZU-162在测定小分子免疫激动剂偶联蛋白药物和细胞的偶联度中的用途。其中化合物SZU-161和SZU-162作为具有特异紫外吸收的小分子免疫激动剂。
本发明还涉及化合物SZU-116和SZU-124在观察研究蛋白或靶向药的细胞吸收和体内分布中的用途,其中化合物SZU-116和SZU-124与蛋白或者靶向药偶联。化合物SZU-116和SZU-124作为具有小分子免疫激动剂发色指示剂的光学示踪特性的化合物,与蛋白或者靶向药偶联后可以实时显示蛋白或者靶向药的细胞吸收和体内分布。
本发明还涉及化合物SZU-114、SZU-117、SZU-122、SZU-127、SZU-133、SZU-138、SZU-143在制备具有免疫靶向双功能的药物中的用途,其中化合物SZU-114、SZU-117、SZU-122、SZU-127、SZU-133、SZU-138、SZU-143与靶向药或抗体偶联。
本领域技术人员意外地发现,本发明的小分子免疫激动剂本身具有免疫激活作用。另外,本领域技术人员已知将TKI和TLR7免疫激动剂联合应用会导致TKI拮抗TLR7激动剂的免疫细胞激活作用,抑制免疫激活细胞因子的产生。但是发明人将TKI靶向药和TLR7小分子免疫激动剂共价化合偶联后,意外发现这类共价偶联化合物不但保持或提高了小分子免疫激动剂的免疫激活作用,而且也提高了靶向药的抗肿瘤效果。通过本发明的方法得到的这种免疫靶向化合物对于肿瘤的长期高效治疗具有重要意义。
上述具有免疫激活作用并且可以与靶向药偶联形成具有靶向作用的免疫靶向化合物的新型小分子免疫激动剂如下表1所示:
表1
Figure PCTCN2019080945-appb-000024
Figure PCTCN2019080945-appb-000025
Figure PCTCN2019080945-appb-000026
Figure PCTCN2019080945-appb-000027
Figure PCTCN2019080945-appb-000028
其他具有免疫激活作用并且可以与靶向药偶联形成具有靶向作用的免疫靶向化合物的其他小分子免疫激动剂如下表2所示:
表2
Figure PCTCN2019080945-appb-000029
Figure PCTCN2019080945-appb-000030
其中,化合物SZU-103、SZU-114、SZU-117、SZU-122和SZU-130的结构式及其制备方法已公开于中国专利申请CN107281483A。化合物SZU-102和SZU-106的结构式及其制备方法已公开于中国专利申请CN106267188A,其中化合物SZU-102为其中的化合物1,化合物SZU-106为其中的化合物19。
其中表1和表2中的部分小分子免疫激动剂可与含巯基的多肽例如谷胱甘肽(glutathione,GSH)形成加成物,其能够靶向谷胱甘肽转移酶,协同化疗药物、不可逆TKI靶向药和其它不可逆靶向药来提高对疾病的治疗效果,消除耐药性,同时激活免疫效果。以SZU-117与谷胱甘肽反应形成SZU-117-GSH加成物为例,其合成过程如下式所示。举例说明的小分子免疫激动剂与GSH形成的加成物如表3所示:
Figure PCTCN2019080945-appb-000031
表3
Figure PCTCN2019080945-appb-000032
Figure PCTCN2019080945-appb-000033
其他含巯基的化合物包括例如2-甲胺乙硫醇和SZU-033T
Figure PCTCN2019080945-appb-000034
等。
表1和表2中的小分子免疫激动剂以及表3中的部分小分子免疫激动剂与GSH形成的化合物可以与靶向药偶联得到具有免疫靶向作用的双功能免疫靶向化合物,所得免疫靶向化合物如下表4所示:
表4
Figure PCTCN2019080945-appb-000035
Figure PCTCN2019080945-appb-000036
Figure PCTCN2019080945-appb-000037
Figure PCTCN2019080945-appb-000038
小分子免疫激动剂与靶向药偶联形成免疫靶向化合物的合成路线如下所示:
小分子免疫激动剂偶联靶向药合成路线之一:
Figure PCTCN2019080945-appb-000039
小分子免疫激动剂(以SZU-137为例)偶联靶向药合成路线之二:
Figure PCTCN2019080945-appb-000040
上述同样的方法也适用于由SZU-144或SZU-133与靶向药偶联形成免疫靶向化合物,linker也可以是简单的直链烷烃,也可以根据各种需要进行替换。
含羧基的小分子免疫激动剂(例如SZU-138)可以通过加成反应和偶联反应偶联抗体形成可溶性的功能蛋白多肽偶联体,其由于带有了二甲氨基基团可以成盐,形成离子化的正电荷,有利于提高治疗效果和水溶解性,从而解决偶联产物的溶解度问题。
另外,上述含羧基的小分子免疫激动剂也可以偶联2个不同的靶向药,形成双靶向免疫化合物。
小分子免疫激动剂(以SZU-171为例)偶联靶向药合成路线之三:
Figure PCTCN2019080945-appb-000041
由小分子免疫激动剂和谷胱甘肽形成的产物(以SZU-114-GSH为例),也可以偶联2个不同的靶向药,以提高疗效。
小分子免疫激动剂偶联靶向药合成路线之四:
Figure PCTCN2019080945-appb-000042
其中的靶向药可以是各种TKI药物以及各种肿瘤靶向药,也可以是抗体如CD3抗体、PD-1抗体、OX40抗体、CD19抗体、CD20抗体、HER2抗体、MUC1抗体以及各种肿瘤蛋白抗体和致病原的抗体等。其中的偶联链可以是各种烷烃链或者烷氧基链等,可以根据溶解和代谢优化需要进行调整。
上述双偶联免疫靶向化合物的优点是可以形成2个正离子氨基基团(氨基盐-HN +-、-NH + 3),溶解性高,双靶可以根据需要调整优化;比如靶向1为T细胞的CD3抗体或CD122抗体,靶向2为靶向肿瘤细胞HER2抑制剂,可以推动T细胞向肿瘤微环境的浸润,加强抗肿瘤效果的同时激活免疫TLR7受体,产生靶向免疫记忆。
小分子免疫激动剂(以SZU-166为例,其作为独特的异氰酸酯小分子免疫激动剂,具有和氨基化合物温和定量偶联加成的优势)偶联靶向药合成路线之五:
Figure PCTCN2019080945-appb-000043
SZU-115和SZU-160是具有click反应基团的新型小分子免疫激动剂,其功能基本包括二点,1)在与大分子和生物活性物质偶联后,利用click反应接上发色指示剂对偶联产物进行光学示踪,例如在偶联蛋白后或者靶向药后,观察蛋白或靶向药的细胞吸收和体内分布情况。
小分子免疫激动剂偶联靶向药合成路线之六:
Figure PCTCN2019080945-appb-000044
2)SZU-115也可以同时连接抗体和靶向药,减小抗体的脱靶效应,增强靶向药效,激活抗肿瘤免疫:
Figure PCTCN2019080945-appb-000045
化合物SZU-136和化合物SZU-160具有相似的作用和应用效果。
本发明中的SZU-139由SZU-136与核糖click反应生成:
Figure PCTCN2019080945-appb-000046
同样方法可以应用于小分子免疫激动剂偶联小分子RNA(miRNA),例如miRNA21(microRNA21)在肿瘤发生和发展中具有重要作用(Cell Death Dis.2018 Feb 13;9(2):219.doi:10.1038/s41419-017-0243-9;Proc Natl Acad Sci U S A.2015 Jun 30;112(26):E3355-64.doi:10.1073/pnas.1504630112;Cancer Lett.2017 May 1;393:86-93.doi:10.1016/j.canlet.2017.02.019; https://en.wikipedia.org/wiki/MIRN21),应用小分子免疫激动剂偶联致病的miRNA可以引导免疫系统切断疾病的发生源头,阻断相关蛋白的变化和相关疾病的发生。
小分子免疫激动剂偶联靶向药合成路线之七:
Figure PCTCN2019080945-appb-000047
叠氮化miRNA的合成可参考文献(Bioconjug Chem.2003 May-Jun; 14(3):697-701):
Figure PCTCN2019080945-appb-000048
炔基免疫激动剂可用SZU-115代替,SZU-115的羧基可以与Argonaute偶联成复合物,干扰miRNA和Argonaute复合物的形成,并在TLR7激动剂的作用下引导到免疫细胞内涵体,导致免疫消除和记忆:
Figure PCTCN2019080945-appb-000049
近期研究证实肿瘤外泌体释放致病性的miRNA是导致肿瘤耐药扩散的重要原因(Proc Natl Acad Sci U S A.2018 Feb 12.pii:201717363.doi:10.1073/pnas.1717363115;J Clin Invest.2016 Apr 1;126(4):1163-72.doi:10.1172/JCI81130);人体自身产生的miRNA,特别是肿瘤细胞释放的miRNA一般没有免疫诱导能力,外源的反义寡核苷酸RNA虽然可以特异识别目标miRNA,但是大都具有免疫原性而被清除,或者在体内极快的被降解。应用上述方法可将致病性自身miRNA形成天然免疫能够识别的免疫原性miRNA。相同的方法同样适用于其它的致病性miRNA如miRNA30c等。
miRNA的一个重要作用是引导相应的Argonaute蛋白到目标mRNA切割或者进行转录抑制(https://en.wikipedia.org/wiki/Argonaute)。因此TLR7免疫激动剂和人体自身miRNA偶联的创新作用之一是免疫靶向干扰Argonaute蛋白的结合,消除其有关的致病作用,该作用示意图请参见图69。综上所述,发明人发现系列小分子免疫激动剂偶联靶向药,形成新的具有免疫激活功能的免疫靶向化合物,在体外体内产生了有利于提高靶向药的免疫激活效果和抗肿瘤及其它疾病的效果,赋予了所述靶向药双功能(双功能靶向药),这种提高的效果是由具有免疫抗肿瘤因素 (如IFN-γ)和对致病性靶向位点的抑制二个功能协同作用产生,本发明涉及一种功能合二为一的新型高效靶向药。
本发明中所述免疫靶向化合物的一个合理作用是通过免疫途径清除病原性靶点(蛋白),如图70所示。小分子免疫激动剂偶联靶向药后形成的免疫靶向化合物,由靶向药引导至病原性蛋白,导致靶向细胞死亡,释放病原性蛋白,进而由免疫激动剂引导至抗原递呈细胞(如DC,antigen presenting cell),在细胞内对病原性蛋白进行切割处理,导致这些蛋白降解。本发明中小分子免疫激动剂偶联靶向药(如TKI等)形成的免疫靶向化合物,能够克服耐药性,提高治疗效果。
酸式系列的小分子免疫激动剂赖氨酸衍生化合物SZU-104、SZU-105、SZU-112、SZU-113为具有免疫激动剂活性的氨基酸衍生物,在制备免疫抗原多肽中,可以按照需要插入多肽(或抗体)的定点位置达到定位偶联的目的:
Figure PCTCN2019080945-appb-000050
SZU-161和SZU-162作为偶联蛋白药物的小分子免疫激动剂,具有特异性紫外吸收峰(342nM),可以作为测定小分子免疫激动剂偶联蛋白药物偶联度的通用方法:
Figure PCTCN2019080945-appb-000051
测定方法,1)在不同浓度下测定SZU-161在紫外342nM处的光吸收强度,作出浓度和吸光度的标准曲线,得出浓度-吸光度关系式;2)偶联蛋白后测定偶联蛋白在一定浓度下的342nM处的吸光度,代入关系式即可得出偶联物中SZU-161的相对浓度既得偶联度。SZU-162具有同样的应用效果。
附图说明
以下各图中提及的“免疫细胞因子”表示Cytokine(包括IFN-γ、IL-12、IL-6、TNF-α等),它们的浓度高低可以用于指示化合物激活免疫细胞效应的高低。
图1示出了SZU-GSH系列化合物的免疫细胞因子(IL-6)激活效果。
图2示出了荧光标记的SZU-116在细胞内的分布。
图3示出了SZU-102、103、106、107、108、110、111、114、115、116、117、118的免疫细胞因子(IFN-γ)激活效果。其中SZU-101和R848作为标准对照物,它们是国际公认的标准的具有免疫激活作用的小分子免疫激动剂,下同。
图4示出了SZU-143、144、146、147、149的免疫细胞因子(IFN-γ)激活效果。其中con为PBS空白对照,下同。
图5示出了SZU-143、144、146、147、149的免疫细胞因子(IL-12)激活效果。
图6示出了SZU-143、144、146、147、149的免疫细胞因子(TNF-α)激活效 果。
图7示出了SZU-143、144、146、147、149的免疫细胞因子(IL-6)激活效果。
图8示出了SZU-145、158、104、109、112、124的免疫细胞因子(IFN-γ)激活效果。
图9示出了SZU-145、158、104、109、112、124的免疫细胞因子(IL-12)激活效果。
图10示出了SZU-145、158、104、109、112、124的免疫细胞因子(TNF-α)激活效果。
图11示出了SZU-145、158、104、109、112、124的免疫细胞因子(IL-6)激活效果。
图12示出了SZU-125的各免疫细胞因子激活效果。
图13示出了SZU-105的免疫细胞因子(IFN-γ)激活效果。
图14示出了SZU-105的免疫细胞因子(IL-12)激活效果。
图15示出了SZU-113的免疫细胞因子(IFN-γ)激活效果。
图16示出了SZU-113的免疫细胞因子(IL-12)激活效果。
图17示出了SZU-119的免疫细胞因子(IL-12)激活效果。
图18示出了SZU-119的免疫细胞因子(IL-6)激活效果。
图19示出了SZU-120的免疫细胞因子(IFN-γ)激活效果。
图20示出了SZU-120的免疫细胞因子(IL-6)激活效果。
图21-图54分别示出了本发明中小分子免疫激动剂SZU-122、127-142的各免疫细胞因子激活效果。
图55示出了SZU-102、119、125、146、147、169、174、175、168、176、177、179激活免疫细胞产生IFN-γ的效果。
图56示出了SZU-102、119、125、146、147、169、174、175、168、176、177、179激活免疫细胞产生IL-12的效果。
图57示出了新型免疫靶向化合物体内抗肿瘤(CT26)活性效果:Veh(未给药对照),A(SZU-177),B(SZU-175),C(SZU-174),D(SZU-147),E(SZU-176)。
图58示出了新型免疫靶向化合物体内抗肿瘤(B16)活性效果:Veh(未给药对照),G(PD-L1抗体),H(SZU-178),I(SZU-158-PD-L1),J(SZU-158-OX40),K(PD-1抗体),L(SZU-158-PD-1)。
图59示出了JQ1抑制SZU-101的TLR7激动剂活性;SZU-119保持了TLR7激动剂的免疫细胞因子激发活性。
图60示出了JQ1抑制SZU-101的TLR7激动剂活性;SZU-119保持了TLR7激动剂的免疫细胞因子激发活性。
图61示出了SZU-119保持了JQ1对B16细胞的CD274(PD-L1)抑制活性。其中的“control”指的是空白对照。
图62示出了SZU-163和SZU-166激活免疫细胞产生IFN-γ的效果。
图63示出了SZU-180和SZU-136-miRNA21激活免疫细胞产生IFN-γ的效果。
图64示出了PD-1抗体、PD-L1抗体、OX40抗体和它们的SZU-158偶联物以及SZU-178的抗肿瘤(4T1)存活率效果。
图65示出了PD-1抗体、PD-L1抗体、OX40抗体和它们的SZU-158偶联物及SZU-178激活免疫细胞产生IFN-γ的效果。
图66示出了SZU-181激活免疫细胞产生IFN-γ的效果。
图67示出了SZU-106、SZU-158、SZU-160激活免疫细胞产生IFN-γ的效果,其中的“control”为PBS空白对照。
图68示出了SZU-106、SZU-158、SZU-160激活免疫细胞产生IL-6的效果,其中的“control”为空白对照。
图69示出了TLR7小分子免疫激动剂和人体自身miRNA偶联以免疫靶向干扰激动剂蛋白的结合,消除其有关的致病作用的作用示意图。
图70示出了本发明中免疫靶向化合物通过免疫途径清除病原性靶点(蛋白)的作用示意图。
具体实施方式
本发明有关的化合物的合成方法举例如下,举例的合成方法可以启示本领域技术人员实现本发明中新型化合物的合成,但是本发明中新型化合物的合成不局限于举例的合成方法。
制备实施例
SZU-112
Figure PCTCN2019080945-appb-000052
将1g SZU-101、311mg N-羟基琥珀酰亚胺(NHS)和518mg二氯乙烷(EDC)溶于12mL无水N,N-二甲基甲酰胺(DMF)中,在氮气保护条件下室温反应2h,TLC监测反应。反应结束后,将反应液倒入水中,析出沉淀,过滤干燥,得SZU-009T粗品,直接进行下一步反应。
将500mg SZU-009T与339mg Fmoc-D-赖氨酸溶于10mL无水DMF中,室温搅拌1h。反应完成后,加水析出固体,抽滤。经氯仿:甲醇=3:1柱层析分离,得白色固体576mg,产率78.9%,ESI-MS:m/z=795.3[M+H] +
SZU-107
Figure PCTCN2019080945-appb-000053
将1g SZU-101溶解在无水20倍重量的DMSO中,按照顺序加入等摩尔的1)、2)、3);反应物混合室温搅拌12小时,加入反应体积10倍体积的水,混合物离心沉淀,得到粗品沉淀产物。将此沉淀产物加入20毫升饱和碳酸钠水中,搅拌10分钟,过滤,滤液用浓盐酸调剂PH值为3,析出纯品SZU-107,真空干燥,收率65%。 ESI-MS:m/z=647.6865[M+H] +
SZU-113
Figure PCTCN2019080945-appb-000054
将50mg SZU-112溶于1mL二乙胺中,室温搅拌1h,TLC监测反应进程。反应完成后,减压除去二乙胺。加入1mL二氯甲烷洗涤,10,000rpm离心5min,移除上清,沉淀重复洗涤一次。减压干燥,得白色固体32mg,产率90%,ESI-MS:m/z=573.2[M+H] +
SZU-115
Figure PCTCN2019080945-appb-000055
将108mg SZU-009T溶于2mL无水DMF中,依次加入31mg SZU-013T和100μL N,N-二异丙基乙胺(DIEA),室温搅拌过夜,LC-MS监测反应进程。反应结束后,经制备型液相色谱分离,得白色固体65mg,产率56%,ESI-MS:m/z=582.2[M+H] +
SZU-116
Figure PCTCN2019080945-appb-000056
将264mg SZU-017T、324mg HBTU和119mg 1-羟基苯并三唑(HOBt)溶于 5mL无水DMF中,滴加256μL DIEA,室温搅拌10min。加入5mL SZU-020T(230mg)的无水DMF溶液后,室温搅拌过夜。将反应液倒入100mL 5%HCl中,用30mL二氯甲烷萃取3次,合并有机层,分别用饱和碳酸氢钠溶液、5%HCl和饱和氯化钠溶液洗涤,经无水硫酸钠干燥,减压除去溶剂,柱层析分离(二氯甲烷:甲醇=50:1),得紫红色半固体SZU-021T 180mg,产率51.6%。
将28mg SZU-021T溶于0.1mL二甲基亚砜(DMSO)中,与0.5mL、97mg三(2-羧乙基)膦(TCEP)水溶液,0.1mL、18mg TBTA的DMSO溶液和0.5mL、54mg无水硫酸铜的水溶液混合,加入20mg SZU-115的甲醇/水混合溶液2mL,室温搅拌2h。经柱层析分离得紫红色固体31mg,产率66%,ESI-MS:m/z=1393.7[M+H] +
SZU-119
Figure PCTCN2019080945-appb-000057
将667mg SZU-009T溶于2mL无水DMF中,加入300mg SZU-020T,室温搅拌过夜。反应完成后,将反应液倒入水中,析出白色固体,干燥得SZU-030T粗品。
将上一步所得SZU-030T溶于10mL无水四氢呋喃(THF)中,冰浴下加入484mg三苯基膦,转入室温继续搅拌过夜,LC-MS监测反应进程。反应毕,加入20mL水,继续搅拌30min,减压抽滤,水洗两次,干燥得SZU-031T 625mg,两步合并收率79%。
取71mg SZU-031T、42mg(+)-JQ-1-COOH(JQ1活性体)、46mg HBTU溶于2mL无水DMF中,加入催化量的4-二甲氨基吡啶(DMAP)和N,N-二异丙基乙胺(DIPEA),室温搅拌24h,LC-MS监测反应进程。经制备型液相色谱分离,冻干得淡黄色固体27mg,产率27%,ESI-MS:m/z=1001.2[M+H] +
SZU-124
Figure PCTCN2019080945-appb-000058
制备方法同SZU-116,只是用FITC替代SZU-017T,得草绿色半固体,两步合并收率31%,ESI-MS:m/z=1199.5[M+H] +
SZU-125
Figure PCTCN2019080945-appb-000059
将34mg SZU-008T溶于500μL无水DMF中,依次加入53mg PD-1/PD-L1抑制剂(CAS#:1675203-84-5)、43mg HBTU、42μL三乙胺(TEA)以及催化量的DMAP,室温搅拌5h。反应完成后,经制备型液相色谱分离,冻干,得白色固体45mg,产率56%,ESI-MS:m/z=802.3[M+H] +
SZU-127
Figure PCTCN2019080945-appb-000060
制备方法同SZU-125,只是用维甲酸替代PD-1/PD-L1抑制剂,得黄色固体, ESI-MS:m/z=627.4[M+H] +
SZU-134
Figure PCTCN2019080945-appb-000061
制备方法同SZU-125,只是用戊二酸酐替代PD-1/PD-L1抑制剂,得白色固体,ESI-MS:m/z=459.1[M+H] +
SZU-138
Figure PCTCN2019080945-appb-000062
制备方法同SZU-125,只是用衣康酸酐替代PD-1/PD-L1抑制剂,得白色固体,ESI-MS:m/z=457.1[M+H] +
SZU-140
Figure PCTCN2019080945-appb-000063
制备方法同SZU-125,只是用乙酸酐替代PD-1/PD-L1抑制剂,得白色固体,ESI-MS:m/z=387.1[M+H] +
SZU-103-GSH
Figure PCTCN2019080945-appb-000064
将SZU-103和等当量谷胱甘肽(Glutathione,GSH)溶于无水DMF中,室温搅拌过夜,LC-MS监测反应进程。反应结束后,经制备型液相色谱分离,得白色固体,产率85%,ESI-MS:m/z=936.2[M+H] +
SZU-142
Figure PCTCN2019080945-appb-000065
将5g SZU-005T置于圆底烧瓶中,加入浓盐酸,反应12h,反应毕,低温下用氢氧化钠调节pH至3-4,析出白色固体4.56g,产率95%,ESI-MS:m/z=345.2[M+H] +
SZU-145
Figure PCTCN2019080945-appb-000066
将20mg SZU-138溶于2mL无水DMF中,依次加入8.7mg D-葡糖胺、9.2mg EDC、6.5mg HOBt,室温搅拌2h。反应结束后,经制备型液相色谱分离,得白色固体12mg,产率44%,ESI-MS:m/z=618.2[M+H] +
SZU-114-GSH
Figure PCTCN2019080945-appb-000067
制备方法同SZU-103-GSH,只是用SZU-114替代SZU-103,得白色固体,ESI-MS:m/z=763.3[M+H] +
SZU-117-GSH
Figure PCTCN2019080945-appb-000068
制备方法同SZU-103-GSH,只是用SZU-117替代SZU-103,得白色固体,ESI-MS:m/z=874.3[M+H] +
SZU-158
Figure PCTCN2019080945-appb-000069
制备方法同SZU-103-GSH,只是用SZU-138替代SZU-103,用2-二甲胺基乙硫醇替代谷胱甘肽,得白色固体,ESI-MS:m/z=562.2[M+H] +。同样方法可以制备SZU-159,只是将SZU138替代为SZU-144和2-二甲胺基乙硫醇室温反应24小时既得SZU-159。
SZU-161
Figure PCTCN2019080945-appb-000070
制备方法同SZU-103-GSH,只是用SZU-138替代SZU-103,用SZU-033T替代谷胱甘肽,得白色固体,ESI-MS:m/z=708.4[M+H] +
SZU-162
制备方法同SZU-161,ESI-MS:m/z=695.81[M+H] +
SZU-160
Figure PCTCN2019080945-appb-000071
制备方法同SZU-115,只是用SZU-032T替代SZU-013T,得白色固体,ESI-MS: m/z=599.3[M+H] +
SZU-114
Figure PCTCN2019080945-appb-000072
在0℃下,向TL-008的无水DMF溶液中加入HBTU、DMAP和TEA。室温搅拌0.5h后,在0℃下加入反式-4-二甲氨基巴豆酸盐酸盐。室温反应24h。将反应液倒入水中,抽滤得到粗品,后经液相分离纯化得纯品(ESI-MS:m/z=456.6[M+H] +)。
SZU-117
Figure PCTCN2019080945-appb-000073
SZU-001S的合成:
在0℃下,向SZU-101的无水DMF溶液中加入1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐(EDCI)、HOBt和DIPEA。室温搅拌0.5h后,在0℃下加入N-B℃哌嗪。室温反应24h。反应液倒入水中,抽滤得到粗品,后经液相分离纯化得纯品(ESI-MS:m/z=613.4[M+H] +)。
SZU-130的合成:
向SZU-001S的二氯甲烷溶液中滴加三氟乙酸。搅拌2h后,减压浓缩反应液。加入5mL乙醇及2N HCl溶液得到其盐酸盐。减压除去溶剂后,加入乙醚或二氯甲烷再次减压除去溶剂,重复多次后得到固体纯品(ESI-MS:m/z=513.5[M+H] +)。 SZU-117的合成:
在0℃下,向SZU-130的无水DMF溶液中依次加入TEA和丙烯酰氯。室温搅拌2h后,将反应液倒入水中,抽滤得到粗品,后经液相分离纯化得纯品(ESI-MS:m/z=567.7[M+H] +)。
SZU-118
Figure PCTCN2019080945-appb-000074
向SZU-101的无水DMF溶液中加入EDCI和HOBt。搅拌15min后,在0℃下加入DIPEA。室温反应0.5h后,在0℃下加入盐酸羟胺,室温反应过夜。将反应液倒入水中,抽滤得到粗品,后经液相分离纯化得纯品(ESI-MS:m/z=460.4[M+H] +)。
SZU-120
Figure PCTCN2019080945-appb-000075
向SZU-101的无水DMF溶液中加入EDCI和HOBt。搅拌15min后,在0℃下加入DIPEA。室温反应0.5h后,在0℃下加入吗啉,室温反应过夜。将反应液倒入水中,抽滤得到粗品,后经液相分离纯化得纯品(ESI-MS:m/z=514.5[M+H] +)。
SZU-122
Figure PCTCN2019080945-appb-000076
在0℃下,向SZU-142的无水DMF溶液中依次加入TEA和丙烯酰氯。室温搅 拌2h后,将反应液倒入水中,抽滤得到粗品,后经液相分离纯化得纯品(ESI-MS:m/z=399.4[M+H] +)。
SZU-128
Figure PCTCN2019080945-appb-000077
向SZU-101的无水DMF溶液中加入EDCI和HOBt。搅拌15min后,在0℃下加入DIPEA。室温反应0.5h后,在0℃下加入1-甲基哌嗪,室温反应过夜。将反应液倒入水中,抽滤得到粗品,后经液相分离纯化得纯品(ESI-MS:m/z=527.7[M+H] +)。
SZU-129
Figure PCTCN2019080945-appb-000078
向SZU-101的无水DMF溶液中加入EDCI和HOBt。搅拌15min后,在0℃下加入DIPEA。室温反应0.5h后,在0℃下加入硫吗啉,室温反应过夜。将反应液倒入水中,抽滤得到粗品,后经液相分离纯化得纯品(ESI-MS:m/z=530.6[M+H] +)。
SZU-131
Figure PCTCN2019080945-appb-000079
向SZU-101的无水DMF溶液中加入EDCI和HOBt。搅拌15min后,在0℃下加入DIPEA。室温反应0.5h后,在0℃下加入1-乙酰基哌嗪,室温反应过夜。将反应液倒入水中,抽滤得到粗品,后经液相分离纯化得纯品(ESI-MS:m/z=555.6 [M+H] +)。
SZU-132
Figure PCTCN2019080945-appb-000080
向SZU-101的无水DMF溶液中加入EDCI和HOBt。搅拌15min后,在0℃下加入DIPEA。室温反应0.5h后,在0℃下加入吡咯烷,室温反应过夜。将反应液倒入水中,抽滤得到粗品,后经液相分离纯化得纯品(ESI-MS:m/z=498.5[M+H] +)。
SZU-133
Figure PCTCN2019080945-appb-000081
向SZU-142的无水DMF溶液中加入马来酸酐。反应过夜后,将反应液倒入水中,抽滤得到粗品,后经液相分离纯化得纯品(ESI-MS:m/z=443.3[M+H] +)。
SZU-143
Figure PCTCN2019080945-appb-000082
向富马酸单甲酯的无水DMF溶液中加入EDCI和HOBt。搅拌15min后,在0℃下加入DIPEA。室温反应0.5h后,在0℃下加入SZU-142,室温反应过夜。将反应液倒入水中,抽滤得到粗品,后经高效液相HPLC分离纯化得纯品(ESI-MS: m/z=457.4[M+H] +)。
SZU-144
Figure PCTCN2019080945-appb-000083
向SZU-143的甲醇/水(1:1)混合溶液中加入氢氧化钠(1.1当量)。室温搅拌8小时,反应完成后用1N HCl溶液中和反应液,经抽滤、水洗得到粗品,后经高效液相HPLC分离纯化得纯品(ESI-MS:m/z=443.5[M+H] +)。
SZU-146
Figure PCTCN2019080945-appb-000084
向SZU-101的无水DMF溶液中加入EDCI和HOBt。搅拌15min后,在0℃下加入DIPEA。室温反应0.5h后,在0℃下加入3-(三氟甲基)-5,6,7,8-四氢-[1,2,4]三唑并[4,3-a]吡嗪(Fuzuopali中间体),室温反应过夜。将反应液倒入水中,抽滤得到粗品,后经液相分离纯化得纯品(ESI-MS:m/z=619.6[M+H] +)。
SZU-147
Figure PCTCN2019080945-appb-000085
向SZU-101的无水DMF溶液中加入等摩尔的EDCI和HOBt。搅拌15min后,在0℃下加入DIPEA。室温反应0.5h后,在0℃下加入等摩尔的Niraparib,室温反应过夜。将反应液倒入水中,抽滤得到粗品,后经高效液相HPLC分离纯化得纯品SZU-147(ESI-MS:m/z=747.77[M+H] +)。
SZU-148
Figure PCTCN2019080945-appb-000086
将1:1的氢氧化锂和SZU-101加入水中,搅拌2-3h,后冻干除去溶剂得纯品。
SZU-150、151、152和153
Figure PCTCN2019080945-appb-000087
SZU-151的合成:
向N,N-二甲基乙醇胺中加入金属Na,形成钠盐后,向反应液中加入起始原料,加热至95℃反应3h。减压除去溶剂后加入水,抽滤得到固体,水洗至pH值7-8后,减压干燥得纯品SZU-151。
SZU-152的合成:
向SZU-151的乙酸溶液中缓慢滴加溴素。搅拌过夜后,用NaHCO 3中和反应液。向所得粘性化合物中加如少许乙醇。后加入硫代硫酸钠溶液除去剩余溴。抽滤并干燥所得固体后,加入10%NaOH溶液,再次抽滤后减压干燥。制备型液相色谱纯化得溴化物。
向甲醇中加入金属Na,搅拌后加入起始原料,加热至80℃反应2h。减压除去甲醇,用HCl中和。抽滤并减压干燥所得固体SZU-152。
SZU-150和SZU-153的合成:
将SZU-152加入HCl并搅拌12h。减压除去溶液,经液相制备型色谱分离后得到化合物SZU-150(ESI-MS:354.5[M+H] +)和SZU-153(ESI-MS:m/z=372.4[M+H] +)。
SZU-154
Figure PCTCN2019080945-appb-000088
向SZU-152的乙醇/水(1:1)混合溶液中加入NaOH,回流过夜。减压浓缩,调pH至3。液相制备型色谱纯化得纯品SZU-154(ESI-MS:m/z=387.5[M+H] +)。
SZU-155
Figure PCTCN2019080945-appb-000089
将SZU-154溶解于浓HCl并搅拌过夜。减压除去溶剂,制备型液相色谱纯化得纯品SZU-155(ESI-MS:m/z=373.5[M+H] +)。
SZU-104
Figure PCTCN2019080945-appb-000090
将50mg SZU-102溶于0.5mL DMSO中,加入41mg叔丁氧羰基(Boc)保护的赖氨酸,室温搅拌过夜。反应结束后,冻干除去DMSO,经制备型液相色谱分离,得到白色固体69mg,收率85%,ESI-MS:m/z=633.7[M+H] +
SZU-105
Figure PCTCN2019080945-appb-000091
将50mg SZU-102溶于0.5mL DMSO中,加入47mg B℃保护的赖氨酸,室温搅拌过夜。反应结束后,冻干除去DMSO,经制备型液相色谱分离,得到白色固体68mg,收率83%,ESI-MS:m/z=533.6[M+H] +
SZU-108
Figure PCTCN2019080945-appb-000092
将109mg SZU-102溶于1mL DMSO中,加入50mg PEG2,室温搅拌过夜。反应结束后,冻干除去DMSO,经制备型液相色谱分离,得到白色固体125mg,收率79%,ESI-MS:m/z=564.6[M+H] +
SZU-109
Figure PCTCN2019080945-appb-000093
将87mg SZU-102溶于0.9mL DMSO中,加入50mg PEG3,室温搅拌过夜。反应结束后,冻干除去DMSO,经制备型液相色谱分离,得到白色固体105mg,收率77%,ESI-MS:m/z=608.7[M+H] +
SZU-110
Figure PCTCN2019080945-appb-000094
将193mg羧基化合物溶于2mL DMSO中,依次加入100mg EDCI和59mg N-羟基琥珀酰亚胺(NHS),室温搅拌两小时后,向反应液中加入50mg PEG2,室温搅拌过夜。反应结束后,冻干除去DMSO,经制备型液相色谱分离,得到白色固体203mg,收率73%,ESI-MS:m/z=519.5[M+H] +
SZU-111
Figure PCTCN2019080945-appb-000095
将155mg羧基化合物溶于1.5mL DMSO中,依次加入79mg EDCI和47mg NHS,室温搅拌两小时后,向反应液中加入50mg PEG3,室温搅拌过夜。反应结束后,冻干除去DMSO,经制备型液相色谱分离,得到白色固体174mg,收率72%,ESI-MS:m/z=563.6[M+H] +
SZU-149和SZU-163
Figure PCTCN2019080945-appb-000096
将100mL的无水正丁醇中,于0℃下缓慢加入0.5g的金属钠。30min后,加入3g的反应物a,反应物于100℃搅拌8小时,冷却到室温,倾倒大量水中,析出黄色固体过滤,用四氢呋喃洗三次,干燥得产物b 2.5g。
将2.5gb与100mL的氯仿混合搅拌均匀,加入10mL的溴素,室温反应24小时,过滤得产物c 2.2g。将产物c与二氧六环60mL混合,加入浓盐酸10mL,混合物于110℃反应12小时,反应物倾入600mL水中,析出固体粗品,产物过滤,溶解于60mL的1N NaOH中,冷却下用盐酸中和到pH4,析出纯品,干燥后得1g SZU-149,收率55%。MS(ESI):m/z:[M+Na]381.42。
将0.5g SZU-149溶解于无水甲醇,加入蓝尼镍0.5g,于氢气压力3个大气压下氢化反应24小时,过滤,减压蒸馏得SZU-163纯品0.4g,收率89%;MS(ESI):m/z:[M+H]329.41。
SZU-166和SZU-181
Figure PCTCN2019080945-appb-000097
SZU-166的合成:
取SZU-163 1.5g溶解在30mL的DMSO中,加入1mL三乙胺,0.5g的氯甲酸乙酯;混合物室温搅拌2小时。混合物真空蒸馏至少量体积,冷却至室温,加入30mL乙酸乙酯,析出固体,过滤,乙酸乙酯洗,干燥得到SZU-166纯品0.75g,收率46%,MS(ESI):m/z:[M+H]355.40。
SZU-181的合成(SZU-166偶联乙肝PreS抗原表位形成的复合物):
Figure PCTCN2019080945-appb-000098
取SZU-166(10mg)与PreS-肽(90mg)混合溶液于3mL的DMF中,加入0.2mL的三乙胺,混合物于20℃搅拌反应24小时。加入3mL的二氯甲烷,产品沉淀离心分离,粗品HPLC分离纯化,冷冻干燥得SZU-181 65mg。质谱确定分子量:3512.80:(1756.3x2),(1170.9x3)。
SZU-136和SZU-139
Figure PCTCN2019080945-appb-000099
将EDCI和HOBt加入等摩尔数的4-戊炔酸的DMF溶液中,15分钟后加入三乙胺,反应与0℃搅拌15分钟后,继续室温搅拌反应30分钟,然后加入等摩尔的TL-008于室温下反应过夜。反应也倾倒与水中,析出的产品过滤,真空干燥后得SZU-136收率87%,MS(ESI):m/z:[M+1]425.51.
将SZU-136、叠氮化合物2、抗坏血酸钠以等摩尔加入DMSO和水的1:1溶液中,于室温搅拌过夜,加入10倍体积的水,过滤,HPLC纯化,干燥得SZU-139,收率77%,MS(ESI):m/z:[M+1]654.72。
SZU-169
Figure PCTCN2019080945-appb-000100
将SZU-134溶解于DMSO中,加入等摩尔的NHS和EDCI,搅拌10分钟后,加入等摩尔的直接紫N(OX40激动剂)。反应物室温密闭反应3天。反应物加入20倍的水,析出的固体过滤,加入2N的NaOH与10℃搅拌30分钟,过滤,滤液用2N盐酸酸化到PH1,析出固体产品SZU-169,收率52%,MS(ESI):m/z:[M+2Na]1611.64。
SZU-174
Figure PCTCN2019080945-appb-000101
将a反应物溶解于少量DMF中,加入一倍当量的叠氮化钠,于室温搅拌反应24小时,反应物中加入10倍量体积的水,用乙酸乙酯提取,提取相用水洗三次,减压蒸馏除去溶剂,得产物b,收率90%。
将Afatinib(阿法替尼)100mg和50mg b溶解于15mL的DMF中,加入微量的NaI,于60℃反应24小时;向反应混合物加入正丁醇100mL,混合物减压蒸馏至少量体积(约5mL),冷却至室温,加入50mL的乙酸乙酯,析出固体产品c,真空干燥得118mg产物c,MS(ESI):m/z:[M+H]688.21。
将产物c 100mg、60mg SZU-136、10mg硫酸铜、30mg微生素c加入DMSO和水的1:1溶液中,于室温搅拌过夜,加入10倍体积的水,过滤,HPLC纯化,干燥得SZU-174,105mg,收率65%,MS(ESI):m/z:[M+1]1112.70。
SZU-158-PD-1
Figure PCTCN2019080945-appb-000102
取5mg的SZU-158,溶解于0.5mL的DMSO中,加入等摩尔的NHS和EDCI,室温搅拌4小时。将PD-1抗体20mg(购自Bioxcell,J43)的0.5mLPBS溶液加入,混合物于密闭15℃搅拌过夜。混合反应液用滤膜过滤,得SZU-158-PD-1偶联产物,冷冻干燥得白色固体SZU-158-PD-1,18mg。质谱检测偶联度为n=4。(SZU-158-PD-1的免疫细胞因子活性见图58和65,抗体功能见图58、64和65)。
SZU-158-OX40
Figure PCTCN2019080945-appb-000103
取5mg的SZU-158,溶解于0.5mL的DMSO中,加入等摩尔的NHS和EDCI,室温搅拌4小时。将OX40抗体20mg(购自Bioxcell,OX-86)的0.5mLPBS溶液加入,混合物于密闭15℃搅拌过夜。混合反应液用滤膜过滤,得SZU-158-OX40偶联产物,冷冻干燥得白色固体SZU-158-OX40,17mg。质谱检测偶联度为n=4。(SZU-158-OX40的免疫细胞因子活性见图58和65,抗体功能见图58、64和65)。
SZU-158-PD-L1
Figure PCTCN2019080945-appb-000104
取5mg的SZU-158,溶解于0.5mL的DMSO中,加入等摩尔的NHS和EDCI,室温搅拌4小时。将PD-L1抗体20mg(购自Bioxcell,10F.9G2)的0.5mLPBS溶液加入,混合物于密闭15℃搅拌过夜。混合反应液用滤膜过滤,得SZU-158-PD-L1偶联产物,冷冻干燥得白色固体SZU-158-PD-L1,15mg。质谱检测偶联度为n=4。(SZU-158-PD-L1的免疫细胞因子活性见图58和65,抗体功能见图58、64和65)。
SZU-158偶联抗体形成的新的免疫靶向化合物由于带有了二甲氨基基团可以成盐,形成离子化的正电荷,有利于提高治疗效果和水溶解性。
SZU-168和SZU-175
Vemu-1是Vemurafenib的前体,购自药明康德公司。
Figure PCTCN2019080945-appb-000105
Figure PCTCN2019080945-appb-000106
将Vemu-1溶解于DMF中,加入2倍摩尔的三乙胺,冷却至0℃,加入1倍摩尔的乙烯基磺酰氯,混合物缓慢升至室温搅拌8小时,混合物加入10倍体积的冰水,充分搅拌1小时,饱和Na 2CO 3调节pH至8,析出固体,过滤,水洗2次,干燥得Vemu-2。将1g Vemu-2溶解在30mL的DMF中,加入0.33g的巯基乙胺,混合物室温搅拌12小时,反应物减压蒸馏除溶剂,得Vemu-3粗品,硅胶柱层析分离得Vemu-3纯品0.98g,收率85%,MS(ESI):m/z:[M+1]552.04。
将0.3g Vemu-3溶解在10mL的DMSO中,加入0.2g的SZU-166,混合物于40℃搅拌反应8小时,加入100mL水,离心沉淀得粗品,粗品溶解在20mL的冰 醋酸中,过滤后,滤液加入100mL的水,析出纯品SZU-168,干燥得0.33g,MS(ESI):m/z:[M+1]906.41。
将1g SZU-158溶解在10mL的DMSO中,加入0.2g NHS(N-羟基琥珀酰亚胺)、0.33g EDCI(1-(3-二甲基氨基丙基)-3-乙基碳化二亚胺盐酸盐),混合物室温搅拌过夜得SZU-137。加入0.9g Vemu-3,室温继续搅拌12小时,混合物加入100mL水,过滤,得粗品,用乙酸重结晶,得SZU-175醋酸盐1.22g,MS(ESI):m/z:[M+1]1095.81。
SZU-176
Osimertinib中间体购自药明康德公司。
Figure PCTCN2019080945-appb-000107
Figure PCTCN2019080945-appb-000108
将1g SZU-144溶解在10mL的DMSO中,加入0.26g NHS、0.4g EDCI,混合物室温搅拌过夜。加入1g Osimertinib中间体,室温继续搅拌12小时,混合物加入100mL水,过滤,得粗品,用乙酸重结晶,得SZU-176醋酸盐1.5g,MS(ESI):m/z:[M+1]870.81。
SZU-177
Figure PCTCN2019080945-appb-000109
将100mg Erlotinib、150mg SZU-160、20mg硫酸铜和20mg微生素c加入DMSO和水的1:1溶液中(10mL),于室温搅拌过夜,加入10倍体积的水,过滤,HPLC纯化,干燥得SZU-177,176mg,收率70%,MS(ESI):m/z:[M+1]993.10。
SZU-178
Figure PCTCN2019080945-appb-000110
取3.5mg的SZU-160,溶解于0.5mL的DMSO中,加入等摩尔的NHS和EDCI,室温搅拌4小时。将PD-L1抗体20mg(购自Bioxcell,10F.9G2)的0.5mLPBS溶液加入,混合物于密闭15℃搅拌过夜。混合反应液用滤膜过滤,得SZU-160-PD-L1抗体偶联产物溶液;将2.5mg的Erlotinib、2mg的抗坏血酸钠和2mg的硫酸铜加入,混合物室温搅拌反应12小时,反应液用滤膜过滤,冷冻干燥得白色固体SZU-178(即SZU-178偶联Erlotinib和PD-L1抗体形成的复合物SZU-160-Erlotinib-PD-L1),12mg。质谱检测偶联度为n=4。(SZU-178的免疫细胞因子激活功能和抗肿瘤功能见附图58、64和65)。
SZU-136-miRNA21
Figure PCTCN2019080945-appb-000111
将71mg的miRNA21(购自苏州吉玛基因股份有限公司)溶于10mL的乙腈和水1:1的溶剂中,加入14mg的Ag 2CO 3,混合物于室温搅拌12小时,减压蒸除溶剂得Ag-miRNA21,69mg(96%)。将此Ag-miRNA21与氯化叠氮物5mg混合于20mL的乙腈,混合物加热回流4小时,冷却到室温,加入50mL水,搅拌15分钟后,过滤。滤液减压蒸馏至少量体积(10mL),加入50mL的四氢呋喃,搅拌10分钟后,离心沉淀,沉淀真空干燥得N3-miRNA21,45mg(收率61%)。MS(ESI):m/z:[M+Na]7307.42。
取40mg的N3-miRNA21、3mg的SZU-136、2mg的硫酸铜和2mg的维生素c,混合加入DMSO和水的1:1溶液中(10mL),于室温搅拌过夜,产物经HPLC纯化,冷冻干燥,真空干燥得SZU-136-miRNA21(即SZU-136偶联miRNA21形成的复合物),14mg,收率33%,MS(ESI):m/z:[M+Na]7731.86。
SZU-179
Figure PCTCN2019080945-appb-000112
取580mg的SZU-115、267mg的Zidovudine、25mg的硫酸铜和25mg的抗坏血酸钠,混合加入DMSO和水的1:1溶液中(25mL),于室温搅拌过夜,加入10倍体积的水,真空蒸馏至较少体积(约10mL),加入30mL水,混合液用5%NaOH调节到pH10,过滤,滤液用冰乙酸调节为pH5,析出产物,过滤出产品,真空干燥得SZU-179,728mg,收率86%,MS(ESI):m/z:[M+Na]871.42。
SZU-115-PD-L1-靶向药(即SZU-115偶联PD-L1抗体和靶向药形成的复合物)
Figure PCTCN2019080945-appb-000113
SZU-115-抗体-靶向药的复合物
SZU-180
Figure PCTCN2019080945-appb-000114
偶联PD-L1抗体的方法与SZU-178制备中相同,click反应方法与SZU-179制备中相同,得到SZU-180。所得产物可用于治疗艾滋病。
效果实施例
效果实施例1:检测本发明SZU系列小分子免疫激动剂和新型免疫靶向化合物对脾 淋巴细胞的免疫激发作用
1.脾淋巴细胞的提取
(1)取BALB/c或者C57BL/6小鼠脾,在含小鼠淋巴细胞分离液的小皿内研磨,经0.22μm滤膜过滤后得到细胞悬液。经离心处理得到淋巴细胞。将取出的淋巴细胞放入15mL离心管内并加入10mL 1640完全培养基,混匀。转速250g离心10min,弃上清。
(2)用1mL红细胞裂解液重悬细胞,裂解1分钟后加4mL 1640完全培养基终止。转速1000rpm,离心5分钟,弃上清。
(3)用2mL 1640完全培养基重悬细胞并计数,将细胞按照1×10 6个/孔种于24孔板内。
2.获取样品
用不同浓度的本发明SZU系列小分子免疫激动剂和新型免疫靶向化合物刺激接种于24孔板内的脾淋巴细胞,将24孔板移入孵箱,刺激24小时后轻轻吸取上清,即为Elisa检测的样品。浓度和浓度梯度由各个测定样品的需要而定。
3.Elisa检测
(1)包被:10X包被缓冲液稀释到1X后,用于稀释捕获抗体。在96孔酶标板内加入稀释后的捕获抗体,每孔100μl,用保鲜膜封好放置在37℃ 2-4小时或者4℃冰箱过夜。吸去酶标板内的液体,用洗涤缓冲液(PBST:PBS溶液加千分之五Tween-20)洗板三次,拍干。
(2)封闭:每孔加入200μl已稀释的封闭液,用保鲜膜封好,室温封闭一小时。用PBST洗板三次,拍干。
(3)加样品:设置12个标准品,每个标准品浓度设立2个复孔。标准品最高浓度为2000pg/mL,用稀释缓冲液倍比稀释至所需浓度。标准品浓度依次为:2000pg/mL、1000pg/mL、500pg/mL、250pg/mL、125pg/mL、62.5pg/mL、31.5pg/mL、15.75pg/mL、7.875pg/mL、3.9375pg/mL、1.96875pg/mL、0pg/mL。将不同浓度的药物刺激脾淋巴细胞得到的上清样品加入到对应的孔内,每个样品设置三个复孔,另需设置空白对照孔和阴性对照孔,并作好相应的标记。将加好标准品和样品的96孔酶标板用保鲜膜封好,室温孵育2小时或者4℃冰箱过夜。吸去板内液体,用PBST洗板三次,拍干。
(4)二抗:用稀释缓冲液将检测抗体稀释到所需浓度,每孔加入100μl,室温孵育1小时。吸去板内液体,用PBST洗涤五次,拍干。
(5)加酶标抗体:用稀释缓冲液将Avidin-HRP稀释到所需浓度,每孔加入100μl,室温孵育30分钟。吸去板内液体,用PBST洗板五次,拍干。
(6)显色:每孔加入100μl 3,3',5,5'-四甲基联苯胺(TMB)显色液,室温避光孵育15分钟。
(7)终止:显色完成后,每孔加入50μl终止液,终止液为1mol/L H 2SO 4
(8)检测:将终止后的96孔酶标板放入全波长酶标仪内,在450nm波长处读取吸光度值。将数据导出,用软件作出标准曲线图,并得出线性回归方程。计算出免疫细胞产生免疫因子(INF-γ、IL-6等)的浓度。具体实验结果请参见附图。
效果实施例2:本发明新型免疫靶向化合物的抗肿瘤效果
1.小鼠肿瘤治疗方案
(1)将6-8周龄的BALB/c或者C57BL/6小鼠称重,按50mg/kg i.p.戊巴比妥麻醉,种植瘤部位(背部)剃毛,胶带固定。
(2)用棉签蘸取75%酒精在手术部位消毒,在种植瘤部位开1cm左右小口,向里注入100ul肿瘤细胞悬液(5×10 4个CT26细胞、B16细胞或4T1细胞)。用手术线缝合,消毒。术后连续3天腹腔注射5万单位氨苄青霉素/100μL/只。
2.给药
分别给药PBS空白对照、免疫激动剂或新型免疫靶向化合物。给药剂量按照实际需要而定(有效、安全剂量原则),将各物质溶解在适当的溶剂,每次给药体积100μL;各组给药方式为腹腔注射。在种植肿瘤后的第7天、第15天、第22天和第29天各组分别给药;并定期量瘤大小。当肿瘤达到1500mm 3或者大于体重的15%时 将小鼠安乐死。肿瘤抑制和存活率结果见附图57、58和64。可见本发明中新型免疫靶向化合物处理组具有显著提高的抗肿瘤效应。
本发明的新型小分子免疫激动剂和新型免疫靶向化合物的生物活性测试方法不局限于上述测试方法,也可使用其它相关公知或公认的活性测试方法。同理本发明中的有关活性示意图也不局限于所表示的一种图示方法,图示方法可以启示本领域技术人员实现本发明中新型小分子免疫激动剂和新型免疫靶向化合物的应用效果。

Claims (20)

  1. 式(I)的小分子免疫激动剂或其异构体或药学上可接受的盐:
    Figure PCTCN2019080945-appb-100001
    其中
    A 1表示O或C;
    A 2表示硝基、氨基、异氰酸酯基、亚烷基氨基、亚烷基异氰酸酯基或选自式(II)或式(III)的基团:
    Figure PCTCN2019080945-appb-100002
    其中
    R 1和R 2各自独立地表示(CH 2) p(NH) q,其中p为0、1或2,q为0、1或2;
    R 3表示O或S;
    R 4表示(CH 2) x(C=O) y(NH) z[(CH 2) 2O] r(CH 2) s(C=C) t,其中x为0至5的整数,y为0、1或2,z为0、1或2,r为0、1、2或3,s为0至5的整数且t为0、1或2,其中当s≠0且t=0时,(CH 2) s中靠近羰基的碳原子可以被选自以下的基团取代:-NHBoc、氨基、-NHFmoc、
    Figure PCTCN2019080945-appb-100003
    Figure PCTCN2019080945-appb-100004
    或与另一碳原子形成双键;
    R 5表示羟基、烷氧基、羟胺基、乙烯基或选自以下的基团:
    Figure PCTCN2019080945-appb-100005
    R 6表示烷基或选自以下的基团:
    Figure PCTCN2019080945-appb-100006
    Figure PCTCN2019080945-appb-100007
    其中*表示连接至碳原子的位点;
    其中排除选自以下的化合物:
    Figure PCTCN2019080945-appb-100008
  2. 权利要求1的式(I)的小分子免疫激动剂或其异构体或药学上可接受的盐:
    Figure PCTCN2019080945-appb-100009
    Figure PCTCN2019080945-appb-100010
    其中
    A 1表示O或C;
    A 2表示硝基、氨基、异氰酸酯基、C 1-C 6亚烷基氨基、C 1-C 6亚烷基异氰酸酯基或选自式(II)或式(III)的基团:
    Figure PCTCN2019080945-appb-100011
    其中
    R 1和R 2各自独立地表示(CH 2) p(NH) q,其中p为0或1,q为0或1;
    R 3表示O或S;
    R 4表示(CH 2) x(C=O) y(NH) z[(CH 2) 2O] r(CH 2) s(C=C) t,其中x为0至5的整数,y为0或1,z为0或1,r为0、1、2或3,s为0至5的整数且t为0或1,其中当s≠0且t=0时,(CH 2) s中靠近羰基的碳原子可以被选自以下的基团取代:-NHBoc、氨基、-NHFmoc、
    Figure PCTCN2019080945-appb-100012
    Figure PCTCN2019080945-appb-100013
    或与另一碳原子形成双键;
    R 5表示羟基、C 1-C 6烷氧基、羟胺基、乙烯基或选自以下的基团:
    Figure PCTCN2019080945-appb-100014
    R 6表示C 1-C 6烷基或选自以下的基团:
    Figure PCTCN2019080945-appb-100015
    Figure PCTCN2019080945-appb-100016
    其中*表示连接至碳原子的位点;
    其中排除选自以下的化合物:
    Figure PCTCN2019080945-appb-100017
  3. 权利要求2的式(I)的小分子免疫激动剂或其异构体或药学上可接受的盐:
    Figure PCTCN2019080945-appb-100018
    其中
    A 1表示O或C;
    A 2表示硝基、氨基、异氰酸酯基、亚甲基氨基、亚甲基异氰酸酯基或选自式(II)或式(III)的基团:
    Figure PCTCN2019080945-appb-100019
    其中
    R 1和R 2各自独立地表示(CH 2) p(NH) q,其中p为0或1,q为0或1;
    R 3表示O或S;
    R 4表示(CH 2) x(C=O) y(NH) z[(CH 2) 2O] r(CH 2) s(C=C) t,其中x为0至5的整数,y为0或1,z为0或1,r为0、1、2或3,s为0至5的整数且t为0或1,其中当s≠0且t=0时,(CH 2) s中靠近羰基的碳原子可以被选自以下的基团取代:-NHBoc、氨基、-NHFmoc、
    Figure PCTCN2019080945-appb-100020
    Figure PCTCN2019080945-appb-100021
    或与另一碳原子形成双键;
    R 5表示羟基、甲氧基、羟胺基、乙烯基或选自以下的基团:
    Figure PCTCN2019080945-appb-100022
    R 6表示甲基或选自以下的基团:
    Figure PCTCN2019080945-appb-100023
    Figure PCTCN2019080945-appb-100024
    其中*表示连接至碳原子的位点;
    其中排除选自以下的化合物:
    Figure PCTCN2019080945-appb-100025
    Figure PCTCN2019080945-appb-100026
  4. 权利要求3的式(I)的小分子免疫激动剂,或其异构体或药学上可接受的盐,其为选自以下的SZU系列化合物或其药学上可接受的盐:SZU-104、SZU-105、SZU-107、SZU-108、SZU-109、SZU-110、SZU-111、SZU-112、SZU-113、SZU-115、SZU-118、SZU-120、SZU-127、SZU-128、SZU-129、SZU-131、SZU-132、SZU-133、SZU-134、SZU-135、SZU-136、SZU-137、SZU-138、SZU-139、SZU-140、SZU-142、SZU-143、SZU-144、SZU-145、SZU-149、SZU-158、SZU-159、SZU-160、SZU-161、SZU-162、SZU-163、SZU-166或SZU-171。
  5. 免疫靶向化合物或其药学上可接受的盐,其由小分子免疫激动剂或其与含巯基的多肽如谷胱甘肽形成的加成产物与靶向药或抗体共价偶联形成,其通式表示如下:
    Figure PCTCN2019080945-appb-100027
    其中TLA表示小分子免疫激动剂或其与含巯基的多肽如谷胱甘肽形成的加成产物;Tar表示靶向药或抗体;n和m各自独立地表示1至5之间的数值;L代表连接链,其为直链或支链烷烃或者聚乙二醇链,L的两端直接与TLA和/或Tar共价连接或通过其他基团与TLA和/或Tar共价连接。
  6. 权利要求5的免疫靶向化合物或其药学上可接受的盐,其中所述小分子免疫激动剂包括权利要求1至3中任一项的小分子免疫激动剂以及选自以下的化合物:
    Figure PCTCN2019080945-appb-100028
    Figure PCTCN2019080945-appb-100029
  7. 权利要求5的免疫靶向化合物或其药学上可接受的盐,其中所述小分子免疫激动剂为选自以下的SZU系列化合物或其药学上可接受的盐:SZU-102、SZU-104、SZU-105、SZU-106、SZU-107、SZU-108、SZU-109、SZU-110、SZU-111、SZU-112、SZU-113、SZU-115、SZU-118、SZU-120、SZU-127、SZU-128、SZU-129、SZU-131、SZU-132、SZU-133、SZU-134、SZU-135、SZU-136、SZU-137、SZU-138、SZU-139、SZU-140、SZU-142、SZU-143、SZU-144、SZU-145、SZU-149、SZU-158、SZU-159、SZU-160、SZU-161、SZU-162、SZU-163、SZU-166、SZU-171、SZU-101、SZU-103、SZU-114、SZU-117、SZU-122或SZU-130。
  8. 权利要求5的免疫靶向化合物或其药学上可接受的盐,其中所述TLA为选自以下的化合物:SZU-103-GSH、SZU-114-GSH、SZU-117-GSH、SZU-122-GSH、SZU-127-GSH、SZU-133-GSH、SZU-138-GSH或SZU-144-GSH。
  9. 权利要求5的免疫靶向化合物或其药学上可接受的盐,其中所述Tar选自以下的至少一种:Dasatinib,Imatinib,Saracatinib,Ponatinib,Nilotinib,Danusertib,AT9283Degrasyn,Bafetinib,kw-2449,nyp-bhg712,dcc-2036,GZD824.,GNF-2,PD173955,GNF-5,Bosutinib,Gefitinib,Erlotinib,Sunitinib,Ruxolitinib,Tofacitinib,Lapatinib,Vandetanib,Sorafenib,Sunitinib,Axitinib,Nintedanib,Regorafenib,Pazopanib,Lenvatinib,Crizotinib,Ceritinib,Cabozantinib,DWF,Afatinib,Ibrutinib,Niraparib,Palbociclib,B43,KU004,Foreinib,KRCA-0008,PF-06439015,PF-06463922,Canerlinib,GSA-10,GW2974,GW583340,W24002,CP-380736,D2667,Mubritinib,PD153035,PD168393,Pelitinib,PF-06459988,PF06672131,PF-6422899,PKI166,ReveromycinA, Tyrphostin 1,tyrphostin23,lyrphostin51,Tyrphostin,AG528,Tyrphostin,AG658,Tyrphostin,AG825,Tyrphostin,AG835,Tyrphostin,AG1478,Tyrphostin,RG13022,Tyrphostin,RG14620,B178,GSK1838705A,PD-161570,PD173074,SU-5402,Roslin2,Picropodophyllotoxin,PQ401,i-ome-tyrphostin,AG538,GNF5837,GW441756,Tyrphostin,AG879,DMPQ,jnj-10198409,PLX647,Trapidil,TyrphostinA9,Tyrhostin,AG370,Lestaurtinib,DMH4,Eldanamvcin,Genistein,Gw2580,HerbimycinA,Lavendustin,CMidostaurin,nvp-bhg712,PD158780,pd-166866,pf-0627334,PP2,RPL,SU11274,SU5614,Symadex,Tyrphostin,AG34,Tyrphostin,AG974,Tyrphostin,AG1007,UNC2881,Honokiol,SU1498,SKLB1002,cp-547632,jk-p3,KRN633,sc-1,ST638,SU 5416,Sulochrin,Tyrphostin,SU1498,rociletinib,Dacomitinib,Tivantinib,Neratinib,Masitinib,Vatalanib,Icotinib,xl-184,osi-930,AB1010,Quizartinib,AZD9291,Tandutinib,HM61713,Brigantinib,Vemurafenib(plx-4032),Semaxanib,AZD2171,Crenolanib,Damnacanthal,Fostamatinib,Motesanib,Radotinib,osi-027,Linsitinib,BIX02189,PF-431396,PND-1186,PF-03814735,PF-431396,sirollmus,temsirolimus,everolimus,deforolimus,Zotarolimus,BEZ235,INK128,Omipalisib,AZD8055,MHY1485,PI-103,KU-0063794,ETP-46464,GDC0349,XL388,WYE-354,WYE-132,GiSK1059615,WAY-600,PF-04691502,wYE-687,PP121,BGT226,AZD2o014,PP242,CH5132799,P529,GDC0980,GDC-0994,XMD82,Ulixertinib,FR180204,SCH772984,Trametinib,PD184352,PD98059,Selumetinib,PD325901,U0126,Pimasertinib,tak-733,AZD8330,Binimetinib,PD318088,SL-327,Refametinib,gdc-0623,Cobimetinib,b1-847325,Adaphostin,GNF2,PPYA,aim-100,ASP 3026,LFM,Toceranib,JQ1,Niraparib,Fuzuopali,palbociclib,ARS-853,ARS-1620,Chlorazol-violet N(直接紫N),miRNA-21,PreS,Zidovudine,Lenvatinib,LY-364947,ARS-1620或Reparixin,EGFR抑制剂,TKI,BRD4抑制剂,KRAS通路相关靶点抑制剂,BRAF抑制剂,BTK抑制剂,PARP抑制剂,PD-L1抑制剂(包括抗体、小分子),PD-1抑制剂(包括抗体、小分子),OX40激动剂(包括 抗体、小分子),CD122抗体,CD3抗体,CD19抑制剂,CD20抑制剂,MUC1抑制剂,MUC16抑制剂,CDK4/6抑制剂,TGF-β抑制剂,CXCR抑制剂,CCL和CXCL趋化因子抑制剂以及miRNA。
  10. 权利要求9的免疫靶向化合物或其药学上可接受的盐,其中所述Tar选自如下的至少一种:TKI、EGFR抑制剂、KRAS抑制剂、BRAF抑制剂、BTK抑制剂、BRD4抑制剂、PD-L1抑制剂、PD-1抑制剂、OX40激动剂、PARP抑制剂或CDK4/6抑制剂。
  11. 权利要求5的免疫靶向化合物或其药学上可接受的盐,其中L为
    Figure PCTCN2019080945-appb-100030
  12. 权利要求5的免疫靶向化合物或其药学上可接受的盐,其中所述其他基团包括酰胺、烷氧键、烷硫键、取代胺基、季胺盐、cilck反应形成的杂环、可用蛋白酶解离的氨基酸基团、脲基团或硫脲基团。
  13. 权利要求5的免疫靶向化合物或其药学上可接受的盐,其为选自以下的SZU系列化合物或其药学上可接受的盐:SZU-116、SZU-119、SZU-124、SZU-125、SZU-146、SZU-147、SZU-168、SZU-169、SZU-174、SZU-175、SZU-176、SZU-177、SZU-178、SZU-179、SZU-180、SZU-181、
    SZU-158-PD-L1、SZU-158-OX40、SZU-158-PD-1或SZU-136-miRNA21。
  14. 权利要求1至4中任一项的式(I)的小分子免疫激动剂或其异构体或药学上可接受的盐,化合物SZU-101、SZU-103、SZU-114、SZU-117、SZU-122和SZU-130以及权利要求5至13中任一项的免疫靶向化合物或其药学上可接受的盐在制备参与免疫调节的药物中的用途。
  15. 权利要求1至4中任一项的式(I)的小分子免疫激动剂或其异构体或药学上可接受的盐,化合物SZU-101、SZU-103、SZU-114、SZU-117、SZU-122和SZU-130以及权利要求5至13中任一项的免疫靶向化合物或其药学上可接受的盐在制备抗肿瘤药物、抗病毒药物和靶向清除蛋白的药物中的用途。
  16. 化合物SZU-136-miRNA21及其类似物在制备免疫靶向RNA的药物中 的用途。
  17. 化合物SZU-179、SZU-180和SZU-181在制备抗艾滋病和抗乙肝的药物中的用途。
  18. 化合物SZU-161和SZU-162在测定小分子免疫激动剂偶联蛋白药物和细胞的偶联度中的用途。
  19. 化合物SZU-116和SZU-124在观察研究蛋白或靶向药的细胞吸收和体内分布中的用途,其中化合物SZU-116和SZU-124与蛋白或者靶向药偶联。
  20. 化合物SZU-114、SZU-117、SZU-122、SZU-127、SZU-133、SZU-138、SZU-143在制备具有免疫靶向双功能的药物中的用途,其中化合物SZU-114、SZU-117、SZU-122、SZU-127、SZU-133、SZU-138、SZU-143与靶向药或抗体偶联。
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