WO2021190581A1 - 一种含抗体药物偶联物的药物组合物及其用途 - Google Patents

一种含抗体药物偶联物的药物组合物及其用途 Download PDF

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WO2021190581A1
WO2021190581A1 PCT/CN2021/082854 CN2021082854W WO2021190581A1 WO 2021190581 A1 WO2021190581 A1 WO 2021190581A1 CN 2021082854 W CN2021082854 W CN 2021082854W WO 2021190581 A1 WO2021190581 A1 WO 2021190581A1
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antibody
pharmaceutical composition
solution
cancer
reaction
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PCT/CN2021/082854
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English (en)
French (fr)
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岳占龙
颜贞
刘洵
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江苏恒瑞医药股份有限公司
上海恒瑞医药有限公司
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Application filed by 江苏恒瑞医药股份有限公司, 上海恒瑞医药有限公司 filed Critical 江苏恒瑞医药股份有限公司
Priority to KR1020227035984A priority Critical patent/KR20220157998A/ko
Priority to EP21775069.4A priority patent/EP4129345A4/en
Priority to MX2022011770A priority patent/MX2022011770A/es
Priority to AU2021243073A priority patent/AU2021243073A1/en
Priority to CN202180014720.1A priority patent/CN115103691A/zh
Priority to JP2022557935A priority patent/JP2023518583A/ja
Priority to BR112022019073A priority patent/BR112022019073A2/pt
Priority to CA3175733A priority patent/CA3175733A1/en
Priority to US17/914,087 priority patent/US20230165969A1/en
Publication of WO2021190581A1 publication Critical patent/WO2021190581A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
    • A61K47/68—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment
    • A61K47/6801—Drug-antibody or immunoglobulin conjugates defined by the pharmacologically or therapeutically active agent
    • A61K47/6803—Drugs conjugated to an antibody or immunoglobulin, e.g. cisplatin-antibody conjugates
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    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/47—Quinolines; Isoquinolines
    • A61K31/4738—Quinolines; Isoquinolines ortho- or peri-condensed with heterocyclic ring systems
    • A61K31/4745—Quinolines; Isoquinolines ortho- or peri-condensed with heterocyclic ring systems condensed with ring systems having nitrogen as a ring hetero atom, e.g. phenantrolines
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    • A61K47/08—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing oxygen, e.g. ethers, acetals, ketones, quinones, aldehydes, peroxides
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    • A61K47/26—Carbohydrates, e.g. sugar alcohols, amino sugars, nucleic acids, mono-, di- or oligo-saccharides; Derivatives thereof, e.g. polysorbates, sorbitan fatty acid esters or glycyrrhizin
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    • A61K47/6835—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment the modifying agent being an antibody or an immunoglobulin bearing at least one antigen-binding site
    • A61K47/6851—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment the modifying agent being an antibody or an immunoglobulin bearing at least one antigen-binding site the antibody targeting a determinant of a tumour cell
    • A61K47/6855—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment the modifying agent being an antibody or an immunoglobulin bearing at least one antigen-binding site the antibody targeting a determinant of a tumour cell the tumour determinant being from breast cancer cell
    • A—HUMAN NECESSITIES
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    • A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
    • A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
    • A61K47/68—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment
    • A61K47/6835—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment the modifying agent being an antibody or an immunoglobulin bearing at least one antigen-binding site
    • A61K47/6851—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment the modifying agent being an antibody or an immunoglobulin bearing at least one antigen-binding site the antibody targeting a determinant of a tumour cell
    • A61K47/6865—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment the modifying agent being an antibody or an immunoglobulin bearing at least one antigen-binding site the antibody targeting a determinant of a tumour cell the tumour determinant being from skin, nerves or brain cancer cell
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    • A61K47/68—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment
    • A61K47/6889—Conjugates wherein the antibody being the modifying agent and wherein the linker, binder or spacer confers particular properties to the conjugates, e.g. peptidic enzyme-labile linkers or acid-labile linkers, providing for an acid-labile immuno conjugate wherein the drug may be released from its antibody conjugated part in an acidic, e.g. tumoural or environment
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    • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/19—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles lyophilised, i.e. freeze-dried, solutions or dispersions
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    • C—CHEMISTRY; METALLURGY
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    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D491/00—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
    • C07D491/22—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains four or more hetero rings
    • C—CHEMISTRY; METALLURGY
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    • C07K16/32—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against translation products of oncogenes

Definitions

  • the present disclosure belongs to the field of pharmaceutical preparations, and specifically relates to a pharmaceutical composition containing an antibody-drug conjugate and its use as an anti-cancer drug.
  • Antibody drug conjugate connects monoclonal antibodies or antibody fragments with biologically active cytotoxins through stable chemical linker compounds, making full use of the specificity of antibody binding to normal cells and tumor cell surface antigens And the high efficiency of cytotoxin, while avoiding the shortcomings of low curative effect of the former and excessive side effects of the latter.
  • ADC Antibody drug conjugate
  • the first antibody-drug conjugate in 2000 was approved by the US FDA for the treatment of acute myeloid leukemia (Drugs of the Future (2000) 25(7): 686; US4970198; US 5079233; US 5585089; US 5606040; US 5693762; US 5739116; US 5767285; US 5773001).
  • T-DM1 hematological tumors and solid tumors are relatively simple in tissue structure.
  • T-DM1 hematological tumors and solid tumors are relatively simple in tissue structure.
  • trastuzumab trade name: Herceptin
  • paclitaxel WO2005037992
  • camptothecin derivatives which have anti-tumor effects by inhibiting topoisomerase I.
  • camptothecin derivative exenotecan (chemical name: (1S,9S)-1-amino-9-ethyl-5-fluoro-2,3-dihydro-9-hydroxy-4-methyl-1H ,12H-benzo[de]pyrano[3',4':6,7]imidazo[1,2-b]quinoline-10,13(9H,15H)-dione) used in antibody drugs
  • ADC The literature of conjugate (ADC) includes WO2014057687; Clinical Cancer Research (2016) 22(20): 5097-5108; Cancer Sci (2016) 107: 1039-1046. However, further development of ADC drugs with better curative effect is still needed.
  • ADCs have a more complicated heterostructure than antibodies, and therefore pose a greater challenge to ADC preparations for therapeutic purposes.
  • the present disclosure provides a pharmaceutical composition
  • a pharmaceutical composition comprising an antibody-drug conjugate and a buffer, wherein the antibody-drug conjugate has a structure as shown in the general formula (Pc-L-Y-D):
  • Y is selected from -O-(CR a R b ) m -CR 1 R 2 -C(O)-, -O-CR 1 R 2 -(CR a R b ) m -, -O-CR 1 R 2- , -NH-(CR a R b ) m -CR 1 R 2 -C(O)- and -S-(CR a R b ) m -CR 1 R 2 -C(O)-;
  • R a and R b are the same or different, and are each independently selected from a hydrogen atom, a deuterium atom, a halogen, an alkyl group, a halogenated alkyl group, a deuterated alkyl group, an alkoxy group, a hydroxyl group, an amino group, a cyano group, a nitro group, a hydroxyalkyl group Group, cycloalkyl and heterocyclic group;
  • R a and R b together with the carbon atom to which they are attached form a cycloalkyl group or a heterocyclic group;
  • R 1 is selected from halogen, haloalkyl, deuterated alkyl, cycloalkyl, cycloalkylalkyl, alkoxyalkyl, heterocyclyl, aryl and heteroaryl;
  • R 2 is selected from hydrogen atom, halogen, haloalkyl, deuterated alkyl, cycloalkyl, cycloalkylalkyl, alkoxyalkyl, heterocyclyl, aryl and heteroaryl;
  • R 1 and R 2 together with the carbon atom to which they are attached form a cycloalkyl group or a heterocyclic group;
  • R a and R 2 together with the carbon atom to which they are connected form a cycloalkyl group or a heterocyclic group;
  • n is an integer from 0 to 4.
  • n is from 1 to 10, n is a decimal or integer;
  • Pc is an antibody or an antigen-binding fragment thereof
  • the pH of the composition is from about 4.5 to about 6.0, preferably the pH is from about 4.8 to about 5.3, and more preferably the pH is from about 5.0 to about 5.1.
  • the pH of the buffer in the pharmaceutical composition is about 4.5 to about 6.0.
  • Non-limiting examples include about 4.5, about 4.6, about 4.7, about 4.8, about 4.9, and about 5.0. , About 5.1, about 5.2, about 5.3, about 5.4, about 5.5, about 5.6, about 5.7, about 5.8, about 5.9, about 6.0, preferably about 4.8 to about 5.3, more preferably about 5.0 to about 5.1.
  • the pharmaceutical composition has a pH of 4.5 to 5.2, preferably a pH of 4.8 to 5.2, and more preferably a pH of 5.0 to 5.1.
  • the pH of the pharmaceutical composition is 5.0.
  • the pharmaceutical composition further comprises a surfactant, which may be selected from polysorbate, polysorbate 20, polysorbate 80, polyhydroxyalkylene, Triton, sodium lauryl sulfonate, laurel Sodium sulfonate, sodium octyl glycoside, lauryl-sultaine, myristyl-sultaine, linoleyl-sultaine, stearyl-sultaine, lauryl-sultain Amino acid, myristyl-sarcosine, linoleyl-sarcosine, stearyl-sarcosine, linoleyl-betaine, myristyl-betaine, cetyl-betaine, lauramide Propyl-betaine, cocaamidopropyl-betaine, linoleamidopropyl-betaine, myristamidopropyl-betaine, palmitamidopropyl-betaine, isost
  • the concentration of the surfactant in the pharmaceutical composition is from about 0.01 mg/mL to about 1.0 mg/mL. In an alternative embodiment, the concentration of the surfactant in the pharmaceutical composition is about 0.05 mg/mL to about 0.5 mg/mL, preferably about 0.1 mg/mL to about 0.3 mg/mL, about 0.2 mg/mL to about About 0.6 mg/mL, about 0.2 mg/mL to about 0.5 mg/mL, or about 0.2 mg/mL to about 0.3 mg/mL, more preferably about 0.2 mg/mL, non-limiting examples include 0.1 mg/mL , 0.15mg/mL, 0.2mg/mL, 0.25mg/mL, 0.3mg/mL, 0.35mg/mL, 0.4mg/mL, 0.45mg/mL, 0.5mg/mL, 0.6mg/mL.
  • the aforementioned pharmaceutical composition further comprises sugar.
  • the "sugar” in the present disclosure includes conventional compositions (CH 2 O) n and its derivatives, including monosaccharides, disaccharides, trisaccharides, polysaccharides, sugar alcohols, reducing sugars, non-reducing sugars, and so on.
  • the sugar can be selected from the group consisting of glucose, sucrose, trehalose, lactose, fructose, maltose, dextran, glycerol, erythritol, glycerol, arabitol, sylitol, sorbitol, mannitol, milky Disaccharides, melezitose, raffinose, mannotriose, stachyose, maltose, lactulose, maltulose, sorbitol, maltitol, lactitol, iso-maltulose, etc.
  • the preferred sugar is a non-reducing disaccharide, more preferably trehalose or sucrose, and most preferably sucrose.
  • the concentration of sugar in the aforementioned pharmaceutical composition is about 60 mg/mL to about 90 mg/mL, non-limiting examples include 60 mg/mL, 65 mg/mL, 70 mg/mL, 75 mg/mL, 80 mg/mL, 85 mg/mL, 90 mg/mL, preferably 80 mg/mL. In some embodiments, the concentration of sugar is 70 mg/mL to 90 mg/mL.
  • the concentration of the antibody-drug conjugate in the pharmaceutical composition is about 1 mg/mL to about 100 mg/mL
  • non-limiting examples include 1 mg/mL, 10 mg/mL, 11 mg/mL , 12mg/mL, 13mg/mL, 14mg/mL, 15mg/mL, 16mg/mL, 17mg/mL, 18mg/mL, 19mg/mL, 20mg/mL, 21mg/mL, 22mg/mL, 23mg/mL, 24mg /mL, 25mg/mL, 26mg/mL, 27mg/mL, 28mg/mL, 29mg/mL, 30mg/mL, 40mg/mL, 50mg/mL, 60mg/mL, 70mg/mL, 80mg/mL, 90mg/mL , 100mg/mL, preferably about 10mg/mL to about 30m
  • non-limiting examples include 20.1 mg/mL, 20.2 mg/mL, 20.3 mg/mL, 20.4 mg/mL, 20.5 mg/mL, 20.6 mg/mL, 20.7 mg/mL, 20.8 mg/mL, 20.81mg/mL, 20.82mg/mL, 20.83mg/mL, 20.84mg/mL, 20.85mg/mL, 20.86mg/mL, 20.87mg/mL, 20.88mg/mL, 20.89mg/mL, 20.9mg/mL, 20.9mg/mL, 20.91mg/mL, 20.92mg/mL, 20.93mg/mL, 20.94mg/mL, 20.95mg/mL, 20.96mg/mL, 20.97mg/mL, 20.98mg/mL, 20.99mg/mL, 21mg/mL.
  • the concentration of the antibody-drug conjugate in the pharmaceutical composition is about 10 mg/mL to about 30 mg/mL, preferably about 20 mg/mL, based on the naked antibody (ie, the antibody portion in the ADC). mL.
  • the buffer in the aforementioned pharmaceutical composition is selected from the group consisting of histidine buffer, succinate buffer and citrate buffer, preferably succinate buffer, more preferably succinic acid -Sodium succinate buffer.
  • the concentration of the buffer in the pharmaceutical composition is about 5 mM to about 50 mM, non-limiting examples include 1 mM, 5 mM, 6 mM, 7 mM, 8 mM, 9 mM, 10 mM, 11 mM, 12 mM, 13 mM, 14mM, 15mM, 16mM, 17mM, 18mM, 19mM, 20mM, 30mM, 40mM, 50mM, preferably about 5mM to about 20mM; most preferably about 10mM.
  • the drug load (n) can range from 3 to 8, 4 to 8, 5 to 7, more preferably 5.3 to 6.1 per antibody or antigen binding fragment (Pc) binding. 5.7 cytotoxic drugs. n is a decimal or integer.
  • the pharmaceutical composition comprises:
  • the pH of the pharmaceutical composition is about 4.8 to about 5.3;
  • the pharmaceutical composition comprises:
  • the pharmaceutical composition comprises:
  • the pH of the pharmaceutical composition is about 5.0 to about 5.1. In some embodiments, the pH of the pharmaceutical composition is 5.0 to 5.1.
  • -Y- is -O-(CR a R b )m-CR 1 R 2 -C(O)-;
  • R a and R b are the same or different, and are each independently selected from a hydrogen atom, a deuterium atom, a halogen, and an alkyl group;
  • R 1 is C 3-7 cycloalkylalkyl or C 3-7 cycloalkyl
  • R 2 is selected from a hydrogen atom, a halogenated alkyl group and a C 3-7 cycloalkyl group; preferably a hydrogen atom;
  • R 1 and R 2 together with the carbon atom to which they are attached form a C 3-7 cycloalkyl group
  • m 0 or 1.
  • -Y- is -O-(CH 2 )m-CR 1 R 2 -C(O)-;
  • R 1 is C 3-7 cycloalkylalkyl or C 3-7 cycloalkyl
  • R 2 is selected from a hydrogen atom, a halogenated alkyl group and a C 3-7 cycloalkyl group;
  • R 1 and R 2 together with the carbon atom to which they are attached form a C 3-7 cycloalkyl group
  • m 0 or 1.
  • -Y- is -O-(CH 2 )m-CR 1 R 2 -C(O)-;
  • R 1 is C 3-7 cycloalkylalkyl or C 3-7 cycloalkyl
  • R 2 is a hydrogen atom
  • R 1 and R 2 together with the carbon atom to which they are attached form a C 3-7 cycloalkyl group
  • m 0 or 1.
  • -Y- is -O-(CH 2 )m-CR 1 R 2 -C(O)-;
  • R 1 is C 3-7 cycloalkylalkyl or C 3-7 cycloalkyl
  • R 2 is a hydrogen atom
  • R 1 and R 2 together with the carbon atom to which they are attached form a C 3-7 cycloalkyl group
  • -Y- is selected from:
  • the O end of -Y- is connected to the joint unit L.
  • -Y- is selected from:
  • the aforementioned antibody-drug conjugate has a structure as shown in the general formula (Pc-LD 1 ):
  • R 1 is cycloalkylalkyl or cycloalkyl; preferably C 3-7 cycloalkylalkyl or C 3-7 cycloalkyl;
  • R 2 is selected from a hydrogen atom, a halogenated alkyl group and a C 3-7 cycloalkyl group; preferably a hydrogen atom;
  • R 1 and R 2 together with the carbon atom to which they are attached form a C 3-7 cycloalkyl group
  • n 0 or 1
  • n is from 1 to 10, which can be an integer or a decimal
  • Pc is an antibody or an antigen-binding fragment thereof; and L is a linker unit.
  • n is 2 to 8, which can be an integer or a decimal; preferably, it is 3 to 8, which can be an integer or a decimal.
  • the linker unit -L- is -L 1 -L 2 -L 3 -L 4 -, wherein:
  • L 1 is selected from -(succinimidyl-3-yl-N)-WC(O)-, -CH 2 -C(O)-NR 3 -WC(O)- and -C(O)-WC( O)-, wherein W is selected from C 1-8 alkyl, C 1-8 alkyl-cycloalkyl and linear heteroalkyl of 1 to 8 atoms, and the heteroalkyl contains 1 to 3 selected from N, O or S heteroatoms, wherein the C 1-8 alkyl, cycloalkyl and linear heteroalkyl are each independently optionally further selected from halogen, hydroxy, cyano, amino, alkyl, Substituted by one or more substituents of chloroalkyl, deuterated alkyl, alkoxy and cycloalkyl;
  • L 2 is selected from -NR 4 (CH 2 CH 2 O)p 1 CH 2 CH 2 C(O)-, -NR 4 (CH 2 CH 2 O)p 1 CH 2 C(O)-, -S(CH 2 ) p 1 C(O)- and a chemical bond, where p 1 is an integer from 1 to 20; L 2 is preferably a chemical bond;
  • L 3 is a peptide residue composed of 2 to 7 amino acids, wherein the amino acid is optionally further selected from halogen, hydroxyl, cyano, amino, alkyl, chloroalkyl, deuterated alkyl, alkoxy and cyclic Substituted by one or more substituents in the alkyl group;
  • L 4 is selected from -NR 5 (CR 6 R 7 ) t -, -C(O)NR 5 , -C(O)NR 5 (CH 2 ) t -and chemical bonds, wherein t is an integer from 1 to 6; L 4 is preferably -NR 5 (CR 6 R 7 )t-;
  • R 3 , R 4 and R 5 are the same or different, and are each independently selected from a hydrogen atom, an alkyl group, a halogenated alkyl group, a deuterated alkyl group, and a hydroxyalkyl group;
  • R 6 and R 7 are the same or different, and are each independently selected from a hydrogen atom, a halogen, an alkyl group, a halogenated alkyl group, a deuterated alkyl group, and a hydroxyalkyl group.
  • the linker unit L 1 is selected from -(succinimidyl-3-yl-N)-(CH 2 )s 1 -C(O)-, -(Succinimidyl-3-yl-N)-CH 2 -Cyclohexyl-C(O)-, -(Succinimidyl-3-yl-N)-(CH 2 CH 2 O)s 2- CH 2 CH 2 -C(O)-, -CH 2 -C(O)-NR 3 -(CH 2 )s 3 -C(O)- and -C(O)-(CH 2 )s 4 C( O)-, where s 1 is an integer from 2 to 8, s 2 is an integer from 1 to 3, s 3 is an integer from 1 to 8, s 4 is an integer from 1 to 8; s 1 is preferably 5.
  • the linker unit L 2 is -NR 4 (CH 2 CH 2 O)p 1 CH 2 C(O)- or a chemical bond, and p 1 is 6 to 12 Integer.
  • L 4 is -NR 5 (CR 6 R 7 )t-, R 5 is a hydrogen atom or an alkyl group, and R 6 and R 7 are the same or different, And each independently is a hydrogen atom or an alkyl group, t is 1 or 2, preferably 2; L 4 is preferably -NR 5 CR 6 R 7 -, more preferably -NHCH 2 -.
  • the linker unit -L- is -L 1 -L 2 -L 3 -L 4 -,
  • L 1 is s 1 is an integer from 2 to 8;
  • L 2 is a chemical bond
  • L 3 is a tetrapeptide residue
  • L 4 is -NR 5 (CR 6 R 7 )t-, R 5 is a hydrogen atom or an alkyl group, R 6 and R 7 are the same or different, and are each independently a hydrogen atom or an alkyl group, and t is 1 or 2.
  • the linker unit -L- is -L 1 -L 2 -L 3 -L 4 -,
  • L 1 is -(succinimidyl-3-yl-N)-CH 2 -cyclohexyl-C(O)-;
  • L 2 is -NR 4 (CH 2 CH 2 O) 9 CH 2 C(O)-;
  • L 3 is a tetrapeptide residue
  • L 4 is -NR 5 (CR 6 R 7 )t-, R 5 is a hydrogen atom or an alkyl group, R 6 and R 7 are the same or different, and are each independently a hydrogen atom or an alkyl group, and t is 1 or 2.
  • the peptide residue of L 3 is composed of one, two or more selected from phenylalanine (E), glycine (G), Amino acid residues formed by amino acids in valine (V), lysine (K), citrulline, serine (S), glutamic acid (E), and aspartic acid (N); preferably one , Two or more amino acid residues formed by amino acids selected from phenylalanine and glycine; more preferably a tetrapeptide residue; most preferably a tetrapeptide residue of GGFG (glycine-glycine-phenylalanine-glycine) base.
  • the linker unit -L- is -L 1 -L 2 -L 3 -L 4 -, and its L 1 end is bound to the antibody or its antigen The fragments are connected, and the L 4 end is connected to Y.
  • the -L-Y- is:
  • L 1 is -(succinimidyl-3-yl-N)-(CH 2 )s 1 -C(O)- or -(succinimidyl-3-yl-N)-CH 2 -cyclohexyl- C(O)-;
  • L 2 is -NR 4 (CH 2 CH 2 O)p 1 CH 2 C(O)- or a chemical bond, p 1 is an integer from 6 to 12;
  • R 4 is selected from a hydrogen atom, an alkyl group, a halogenated alkyl group, and a deuterated alkane Group and hydroxyalkyl group;
  • L 3 is the tetrapeptide residue of GGFG
  • R 1 is cycloalkylalkyl or cycloalkyl; preferably C 3-7 cycloalkylalkyl or C 3-7 cycloalkyl;
  • R 2 is selected from a hydrogen atom, a halogenated alkyl group and a C 3-7 cycloalkyl group; preferably a hydrogen atom;
  • R 1 and R 2 together with the carbon atom to which they are attached form a C 3-7 cycloalkyl group
  • R 5 is selected from a hydrogen atom or an alkyl group
  • R 6 and R 7 are the same or different, and each independently is a hydrogen atom or an alkyl group
  • s 1 is an integer from 2 to 8; preferably 5;
  • n is an integer from 0 to 4.
  • the -L-Y- is:
  • L 2 is -NR 4 (CH 2 CH 2 O) 9 CH 2 C(O)-;
  • R 4 is selected from a hydrogen atom, an alkyl group, a haloalkyl group, a deuterated alkyl group and a hydroxyalkyl group;
  • L 3 is the tetrapeptide residue of GGFG
  • R 1 is cycloalkylalkyl or cycloalkyl; preferably C 3-7 cycloalkylalkyl or C 3-7 cycloalkyl;
  • R 2 is selected from a hydrogen atom, a halogenated alkyl group and a C 3-7 cycloalkyl group; preferably a hydrogen atom;
  • R 1 and R 2 together with the carbon atom to which they are attached form a C 3-7 cycloalkyl group
  • R 5 is selected from a hydrogen atom or an alkyl group
  • R 6 and R 7 are the same or different, and each independently is a hydrogen atom or an alkyl group
  • n is an integer from 0 to 4.
  • the -L-Y- is:
  • L 2 is a chemical bond
  • L 3 is the tetrapeptide residue of GGFG
  • R 1 is cycloalkylalkyl or cycloalkyl; preferably C 3-7 cycloalkylalkyl or C 3-7 cycloalkyl;
  • R 2 is selected from a hydrogen atom, a halogenated alkyl group and a C 3-7 cycloalkyl group; preferably a hydrogen atom;
  • R 1 and R 2 together with the carbon atom to which they are attached form a C 3-7 cycloalkyl group
  • R 5 is selected from a hydrogen atom or an alkyl group
  • R 6 and R 7 are the same or different, and each independently is a hydrogen atom or an alkyl group
  • s 1 is an integer from 2 to 8; preferably 5;
  • n is an integer from 0 to 4.
  • L 1 is -(succinimidyl-3-yl-N)-(CH 2 )s 1 -C(O)- or -(succinimidyl-3-yl-N)-CH 2 -cyclohexyl- C(O)-;
  • L 2 is -NR 4 (CH 2 CH 2 O)p 1 CH 2 C(O)- or a chemical bond, p 1 is an integer from 1 to 20;
  • R 4 is selected from a hydrogen atom, an alkyl group, a halogenated alkyl group, and a deuterated alkane Group and hydroxyalkyl group;
  • L 3 is the tetrapeptide residue of GGFG
  • R 1 is cycloalkylalkyl or cycloalkyl; preferably C 3-7 cycloalkylalkyl or C 3-7 cycloalkyl;
  • R 2 is selected from a hydrogen atom, a halogenated alkyl group and a C 3-7 cycloalkyl group; preferably a hydrogen atom;
  • R 1 and R 2 together with the carbon atom to which they are attached form a C 3-7 cycloalkyl group
  • R 5 , R 6 and R 7 are the same or different, and are each independently a hydrogen atom or an alkyl group
  • s 1 is an integer from 2 to 8;
  • n is an integer from 0 to 4.
  • the -L-Y- is:
  • L 2 is a chemical bond
  • L 3 is the tetrapeptide residue of GGFG
  • R 1 is cycloalkylalkyl or cycloalkyl; preferably C 3-7 cycloalkylalkyl or C 3-7 cycloalkyl;
  • R 2 is selected from a hydrogen atom, a halogenated alkyl group and a C 3-7 cycloalkyl group; preferably a hydrogen atom;
  • R 1 and R 2 together with the carbon atom to which they are attached form a C 3-7 cycloalkyl group
  • R 5 is selected from a hydrogen atom or an alkyl group
  • R 6 and R 7 are the same or different, and each independently is a hydrogen atom or an alkyl group
  • s 1 is an integer from 2 to 8;
  • n is an integer from 0 to 4.
  • the antibody-drug conjugate has a structure as shown in the general formula (Pc-L a -YD):
  • W is selected from a C 1-8 alkyl group, a C 1-8 alkyl group-C 3-7 cycloalkyl group and a linear heteroalkyl group of 1 to 8 atoms
  • the linear heteroalkyl group contains 1 to 3 selected Heteroatoms from N, O or S
  • the C 1-8 alkyl, C 3-7 cycloalkyl and linear heteroalkyl are each independently optionally further selected from halogen, hydroxyl, cyano, One or more substituents of amino, C 1-6 alkyl, chloro C 1-6 alkyl, deuterated C 1-6 alkyl, C 1-6 alkoxy and C 3-7 cycloalkyl replace;
  • L 2 is selected from -NR 4 (CH 2 CH 2 O)p 1 CH 2 CH 2 C(O)-, -NR 4 (CH 2 CH 2 O)p 1 CH 2 C(O)-, -S(CH 2 ) p 1 C(O)- and chemical bond, wherein p 1 is an integer from 1 to 20;
  • R 4 is selected from hydrogen atom, alkyl group, haloalkyl group, deuterated alkyl group and hydroxyalkyl group;
  • L 3 is a peptide residue composed of 2 to 7 amino acid residues, wherein the amino acid residue is selected from phenylalanine (F), glycine (G), valine (V), lysine ( K), citrulline, serine (S), glutamic acid (Q), aspartic acid (D) formed by amino acid residues, and optionally further selected from halogen, hydroxyl, cyano, amino , C 1-6 alkyl, chloro C 1-6 alkyl, deuterated C 1-6 alkyl, C 1-6 alkoxy and C 3-7 cycloalkyl group are substituted by one or more replace;
  • the amino acid residue is selected from phenylalanine (F), glycine (G), valine (V), lysine ( K), citrulline, serine (S), glutamic acid (Q), aspartic acid (D) formed by amino acid residues, and optionally further selected from halogen, hydroxyl, cyano, amino , C 1-6 alkyl,
  • R 1 is a halogenated C 1-6 alkyl group or a C 3-7 cycloalkyl group
  • R 2 is selected from a hydrogen atom, a halogenated C 1-6 alkyl group and a C 3-7 cycloalkyl group;
  • R 1 and R 2 together with the carbon atom to which they are attached form a C 3-7 cycloalkyl group
  • R 5 is selected from a hydrogen atom, a C 1-6 alkyl group, a halogenated C 1-6 alkyl group, a deuterated C 1-6 alkyl group and a hydroxy C 1-6 alkyl group;
  • R 6 and R 7 are the same or different, and are each independently selected from hydrogen atom, halogen, C 1-6 alkyl, halogenated C 1-6 alkyl, deuterated C 1-6 alkyl, and hydroxy C 1-6 alkyl;
  • n 0 or 1
  • n is a decimal or integer from 3 to 8;
  • Pc is an antibody or an antigen-binding fragment thereof.
  • the antibody-drug conjugate has a structure as shown in the general formula (Pc-L b -YD):
  • s 1 is an integer from 2 to 8;
  • Pc, R 1 , R 2 , R 5 , R 6 , R 7 , m, and n are as defined in the general formula (Pc-L a -YD).
  • the -L-Y- includes, but is not limited to:
  • the aforementioned antibody-drug conjugate has the following structure:
  • Pc and n are as defined in the general formula (Pc-La-Y-D).
  • the antibody-drug conjugate has a structure shown in the following formula:
  • n 3 to 8, n is a decimal or integer
  • Pc is an antibody or an antigen-binding fragment thereof.
  • the Pc is an antibody or an antigen-binding fragment thereof, wherein the antibody is selected from a chimeric antibody, a humanized antibody or a fully human antibody; preferably a monoclonal antibody.
  • the Pc is selected from the group consisting of an anti-HER2 (ErbB2) antibody, an anti-EGFR antibody, an anti-B7-H3 antibody, an anti-c-Met antibody, an anti-HER3 (ErbB3) antibody, an anti-HER4 (ErbB4) antibody, Anti-CD20 antibody, anti-CD22 antibody, anti-CD30 antibody, anti-CD33 antibody, anti-CD44 antibody, anti-CD56 antibody, anti-CD70 antibody, anti-CD73 antibody, anti-CD105 antibody, anti-CEA antibody, anti-A33 antibody, anti-Cripto antibody, anti-EphA2 Antibodies, anti-G250 antibodies, anti-MUCl antibodies, anti-Lewis Y antibodies, anti-VEGFR antibodies, anti-GPNMB antibodies, anti-Integrin antibodies, anti-PSMA antibodies, anti-Tenascin-C antibodies, anti-SLC44A4 antibodies and anti-Mesothelin antibodies, or antigen-binding fragments thereof .
  • the antibody or antigen-binding fragment thereof in the antibody drug conjugate is selected from Trastuzumab, Pertuzumab, Nimotuzumab, Enoblituzumab, Emibetuzumab, Inotuzumab, Pinatuzumab, Brentuximab, Gemtuzumab, Bivatuzumab, Lorvotuzumab , CBR96 and Glematumamab, or antigen-binding fragments thereof.
  • the antibody-drug conjugate has a structure shown in the following formula:
  • n is a non-zero integer or decimal from 0 to 10, preferably an integer or decimal between 1-10; more preferably from 2 to 8, which can be an integer or a decimal; most preferably, it is from 3 to 8, which can be It is an integer or a decimal.
  • the antibody drug conjugate in the pharmaceutical composition has a structure shown in the following formula:
  • n is 3 to 8
  • n is a decimal or integer.
  • the present disclosure provides a pharmaceutical composition
  • a pharmaceutical composition comprising: (a) about 10 mg/mL to about 30 mg/mL of the antibody drug conjugate, (b) about 0.05 mg/mL to about 0.5 mg/mL of polysorbate Esters, (c) about 60 mg/mL to about 90 mg/mL sugar, and (d) about 5 mM to about 20 mM buffer; the composition has a pH of 4.8 to 5.2;
  • the antibody-drug conjugate has a structure shown in the following formula:
  • n is 3 to 8
  • n is a decimal or integer.
  • the present disclosure provides a pharmaceutical composition
  • a pharmaceutical composition comprising: (a) about 20 mg/mL to about 22 mg/mL antibody drug conjugate, (b) about 0.2 mg/mL polysorbate 80, (c) about 80 mg /mL of sucrose, and (d) about 10 mM succinate buffer, the pH of the pharmaceutical composition is 5.0 to 5.1;
  • the antibody-drug conjugate has a structure shown in the following formula:
  • n is 3 to 8
  • n is a decimal or integer.
  • the present disclosure also provides a freeze-dried preparation containing the antibody-drug conjugate, which is characterized in that the preparation can be reconstituted to form the above-mentioned pharmaceutical composition.
  • the present disclosure also provides a method for preparing a freeze-dried preparation containing an antibody-drug conjugate, which includes the step of freeze-drying the pharmaceutical composition as described above.
  • the freeze-drying sequentially includes the steps of pre-freezing, primary drying and secondary drying. Freeze drying is performed by freezing the preparation and then sublimating water at a temperature suitable for one-time drying. Under this condition, the product temperature is lower than the eutectic point or collapse temperature of the formulation. Generally, the temperature range of the primary drying is about -30 to 25°C (assuming that the product remains frozen during the primary drying process).
  • the size and type of the formulation, the container (for example, a glass vial) holding the sample, and the volume of the liquid determine the time required for drying, which may range from a few hours to a few days (for example, 40-60 hours).
  • the secondary drying stage can be carried out at about 0-40°C, depending on the type and size of the container and the type of protein used.
  • the secondary drying time is determined by the desired residual moisture level in the product, and usually requires at least about 5 hours.
  • the water content of the lyophilized formulation is less than about 5%, preferably less than about 3%.
  • the pressure may be the same as the pressure applied in the primary drying step.
  • the pressure of the secondary drying is lower than that of the primary drying. Freeze-drying conditions can vary with the formulation and vial size.
  • the freeze-drying procedure is as follows: the pre-freezing temperature is -5°C or -45°C, and the primary drying temperature is -20°C, The degree of vacuum is 10Pa, the temperature of the secondary drying is 25°C, and the degree of vacuum is 1Pa.
  • the lyophilized formulation is stable at 2-8°C for at least 3 months, at least 6 months, at least 12 months, at least 18 months, or at least 24 months. In some embodiments, the lyophilized formulation is stable at 40°C for at least 7 days, at least 14 days, or at least 28 days.
  • the present disclosure also provides a freeze-dried preparation containing the antibody-drug conjugate, which is obtained by freeze-drying the pharmaceutical composition containing the anti-HER2 antibody-drug conjugate as described above.
  • the present disclosure also provides a reconstitution solution containing an antibody-drug conjugate, characterized in that the reconstitution solution is obtained by reconstitution of the lyophilized preparation as described above.
  • the present disclosure also provides a method for preparing the above-mentioned reconstituted solution, which includes the step of reconstituted the aforementioned lyophilized preparation, and the solution used for the reconstitution is selected from, but not limited to, water for injection, physiological saline or glucose solution.
  • the reconstitution solution contains the following components:
  • the reconstitution solution contains the following components:
  • the present disclosure also provides a product, which includes a container filled with the above-mentioned pharmaceutical composition, lyophilized preparation or reconstituted solution.
  • the container is a neutral borosilicate glass control injection bottle.
  • the present disclosure also provides the application of the aforementioned pharmaceutical composition, lyophilized preparation or reconstituted solution or product in the preparation of drugs for the treatment or prevention of tumors.
  • the present disclosure also provides methods for treating diseases, including providing the aforementioned pharmaceutical composition or lyophilized preparation or reconstituted solution or product.
  • the present disclosure also provides the aforementioned pharmaceutical composition, or lyophilized preparation, or reconstituted solution, or product as a medicament.
  • the medicament is used for the treatment or prevention of tumor diseases.
  • the disease or tumor is a cancer related to the expression of HER2, HER3, B7H3 or EGFR.
  • the cancer is selected from breast cancer, ovarian cancer, cervical cancer, uterine cancer, prostate cancer, kidney cancer, urethral cancer, bladder cancer, liver cancer, stomach cancer, endometrial cancer, salivary gland cancer, esophagus Cancer, melanoma, glioma, neuroblastoma, sarcoma, lung cancer, colon cancer, rectal cancer, colorectal cancer, leukemia, bone cancer, skin cancer, thyroid cancer, pancreatic cancer, and lymphoma.
  • the present disclosure provides a pharmaceutical composition that is more conducive to production and administration and has stable performance.
  • the pharmaceutical composition described in the present disclosure includes an antibody drug conjugate and a buffer.
  • Antibody drug conjugate connects antibodies or antibody fragments with biologically active cytotoxins or small molecule drugs with cell-killing activity through a stable chemical linker compound, making full use of antibodies to tumors. Cell-specific or highly expressed antigen binding specificity and high efficiency of cytotoxicity, avoiding toxic side effects on normal cells. Compared with traditional chemotherapy drugs in the past, antibody-drug conjugates can accurately bind tumor cells and reduce the impact on normal cells.
  • Buffering agent refers to a buffering agent that withstands changes in pH through the action of its acid-base conjugated component.
  • buffers that control the pH in an appropriate range include acetate, succinate, gluconate, histidine, oxalate, lactate, phosphate, citrate, tartrate, and fumaric acid. Salt, glycylglycine and other organic acid buffers.
  • Hetidine salt buffer is a buffer containing histidine ions.
  • the histidine salt buffer include histidine-hydrochloride, histidine-acetate, histidine-phosphate, histidine-sulfate and other buffering agents, preferably histidine-acetate Buffer, histidine-acetate buffer is prepared from histidine and acetic acid, and histidine hydrochloride buffer is prepared from histidine and hydrochloric acid.
  • citrate buffer is a buffer that includes citrate ions.
  • citrate buffers include citrate-sodium citrate, citrate-potassium citrate, citrate-calcium citrate, citrate-magnesium citrate, and the like.
  • the preferred citrate buffer is citrate-sodium citrate.
  • succinate buffer is a buffer that includes succinate ions.
  • succinate buffers include succinate-sodium succinate, succinate-potassium succinate, succinate-succinate calcium salt, and the like.
  • the preferred succinate buffer is succinate-sodium succinate.
  • the succinic acid-sodium succinate may be prepared from succinic acid and sodium hydroxide, or prepared from succinic acid and sodium succinate.
  • Phosphate buffer is a buffer that includes phosphate ions.
  • examples of the phosphate buffer include disodium hydrogen phosphate-sodium dihydrogen phosphate, disodium hydrogen phosphate-potassium dihydrogen phosphate, disodium hydrogen phosphate-citric acid, and the like.
  • the preferred phosphate buffer is disodium hydrogen phosphate-sodium dihydrogen phosphate.
  • Acetate buffer is a buffer including acetate ions.
  • acetate buffers include acetic acid-sodium acetate, histidine acetate, acetic acid-potassium acetate, calcium acetate acetate, acetic acid-magnesium acetate, and the like.
  • the preferred acetate buffer is acetic acid-sodium acetate.
  • “Pharmaceutical composition” means a mixture containing one or more of the antibody-drug conjugates described herein or their physiologically/pharmaceutically acceptable salts or prodrugs and other chemical components, such as physiological/ Pharmaceutically acceptable carriers and excipients.
  • the purpose of the pharmaceutical composition is to maintain the stability of the active ingredient of the antibody, promote the administration to the organism, and facilitate the absorption of the active ingredient to exert its biological activity.
  • the pharmaceutical composition described in this disclosure is in the form of a solution, and unless otherwise specified, the solvent therein is all water.
  • “Lyophilized preparation” means a pharmaceutical composition in liquid or solution form or a preparation or pharmaceutical composition obtained after a liquid or solution preparation has been subjected to a vacuum freeze-drying step.
  • the terms “about” and “approximately” mean that the index value is within the acceptable error range of the specific value determined by a person of ordinary skill in the art, and the value partly depends on how it is measured or determined (ie, the limit of the measurement system). For example, in every practice in the art, “about” can mean within one or more than one standard deviation. Alternatively, “about” or “substantially comprising” can mean up to 20% of the range. Furthermore, especially for biological systems or processes, the term can mean at most an order of magnitude or at most 5 times the value. Unless otherwise stated, when a specific value appears in this application and claims, the meaning of "about” or “substantially comprising” should be assumed to be within the acceptable error range of the specific value.
  • the pharmaceutical composition described in the present disclosure can achieve a stable effect: the antibody drug conjugate therein basically retains its physical stability and/or chemical stability and/or biological activity after storage, Preferably, the pharmaceutical composition substantially retains its physical and chemical stability and its biological activity after storage.
  • the shelf life is generally selected based on the predetermined shelf life of the pharmaceutical composition.
  • analytical techniques for measuring protein stability which can measure the stability after storage at a selected temperature for a selected period of time.
  • a stable formulation is a formulation in which no significant changes are observed under the following conditions: storage at refrigerated temperature (2-8°C) for at least 3 months, preferably 6 months, more preferably 1 year, and even more preferably up to 2 years .
  • stable liquid preparations include liquid preparations that exhibit desired characteristics after being stored at a temperature of 25°C for a period of time including 1 month, 3 months, and 6 months.
  • a typical example of stability measured by SEC-HPLC, usually no more than about 10%, preferably no more than about 5% of antibody monomers aggregate or degrade. Through visual analysis, the preparation is pale yellow, almost colorless, clear liquid or colorless, or clear to slightly milky white. The concentration, pH and osmolality of the preparation have no more than ⁇ 10% change. A reduction of not more than about 10%, preferably not more than about 5% is generally observed. Generally, no more than about 10%, preferably no more than about 5% of aggregates are formed.
  • the antibody-drug conjugate does not show a significant increase in aggregation or precipitation And/or denaturation, then the antibody-drug conjugate "retains its physical stability" in the pharmaceutical formulation. Changes in protein conformation can be evaluated by fluorescence spectroscopy (which determines the tertiary structure of the protein) and by FTIR spectroscopy (which determines the secondary structure of the protein).
  • the antibody drug conjugate does not show a significant chemical change, then the antibody "retains its chemical stability" in the drug formulation.
  • chemical stability can be assessed.
  • Degradation processes that often change the chemical structure of proteins include hydrolysis or truncation (evaluated by methods such as size exclusion chromatography and CE-SDS), oxidation (by methods such as peptide mapping combined with mass spectrometry or MALDI/TOF/MS, etc.) Method to evaluate), deamidation (evaluated by methods such as ion exchange chromatography, capillary isoelectric focusing, peptide mapping, isoaspartic acid measurement, etc.) and isomerization (by measuring isoaspartic acid content, Peptide mapping etc. to evaluate).
  • the antibody-drug conjugate at a given time is within a predetermined range of the biological activity exhibited when the pharmaceutical preparation is prepared, then the antibody-drug conjugate "retains its biological activity" in the pharmaceutical preparation.
  • the "antibody” mentioned in the present disclosure refers to immunoglobulins.
  • a complete antibody is a tetrapeptide chain structure composed of two identical heavy chains and two identical light chains connected by interchain disulfide bonds.
  • the amino acid composition and sequence of the constant region of the immunoglobulin heavy chain are different, so their antigenicity is also different.
  • immunoglobulins can be divided into five categories, or isotypes of immunoglobulins, namely IgM, IgD, IgG, IgA, and IgE.
  • the corresponding heavy chains are ⁇ chain, ⁇ chain, and ⁇ chain. , ⁇ chain, and ⁇ chain.
  • IgG can be divided into IgG1, IgG2, IgG3, and IgG4.
  • the light chain is divided into a kappa chain or a lambda chain by the difference of the constant region.
  • Each of the five types of Ig can have a kappa chain or a lambda chain.
  • the antibodies described in the present disclosure are preferably specific antibodies against cell surface antigens on target cells.
  • Non-limiting examples are the following antibodies: anti-HER2 (ErbB2) antibody, anti-EGFR antibody, anti-B7-H3 antibody, anti-c- Met antibody, anti-HER3 (ErbB3) antibody, anti-HER4 (ErbB4) antibody, anti-CD20 antibody, anti-CD22 antibody, anti-CD30 antibody, anti-CD33 antibody, anti-CD44 antibody, anti-CD56 antibody, anti-CD70 antibody, anti-CD73 antibody, anti CD105 antibody, anti-CEA antibody, anti-A33 antibody, anti-Cripto antibody, anti-EphA2 antibody, anti-G250 antibody, anti-MUCl antibody, anti-Lewis Y antibody, anti-VEGFR antibody, anti-GPNMB antibody, anti-Integrin antibody, anti-PSMA antibody, anti-Tenascin -C antibody, anti-SLC44A4 antibody or anti-Mesothelin antibody; preferably Trastuzumab (Trastuzumab, trade name Herceptin), Pert
  • the sequence of about 110 amino acids near the N-terminus of the antibody heavy and light chains varies greatly and is a variable region (Fv region); the remaining amino acid sequences near the C-terminus are relatively stable and are a constant region.
  • the variable region includes 3 hypervariable regions (HVR) and 4 relatively conserved framework regions (FR). Three hypervariable regions determine the specificity of the antibody, also known as complementarity determining regions (CDR).
  • CDR complementarity determining regions
  • Each light chain variable region (LCVR) and heavy chain variable region (HCVR) is composed of 3 CDR regions and 4 FR regions.
  • the sequence from the amino terminus to the carboxy terminus is: FR1, CDR1, FR2, CDR2, FR3, CDR3, FR4.
  • the 3 CDR regions of the light chain refer to LCDR1, LCDR2, and LCDR3; the 3 CDR regions of the heavy chain refer to HCDR1, HCDR2, and HCDR3.
  • the number and position of the CDR amino acid residues of the LCVR region and the HCVR region of the antibody or antigen-binding fragment described in the present disclosure comply with the known Kabat numbering rules (LCDR1-3, HCDR1-3).
  • the antibody light chain described in the present disclosure may further include a light chain constant region, and the light chain constant region includes human or murine ⁇ , ⁇ chains or variants thereof.
  • the antibody heavy chain described in the present disclosure may further comprise a heavy chain constant region, and the heavy chain constant region comprises human or murine IgG1, IgG2, IgG3, IgG4 or variants thereof.
  • the antibodies of the present disclosure include murine antibodies, chimeric antibodies, and humanized antibodies, preferably humanized antibodies.
  • murine-derived antibody in the present disclosure refers to the preparation of antibodies with mice based on knowledge and skills in the art. During preparation, a test subject is injected with a specific antigen, and then hybridomas expressing antibodies with desired sequences or functional properties are isolated.
  • chimeric antibody refers to an antibody formed by fusing the variable region of a murine antibody with the constant region of a human antibody, which can reduce the immune response induced by the murine antibody.
  • To establish a chimeric antibody it is necessary to first establish a hybridoma secreting murine-derived specific monoclonal antibodies, and then clone the variable region genes from the mouse hybridoma cells, and then clone the constant region genes of the human antibody as needed, and convert the mouse variable region
  • the gene and the human constant region gene are connected to form a chimeric gene and then inserted into a human vector, and finally the chimeric antibody molecule is expressed in a eukaryotic industrial system or a prokaryotic industrial system.
  • humanized antibody also known as CDR-grafted antibody, refers to the transplantation of mouse CDR sequences into the human antibody variable region framework, that is, different types of human germlines The antibody produced in the antibody framework sequence. It can overcome the strong heterogeneous reaction induced by the chimeric antibody because it carries a large amount of mouse protein components.
  • framework sequences can be obtained from public DNA databases or published references that include germline antibody gene sequences.
  • the germline DNA sequences of human heavy chain and light chain variable region genes can be obtained in the "VBase" human germline sequence database, and can be found in Kabat, E.A. et al., 1991 Sequences of Proteins of Immunological Interest, 5th edition.
  • human antibody variable region framework sequence can be subjected to minimal reverse mutations or back mutations to maintain activity.
  • the humanized antibodies of the present disclosure also include humanized antibodies that are further subjected to affinity maturation for CDR by phage display.
  • naked antibody refers to an antibody that is not conjugated to a heterologous moiety (such as a cytotoxic moiety) or a radioactive label.
  • the “antigen-binding fragment of an antibody” mentioned in the present disclosure may refer to Fab fragments, Fab' fragments, F(ab') 2 fragments, and Fv fragments that bind to antigens and scFv fragments that have antigen-binding activity.
  • Fv fragments contain antibody heavy chains. Variable region and light chain variable region, but no constant region, and the smallest antibody fragment with all antigen binding sites.
  • Fv antibody also contains a polypeptide linker between the VH and VL domains, and can form an antigen Combine the required structure. Different linkers can also be used to connect the variable regions of two antibodies into a polypeptide chain, which is called single chain antibody or single chain Fv (sFv).
  • antigen-binding site in the present disclosure refers to a continuous or discontinuous three-dimensional site on an antigen that is recognized by the antibody or antigen-binding fragment of the present disclosure.
  • ADCC antibody-dependent cell-mediated cytotoxicity, which means that cells expressing Fc receptors are directly killed by recognizing the Fc segment of antibodies and are coated with antibodies.
  • the target cell The ADCC effector function of antibodies can be reduced or eliminated by modifying the Fc section of IgG.
  • the modification refers to mutations in the constant region of the heavy chain of the antibody, such as N297A, L234A, L235A selected from IgG1; IgG2/4 chimera, and F234A/L235A mutation of IgG4.
  • the “mutation” in the mutant sequence described in this disclosure includes but is not limited to "back mutation", “conservative modification” or “conservative substitution or substitution”.
  • the “conservative modification” or “conservative substitution or substitution” mentioned in this disclosure refers to the substitution of other amino acids in proteins with similar characteristics (such as charge, side chain size, hydrophobicity/hydrophilicity, main chain conformation and rigidity, etc.)
  • the amino acids that make it possible to make frequent changes without changing the biological activity of the protein are known that, generally speaking, a single amino acid substitution in a non-essential region of a polypeptide does not substantially change the biological activity (see, for example, Watson et al. (1987) Molecular Biology of the Gene, The Benjamin/Cummings Pub. Co., Page 224, (4th edition)).
  • the substitution of amino acids with similar structure or function is unlikely to disrupt biological activity.
  • the "mutated sequence” mentioned in the present disclosure refers to the nucleotide sequence and/or amino acid sequence of the present disclosure when the nucleotide sequence and/or amino acid sequence of the present disclosure is subjected to mutation modification such as appropriate substitutions, insertions, or deletions.
  • the amino acid sequence has a nucleotide sequence and/or amino acid sequence with different percent sequence identity.
  • the sequence identity described in this disclosure may be at least 85%, 90% or 95%, preferably at least 95%. Non-limiting examples include 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99 %, 100%. Sequence comparison and determination of the percent identity between two sequences can be performed through the default settings of the BLASTN/BLASTP algorithm available on the National Center For Biotechnology Institute website.
  • linker unit or “linking fragment” or “linking unit” refers to a chemical structure fragment or bond that is connected to an antibody or its antigen-binding fragment at one end and a drug at the other end. It can also be connected to other linkers before being connected to the antibody or drug. Connected.
  • the preferred scheme of the present disclosure is represented as L and L 1 to L 4 , wherein the L 1 end is connected to the antibody, and the L 4 end is connected to the structural unit Y and then connected to the compound or toxin.
  • Linkers including extensions, spacers and amino acid units, can be synthesized by methods known in the art, such as those described in US2005-0238649A1.
  • the linker may be a "cleavable linker" that facilitates the release of the drug in the cell.
  • acid-labile linkers such as hydrazone
  • protease-sensitive linkers such as peptidase-sensitive linkers
  • light-labile linkers dimethyl linkers
  • disulfide-containing linkers Chargei et al., Cancer Research 52:127-131
  • the engineered antibodies or antigen-binding fragments of the present disclosure can be prepared and purified by conventional methods.
  • the cDNA sequences encoding the heavy and light chains can be cloned and recombined into a GS expression vector.
  • the recombinant immunoglobulin expression vector can be stably transfected into CHO cells.
  • mammalian expression systems can lead to glycosylation of antibodies, especially in the highly conserved N-terminal sites of the Fc region.
  • Positive clones are expanded in the serum-free medium of the bioreactor to produce antibodies.
  • the culture medium from which the antibody is secreted can be purified by conventional techniques. For example, use A or G Sepharose FF column with adjusted buffer for purification.
  • the bound antibody was eluted by the PH gradient method, and the antibody fragment was detected by SDS-PAGE and collected.
  • the antibody can be filtered and concentrated by conventional methods. Soluble mixtures and polymers can also be removed by conventional methods, such as molecular sieves and ion exchange. The resulting product needs to be frozen immediately, such as -70°C, or lyophilized.
  • alkyl refers to a saturated aliphatic hydrocarbon group, which is a straight or branched chain group containing 1 to 20 carbon atoms, preferably an alkyl group containing 1 to 12 carbon atoms, more preferably containing 1 to 10 carbons The most preferred is an alkyl group containing 1 to 6 carbon atoms.
  • Non-limiting examples include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, sec-butyl, n-pentyl, 1,1-dimethylpropyl, 1 ,2-Dimethylpropyl, 2,2-Dimethylpropyl, 1-ethylpropyl, 2-methylbutyl, 3-methylbutyl, n-hexyl, 1-ethyl-2- Methylpropyl, 1,1,2-trimethylpropyl, 1,1-dimethylbutyl, 1,2-dimethylbutyl, 2,2-dimethylbutyl, 1,3 -Dimethylbutyl, 2-ethylbutyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 2,3-dimethylbutyl, n-heptyl, 2 -Methylhexyl, 3-methylhexyl, 4-methylhe
  • lower alkyl groups containing 1 to 6 carbon atoms More preferred are lower alkyl groups containing 1 to 6 carbon atoms.
  • Non-limiting examples include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, secondary Butyl, n-pentyl, 1,1-dimethylpropyl, 1,2-dimethylpropyl, 2,2-dimethylpropyl, 1-ethylpropyl, 2-methylbutyl , 3-methylbutyl, n-hexyl, 1-ethyl-2-methylpropyl, 1,1,2-trimethylpropyl, 1,1-dimethylbutyl, 1,2-di Methylbutyl, 2,2-dimethylbutyl, 1,3-dimethylbutyl, 2-ethylbutyl, 2-methylpentyl, 3-methylpentyl, 4-methyl Pentyl, 2,3-dimethylbutyl
  • Alkyl groups may be substituted or unsubstituted. When substituted, substituents may be substituted at any available attachment point.
  • the substituents are preferably one or more of the following groups, which are independently selected from alkanes Group, alkenyl, alkynyl, alkoxy, alkylthio, alkylamino, halogen, mercapto, hydroxyl, nitro, cyano, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, cycloalkane Oxy, heterocycloalkoxy, cycloalkylthio, heterocycloalkylthio, oxo.
  • heteroalkyl refers to an alkyl group containing one or more heteroatoms selected from N, O or S, wherein the alkyl group is as defined above.
  • alkylene refers to a saturated linear or branched aliphatic hydrocarbon group, which has a residue derived from the removal of two hydrogen atoms from the same carbon atom or two different carbon atoms of the parent alkane, which contains 1 A straight or branched chain group having to 20 carbon atoms, preferably having 1 to 12 carbon atoms, more preferably an alkylene group having 1 to 6 carbon atoms.
  • Non-limiting examples of alkylene include, but are not limited to, methylene (-CH 2 -), 1,1-ethylene (-CH(CH 3 )-), 1,2-ethylene (-CH 2 -) CH 2 )-, 1,1-propylene (-CH(CH 2 CH 3 )-), 1,2-propylene (-CH 2 CH(CH 3 )-), 1,3-propylene (-CH 2 CH 2 CH 2 -), 1,4-butylene (-CH 2 CH 2 CH 2 CH 2 -) and 1,5-butylene (-CH 2 CH 2 CH 2 CH 2 CH 2 -) Wait.
  • the alkylene group may be substituted or unsubstituted. When substituted, the substituent may be substituted at any available point of attachment.
  • the substituent is preferably independently optionally selected from alkyl, alkenyl, alkynyl , Alkoxy, alkylthio, alkylamino, halogen, mercapto, hydroxyl, nitro, cyano, cycloalkyl, heterocyclic, aryl, heteroaryl, cycloalkoxy, heterocycloalkoxy , Cycloalkylthio, heterocycloalkylthio and oxo groups are substituted by one or more substituents.
  • alkoxy refers to -O- (alkyl) and -O- (unsubstituted cycloalkyl), where the definition of alkyl or cycloalkyl is as described above.
  • alkoxy groups include: methoxy, ethoxy, propoxy, butoxy, cyclopropoxy, cyclobutoxy, cyclopentyloxy, cyclohexyloxy.
  • the alkoxy group may be optionally substituted or unsubstituted.
  • the substituent is preferably one or more of the following groups, which are independently selected from alkyl, alkenyl, alkynyl, alkoxy, alkane Thio, alkylamino, halogen, mercapto, hydroxy, nitro, cyano, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, cycloalkoxy, heterocycloalkoxy, cycloalkylthio , Heterocycloalkylthio.
  • cycloalkyl refers to a saturated or partially unsaturated monocyclic or polycyclic cyclic hydrocarbon substituent.
  • the cycloalkyl ring contains 3 to 20 carbon atoms, preferably 3 to 12 carbon atoms, more preferably 3 to 10 Carbon atoms, most preferably 3 to 7 carbon atoms.
  • Non-limiting examples of monocyclic cycloalkyl groups include cyclopropyl, cyclobutyl, cyclopentyl, cyclopentenyl, cyclohexyl, cyclohexenyl, cyclohexadienyl, cycloheptyl, cycloheptatriene Groups, cyclooctyl, etc.; polycyclic cycloalkyls include spiro, fused, and bridged cycloalkyls.
  • heterocyclyl refers to a saturated or partially unsaturated monocyclic or polycyclic cyclic hydrocarbon substituent containing 3 to 20 ring atoms, one or more of which is selected from nitrogen, oxygen or S(O) m (where m is an integer of 0 to 2) heteroatoms, but does not include the ring part of -OO-, -OS- or -SS-, and the remaining ring atoms are carbon. It preferably contains 3 to 12 ring atoms, of which 1 to 4 are heteroatoms; more preferably, the cycloalkyl ring contains 3 to 10 ring atoms.
  • Non-limiting examples of monocyclic heterocyclic groups include pyrrolidinyl, piperidinyl, piperazinyl, morpholinyl, thiomorpholinyl, homopiperazinyl, and the like.
  • Polycyclic heterocyclic groups include spiro, fused, and bridged heterocyclic groups.
  • spiroheterocyclic group refers to a polycyclic heterocyclic group that shares one atom (called a spiro atom) between 5- to 20-membered monocyclic rings, in which one or more ring atoms are selected from nitrogen, oxygen or S(O ) Heteroatoms of m (where m is an integer of 0 to 2), and the remaining ring atoms are carbon. It can contain one or more double bonds, but none of the rings have a fully conjugated ⁇ -electron system. It is preferably 6 to 14 yuan, more preferably 7 to 10 yuan.
  • the spiro heterocyclic group is classified into a single spiro heterocyclic group, a dispiro heterocyclic group or a polyspiro heterocyclic group, preferably a single spiro heterocyclic group and a dispiro heterocyclic group. More preferably, it is a 4-membered/4-membered, 4-membered/5-membered, 4-membered/6-membered, 5-membered/5-membered, or 5-membered/6-membered monospiro heterocyclic group.
  • Non-limiting examples of spiroheterocyclic groups include:
  • fused heterocyclic group refers to a 5- to 20-membered polycyclic heterocyclic group in which each ring in the system shares an adjacent pair of atoms with other rings in the system.
  • One or more rings may contain one or more Double bond, but none of the rings have a fully conjugated ⁇ -electron system, where one or more of the ring atoms are heteroatoms selected from nitrogen, oxygen or S(O) m (where m is an integer from 0 to 2), and the rest of the ring
  • the atom is carbon. It is preferably 6 to 14 yuan, more preferably 7 to 10 yuan.
  • bicyclic, tricyclic, tetracyclic or polycyclic fused heterocyclic groups preferably bicyclic or tricyclic, more preferably 5-membered/5-membered or 5-membered/6-membered bicyclic fused heterocyclic group.
  • fused heterocyclic groups include:
  • bridged heterocyclic group refers to a 5- to 14-membered polycyclic heterocyclic group with any two rings sharing two atoms that are not directly connected. It may contain one or more double bonds, but none of the rings has a complete common A conjugated ⁇ -electron system in which one or more ring atoms are heteroatoms selected from nitrogen, oxygen or S(O) m (where m is an integer of 0 to 2), and the remaining ring atoms are carbon. It is preferably 6 to 14 yuan, more preferably 7 to 10 yuan.
  • bridged heterocyclic groups include:
  • the heterocyclyl ring may be fused to an aryl, heteroaryl or cycloalkyl ring, wherein the ring connected to the parent structure is a heterocyclic group, non-limiting examples of which include:
  • the heterocyclic group may be optionally substituted or unsubstituted.
  • the substituent is preferably one or more of the following groups, which are independently selected from alkyl, alkenyl, alkynyl, alkoxy, alkane Thio, alkylamino, halogen, mercapto, hydroxy, nitro, cyano, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, cycloalkoxy, heterocycloalkoxy, cycloalkylthio , Heterocycloalkylthio, oxo.
  • aryl refers to a 6 to 14-membered all-carbon monocyclic or fused polycyclic (that is, rings sharing adjacent pairs of carbon atoms) with a conjugated ⁇ -electron system, preferably 6 to 10 members, such as benzene And naphthyl, preferably phenyl.
  • the aryl ring may be fused on a heteroaryl, heterocyclic or cycloalkyl ring, wherein the ring connected to the parent structure is an aryl ring, and non-limiting examples thereof include:
  • the aryl group may be substituted or unsubstituted.
  • the substituent is preferably one or more of the following groups, which are independently selected from alkyl, alkenyl, alkynyl, alkoxy, alkylthio, Alkylamino, halogen, mercapto, hydroxyl, nitro, cyano, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, cycloalkoxy, heterocycloalkoxy, cycloalkylthio, heterocycle Alkylthio.
  • heteroaryl refers to a heteroaromatic system containing 1 to 4 heteroatoms and 5 to 14 ring atoms, where the heteroatoms are selected from oxygen, sulfur, and nitrogen.
  • Heteroaryl groups are preferably 5 to 10 members, more preferably 5 or 6 members, such as furyl, thienyl, pyridyl, pyrrolyl, N-alkylpyrrolyl, pyrimidinyl, pyrazinyl, imidazolyl, tetrakis Azole and so on.
  • the heteroaryl ring may be fused to an aryl, heterocyclic or cycloalkyl ring, wherein the ring connected to the parent structure is a heteroaryl ring, non-limiting examples of which include:
  • Heteroaryl groups may be optionally substituted or unsubstituted.
  • the substituents are preferably one or more of the following groups, which are independently selected from alkyl, alkenyl, alkynyl, alkoxy, alkane Thio, alkylamino, halogen, mercapto, hydroxy, nitro, cyano, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, cycloalkoxy, heterocycloalkoxy, cycloalkylthio , Heterocycloalkylthio.
  • amino protecting group is to keep the amino group unchanged when other parts of the molecule react, and to protect the amino group with a group that is easy to remove.
  • Non-limiting examples include 9-fluorenylmethyloxycarbonyl, tert-butoxycarbonyl, acetyl, benzyl, allyl, p-methoxybenzyl, and the like. These groups may be optionally substituted with 1-3 substituents selected from halogen, alkoxy or nitro.
  • the amino protecting group is preferably 9-fluorenylmethyloxycarbonyl.
  • cycloalkylalkyl refers to an alkyl group substituted with one or more cycloalkyl groups, preferably with a cycloalkyl group, where alkyl is as defined above and where cycloalkyl is as defined above.
  • haloalkyl refers to an alkyl group substituted with one or more halogens, where the alkyl group is as defined above.
  • deuterated alkyl refers to an alkyl group substituted with one or more deuterium atoms, where the alkyl group is as defined above.
  • hydroxy refers to the -OH group.
  • halogen refers to fluorine, chlorine, bromine or iodine.
  • amino refers to -NH 2 .
  • nitro refers to -NO 2 .
  • Substituted refers to one or more hydrogen atoms in the group, preferably up to 5, more preferably 1 to 3 hydrogen atoms, independently of each other, substituted with a corresponding number of substituents. It goes without saying that the substituents are only in their possible chemical positions, and those skilled in the art can determine (by experiment or theory) possible or impossible substitutions without too much effort. For example, an amino group or a hydroxyl group having free hydrogen may be unstable when combined with a carbon atom having an unsaturated (e.g., olefinic) bond.
  • drug loading refers to the average number of cytotoxic drugs loaded on each antibody or antigen-binding fragment in the antibody-drug conjugate molecule. It can also be expressed as the ratio of drug volume to antibody volume. Drug loading The amount can range from 0-12 per antibody or antigen-binding fragment (Pc), preferably 1-10, more preferably 3-8, most preferably 5.3-6.1 cytotoxic drugs. In the embodiment of the present disclosure, the drug loading is expressed as n, which can also be referred to as a DAR (Drug-antibody Ratio) value, which can be exemplified by 1, 2, 3, 4, 5, 6, 7, 8, 9. , The average of 10. Conventional methods such as ultraviolet-visible spectroscopy (UV-Vis), hydrophobic chromatography (HIC) mass spectrometry, ELISA test and HPLC characteristics can be used to identify the average number of drugs per ADC molecule after the coupling reaction.
  • UV-Vis ultraviolet-visible spectroscopy
  • HIC hydrophobic chromatography
  • HPLC HPLC characteristics
  • cytotoxic drugs including:
  • carrier is used for the drugs of the present disclosure, and refers to a system that can change the way the drug enters the human body and its distribution in the body, control the release rate of the drug, and deliver the drug to the targeted organ.
  • the drug carrier release and targeting system can reduce drug degradation and loss, reduce side effects, and improve bioavailability.
  • polymer surfactants that can be used as carriers can self-assemble to form various forms of aggregates due to their unique amphiphilic structure. Preferred examples are micelles, microemulsions, gels, liquid crystals, vesicles, etc. . These aggregates have the ability to contain drug molecules and at the same time have good permeability to the membrane, and can be used as excellent drug carriers.
  • administering when applied to animals, humans, experimental subjects, cells, tissues, organs, or biological fluids refer to exogenous drugs, therapeutic agents, diagnostic agents or compositions that interact with animals, humans, and recipients. Contact with subjects, cells, tissues, organs or biological fluids.
  • administering can refer to, for example, treatment, pharmacokinetics, diagnosis, research, and experimental methods.
  • the treatment of cells includes contact between reagents and cells, and contact between reagents and fluids.
  • administering also mean the treatment of, for example, cells by reagents, diagnostics, binding compositions, or by another cell in vitro and ex vivo.
  • Treatment when applied to human, veterinary or research subjects, refers to therapeutic treatment, preventive or preventive measures, research and diagnostic applications.
  • Treatment means administering an internal or external therapeutic agent, such as a composition containing any one of the binding compounds of the present disclosure, to a patient who has one or more disease symptoms, and the therapeutic agent is known to have Therapeutic effect.
  • the therapeutic agent is administered in an amount effective to alleviate one or more symptoms of the disease in the treated patient or population, so as to induce the regression of such symptoms or inhibit the development of such symptoms to any clinically measurable degree.
  • the amount of the therapeutic agent effective to alleviate the symptoms of any particular disease can vary depending on various factors, such as the patient's disease state, age, and weight, and the ability of the drug to produce the desired therapeutic effect in the patient.
  • any clinical testing methods commonly used by doctors or other professional health care professionals to evaluate the severity or progression of the symptoms it can be evaluated whether the symptoms of the disease have been alleviated.
  • the embodiments of the present disclosure may be ineffective in alleviating the symptoms of each target disease, according to any statistical test methods known in the art such as Student's t test, chi-square test, Mann and Whitney's U test, Kruskal-Wallis test (H test), Jonckheere-Terpstra test, and Wilcoxon test determined that it should reduce the symptoms of the target disease in a statistically significant number of patients.
  • an "effective amount” includes an amount sufficient to improve or prevent the symptoms or conditions of a medical disease.
  • An effective amount also means an amount sufficient to allow or facilitate diagnosis.
  • the effective amount for a particular patient or veterinary subject may vary depending on the following factors: for example, the condition to be treated, the patient's general health, the method of administration and dosage, and the severity of side effects.
  • the effective amount can be the maximum dose or dosing schedule that avoids significant side effects or toxic effects.
  • Replacement refers to the replacement of the solvent system that dissolves the antibody protein.
  • the high salt or hypertonic solvent system containing the antibody protein is replaced by physical manipulation using a buffer system of a stable formulation, so that the antibody protein exists in the stable formulation.
  • the so-called physical operation methods include but are not limited to ultrafiltration, dialysis or centrifugation followed by reconstitution.
  • FIG 1A Plasma stability test results of ADC-19 of the present disclosure.
  • FIG. 1B Plasma stability test results of ADC-18 of the present disclosure.
  • Figure 1C The results of the plasma stability experiment of ADC-20 of the present disclosure.
  • Figure 2 Evaluation of the efficacy of ADC-21 and ADC-24 of the present disclosure on JIMT-1 tumor-bearing mice.
  • Figure 3 Evaluation of the efficacy of ADC of the present disclosure on human breast cancer cell SK-BR-3 transplanted tumor nude mice.
  • Figure 4 The results of the plasma stability experiment of ADC-25 of the present disclosure.
  • Figure 5 The therapeutic effect of ADC of the present disclosure on human brain astroblastoma U87MG transplanted tumor in nude mice.
  • Figure 6 The efficacy of ADC of the present disclosure on human pharyngeal carcinoma pleural effusion metastasis cell Detroit 562 transplanted tumor in nude mice.
  • Figure 7 The efficacy of ADC of the present disclosure on transplanted tumors of human glioma U87MG in nude mice.
  • Figure 8 Fitting trend graph of prescription screening experiment, where the unit of PS80 is 10 -4 g/mL; the unit of ADC-32 protein concentration (calculated as naked antibody concentration) is mg/mL.
  • the structure of the compound is determined by nuclear magnetic resonance (NMR) or mass spectrometry (MS). NMR is measured with Bruker AVANCE-400 nuclear magnetic instrument, the solvent is deuterated dimethyl sulfoxide (DMSO-d6), deuterated chloroform (CDCl 3 ), deuterated methanol (CD 3 OD), and the internal standard is tetramethyl sulfoxide (DMSO-d6) Based on silane (TMS), the chemical shift is given in units of 10 -6 (ppm).
  • NMR nuclear magnetic resonance
  • MS mass spectrometry
  • HPLC determination uses Agilent 1200DAD high pressure liquid chromatograph (Sunfire C18 150 ⁇ 4.6mm chromatographic column) and Waters 2695-2996 high pressure liquid chromatograph (Gimini C18 150 ⁇ 4.6mm chromatographic column).
  • the UV-HPLC measurement uses a Thermonanodrop2000 ultraviolet spectrophotometer.
  • the thin layer chromatography silica gel plate uses Yantai Huanghai HSGF254 or Qingdao GF254 silica gel plate, the size of the silica gel plate used for thin layer chromatography (TLC) is 0.15mm ⁇ 0.2mm, and the size of the thin layer chromatography separation and purification product is 0.4mm. ⁇ 0.5mm silica gel plate.
  • the known starting materials of the present disclosure can be synthesized by or according to methods known in the art, or can be purchased from ABCR GmbH & Co. KG, Acros Organics, Aldrich Chemical Company, Accela ChemBio Inc, Companies such as Darui Chemicals.
  • the reactions are all carried out under an argon atmosphere or a nitrogen atmosphere.
  • the argon atmosphere or nitrogen atmosphere means that the reaction flask is connected to an argon or nitrogen balloon with a volume of about 1L.
  • the hydrogen atmosphere means that the reaction flask is connected to a hydrogen balloon with a volume of about 1L.
  • the pressure hydrogenation reaction uses Parr 3916EKX hydrogenator and Qinglan QL-500 hydrogen generator or HC2-SS hydrogenator.
  • the hydrogenation reaction is usually evacuated and filled with hydrogen, and the operation is repeated 3 times.
  • the microwave reaction uses the CEM Discover-S 908860 microwave reactor.
  • the solution in the reaction refers to an aqueous solution.
  • reaction temperature is room temperature.
  • Room temperature is the most suitable reaction temperature, and the temperature range is 20°C to 30°C.
  • the preparation of the PBS buffer with pH 6.5 in the examples: take KH 2 PO 4 8.5g, K 2 HPO 4 .3H 2 O 8.56g, NaCl 5.85g, and EDTA 1.5g in a bottle, dilute the volume to 2L, and ultrasonic Dissolve all of it, shake well and get it.
  • the eluent system of column chromatography and the developing solvent system of thin-layer chromatography used to purify compounds include: A: dichloromethane and isopropanol system, B: dichloromethane and methanol system, C: petroleum ether and In the ethyl acetate system, the volume ratio of the solvent is adjusted according to the polarity of the compound, and a small amount of triethylamine and acidic or alkaline reagents can also be added for adjustment.
  • Q-TOF LC/MS uses Agilent 6530 accurate mass quadrupole-time-of-flight mass spectrometer and Agilent 1290-Infinity ultra-high performance liquid chromatograph (Agilent Poroshell 300SB-C8 5 ⁇ m, 2.1 ⁇ 75mm column).
  • the reaction solution was concentrated under reduced pressure, and the obtained crude compound 2 was purified by high performance liquid chromatography (separation conditions: chromatographic column: XBridge Prep C18 OBD 5um 19*250mm; mobile phase: A-water (10mmol NH 4 OAc), B- Acetonitrile, gradient elution, flow rate: 18 mL/min), collect the corresponding components, and concentrate under reduced pressure to obtain the title product (2-A: 1.5 mg, 2-B: 1.5 mg).
  • reaction was quenched by adding 5 mL of water to the reaction solution, the reaction solution was extracted with ethyl acetate (10 mL ⁇ 3), the organic phases were combined, washed with saturated sodium chloride solution (5 mL ⁇ 2), and the organic phase was dried with anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure, and the resulting residue was purified by thin layer chromatography with the developing solvent system B to obtain the title product 4 (2.5 mg, yield: 80.9%).
  • the benzyl 1-hydroxycyclopropane-1-carboxylate 8a (104mg, 0.54mmol; prepared by the method disclosed in the patent application "US2005/20645”) and 2-((((9H-fluoren-9-yl) Methoxy) carbonyl) amino) acetamido) methyl acetate 8b (100 mg, 0.27 mmol; prepared by the method disclosed in the patent application "CN105829346A”) was added to the reaction flask, 5 mL of tetrahydrofuran was added, argon replaced three times, ice The temperature of the water bath was cooled to 0-5°C, potassium tert-butoxide (61mg, 0.54mmol) was added, the ice bath was removed, and the temperature was raised to room temperature and stirred for 10 minutes.
  • reaction solution was purified by high performance liquid chromatography (separation conditions: column: XBridge Prep C18 OBD 5um 19*250mm; mobile phase: A-water (10mmol NH 4 OAc): B-acetonitrile, gradient elution, flow rate: 18mL/ min), collect the corresponding components, and concentrate under reduced pressure to obtain the title product 8 (2mg, yield: 39.0%).
  • the obtained residue was dissolved in 4 mL of dioxane, 2 mL of water was added, sodium bicarbonate (49.2 mg, 0.586 mmol) and 9-fluorenylmethyl chloroformate (126 mg, 0.49 mmol) were added, and the mixture was stirred at room temperature for 2 hours. 20 mL of water was added, extracted with ethyl acetate (10 mL ⁇ 3), the organic phase was washed with saturated sodium chloride solution (20 mL), dried over anhydrous sodium sulfate, filtered, and the filtrate was concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography with the developing solvent system C to obtain the title product 9b (48 mg, yield: 19%).
  • reaction solution was purified by high performance liquid chromatography (separation conditions: column: XBridge Prep C18 OBD 5um 19*250mm; mobile phase: A-water (10mmol NH 4 OAc): B-acetonitrile, gradient elution, flow rate: 18mL/ min), the corresponding components were collected and concentrated under reduced pressure to obtain the title product (9-A: 2.4 mg, 9-B: 1.7 mg).
  • reaction solution was purified by high performance liquid chromatography (separation conditions: column: XBridge Prep C18 OBD 5um19*250mm; mobile phase: A-water (10mmol NH 4 OAc) B-acetonitrile, gradient elution, flow rate: 18 mL/min)
  • the corresponding components were collected and concentrated under reduced pressure to obtain the title product (2.7mg, 2.6mg).
  • the reaction solution was concentrated under reduced pressure, and the obtained crude compound 12 was purified by high performance liquid chromatography (separation conditions: chromatographic column: Sharpsil-T C18 5um 21.2*250mm; mobile phase: A-water (10mmol NH 4 OAc), B- Acetonitrile, gradient elution, flow rate: 18 mL/min), to obtain the title product (7 mg, 15 mg).
  • Example 1-13 (reference example)
  • reaction solution was purified by high performance liquid chromatography (separation conditions: column: XBridge Prep C18 OBD 5um 19*250mm; mobile phase: A-water (10mmol NH 4 OAc): B-acetonitrile, gradient elution, flow rate: 18mL/ min) to obtain the title product (2mg, 2mg).
  • reaction solution was purified by high performance liquid chromatography (separation conditions: column: XBridge Prep C18 OBD 5um19*250mm; mobile phase: A-water (10mmol NH 4 OAc): B-acetonitrile, gradient elution, flow rate: 18 mL/min ), the corresponding components were collected, and concentrated under reduced pressure to obtain the title product 15 (2.5 mg, yield: 10.3%).
  • Ethyl 1-(hydroxymethyl)cyclobutanecarboxylate 16a (250mg, 1.58mmol, supplier Alfa) was dissolved in methanol (2mL) and water (1mL), sodium hydroxide (126mg, 3.15mmol) was added, and the temperature was increased. The temperature was raised to 40°C, and the reaction was stirred for 3 hours. Cool to normal temperature, concentrate under reduced pressure to remove the organic solvent, back-extract with ether (10 mL), and collect the aqueous phase. The aqueous phase was adjusted to pH 3-4 with 6N aqueous hydrochloric acid, and concentrated under reduced pressure to obtain a solid. Add 3 mL of toluene, concentrate under reduced pressure and spin dry, repeat three times. The oil pump was pulled dry to obtain the crude title product 16b (206 mg), which was directly used in the next reaction without purification.
  • the crude product 16b (206mg, 1.58mmol) was dissolved in acetonitrile (15mL), anhydrous potassium carbonate (1.09g, 7.90mmol) and tetrabutylammonium iodide (29mg, 78.51 ⁇ mol) were added, and benzyl bromide (216mg, 1.26 mmol), stirring at room temperature overnight. After filtration, the filtrate was concentrated under reduced pressure, and the resulting residue was purified by silica gel column chromatography with a developing solvent system C to obtain the title product 16c (112 mg, yield: 32.1%).
  • the obtained residue was dissolved in 3mL 1,4-dioxane, 0.5mL water was added, sodium bicarbonate (27mg, 0.32mmol) and 9-fluorene methyl chloroformate (71mg, 0.27mmol) were added, and the mixture was stirred at room temperature for 1 Hour.
  • the obtained residue was purified by C to obtain the title product 16d (24 mg, yield: 16.7%).
  • reaction solution was cooled to room temperature, concentrated, added 20 mL of water, extracted with ethyl acetate (10 mL ⁇ 4), the organic phase was washed with saturated sodium chloride solution (20 mL), dried over anhydrous sodium sulfate, filtered, and the filtrate was concentrated under reduced pressure.
  • the obtained residue was purified by silica gel column chromatography with the developing solvent system B to obtain the crude title product 17d (412 mg).
  • reaction solution was purified by high performance liquid chromatography (separation conditions: column: XBridge Prep C18 OBD 5um 19*250mm; mobile phase: A-water (10mmol NH 4 OAc): B-acetonitrile, gradient elution, flow rate: 18mL/ min), the corresponding components were collected, and concentrated under reduced pressure to obtain the title product 17 (6 mg, yield: 27.4%).
  • reaction solution was stirred at room temperature for 16 hours, filtered through celite, the filter cake was rinsed with ethyl acetate (10ml), the combined filtrate was concentrated under reduced pressure, and 4.1 g of the residue obtained was purified by silica gel column chromatography with a developing solvent system C, and further Chiral resolution and purification gave the title products 18a (1.1g) and 18b (1.2g).
  • reaction solution was filtered and purified by high performance liquid chromatography (separation conditions: chromatographic column: XBridge Prep C18 OBD 5um 19*250mm; mobile phase: A-water (10mmol NH 4 OAc): B-acetonitrile, gradient elution, flow rate: 18 mL/min), the corresponding components were collected and concentrated under reduced pressure to obtain the title product 18 (9.5 mg, yield: 56.2%).
  • the crude product 19b (230mg, 541.8 ⁇ mol) was dissolved in 7mL of dichloromethane, and 2,4-dimethoxybenzyl alcohol (136.7mg, 812.7 ⁇ mol), 1-ethyl-(3-dimethylaminopropyl) were added in sequence.
  • Base carbodiimide hydrochloride (155 mg, 808.5 ⁇ mol) and 4-dimethylaminopyridine (6.6 mg, 53.5 ⁇ mol) were stirred at room temperature for 16 hours.
  • the reaction solution was diluted with 10 mL of dichloromethane, washed with water (10 mL ⁇ 1), saturated brine (10 mL ⁇ 2), dried with anhydrous sodium sulfate, filtered and concentrated to obtain a crude product.
  • the residue obtained was purified by thin layer chromatography with the developing solvent system B to obtain the title product 19c (159 mg, yield: 51.0%)
  • reaction solution was filtered and purified by high performance liquid chromatography (separation conditions: chromatographic column: XBridge Prep C18 OBD 5um 19*250mm; mobile phase: A-water (10mmol NH 4 OAc): B-acetonitrile, gradient elution, flow rate: 18 mL/min), the corresponding components were collected, and concentrated under reduced pressure to obtain the title product 19 (2.1 mg, yield: 32.4%).
  • the vector can be constructed, transfected into eukaryotic cells such as HEK293 cells (Life Technologies Cat. No. 11625019), and obtained after expression and purification.
  • Embodiment 1-22 ADC-2
  • the compound 10-longer retention time compound (2.1 mg, 2.02 ⁇ mol) was dissolved in 0.10 mL DMSO, added to the above 2.0 mL solution, placed in a water bath shaker, and reacted with shaking at 25° C. for 3 hours to stop the reaction.
  • the reaction solution was desalted and purified by Sephadex G25 gel column (elution phase: pH 6.5 0.05M PBS buffer aqueous solution, containing 0.001M EDTA) to obtain the PBS buffer of the exemplary product ADC-2 of the general formula of FADC-1 Solution (4.95mg/mL, 1.1mL), stored at 4°C.
  • Dissolve compound 9-shorter retention time compound 9-A (1.0mg, 0.93 ⁇ mol) in 0.10mL DMSO, add to the above 1.3mL solution, place in a water bath shaker, shake at 25°C and react for 3 hours to stop the reaction .
  • the reaction solution was desalted and purified by Sephadex G25 gel column (elution phase: pH 6.5 0.05M PBS buffer aqueous solution, containing 0.001M EDTA) to obtain the PBS buffer of the exemplary product ADC-4 of FADC-4A general formula Solution (1.72mg/mL, 2.36mL), stored at 4°C.
  • Dissolve compound 9-shorter retention time compound 9-A (0.5mg, 0.42 ⁇ mol) in 0.031mL DMSO, add to the above 0.614ml solution, place in a water bath shaker, shake at 25°C for 3 hours, stop reaction.
  • the reaction solution was desalted and purified with a Sephadex G25 gel column (elution phase: pH 6.5 0.05M PBS buffered aqueous solution, containing 0.001M EDTA) to obtain the PBS buffer of the exemplary product ADC-5 of the general formula of FADC-4A Solution (3.08mg/mL, 0.82mL), stored at 4°C.
  • Dissolve compound 9-longer retention time compound 9-B (0.68mg, 0.63 ⁇ mol) in 0.10mL DMSO, add to the above 0.75mL solution, place in a water bath shaker, shake at 25°C for 3 hours to stop the reaction .
  • the reaction solution was desalted and purified by Sephadex G25 gel column (elution phase: pH 6.5 0.05M PBS buffer aqueous solution, containing 0.001M EDTA) to obtain the PBS buffer of the exemplary product ADC-6 of the general formula of FADC-4B Solution (1.78mg/mL, 1.78mL), stored at 4°C.
  • the reaction solution was desalted and purified by Sephadex G25 gel column (elution phase: pH 6.5 0.05M PBS buffer aqueous solution, containing 0.001M EDTA) to obtain the PBS buffer of the exemplary product ADC-9 of FADC-9A general formula Solution (2.27mg/mL, 1.11mL), stored at 4°C.
  • Dissolve compound 14-shorter retention time compound (0.64 mg, 588 nmol) in 40 ⁇ L DMSO, add it to the above reaction solution, place it in a water bath shaker, and shake the reaction at 25° C. for 3 hours to stop the reaction.
  • the reaction solution was desalted and purified with a Sephadex G25 gel column (elution phase: pH 6.5 0.05M PBS buffer aqueous solution, containing 0.001M EDTA) to obtain the PBS buffer of the exemplary product ADC-10 of the general formula of FADC-10 Solution (5.48mg/mL, 1.03mL), stored at 4°C.
  • UV-Vis calculated average value: n 6.25.
  • Dissolve compound 14-longer retention time compound (0.72 mg, 662 nmol) in 40 ⁇ L DMSO, add it to the above reaction solution, place it in a water bath shaker, and shake the reaction at 25° C. for 3 hours to stop the reaction.
  • the reaction solution was desalted and purified with a Sephadex G25 gel column (elution phase: pH 6.5 0.05M PBS buffered aqueous solution, containing 0.001M EDTA) to obtain the PBS buffer of the exemplary product ADC-11 of the general formula of FADC-10 Solution (2.13mg/mL, 1.87mL), stored at 4°C.
  • UV-Vis calculated average value: n 7.03.
  • UV-Vis calculated average value: n 6.93.
  • UV-Vis calculated average value: n 6.53.
  • UV-Vis calculated average value: n 7.61.
  • UV-Vis calculated average: n 7.89.
  • Embodiment 1-36 ADC-16
  • UV-Vis calculated average value: n 7.43.
  • UV-Vis calculated average value: n 5.42.
  • UV-Vis calculated average value: n 7.23.
  • Dissolve compound 9-shorter retention time compound 9-A (2.0 mg, 1862nmol) in 100 ⁇ L DMSO, add it to the above reaction solution, place it in a water bath shaker, and shake the reaction at 25°C for 3 hours to stop the reaction.
  • the reaction solution was desalted and purified with Sephadex G25 gel column (elution phase: pH 6.5 0.05M PBS buffered aqueous solution, containing 0.001M EDTA) to obtain the PBS buffer of the exemplary product ADC-19 of FADC-4A general formula Solution (0.73mg/mL, 13.0mL), stored at 4°C.
  • UV-Vis calculated average value: n 6.26.
  • the compound 10-longer retention time compound (2.0 mg, 1815 nmol) was dissolved in 100 ⁇ l DMSO, added to the above reaction solution, placed in a water bath shaker, and reacted with shaking at 25° C. for 3 hours to stop the reaction.
  • the reaction solution was desalted and purified by Sephadex G25 gel column (elution phase: pH 6.5 0.05M PBS buffer aqueous solution, containing 0.001M EDTA) to obtain the PBS buffer of the exemplary product ADC-20 of the general formula of FADC-1 Solution (0.73mg/mL, 13.0mL), stored at 4°C.
  • UV-Vis calculated average value: n 7.43.
  • UV-Vis calculated average value: n 7.23.
  • UV-Vis calculated average value: n 6.79.
  • UV-Vis calculated average value: n 7.05.
  • UV-Vis calculated average value: n 7.07.
  • UV-Vis calculated average value: n 6.87.
  • Compound 20 (1.0 mg, 967 nmol) was dissolved in 100 ⁇ L of DMSO, added to the above reaction solution, placed in a water bath shaker, and reacted with shaking at 25° C. for 3 hours to stop the reaction.
  • the reaction solution was desalted and purified with a Sephadex G25 gel column (elution phase: pH 6.5 0.05M PBS buffered aqueous solution, containing 0.001M EDTA) to obtain an exemplary product of FADC-26 general formula ADC-26 PBS buffer Solution (1.61mg/mL, 4.0mL), stored at 4°C.
  • UV-Vis calculated average value: n 6.15.
  • Dissolve compound 9-short retention time compound 9-A (1.02 mg, 950 nmol) in 100 ⁇ L DMSO, add it to the above reaction solution, place it in a water bath shaker, and shake the reaction at 25° C. for 3 hours to stop the reaction.
  • the reaction solution was desalted and purified with a Sephadex G25 gel column (elution phase: pH 6.5 0.05M PBS buffered aqueous solution, containing 0.001M EDTA) to obtain the PBS buffer of the exemplary product ADC-27 of the general formula of FADC-25 Solution (1.94mg/mL, 3.5mL), stored at 4°C.
  • UV-Vis calculated average value: n 6.11.
  • UV-Vis calculated average value: n 7.46.
  • UV-Vis calculated average value: n 7.24.
  • UV-Vis calculated average value: n 6.15.
  • UV-Vis calculated average value: n 6.33.
  • trastuzumab antibody stock solution 34.44 ⁇ mol, 20mM histidine-hydrochloric acid buffer is diluted with The antibody to the final antibody concentration of 15mg/mL) and 34.64mg of tris(2-carboxyethyl)phosphine hydrochloride (reducing agent TCEP, Sigma, 120.84 ⁇ mol) were stirred and reacted in a constant temperature water bath for 3 hours to generate Intermediate I solution.
  • trastuzumab antibody stock solution 55.11 ⁇ mol, 20 mM histidine buffer is diluted to The final antibody concentration (15 mg/mL) and 123.95 mg of tris(2-carboxyethyl) phosphine hydrochloride (reducing agent TCEP, Sigma, 432.41 ⁇ mol) were stirred and reacted in a constant temperature water bath for 5 hours to generate Intermediate I solution.
  • reducing agent TCEP tris(2-carboxyethyl) phosphine hydrochloride
  • ADC is a kind of antibody cross-linked drug.
  • the mechanism of its treatment of diseases is to rely on the targeting of antibodies to transport toxin molecules into cells, thereby killing the cells.
  • the load of the drug plays a decisive role in the efficacy of the drug.
  • UV-Vis spectrophotometry UV-Vis
  • HIC hydrophobic chromatography
  • UV spectrophotometry using instrument: Thermonanodrop2000 UV spectrophotometer
  • the principle is that the total absorbance of ADC stock at a certain wavelength is equal to that of cytotoxic drugs and monoclonal antibodies.
  • the sum of the absorbance value namely:
  • a 280nm ⁇ mab-280 bC mab + ⁇ Drug-280 bC Drug
  • ⁇ Drug-280 The average molar extinction coefficient of the drug at 280nm is 5100;
  • ⁇ mab-280 Trastuzumab single antigen solution or Pertuzumab single antigen solution has an average molar extinction coefficient of 214600 at 280nm;
  • C mab concentration of trastuzumab single antigen solution or pertuzumab single antigen solution;
  • the optical path length is 1 cm.
  • a 370nm ⁇ mab-370 bC mab + ⁇ Drug-370 bC Drug
  • ⁇ Drug-370 The average molar extinction coefficient of the drug at 370nm is 19000;

Abstract

一种药物组合物，包含在缓冲液中的抗体药物偶联物，抗体药物偶联物具有如通式（Pc-L-Y-D）所示的结构。药物组合物还包含糖和表面活性剂。

Description

一种含抗体药物偶联物的药物组合物及其用途
本申请要求2020年3月25日提交的中国专利申请(申请号CN 202010219601.7)和2021年3月17日提交的中国专利申请(申请号CN 202110287012.7)的优先权。
技术领域
本披露属于药物制剂领域，具体涉及一种含抗体药物偶联物的药物组合物，以及其作为抗癌药物的用途。
背景技术
这里的陈述仅提供与本披露有关的背景信息，而不必然地构成现有技术。
抗体药物偶联物(antibody drug conjugate，ADC)将单克隆抗体或者抗体片段通过稳定的化学接头化合物与具有生物活性的细胞毒素相连，充分利用了抗体对正常细胞和肿瘤细胞表面抗原结合的特异性和细胞毒素的高效性，同时又避免了前者疗效偏低和后者毒副作用过大等缺陷。这也就意味着，与以往传统的化疗药物相比，抗体药物偶联物能精准地结合肿瘤细胞并降低对正常细胞的影响(Mullard A,(2013)Nature Reviews Drug Discovery,12:329–332；DiJoseph JF,Armellino DC,(2004)Blood,103:1807-1814)。
2000年第一个抗体药物偶联物
Figure PCTCN2021082854-appb-000001
(吉妥珠单抗奥唑米星(gemtuzumab ozogamicin)，惠氏制药有限公司)被美国FDA批准上市，用于治疗急性髓细胞白血病(Drugs of the Future(2000)25(7):686；US4970198；US 5079233；US 5585089；US 5606040；US 5693762；US 5739116；US 5767285；US 5773001)。
2011年8月，
Figure PCTCN2021082854-appb-000002
(brentuximab vedotin，西雅图基因遗传公司)通过美国FDA快速审评通道，用于治疗霍奇金淋巴瘤以及复发性间变性大细胞淋巴瘤(Nat.Biotechnol(2003)21(7):778-784；WO2004010957；WO2005001038；US7090843A；US7659241；WO2008025020)。
Figure PCTCN2021082854-appb-000003
是一种新型靶向ADC药物，能使药物直接作用于淋巴瘤细胞上的靶点CD30后发生内吞作用从而诱导肿瘤细胞的凋亡。
Figure PCTCN2021082854-appb-000004
和
Figure PCTCN2021082854-appb-000005
都是针对血液肿瘤进行靶向治疗，血液肿瘤和实体肿瘤相比组织结构相对简单。2013年2月，
Figure PCTCN2021082854-appb-000006
(ado-trastuzumab emtansine，T-DM1)获得美国FDA批准，用于治疗HER2阳性同时对曲妥珠单抗(Tratuzumab，商品名：Herceptin)和紫杉醇有抗药性的晚期或转移性乳腺癌患者(WO2005037992；US8088387)。
Figure PCTCN2021082854-appb-000007
是美国FDA批准的治疗实体肿瘤的第一个ADC药物。
用于抗体药物偶联物的具有细胞毒性的小分子有几类，其中有一类是喜树碱衍生物，它们通过抑制拓扑异构酶I而具有抗肿瘤作用。报道喜树碱衍生物依喜替康(化学名：(1S,9S)-1-氨基-9-乙基-5-氟-2,3-二氢-9-羟基-4-甲基-1H,12H-苯并[de] 吡喃并[3’,4’:6,7]咪唑并[1,2-b]喹啉-10,13(9H,15H)-二酮)应用于抗体药物偶联物(ADC)的文献有WO2014057687；Clinical Cancer Research(2016)22(20)：5097-5108；Cancer Sci(2016)107:1039-1046。但仍需进一步开发疗效更好的ADC药物。
但是，ADC具有比抗体更复杂的异质结构，因此，对用于治疗目的ADC制剂提出了更大的挑战。
发明内容
本披露提供一种药物组合物，其包含抗体药物偶联物和缓冲剂，其中所述抗体药物偶联物具有如通式(Pc-L-Y-D)所示的结构：
Figure PCTCN2021082854-appb-000008
其中：
Y选自-O-(CR aR b) m-CR 1R 2-C(O)-、-O-CR 1R 2-(CR aR b) m-、-O-CR 1R 2-、-NH-(CR aR b) m-CR 1R 2-C(O)-和-S-(CR aR b) m-CR 1R 2-C(O)-；
R a和R b相同或不同，且各自独立地选自氢原子、氘原子、卤素、烷基、卤代烷基、氘代烷基、烷氧基、羟基、氨基、氰基、硝基、羟烷基、环烷基和杂环基；
或者，R a和R b与其相连接的碳原子一起形成环烷基或杂环基；
R 1选自卤素、卤代烷基、氘代烷基、环烷基、环烷基烷基、烷氧基烷基、杂环基、芳基和杂芳基；
R 2选自氢原子、卤素、卤代烷基、氘代烷基、环烷基、环烷基烷基、烷氧基烷基、杂环基、芳基和杂芳基；
或者，R 1和R 2与其相连接的碳原子一起形成环烷基或杂环基；
或者，R a和R 2与其相连的碳原子一起形成环烷基或杂环基；
m为0至4的整数；
n为1至10，n是小数或整数；
L为接头单元；
Pc为抗体或其抗原结合片段；
所述组合物的pH为约4.5至约6.0，优选pH为约4.8至约5.3，更优选pH为约5.0至约5.1。
在可选的实施方案中，药物组合物中所述缓冲剂的pH值约为4.5至约6.0，非限制性的实施例包括约4.5、约4.6、约4.7、约4.8、约4.9、约5.0、约5.1、约5.2、约5.3、约5.4、约5.5、约5.6、约5.7、约5.8、约5.9、约6.0，优选为大约4.8至约5.3，更优选为大约5.0至约5.1。在一些实施方式中，所述药物组合物的pH为4.5至5.2，优选pH为4.8至5.2，更优选pH为5.0至5.1。在一些实施方式中，所述药物组合物的pH为5.0。
在可选的实施方案中，药物组合物还包含表面活性剂，可选自聚山梨酯、聚山梨酯20、聚山梨酯80、聚羟亚烃、Triton、十二烷基磺酸钠、月桂基磺酸钠、辛基糖甙钠、月桂基-磺基甜菜碱、肉豆蔻基-磺基甜菜碱、亚油基-磺基甜菜碱、硬脂基-磺基甜菜碱、月桂基-肌氨酸、肉豆蔻基-肌氨酸、亚油基-肌氨酸、硬脂基-肌氨酸、亚油基-甜菜碱、肉豆蔻基-甜菜碱、鲸蜡基-甜菜碱、月桂酰胺基丙基-甜菜碱、柯卡酰胺基丙基-甜菜碱、亚油酰胺基丙基-甜菜碱、肉豆蔻酰胺基丙基-甜菜碱、棕榈酰胺基丙基-甜菜碱、异硬脂酰胺基丙基-甜菜碱、肉豆蔻酰胺基丙基-二甲基胺、棕榈酰胺基丙基-二甲基胺、异硬脂酰胺基丙基-二甲基胺、甲基可可酰基钠、甲基油基牛磺酸钠、聚乙二醇、聚丙二醇、乙烯与丙烯二醇的共聚物等等。优选的表面活性剂是聚山梨酯80或聚山梨酯20，更优选为聚山梨酯80。
在可选的实施方案中，药物组合物中表面活性剂的浓度为约0.01mg/mL至约1.0mg/mL。在可选的实施方案中，药物组合物中表面活性剂的浓度为约0.05mg/mL至约0.5mg/mL，优选为约0.1mg/mL至约0.3mg/mL、约0.2mg/mL至约0.6mg/mL、约0.2mg/mL至约0.5mg/mL或约0.2mg/mL至约0.3mg/mL，更优选为约0.2mg/mL，非限制性的实施例包括0.1mg/mL、0.15mg/mL、0.2mg/mL、0.25mg/mL、0.3mg/mL、0.35mg/mL、0.4mg/mL、0.45mg/mL、0.5mg/mL、0.6mg/mL。
在可选的实施方案中，前述药物组合物还包含糖。本披露的“糖”包含常规组合物(CH 2O) n及其衍生物，包括单糖，二糖，三糖，多糖，糖醇，还原性糖，非还原性糖等等。所述的糖可选自葡萄糖，蔗糖，海藻糖，乳糖，果糖，麦芽糖，右旋糖苷，甘油，赤藻糖醇，丙三醇，阿拉伯糖醇，sylitol，山梨糖醇，甘露醇，密里二糖，松三糖，蜜三糖，甘露三糖，水苏糖，麦芽糖，乳果糖，麦芽酮糖，山梨醇，麦芽糖醇，乳糖醇，异-麦芽酮糖等等。优选的糖是非还原性二糖，更优选为海藻糖或蔗糖，最优选为蔗糖。
在可选的实施方案中，前述药物组合物中糖的浓度为约60mg/mL至约90mg/mL，非限制性的实施例包括60mg/mL、65mg/mL、70mg/mL、75mg/mL、80mg/mL、85mg/mL、90mg/mL，优选为80mg/mL。在一些实施方式中，糖的浓度为70mg/mL至90mg/mL。
在可选的实施方案中，药物组合物中所述抗体药物偶联物的浓度为大约1mg/mL至约100mg/mL，非限制性的实施例包括1mg/mL、10mg/mL、11mg/mL、 12mg/mL、13mg/mL、14mg/mL、15mg/mL、16mg/mL、17mg/mL、18mg/mL、19mg/mL、20mg/mL、21mg/mL、22mg/mL、23mg/mL、24mg/mL、25mg/mL、26mg/mL、27mg/mL、28mg/mL、29mg/mL、30mg/mL、40mg/mL、50mg/mL、60mg/mL、70mg/mL、80mg/mL、90mg/mL、100mg/mL，优选为大约10mg/mL至约30mg/mL；更优选为约20mg/mL至约22mg/mL。具体的，非限制性的实施例包括20.1mg/mL、20.2mg/mL、20.3mg/mL、20.4mg/mL、20.5mg/mL、20.6mg/mL、20.7mg/mL、20.8mg/mL、20.81mg/mL、20.82mg/mL、20.83mg/mL、20.84mg/mL、20.85mg/mL、20.86mg/mL、20.87mg/mL、20.88mg/mL、20.89mg/mL、20.9mg/mL、20.9mg/mL、20.91mg/mL、20.92mg/mL、20.93mg/mL、20.94mg/mL、20.95mg/mL、20.96mg/mL、20.97mg/mL、20.98mg/mL、20.99mg/mL、21mg/mL。在可选的实施方案中，药物组合物中所述抗体药物偶联物的浓度为以裸抗体(即ADC中的抗体部分)计，大约10mg/mL至约30mg/mL，优选为大约20mg/mL。
在可选的实施方案中，前述药物组合物中缓冲剂选自组氨酸盐缓冲剂、琥珀酸盐缓冲剂和枸橼酸盐缓冲剂，优选为琥珀酸盐缓冲剂，更优选为琥珀酸-琥珀酸钠缓冲剂。
在可选的实施方案中，药物组合物中缓冲剂的浓度为大约5mM至约50mM，非限制性的实施例包括1mM、5mM、6mM、7mM、8mM、9mM、10mM、11mM、12mM、13mM、14mM、15mM、16mM、17mM、18mM、19mM、20mM、30mM、40mM、50mM，优选为大约5mM至约20mM；最优选为约10mM。
在可选的实施方案中，药物载量(n)的范围可以是每个抗体或其抗原结合片段(Pc)结合3至8个，4至8个，5至7个，更优选5.3至6.1个，5.7个细胞毒性药物。n是小数或整数。
在可选的实施方案中，所述药物组合物包含：
(a)约10mg/mL至约30mg/mL的所述抗体药物偶联物，(b)约0.05mg/mL至约0.5mg/mL的聚山梨酯，(c)约60mg/mL至约90mg/mL的糖，和(d)约5mM至约20mM的缓冲剂；所述药物组合物的pH为约4.8至约5.3；
在可选的实施方案中，所述药物组合物包含：
(a)约10mg/mL至约30mg/mL的所述抗体药物偶联物，(b)约0.05mg/mL至约0.5mg/mL的聚山梨酯，(c)约60mg/mL至约90mg/mL的糖，和(d)约5mM至约20mM的缓冲剂；所述药物组合物的pH为4.8至5.2；
在可选的实施方案中，所述药物组合物包含：
(a)约20mg/mL至约22mg/mL的所述抗体药物偶联物，(b)约0.2mg/mL的聚山梨酯80，(c)80mg/mL的蔗糖，和(d)10mM琥珀酸盐缓冲剂，所述药物组合物的pH为约5.0至约5.1。在一些实施方式中，所述药物组合物的pH为5.0至5.1。
在可选的实施方案中，在前述抗体药物偶联物中，
-Y-为-O-(CR aR b)m-CR 1R 2-C(O)-；
R a和R b相同或不同，且各自独立地选自氢原子、氘原子、卤素和烷基；
R 1为C 3-7环烷基烷基或C 3-7环烷基；
R 2选自氢原子、卤代烷基和C 3-7环烷基；优选氢原子；
或者，R 1和R 2与其相连接的碳原子一起形成C 3-7环烷基；
m为0或1。
在可选的实施方案中，在前述抗体药物偶联物中，
-Y-为-O-(CH 2)m-CR 1R 2-C(O)-；
R 1为C 3-7环烷基烷基或C 3-7环烷基；
R 2选自氢原子、卤代烷基和C 3-7环烷基；
或者，R 1和R 2与其相连接的碳原子一起形成C 3-7环烷基；
m为0或1。
在可选的实施方案中，在前述抗体药物偶联物中，
-Y-为-O-(CH 2)m-CR 1R 2-C(O)-；
R 1为C 3-7环烷基烷基或C 3-7环烷基；
R 2为氢原子；
或者，R 1和R 2与其相连接的碳原子一起形成C 3-7环烷基；
m为0或1。
在可选的实施方案中，在前述抗体药物偶联物中，
-Y-为-O-(CH 2)m-CR 1R 2-C(O)-；
R 1为C 3-7环烷基烷基或C 3-7环烷基；
R 2为氢原子；
或者，R 1和R 2与其相连接的碳原子一起形成C 3-7环烷基；
m为0。
在可选的实施方案中，在前述抗体药物偶联物中，
-Y-选自：
Figure PCTCN2021082854-appb-000009
在可选的实施方案中，在前述抗体药物偶联物中，
-Y-的O端与接头单元L相连。
在可选的实施方案中，在前述抗体药物偶联物中，
-Y-选自：
Figure PCTCN2021082854-appb-000010
在可选的实施方案中，前述抗体药物偶联物具有如通式(Pc-L-D 1)所示的结构：
Figure PCTCN2021082854-appb-000011
其中：
R 1为环烷基烷基或环烷基；优选C 3-7环烷基烷基或C 3-7环烷基；
R 2选自氢原子、卤代烷基和C 3-7环烷基；优选氢原子；
或者，R 1和R 2与其相连接的碳原子一起形成C 3-7环烷基；
m为0或1；
n为1至10，可以为整数，也可以为小数；
Pc为抗体或其抗原结合片段；且L为接头单元。
可选的实施方案中，在前述抗体药物偶联物中，n为2至8，可以为整数，也可以为小数；优选为3至8，可以为整数，也可以为小数。
可选的实施方案中，在前述抗体药物偶联物中，接头单元-L-为-L 1-L 2-L 3-L 4-，其中：
L 1选自-(琥珀酰亚胺-3-基-N)-W-C(O)-、-CH 2-C(O)-NR 3-W-C(O)-和-C(O)-W-C(O)-，其中W选自C 1-8烷基、C 1-8烷基-环烷基和1至8个原子的直链杂烷基，所述杂烷基包含1至3个选自N、O或S的杂原子，其中所述的C 1-8烷基、环烷基和直链杂烷基各自独立地任选进一步被选自卤素、羟基、氰基、氨基、烷基、氯代烷基、氘代烷基、烷氧基和环烷基的一个或多个取代基所取代；
L 2选自-NR 4(CH 2CH 2O)p 1CH 2CH 2C(O)-、-NR 4(CH 2CH 2O)p 1CH 2C(O)-、-S(CH 2)p 1C(O)-和化学键，其中p 1为1至20的整数；L 2优选为化学键；
L 3为由2至7个氨基酸构成的肽残基，其中氨基酸任选进一步被选自卤素、羟基、氰基、氨基、烷基、氯代烷基、氘代烷基、烷氧基和环烷基中的一个或多 个取代基所取代；
L 4选自-NR 5(CR 6R 7) t-、-C(O)NR 5、-C(O)NR 5(CH 2) t-和化学键，其中t为1至6的整数；L 4优选为-NR 5(CR 6R 7)t-；
R 3、R 4和R 5相同或不同，且各自独立地选自氢原子、烷基、卤代烷基、氘代烷基和羟烷基；
R 6和R 7相同或不同，且各自独立地选自氢原子、卤素、烷基、卤代烷基、氘代烷基和羟烷基。
在可选的实施方案中，在前述抗体药物偶联物中，接头单元L 1选自-(琥珀酰亚胺-3-基-N)-(CH 2)s 1-C(O)-、-(琥珀酰亚胺-3-基-N)-CH 2-环己基-C(O)-、-(琥珀酰亚胺-3-基-N)-(CH 2CH 2O)s 2-CH 2CH 2-C(O)-、-CH 2-C(O)-NR 3-(CH 2)s 3-C(O)-和-C(O)-(CH 2)s 4C(O)-，其中s 1为2至8的整数，s 2为1至3的整数，s 3为1至8的整数，s 4为1至8的整数；s 1优选为5。
在可选的实施方案中，在前述抗体药物偶联物中，接头单元L 2为-NR 4(CH 2CH 2O)p 1CH 2C(O)-或化学键，p 1为6至12的整数。
在可选的实施方案中，在前述抗体药物偶联物中，L 4为-NR 5(CR 6R 7)t-，R 5为氢原子或烷基，R 6和R 7相同或不同，且各自独立地为氢原子或烷基，t为1或2，优选为2；L 4优选为-NR 5CR 6R 7-，更优选为-NHCH 2-。
在可选的实施方案中，在前述抗体药物偶联物中，接头单元-L-为-L 1-L 2-L 3-L 4-，
L 1为
Figure PCTCN2021082854-appb-000012
s 1为2至8的整数；
L 2为化学键；
L 3为四肽残基；
L 4为-NR 5(CR 6R 7)t-，R 5为氢原子或烷基，R 6和R 7相同或不同，且各自独立地为氢原子或烷基，t为1或2。
在可选的实施方案中，在前述抗体药物偶联物中，接头单元-L-为-L 1-L 2-L 3-L 4-，
L 1为-(琥珀酰亚胺-3-基-N)-CH 2-环己基-C(O)-；
L 2为-NR 4(CH 2CH 2O) 9CH 2C(O)-；
L 3为四肽残基；
L 4为-NR 5(CR 6R 7)t-，R 5为氢原子或烷基，R 6和R 7相同或不同，且各自独立地为氢原子或烷基，t为1或2。
在可选的实施方案中，在前述抗体药物偶联物中，所述的L 3的肽残基为由一个、两个或多个选自苯丙氨酸(E)、甘氨酸(G)、缬氨酸(V)、赖氨酸(K)、瓜氨酸、丝氨酸(S)、谷氨酸(E)、天冬氨酸(N)中的氨基酸形成的氨基酸残基；优选为由一个、两个或多个选自苯丙氨酸和甘氨酸的氨基酸形成的氨基酸残基；更优选为四肽残基；最优选为GGFG(甘氨酸-甘氨酸-苯丙氨酸-甘氨酸)的四肽残 基。
在可选的实施方案中，在前述抗体药物偶联物中，所述的接头单元-L-为-L 1-L 2-L 3-L 4-，其L 1端与抗体或其抗原结合片段相连，L 4端与Y相连。
在可选的实施方案中，在前述抗体药物偶联物中，所述-L-Y-为：
Figure PCTCN2021082854-appb-000013
L 1为-(琥珀酰亚胺-3-基-N)-(CH 2)s 1-C(O)-或-(琥珀酰亚胺-3-基-N)-CH 2-环己基-C(O)-；
L 2为-NR 4(CH 2CH 2O)p 1CH 2C(O)-或化学键，p 1为6至12的整数；R 4选自氢原子、烷基、卤代烷基、氘代烷基和羟烷基；
L 3为GGFG的四肽残基；
R 1为环烷基烷基或环烷基；优选C 3-7环烷基烷基或C 3-7环烷基；
R 2选自氢原子、卤代烷基和C 3-7环烷基；优选氢原子；
或者，R 1和R 2与其相连接的碳原子一起形成C 3-7环烷基；
R 5选自氢原子或烷基，R 6和R 7相同或不同，且各自独立地为氢原子或烷基；
s 1为2至8的整数；优选5；
m为0至4的整数。
在可选的实施方案中，在前述抗体药物偶联物中，所述-L-Y-为：
Figure PCTCN2021082854-appb-000014
优选为：
Figure PCTCN2021082854-appb-000015
L 2为-NR 4(CH 2CH 2O) 9CH 2C(O)-；R 4选自氢原子、烷基、卤代烷基、氘代烷基和羟烷基；
L 3为GGFG的四肽残基；
R 1为环烷基烷基或环烷基；优选C 3-7环烷基烷基或C 3-7环烷基；
R 2选自氢原子、卤代烷基和C 3-7环烷基；优选氢原子；
或者，R 1和R 2与其相连接的碳原子一起形成C 3-7环烷基；
R 5选自氢原子或烷基，R 6和R 7相同或不同，且各自独立地为氢原子或烷基；
m为0至4的整数。
在可选的实施方案中，在前述抗体药物偶联物中，所述-L-Y-为：
Figure PCTCN2021082854-appb-000016
L 2为化学键；
L 3为GGFG的四肽残基；
R 1为环烷基烷基或环烷基；优选C 3-7环烷基烷基或C 3-7环烷基；
R 2选自氢原子、卤代烷基和C 3-7环烷基；优选氢原子；
或者，R 1和R 2与其相连接的碳原子一起形成C 3-7环烷基；
R 5选自氢原子或烷基，R 6和R 7相同或不同，且各自独立地为氢原子或烷基；
s 1为2至8的整数；优选5；
m为0至4的整数。
在可选的实施方案中，在前述抗体药物偶联物中，其中所述-L-Y-为：
Figure PCTCN2021082854-appb-000017
其中：
L 1为-(琥珀酰亚胺-3-基-N)-(CH 2)s 1-C(O)-或-(琥珀酰亚胺-3-基-N)-CH 2-环己基-C(O)-；
L 2为-NR 4(CH 2CH 2O)p 1CH 2C(O)-或化学键，p 1为1至20的整数；R 4选自氢原子、烷基、卤代烷基、氘代烷基和羟烷基；
L 3为GGFG的四肽残基；
R 1为环烷基烷基或环烷基；优选C 3-7环烷基烷基或C 3-7环烷基；
R 2选自氢原子、卤代烷基和C 3-7环烷基；优选氢原子；
或者，R 1和R 2与其相连接的碳原子一起形成C 3-7环烷基；
R 5、R 6和R 7相同或不同，且各自独立地为氢原子或烷基；
s 1为2至8的整数；
m为0至4的整数。
在可选的实施方案中，在前述抗体药物偶联物中，所述-L-Y-为：
Figure PCTCN2021082854-appb-000018
其中：
L 2为化学键；
L 3为GGFG的四肽残基；
R 1为环烷基烷基或环烷基；优选C 3-7环烷基烷基或C 3-7环烷基；
R 2选自氢原子、卤代烷基和C 3-7环烷基；优选氢原子；
或者，R 1和R 2与其相连接的碳原子一起形成C 3-7环烷基；
R 5选自氢原子或烷基，R 6和R 7相同或不同，且各自独立地为氢原子或烷基；
s 1为2至8的整数；
m为0至4的整数。
在可选的实施方案中，所述的抗体药物偶联物具有如通式(Pc-L a-Y-D)所示的结构：
Figure PCTCN2021082854-appb-000019
其中，
W选自C 1-8烷基、C 1-8烷基-C 3-7环烷基和1至8个原子的直链杂烷基，所述直链杂烷基包含1至3个选自N、O或S的杂原子，其中所述的C 1-8烷基、C 3-7环烷基和直链杂烷基各自独立地任选进一步被选自卤素、羟基、氰基、氨基、C 1-6烷基、氯代C 1-6烷基、氘代C 1-6烷基、C 1-6烷氧基和C 3-7环烷基的一个或多个取代基所取代；
L 2选自-NR 4(CH 2CH 2O)p 1CH 2CH 2C(O)-、-NR 4(CH 2CH 2O)p 1CH 2C(O)-、-S(CH 2)p 1C(O)-和化学键，其中p 1为1至20的整数；R 4选自氢原子、烷基、卤代烷基、氘代烷基和羟烷基；
L 3为由2至7个氨基酸残基构成的肽残基，其中所述的氨基酸残基选自苯丙氨酸(F)、甘氨酸(G)、缬氨酸(V)、赖氨酸(K)、瓜氨酸、丝氨酸(S)、谷氨酸(Q)、天冬氨酸(D)中的氨基酸形成的氨基酸残基，并任选进一步被选自卤素、羟基、氰基、氨基、C 1-6烷基、氯代C 1-6烷基、氘代C 1-6烷基、C 1-6烷氧基和C 3-7环烷基中的一个或多个取代基所取代；
R 1为卤代C 1-6烷基或C 3-7环烷基；
R 2选自氢原子、卤代C 1-6烷基和C 3-7环烷基；
或者，R 1和R 2与其相连接的碳原子一起形成C 3-7环烷基；
R 5选自氢原子、C 1-6烷基、卤代C 1-6烷基、氘代C 1-6烷基和羟基C 1-6烷基；
R 6和R 7相同或不同，且各自独立地选自氢原子、卤素、C 1-6烷基、卤代C 1-6烷基、氘代C 1-6烷基和羟基C 1-6烷基；
m为0或1；
n为3至8的小数或整数；
Pc为抗体或其抗原结合片段。
在可选的实施方案中，所述的抗体药物偶联物具有如通式(Pc-L b-Y-D)所示的结构：
Figure PCTCN2021082854-appb-000020
其中：
s 1为2至8的整数；
Pc、R 1、R 2、R 5、R 6、R 7、m和n如通式(Pc-L a-Y-D)中所定义。
在可选的实施方案中，在前述抗体药物偶联物中，所述-L-Y-包括，但不限于：
Figure PCTCN2021082854-appb-000021
Figure PCTCN2021082854-appb-000022
在可选的实施方案中，前述抗体药物偶联物具有如下的结构：
Figure PCTCN2021082854-appb-000023
Figure PCTCN2021082854-appb-000024
Figure PCTCN2021082854-appb-000025
Figure PCTCN2021082854-appb-000026
其中Pc和n如通式(Pc-La-Y-D)中所定义。
在可选的实施方案中，所述的抗体药物偶联物具有如下式所示的结构：
Figure PCTCN2021082854-appb-000027
其中：
n为3至8，n是小数或整数；
Pc为抗体或其抗原结合片段。
在可选的实施方案中，所述Pc为抗体或其抗原结合片段，其中所述抗体选自嵌合抗体、人源化抗体或全人源抗体；优选为单克隆抗体。
在可选的实施方案中，所述Pc选自抗HER2(ErbB2)抗体、抗EGFR抗体、抗B7-H3抗体、抗c-Met抗体、抗HER3(ErbB3)抗体、抗HER4(ErbB4)抗体、抗CD20抗体、抗CD22抗体、抗CD30抗体、抗CD33抗体、抗CD44抗体、抗CD56抗体、抗CD70抗体、抗CD73抗体、抗CD105抗体、抗CEA抗体、抗A33抗体、抗Cripto抗体、抗EphA2抗体、抗G250抗体、抗MUCl抗体、抗Lewis Y抗体、抗VEGFR抗体、抗GPNMB抗体、抗Integrin抗体、抗PSMA抗体、抗Tenascin-C抗体、抗SLC44A4抗体和抗Mesothelin抗体，或其抗原结合片段。
在可选的实施方案中，在所述的抗体药物偶联物中所述的抗体或其抗原结合片段选自Trastuzumab、Pertuzumab、Nimotuzumab、Enoblituzumab、Emibetuzumab、Inotuzumab、Pinatuzumab、Brentuximab、Gemtuzumab、Bivatuzumab、Lorvotuzumab、cBR96和Glematumamab，或其抗原结合片段。
在可选的实施方案中，所述的抗体药物偶联物具有如下式所示的结构：
Figure PCTCN2021082854-appb-000028
Figure PCTCN2021082854-appb-000029
Figure PCTCN2021082854-appb-000030
Figure PCTCN2021082854-appb-000031
Figure PCTCN2021082854-appb-000032
其中，n为0至10的非零整数或小数，优选为1-10之间的整数或小数；更优选为2至8，可以为整数，也可以为小数；最优选为3至8，可以为整数，也可以为小数。
在可选的实施方案中，所述的药物组合物中所述的抗体药物偶联物具有如下式所示的结构：
Figure PCTCN2021082854-appb-000033
其中，n为3至8，n是小数或整数。
本披露提供一种药物组合物，其包含：(a)约10mg/mL至约30mg/mL的所述抗体药物偶联物，(b)约0.05mg/mL至约0.5mg/mL的聚山梨酯，(c)约60mg/mL至约90mg/mL的糖，和(d)约5mM至约20mM的缓冲剂；所述组合物pH为4.8至5.2；
其中，所述抗体药物偶联物具有如下式所示的结构：
Figure PCTCN2021082854-appb-000034
其中，n为3至8，n是小数或整数。
本披露提供一种药物组合物，其包含：(a)约20mg/mL至约22mg/mL的抗体药物偶联物，(b)约0.2mg/mL的聚山梨酯80，(c)约80mg/mL的蔗糖，和(d)约10mM琥珀酸盐缓冲剂，所述药物组合物的pH为5.0至5.1；
其中，所述抗体药物偶联物具有如下式所示的结构：
Figure PCTCN2021082854-appb-000035
其中，n为3至8，n是小数或整数。
本披露还提供一种含抗体药物偶联物的冻干制剂，其特征在于所述制剂复溶后可形成如上所述的药物组合物。
本披露还提供一种制备含抗体药物偶联物的冻干制剂的方法，其中包括将如上所述的药物组合物冷冻干燥的步骤。
在可选的实施方案中，在制备包含抗体药物偶联物的冻干制剂的方法中所述冷冻干燥依次包括预冻、一次干燥和二次干燥的步骤。通过冷冻制剂和随后在适于一次干燥的温度使水升华，进行冷冻干燥。在此条件下，产物温度低于制剂的低共熔点或坍塌温度。通常，一次干燥的温度范围为约-30至25℃(假设产物在一次干燥过程中保持冷冻)。制剂、容纳样品的容器(例如，玻璃小瓶)的大小和类型以及液体的体积决定了干燥所需的时间，所述时间的范围可为几小时至几天(例如40-60小时)。二次干燥阶段可在约0-40℃进行，这主要取决于容器的类型和大小以及采用的蛋白的类型。二次干燥时间由产物中的期望残余水分水平决定，通常需要至少约5小时。通常，低压冻干的制剂的含水量小于约5％，优选小于约3％。压力可与在一次干燥步骤中应用的压力相同，优选的，二次干燥的压力低于一次干燥。冷冻干燥条件可以随制剂和小瓶大小而变化。
在本披露的一个可选实施例中，将5mL的药物组合物原液进行冻干，冻干程 序如下所示：预冻温度为-5℃或-45℃，一次干燥的温度为-20℃，真空度为10Pa，二次干燥的的温度为25℃，真空度为1Pa。
在一些实施方案中，冻干制剂于2-8℃稳定至少3个月，至少6个月，至少12个月，至少18个月或至少24个月。在一些实施方案中，该冻干制剂于40℃稳定至少7天，至少14天或至少28天。
本披露还提供一种包含抗体药物偶联物的冻干制剂，所述制剂通过将如上所述的包含抗HER2抗体药物偶联物的药物组合物冷冻干燥获得。
本披露还提供一种含抗体药物偶联物的复溶溶液，其特征在于所述复溶溶液是通过将如上所述的冻干制剂复溶获得。
本披露还提供制备上述复溶溶液的方法，其中包括将前述冻干制剂经复溶的步骤，其复溶所用的溶液选自但不限于注射用水、生理盐水或葡萄糖溶液。
在可选的实施方案中，所述的复溶溶液包含如下组分：
(a)约10mg/mL至30mg/mL的所述抗体药物偶联物，(b)约0.05mg/mL至0.5mg/mL的聚山梨酯，(c)约60mg/mL至90mg/mL的糖，和(d)约5mM至20mM的缓冲剂；所述复溶溶液pH为4.8-5.2。
在可选的实施方案中，所述的复溶溶液包含如下组分：
(a)约20mg/mL至22mg/mL的抗体药物偶联物，(b)约0.2mg/mL的聚山梨酯80，(c)约80mg/mL的蔗糖，和(d)约10mM琥珀酸盐缓冲剂，所述复溶溶液pH为5.0-5.1。
本披露还提供一种制品，其包括容器，该容器中装有如上所述的药物组合物、冻干制剂或复溶溶液。在一些实施方案中，该容器为中性硼硅玻璃管制注射剂瓶。
本披露还提供前述的药物组合物或冻干制剂或复溶溶液或制品在制备治疗或预防肿瘤的药物中的应用。
本披露还提供治疗疾病的方法，包括提供前述的药物组合物或冻干制剂或复溶溶液或制品。
本披露还提供作为药物的前述的药物组合物，或冻干制剂，或复溶溶液，或制品，优选的，所述药物用于治疗或预防肿瘤疾病。
在可选的实施方案中，所述的疾病或肿瘤为与HER2、HER3、B7H3或EGFR表达相关的癌症。
在可选的实施方案中，所述癌症选自乳腺癌、卵巢癌、宫颈癌、子宫癌、前列腺癌、肾癌、尿道癌、膀胱癌、肝癌、胃癌、子宫内膜癌、唾液腺癌、食道癌、黑色素瘤、神经胶质瘤、神经母细胞瘤、肉瘤、肺癌、结肠癌、直肠癌、结直肠癌、白血病、骨癌、皮肤癌、甲状腺癌、胰腺癌和淋巴瘤。
如本领域技术人员所熟知的，本披露中所述各个实施方案的一项、一些或所有特性可以进一步组合以形成本披露的其它实施方案。本披露的以上实施方案和通过组合得到的其他实施方案通过下面的详述进一步说明。
本披露提供一种更利于生产和给药，性能稳定的药物组合物。具体地，本披露所述的药物组合物包含抗体药物偶联物和缓冲剂。
术语
为了更容易理解本披露，以下具体定义了某些技术和科学术语。除非在本文中另有明确定义，本文使用的所有其它技术和科学术语都具有本披露所属领域的一般技术人员通常理解的含义。
本披露将申请PCT/CN2019/107873(WO2020/063676)中的全部内容引入本申请。
“抗体药物偶联物(antibody drug conjugate，ADC)”是把抗体或者抗体片段通过稳定的化学接头化合物与具有生物活性的细胞毒素或具有细胞杀伤活性的小分子药物相连，充分利用了抗体对肿瘤细胞特异或高表达抗原结合的特异性和细胞毒素的高效性，避免对正常细胞的毒副作用。与以往传统的化疗药物相比，抗体药物偶联物能精准地结合肿瘤细胞并降低将对正常细胞的影响。
“缓冲剂”指通过其酸-碱共轭组分的作用而耐受pH变化的缓冲剂。将pH控制在适当范围中的缓冲剂的例子包括醋酸盐、琥珀酸盐、葡萄糖酸盐、组氨酸盐、草酸盐、乳酸盐、磷酸盐、枸橼酸盐、酒石酸盐、延胡索酸盐、甘氨酰甘氨酸和其它有机酸缓冲剂。
“组氨酸盐缓冲剂”是包含组氨酸根离子的缓冲剂。组氨酸盐缓冲剂的实例包括组氨酸-盐酸盐，组氨酸-醋酸盐，组氨酸-磷酸盐，组氨酸-硫酸盐等缓冲剂，优选组氨酸-醋酸盐缓冲剂，组氨酸-醋酸盐缓冲剂是组氨酸与醋酸配制而成，组氨酸盐酸盐缓冲剂是组氨酸与盐酸配制而成。
“枸橼酸盐缓冲剂”是包括枸橼酸根离子的缓冲剂。枸橼酸盐缓冲剂的实例包括枸橼酸-枸橼酸钠、枸橼酸-枸橼酸钾、枸橼酸-枸橼酸钙、枸橼酸-枸橼酸镁等。优选的枸橼酸盐缓冲剂是枸橼酸-枸橼酸钠。
“琥珀酸盐缓冲剂”是包括琥珀酸根离子的缓冲剂。琥珀酸盐缓冲剂的实例包括琥珀酸-琥珀酸钠、琥珀酸-琥珀酸钾、琥珀酸-琥珀酸钙盐等。优选的琥珀酸盐缓冲剂是琥珀酸-琥珀酸钠。示例性的，所述的琥珀酸-琥珀酸钠可由琥铂酸与氢氧化钠配制而成，或由琥铂酸与琥珀酸钠配制而成。
“磷酸盐缓冲剂”是包括磷酸根离子的缓冲剂。磷酸盐缓冲剂的实例包括磷酸氢二钠-磷酸二氢钠、磷酸氢二钠-磷酸二氢钾、磷酸氢二钠-枸橼酸等。优选的磷酸盐缓冲剂是磷酸氢二钠-磷酸二氢钠。
“醋酸盐缓冲剂”是包括醋酸根离子的缓冲剂。醋酸盐缓冲剂的实例包括醋酸-醋酸钠、醋酸组氨酸盐、醋酸-醋酸钾、醋酸醋酸钙、醋酸-醋酸镁等。优选的醋酸盐缓冲剂是醋酸-醋酸钠。
“药物组合物”表示含有一种或多种本文所述抗体药物偶联物或其生理学上/可药用的盐或前体药物与其他化学组分的混合物，所述其他组分例如生理学/可药用 的载体和赋形剂。药物组合物的目的是保持抗体活性成分的稳定性，促进对生物体的给药，利于活性成分的吸收进而发挥生物活性。
本披露中，“药物组合物”和“制剂”并不互相排斥。
本披露中所述药物组合物为溶液形式，若无特殊说明，其中的溶剂均为水。
“冻干制剂”表示液体或溶液形式的药物组合物或液体或溶液制剂经真空冷冻干燥步骤之后获得的制剂或药物组合物。
本文所用术语“约”、“大约”是指数值在由本领域一般技术人员所测定的具体值的可接受误差范围内，所述数值部分取决于怎样测量或测定(即测量体系的限度)。例如，在本领域每一次实行中“约”可意味着在1内或超过1的标准差。或者，“约”或“基本上包含”可意味着至多20％的范围。此外，特别对于生物学系统或过程而言，该术语可意味着至多一个数量级或数值的至多5倍。除非另外说明，否则当具体值在本申请和权利要求中出现时，“约”或“基本上包含”的含义应该假定为在该具体值的可接受误差范围内。
本披露所述的药物组合物能够达到一种稳定的效果：其中的抗体药物偶联物在贮藏后基本上保留其物理稳定性和/或化学稳定性和/或生物学活性的药物组合物，优选地，药物组合物在贮藏后基本上保留其物理和化学稳定性以及其生物学活性。贮藏期一般基于药物组合物的预定保存期来选择。目前有多种测量蛋白质稳定性的分析技术，可测量在选定温度贮藏选定时间段后的稳定性。
稳定的制剂是在下述情况下没有观察到显著变化的制剂：在冷藏温度(2-8℃)保存至少3个月、优选6个月、更优选1年，且甚至更优选地多达2年。另外，稳定的液体制剂包括这样的液体制剂：其在包括25℃的温度保存包括1个月、3个月、6个月在内的时段后表现出期望的特征。稳定性的典型的例子：通过SEC-HPLC测得，通常不超过约10％、优选不超过约5％的抗体单体发生聚集或降解。通过视觉分析，制剂是淡黄色近无色澄明液体或者无色，或澄清至稍微乳白色。所述制剂的浓度、pH和重量克分子渗透压浓度具有不超过±10％变化。通常观察到不超过约10％、优选不超过约5％的减少。通常形成不超过约10％、优选不超过约5％的聚集。
如果在目检颜色和/或澄清度后，或者通过UV光散射、尺寸排阻色谱法(SEC)和动态光散射(DLS)测得，抗体药物偶联物没有显示出显著的聚集增加、沉淀和/或变性，那么所述抗体药物偶联物在药物制剂中“保留它的物理稳定性”。蛋白构象的变化可以通过荧光光谱法(其确定蛋白三级结构)和通过FTIR光谱法(其确定蛋白二级结构)来评价。
如果抗体药物偶联物没有显示出显著的化学改变，那么所述抗体在药物制剂中“保留它的化学稳定性”。通过检测和定量化学上改变的形式的蛋白，可以评估化学稳定性。经常改变蛋白化学结构的降解过程包括水解或截短(通过诸如尺寸排阻色谱法和CE-SDS等方法来评价)、氧化(通过诸如与质谱法或MALDI/TOF/MS结 合的肽谱法等方法来评价)、脱酰胺作用(通过诸如离子交换色谱法、毛细管等电聚焦、肽谱法、异天冬氨酸测量等方法来评价)和异构化(通过测量异天冬氨酸含量、肽谱法等来评价)。
如果抗体药物偶联物在给定时间的生物活性是在制备药物制剂时表现出的生物活性的预定范围内，那么所述抗体药物偶联物在药物制剂中“保留它的生物活性”。
本披露所用氨基酸三字母代码和单字母代码如J.biol.chem,243,p3558(1968)中所述。
本披露所述的“抗体”指免疫球蛋白，完整抗体是由两条相同的重链和两条相同的轻链通过链间二硫键连接而成的四肽链结构。免疫球蛋白重链恒定区的氨基酸组成和排列顺序不同，故其抗原性也不同。据此，可将免疫球蛋白分为五类，或称为免疫球蛋白的同种型，即IgM、IgD、IgG、IgA和IgE，其相应的重链分别为μ链、δ链、γ链、α链、和ε链。同一类Ig根据其铰链区氨基酸组成和重链二硫键的数目和位置的差别，又可分为不同的亚类，如IgG可分为IgG1、IgG2、IgG3、IgG4。轻链通过恒定区的不同分为κ链或λ链。五类Ig中每类Ig都可以有κ链或λ链。本披露所述的抗体优选为针对靶细胞上细胞表面抗原的特异性抗体，非限制性的实施例为以下抗体：抗HER2(ErbB2)抗体、抗EGFR抗体、抗B7-H3抗体、抗c-Met抗体、抗HER3(ErbB3)抗体、抗HER4(ErbB4)抗体、抗CD20抗体、抗CD22抗体、抗CD30抗体、抗CD33抗体、抗CD44抗体、抗CD56抗体、抗CD70抗体、抗CD73抗体、抗CD105抗体、抗CEA抗体、抗A33抗体、抗Cripto抗体、抗EphA2抗体、抗G250抗体、抗MUCl抗体、抗Lewis Y抗体、抗VEGFR抗体、抗GPNMB抗体、抗Integrin抗体、抗PSMA抗体、抗Tenascin-C抗体、抗SLC44A4抗体或抗Mesothelin抗体中一个或多个；优选为曲妥珠单抗(Trastuzumab，商品名Herceptin)、帕妥珠单抗(Pertuzumab，也被称作2C4，商品名Perjeta)、尼妥珠单抗(Nimotuzumab，商品名泰欣生)、Enoblituzumab、Emibetuzumab、Inotuzumab、Pinatuzumab、Brentuximab、Gemtuzumab、Bivatuzumab、Lorvotuzumab、cBR96和Glematumamab。
抗体重链和轻链靠近N端的约110个氨基酸的序列变化很大，为可变区(Fv区)；靠近C端的其余氨基酸序列相对稳定，为恒定区。可变区包括3个高变区(HVR)和4个序列相对保守的框架区(FR)。3个高变区决定抗体的特异性，又称为互补性决定区(CDR)。每条轻链可变区(LCVR)和重链可变区(HCVR)由3个CDR区4个FR区组成，从氨基端到羧基端依次排列的顺序为：FR1，CDR1，FR2，CDR2，FR3，CDR3，FR4。轻链的3个CDR区指LCDR1、LCDR2、和LCDR3；重链的3个CDR区指HCDR1、HCDR2和HCDR3。本披露所述的抗体或抗原结合片段的LCVR区和HCVR区的CDR氨基酸残基在数量和位置符合已知的Kabat编号规则(LCDR1-3，HCDR1-3)。
在本披露中，本披露所述的抗体轻链可进一步包含轻链恒定区，所述的轻链恒定区包含人源或鼠源的κ、λ链或其变体。
在本披露中，本披露所述的抗体重链可进一步包含重链恒定区，所述的重链恒定区包含人源或鼠源的IgG1、IgG2、IgG3、IgG4或其变体。
本披露的抗体包括鼠源抗体、嵌合抗体、人源化抗体，优选人源化抗体。
术语“鼠源抗体”在本披露中为根据本领域知识和技能用鼠制备抗体。制备时用特定抗原注射试验对象，然后分离表达具有所需序列或功能特性的抗体的杂交瘤。
术语“嵌合抗体(chimeric antibody)”，是将鼠源性抗体的可变区与人抗体的恒定区融合而成的抗体，可以减轻鼠源性抗体诱发的免疫应答反应。建立嵌合抗体，要先建立分泌鼠源性特异性单抗的杂交瘤，然后从小鼠杂交瘤细胞中克隆可变区基因，再根据需要克隆人抗体的恒定区基因，将小鼠可变区基因与人恒定区基因连接成嵌合基因后插入人载体中，最后在真核工业系统或原核工业系统中表达嵌合抗体分子。
术语“人源化抗体(humanized antibody)”，也称为CDR移植抗体(CDR-grafted antibody)，是指将小鼠的CDR序列移植到人的抗体可变区框架，即不同类型的人种系抗体构架序列中产生的抗体。可以克服嵌合抗体由于携带大量小鼠蛋白成分，从而诱导的强烈的异源性反应。此类构架序列可以从包括种系抗体基因序列的公共DNA数据库或公开的参考文献获得。如人重链和轻链可变区基因的种系DNA序列可以在“VBase”人种系序列数据库获得，以及在Kabat，E.A.等人，1991Sequences of Proteins of Immunological Interest，第5版中找到。为避免免疫原性下降的同时，引起的活性下降，可对所述的人抗体可变区框架序列进行最少反向突变或回复突变，以保持活性。本披露的人源化抗体也包括进一步由噬菌体展示对CDR进行亲和力成熟后的人源化抗体。
术语“裸抗体”，是指未与异源模块(例如细胞毒性模块)或放射性标记物缀合的抗体。
本披露中所述的“抗体的抗原结合片段可以指具有抗原结合活性的Fab片段，Fab’片段，F(ab’) 2片段，以及与抗原结合的Fv片段scFv片段。Fv片段含有抗体重链可变区和轻链可变区，但没有恒定区，并具有全部抗原结合位点的最小抗体片段。一般地，Fv抗体还包含在VH和VL结构域之间的多肽接头，且能够形成抗原结合所需的结构。也可以用不同的连接物将两个抗体可变区连接成一条多肽链，称为单链抗体(single chain antibody)或单链Fv(sFv)。
本披露的术语“抗原结合位点”指抗原上连续或不连续的，由本披露抗体或抗原结合片段识别的三维空间位点。
本披露中所述的“ADCC”，即antibody-dependent cell-mediated cytotoxicity，抗体依赖的细胞介导的细胞毒作用，是指表达Fc受体的细胞通过识别抗体的Fc段直接杀伤被抗体包被的靶细胞。可通过对IgG上Fc段的修饰，降低或消除抗体的 ADCC效应功能。所述的修饰指在抗体的重链恒定区进行突变，如选自IgG1的N297A、L234A、L235A；IgG2/4嵌合体，IgG4的F234A/L235A突变。
本披露中所述的突变序列中的“突变”包括但不限于“回复突变”、“保守修饰”或“保守置换或取代”。本披露中所述的“保守修饰”或“保守置换或取代”是指具有类似特征(例如电荷、侧链大小、疏水性/亲水性、主链构象和刚性等)的其它氨基酸置换蛋白中的氨基酸，使得可频繁进行改变而不改变蛋白的生物学活性。本领域技术人员知晓，一般而言，多肽的非必需区域中的单个氨基酸置换基本上不改变生物学活性(参见例如Watson等(1987)Molecular Biology of the Gene,The Benjamin/Cummings Pub.Co.,第224页，(第4版))。另外，结构或功能类似的氨基酸的置换不大可能破环生物学活性。
本披露所述的“突变序列”是指对本披露的核苷酸序列和/或氨基酸序列进行适当的替换、插入或缺失等突变修饰情况下，得到的与本披露的核苷酸序列和/或氨基酸序列具有不同百分比序列同一性程度的核苷酸序列和/或氨基酸序列。本披露中所述的序列同一性可以至少为85％、90％或95％，优选至少为95％。非限制性的实施例包括85％，86％，87％，88％，89％，90％，91％，92％，93％，94％，95％，96％，97％，98％，99％，100％。两个序列之间的序列比较和同一性百分比测定可以通过National Center For Biotechnology Institute网站上可得的BLASTN/BLASTP算法的默认设置来进行。
术语“接头单元”或“连接片段”或“连接单元”是指一端与抗体或其抗原结合片段连接而另一端与药物相连的化学结构片段或键，也可以连接其他接头后再与抗体或药物相连。本披露的优选方案表示为L和L 1至L 4，其中L 1端与抗体相连，L 4端与结构单元Y相连后与化合物或毒素相连。
接头，包括延伸物、间隔物和氨基酸单元，可以通过本领域已知方法合成，诸如US2005-0238649A1中所记载的。接头可以是便于在细胞中释放药物的“可切割接头”。例如，可使用酸不稳定接头(例如腙)、蛋白酶敏感(例如肽酶敏感)接头、光不稳定接头、二甲基接头、或含二硫化物接头(Chari等,Cancer Research 52:127-131(1992)；美国专利No.5,208,020)。
本披露工程化的抗体或抗原结合片段可用常规方法制备和纯化。比如，编码重链和轻链的cDNA序列，可以克隆并重组至GS表达载体。重组的免疫球蛋白表达载体可以稳定地转染CHO细胞。作为一种更推荐的现有技术，哺乳动物类表达系统会导致抗体的糖基化，特别是在Fc区的高度保守N端位点。阳性的克隆在生物反应器的无血清培养基中扩大培养以生产抗体。分泌了抗体的培养液可以用常规技术纯化。比如，用含调整过的缓冲液的A或G Sepharose FF柱进行纯化。洗去非特异性结合的组分。再用PH梯度法洗脱结合的抗体，用SDS-PAGE检测抗体片段，收集。抗体可用常规方法进行过滤浓缩。可溶的混合物和多聚体，也可以用常规方法去除，比如分子筛、离子交换。得到的产物需立即冷冻，如-70℃， 或者冻干。
术语“烷基”指饱和脂肪族烃基团，其为包含1至20个碳原子的直链或支链基团，优选含有1至12个碳原子的烷基，更优选含有1至10个碳原子的烷基，最优选含有1至6个碳原子的烷基。非限制性实例包括甲基、乙基、正丙基、异丙基、正丁基、异丁基、叔丁基、仲丁基、正戊基、1,1-二甲基丙基、1,2-二甲基丙基、2,2-二甲基丙基、1-乙基丙基、2-甲基丁基、3-甲基丁基、正己基、1-乙基-2-甲基丙基、1,1,2-三甲基丙基、1,1-二甲基丁基、1,2-二甲基丁基、2,2-二甲基丁基、1,3-二甲基丁基、2-乙基丁基、2-甲基戊基、3-甲基戊基、4-甲基戊基、2,3-二甲基丁基、正庚基、2-甲基己基、3-甲基己基、4-甲基己基、5-甲基己基、2,3-二甲基戊基、2,4-二甲基戊基、2,2-二甲基戊基、3,3-二甲基戊基、2-乙基戊基、3-乙基戊基、正辛基、2,3-二甲基己基、2,4-二甲基己基、2,5-二甲基己基、2,2-二甲基己基、3,3-二甲基己基、4,4-二甲基己基、2-乙基己基、3-乙基己基、4-乙基己基、2-甲基-2-乙基戊基、2-甲基-3-乙基戊基、正壬基、2-甲基-2-乙基己基、2-甲基-3-乙基己基、2,2-二乙基戊基、正癸基、3,3-二乙基己基、2,2-二乙基己基，及其各种支链异构体等。更优选的是含有1至6个碳原子的低级烷基，非限制性的实施例包括甲基、乙基、正丙基、异丙基、正丁基、异丁基、叔丁基、仲丁基、正戊基、1,1-二甲基丙基、1,2-二甲基丙基、2,2-二甲基丙基、1-乙基丙基、2-甲基丁基、3-甲基丁基、正己基、1-乙基-2-甲基丙基、1,1,2-三甲基丙基、1,1-二甲基丁基、1,2-二甲基丁基、2,2-二甲基丁基、1,3-二甲基丁基、2-乙基丁基、2-甲基戊基、3-甲基戊基、4-甲基戊基、2,3-二甲基丁基等。烷基可以是取代的或非取代的，当被取代时，取代基可以在任何可使用的连接点上被取代，所述取代基优选为一个或多个以下基团，其独立地选自烷基、烯基、炔基、烷氧基、烷硫基、烷基氨基、卤素、巯基、羟基、硝基、氰基、环烷基、杂环烷基、芳基、杂芳基、环烷氧基、杂环烷氧基、环烷硫基、杂环烷硫基、氧代基。
术语“杂烷基”指含有一个或多个选自N、O或S的杂原子的烷基，其中烷基如上所定义。
术语“亚烷基”指饱和的直链或支链脂肪族烃基，其具有从母体烷的相同碳原子或两个不同的碳原子上除去两个氢原子所衍生的残基，其为包含1至20个碳原子的直链或支链基团，优选含有1至12个碳原子，更优选含有1至6个碳原子的亚烷基。亚烷基的非限制性实例包括但不限于亚甲基(-CH 2-)、1,1-亚乙基(-CH(CH 3)-)、1,2-亚乙基(-CH 2CH 2)-、1,1-亚丙基(-CH(CH 2CH 3)-)、1,2-亚丙基(-CH 2CH(CH 3)-)、1,3-亚丙基(-CH 2CH 2CH 2-)、1,4-亚丁基(-CH 2CH 2CH 2CH 2-)和1,5-亚丁基(-CH 2CH 2CH 2CH 2CH 2-)等。亚烷基可以是取代的或非取代的，当被取代时，取代基可以在任何可使用的连接点上被取代，所述取代基优选独立地任选选自烷基、烯基、炔基、烷氧基、烷硫基、烷基氨基、卤素、巯基、羟基、硝基、氰基、环烷基、杂环基、芳基、杂芳基、环烷氧基、杂环烷氧基、环烷硫基、杂环烷硫基 和氧代基中的一个或多个取代基所取代。
术语“烷氧基”指-O-(烷基)和-O-(非取代的环烷基)，其中烷基或环烷基的定义如上所述。烷氧基的非限制性实例包括：甲氧基、乙氧基、丙氧基、丁氧基、环丙氧基、环丁氧基、环戊氧基、环己氧基。烷氧基可以是任选取代的或非取代的，当被取代时，取代基优选为一个或多个以下基团，其独立地选自烷基、烯基、炔基、烷氧基、烷硫基、烷基氨基、卤素、巯基、羟基、硝基、氰基、环烷基、杂环烷基、芳基、杂芳基、环烷氧基、杂环烷氧基、环烷硫基、杂环烷硫基。
术语“环烷基”指饱和或部分不饱和单环或多环环状烃取代基，环烷基环包含3至20个碳原子，优选包含3至12个碳原子，更优选包含3至10个碳原子，最优选包含3至7个碳原子。单环环烷基的非限制性实例包括环丙基、环丁基、环戊基、环戊烯基、环己基、环己烯基、环己二烯基、环庚基、环庚三烯基、环辛基等；多环环烷基包括螺环、稠环和桥环的环烷基。
术语“杂环基”指饱和或部分不饱和单环或多环环状烃取代基，其包含3至20个环原子，其中一个或多个环原子为选自氮、氧或S(O) m(其中m是整数0至2)的杂原子，但不包括-O-O-、-O-S-或-S-S-的环部分，其余环原子为碳。优选包含3至12个环原子，其中1～4个是杂原子；更优选环烷基环包含3至10个环原子。单环杂环基的非限制性实例包括吡咯烷基、哌啶基、哌嗪基、吗啉基、硫代吗啉基、高哌嗪基等。多环杂环基包括螺环、稠环和桥环的杂环基。
术语“螺杂环基”指5至20元的单环之间共用一个原子(称螺原子)的多环杂环基团，其中一个或多个环原子为选自氮、氧或S(O) m(其中m是整数0至2)的杂原子，其余环原子为碳。其可以含有一个或多个双键，但没有一个环具有完全共轭的π电子系统。优选为6至14元，更优选为7至10元。根据环与环之间共用螺原子的数目将螺杂环基分为单螺杂环基、双螺杂环基或多螺杂环基，优选为单螺杂环基和双螺杂环基。更优选为4元/4元、4元/5元、4元/6元、5元/5元或5元/6元单螺杂环基。螺杂环基的非限制性实例包括：
Figure PCTCN2021082854-appb-000036
术语“稠杂环基”指5至20元，系统中的每个环与体系中的其他环共享毗邻的一对原子的多环杂环基团，一个或多个环可以含有一个或多个双键，但没有一个环具有完全共轭的π电子系统，其中一个或多个环原子为选自氮、氧或S(O) m(其中m是整数0至2)的杂原子，其余环原子为碳。优选为6至14元，更优选为7至10元。根据组成环的数目可以分为双环、三环、四环或多环稠杂环基，优选为双环或三环，更优选为5元/5元或5元/6元双环稠杂环基。稠杂环基的非限制性实例包括：
Figure PCTCN2021082854-appb-000037
术语“桥杂环基”指5至14元，任意两个环共用两个不直接连接的原子的多环杂环基团，其可以含有一个或多个双键，但没有一个环具有完全共轭的π电子系统，其中一个或多个环原子为选自氮、氧或S(O) m(其中m是整数0至2)的杂原子，其余环原子为碳。优选为6至14元，更优选为7至10元。根据组成环的数目可以分为双环、三环、四环或多环桥杂环基，优选为双环、三环或四环，更优选为双环或三环。桥杂环基的非限制性实例包括：
Figure PCTCN2021082854-appb-000038
所述杂环基环可以稠合于芳基、杂芳基或环烷基环上，其中与母体结构连接在一起的环为杂环基，其非限制性实例包括：
Figure PCTCN2021082854-appb-000039
等。
杂环基可以是任选取代的或非取代的，当被取代时，取代基优选为一个或多个以下基团，其独立地选自烷基、烯基、炔基、烷氧基、烷硫基、烷基氨基、卤素、巯基、羟基、硝基、氰基、环烷基、杂环烷基、芳基、杂芳基、环烷氧基、杂环烷氧基、环烷硫基、杂环烷硫基、氧代基。
术语“芳基”指具有共轭的π电子体系的6至14元全碳单环或稠合多环(也就是共享毗邻碳原子对的环)基团，优选为6至10元，例如苯基和萘基，优选苯基。所述芳基环可以稠合于杂芳基、杂环基或环烷基环上，其中与母体结构连接在一起的环为芳基环，其非限制性实例包括：
Figure PCTCN2021082854-appb-000040
Figure PCTCN2021082854-appb-000041
芳基可以是取代的或非取代的，当被取代时，取代基优选为一个或多个以下基团，其独立地选自烷基、烯基、炔基、烷氧基、烷硫基、烷基氨基、卤素、巯基、羟基、硝基、氰基、环烷基、杂环烷基、芳基、杂芳基、环烷氧基、杂环烷氧基、环烷硫基、杂环烷硫基。
术语“杂芳基”指包含1至4个杂原子、5至14个环原子的杂芳族体系，其中杂原子选自氧、硫和氮。杂芳基优选为5至10元，更优选为5元或6元，例如呋喃基、噻吩基、吡啶基、吡咯基、N-烷基吡咯基、嘧啶基、吡嗪基、咪唑基、四唑基等。所述杂芳基环可以稠合于芳基、杂环基或环烷基环上，其中与母体结构连接在一起的环为杂芳基环，其非限制性实例包括：
Figure PCTCN2021082854-appb-000042
杂芳基可以是任选取代的或非取代的，当被取代时，取代基优选为一个或多个以下基团，其独立地选自烷基、烯基、炔基、烷氧基、烷硫基、烷基氨基、卤素、巯基、羟基、硝基、氰基、环烷基、杂环烷基、芳基、杂芳基、环烷氧基、杂环烷氧基、环烷硫基、杂环烷硫基。
术语“氨基保护基”是为了使分子其它部位进行反应时氨基保持不变，用易于脱去的基团对氨基进行保护。非限制性的实施例包含9-芴甲氧羰基、叔丁氧羰基、乙酰基、苄基、烯丙基和对甲氧苄基等。这些基团可任选地被选自卤素、烷氧基或硝基中的1-3个取代基所取代。所述氨基保护基优选为9-芴甲氧羰基。
术语“环烷基烷基”指烷基被一个或多个环烷基取代，优选被一个环烷基取代，其中烷基如上所定义，其中环烷基如上所定义。
术语“卤代烷基”指烷基被一个或多个卤素取代，其中烷基如上所定义。
术语“氘代烷基”指烷基被一个或多个氘原子取代，其中烷基如上所定义。
术语“羟基”指-OH基团。
术语“卤素”指氟、氯、溴或碘。
术语“氨基”指-NH 2。
术语“硝基”指-NO 2。
“任选”或“任选地”意味着随后所描述地事件或环境可以但不必发生，该说明包括该事件或环境发生或不发生的场合。例如，“任选包含1-3个抗体重链可变区” 意味着特定序列的抗体重链可变区可以但不必须存在。
“取代的”指基团中的一个或多个氢原子，优选为最多5个，更优选为1～3个氢原子彼此独立地被相应数目的取代基取代。不言而喻，取代基仅处在它们的可能的化学位置，本领域技术人员能够在不付出过多努力的情况下确定(通过实验或理论)可能或不可能的取代。例如，具有游离氢的氨基或羟基与具有不饱和(如烯属)键的碳原子结合时可能是不稳定的。
术语载药量或“药物载量”是指抗体药物偶联物分子中每个抗体或其抗原结合片段上加载的细胞毒性药物平均数量，也可以表示为药物量和抗体量的比值，药物载量的范围可以是每个抗体或其抗原结合片段(Pc)连接0-12个，优选1-10个，更优选3-8个，最优选5.3-6.1个细胞毒性药物。在本披露的实施方式中，载药量表示为n，也可称为DAR(Drug-antibody Ratio)值，示例性的可以为1，2，3，4，5，6，7，8，9，10的平均值。可用常规方法如紫外-可见光光谱法(UV-Vis)、疏水色谱法(HIC)质谱、ELISA试验和HPLC特征鉴定偶联反应后每个ADC分子的药物平均数量。
可以用以下非限制性方法控制细胞毒性药物的载量，包括：
(1)控制连接试剂和单抗的摩尔比，
(2)控制反应时间和温度，
(3)选择不同的反应试剂。
常规的药物组合物的制备见中国药典。
术语“载体”用于本披露的药物，是指能改变药物进入人体的方式和在体内的分布、控制药物的释放速度并将药物输送到靶向器官的体系。药物载体释放和靶向系统能够减少药物降解及损失，降低副作用，提高生物利用度。如可作为载体的高分子表面活性剂由于其独特的两亲性结构，可以进行自组装，形成各种形式的聚集体，优选的实例如胶束、微乳液、凝胶、液晶、囊泡等。这些聚集体具有包载药物分子的能力，同时又对膜有良好的渗透性，可以作为优良的药物载体。
“给予”和“处理”当应用于动物、人、实验受试者、细胞、组织、器官或生物流体时，是指外源性药物、治疗剂、诊断剂或组合物与动物、人、受试者、细胞、组织、器官或生物流体的接触。“给予”和“处理”可以指例如治疗、药物代谢动力学、诊断、研究和实验方法。细胞的处理包括试剂与细胞的接触，以及试剂与流体的接触。“给予”和“处理”还意指通过试剂、诊断、结合组合物或通过另一种细胞体外和离体处理例如细胞。“处理”当应用于人、兽医学或研究受试者时，是指治疗处理、预防或预防性措施，研究和诊断应用。
“治疗”意指给予患者内用或外用治疗剂，例如包含本披露的任一种结合化合物的组合物，所述患者具有一种或多种疾病症状，而已知所述治疗剂对这些症状具有治疗作用。通常，在受治疗患者或群体中以有效缓解一种或多种疾病症状的量给予治疗剂，以诱导这类症状退化或抑制这类症状发展到任何临床可测量的程度。 有效缓解任何具体疾病症状的治疗剂的量(也称作“治疗有效量”)可根据多种因素变化，例如患者的疾病状态、年龄和体重，以及药物在患者产生需要疗效的能力。通过医生或其它专业卫生保健人士通常用于评价该症状的严重性或进展状况的任何临床检测方法，可评价疾病症状是否已被减轻。尽管本披露的实施方案(例如治疗方法或制品)在缓解每个目标疾病症状方面可能无效，但是根据本领域已知的任何统计学检验方法如Student t检验、卡方检验、依据Mann和Whitney的U检验、Kruskal-Wallis检验(H检验)、Jonckheere-Terpstra检验和Wilcoxon检验确定，其在统计学显著数目的患者中应当减轻目标疾病症状。
“有效量”包含足以改善或预防医学疾病的症状或病症的量。有效量还意指足以允许或促进诊断的量。用于特定患者或兽医学受试者的有效量可依据以下因素而变化：例如，待治疗的病症、患者的总体健康情况、给药的方法途径和剂量以及副作用严重性。有效量可以是避免显著副作用或毒性作用的最大剂量或给药方案。
“置换”是指溶解抗体蛋白的溶剂体系的置换，例如，使用稳定制剂的缓冲体系经物理操作方式将含抗体蛋白的高盐或高渗溶剂体系置换，从而使抗体蛋白存在于稳定制剂中。所称物理操作方式包括但不限于超滤、透析或离心后复溶。
附图说明
图1A：本披露ADC-19的血浆稳定性实验结果。
图1B：本披露ADC-18的血浆稳定性实验结果。
图1C：本披露ADC-20的血浆稳定性实验结果。
图2：本披露ADC-21、ADC-24对JIMT-1荷瘤小鼠药效评价。
图3：本披露ADC对人乳腺癌细胞SK-BR-3移植瘤裸小鼠的疗效评价。
图4：本披露ADC-25的血浆稳定性实验结果。
图5：本披露ADC对人脑星形胶质母细胞瘤U87MG裸小鼠移植瘤的的疗效。
图6：本披露ADC对人咽头癌胸水转移细胞Detroit 562裸小鼠移植瘤的疗效。
图7：本披露ADC对人胶质细胞瘤U87MG裸小鼠移植瘤的的疗效。
图8：处方筛选实验拟合趋势图，其中PS80的单位为10 -4g/mL；ADC-32蛋白浓度(以裸抗体浓度计)的单位为mg/mL。
具体实施方式
以下结合实施例进一步描述本披露，但这些实施例并非是对本披露范围的限制。本披露实施例中未注明具体条件的实验方法，通常按照常规条件，如参照冷泉港实验室出版的《抗体技术实验手册》，《分子克隆手册》；或按照原料或商品制造厂商所建议的条件。未注明具体来源的试剂，为市场购买的常规试剂。
一、抗体药物偶联物
化合物的结构是通过核磁共振(NMR)或质谱(MS)来确定的。NMR的测定是用 Bruker AVANCE-400核磁仪，测定溶剂为氘代二甲基亚砜(DMSO-d6)、氘代氯仿(CDCl 3)、氘代甲醇(CD 3OD)，内标为四甲基硅烷(TMS)，化学位移是以10 -6(ppm)作为单位给出。
MS的测定用FINNIGAN LCQAd(ESI)质谱仪(生产商：Thermo,型号：Finnigan LCQ advantage MAX)。
UPLC的测定用Waters Acquity UPLC SQD液质联用仪。
HPLC的测定使用安捷伦1200DAD高压液相色谱仪(Sunfire C18 150×4.6mm色谱柱)和Waters 2695-2996高压液相色谱仪(Gimini C18 150×4.6mm色谱柱)。
UV-HPLC的测定使用Thermo nanodrop2000紫外分光光度计。
增殖抑制率及IC 50值的测定用PHERA starFS酶标仪(德国BMG公司)。
薄层层析硅胶板使用烟台黄海HSGF254或青岛GF254硅胶板，薄层色谱法(TLC)使用的硅胶板采用的规格是0.15mm～0.2mm，薄层层析分离纯化产品采用的规格是0.4mm～0.5mm硅胶板。
柱层析一般使用烟台黄海200～300目硅胶为载体。
本披露的已知的起始原料可以采用或按照本领域已知的方法来合成，或可购买自ABCR GmbH & Co.KG，Acros Organnics，Aldrich Chemical Company，韶远化学科技(Accela ChemBio Inc)、达瑞化学品等公司。
实施例中如无特殊说明，反应均在氩气氛或氮气氛下进行。
氩气氛或氮气氛是指反应瓶连接一个约1L容积的氩气或氮气气球。
氢气氛是指反应瓶连接一个约1L容积的氢气气球。
加压氢化反应使用Parr 3916EKX型氢化仪和清蓝QL-500型氢气发生器或HC2-SS型氢化仪。
氢化反应通常抽真空，充入氢气，反复操作3次。
微波反应使用CEM Discover-S 908860型微波反应器。
实施例中如无特殊说明，反应中的溶液是指水溶液。
实施例中如无特殊说明，反应的温度为室温。
室温为最适宜的反应温度，温度范围是20℃～30℃。
实施例中pH＝6.5的PBS缓冲液的配制：取KH 2PO 4 8.5g，K 2HPO 4.3H 2O 8.56g，NaCl 5.85g，EDTA 1.5g置于瓶中，定容至2L，超声波使其全部溶解，摇匀即得。
纯化化合物采用的柱层析的洗脱剂的体系和薄层色谱法的展开剂的体系包括：A：二氯甲烷和异丙醇体系，B：二氯甲烷和甲醇体系，C：石油醚和乙酸乙酯体系，溶剂的体积比根据化合物的极性不同而进行调节，也可以加入少量的三乙胺和酸性或碱性试剂等进行调节。
本披露部分化合物是通过Q-TOF LC/MS来表征的。Q-TOF LC/MS使用安捷伦6530精确质量数四级杆-飞行时间质谱仪和安捷伦1290-Infinity超高效液相色谱仪(安捷伦Poroshell 300SB-C8 5μm，2.1×75mm色谱柱)。
实施例1-1
N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)-1-羟基环丙烷-1-甲酰胺1
Figure PCTCN2021082854-appb-000043
向依喜替康甲磺酸盐1b(2.0mg，3.76μmol，采用专利申请“EP0737686A1”公开的方法制备而得)中添加1mL N,N-二甲基甲酰胺，冰水浴冷却至0-5℃，滴加一滴三乙胺，搅拌至反应液变澄清。向反应液中依次加入1-羟基环丙基甲酸1a(1.4mg，3.7μmol，采用公知的方法“Tetrahedron Letters,25(12),1269-72；1984”制备而得)和4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(3.8mg，13.7μmol)，加毕，在0-5℃搅拌反应2小时。向反应液中加入5mL水淬灭反应，用乙酸乙酯(8mL×3)萃取反应液，合并有机相，用饱和氯化钠溶液(5mL×2)洗涤，有机相用无水硫酸钠干燥，过滤，将滤液减压浓缩，用薄层层析以展开剂体系B纯化所得残余物，得到标题产物1(1.6mg，产率：82.1％)。
MS m/z(ESI):520.2[M+1]
1H NMR(400MHz,CDCl 3):δ7.90-7.84(m,1H),7.80-7.68(m,1H),5.80-5.70(m,1H),5.62-5.54(m,2H),5.44-5.32(m,2H),5.28-5.10(m,2H),3.40-3.15(m,3H),2.44(s,3H),2.23(t,1H),2.06-1.75(m,2H),1.68-1.56(m,1H),1.22-1.18(m,2H),1.04-0.98(m,2H),0.89(t,3H).
实施例1-2
(S)-2-环丙基-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)-2-羟基乙酰胺2-A
(R)-2-环丙基-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15- 六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)-2-羟基乙酰胺2-B
Figure PCTCN2021082854-appb-000044
向化合物1b(4mg，7.53μmol)中加入2mL乙醇和0.4mL N,N-二甲基甲酰胺，氩气置换三次，冰水浴冷却至0-5℃，滴加0.3mL N-甲基吗啉，搅拌至反应液变澄清。向反应液中依次加入2-环丙基-2-羟基乙酸2a(2.3mg，19.8μmol，采用专利申请“WO2013106717”公开的方法制备而得)、1-羟基苯并三唑(3mg，22.4μmol)和1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐(4.3mg，22.4μmol)，加毕，在0-5℃搅拌反应1小时。撤去冰水浴，加热至30℃搅拌2小时。反应液减压浓缩，所得到的粗品化合物2用高效液相色谱法纯化(分离条件：色谱柱：XBridge Prep C18 OBD 5um 19*250mm；流动相：A-水(10mmol NH 4OAc)，B-乙腈，梯度洗脱，流速：18mL/min)，收集其相应组分，减压浓缩，得到标题产物(2-A：1.5mg，2-B：1.5mg)。
MS m/z(ESI):534.0[M+1]。
单一构型化合物2-B(较短保留时间)：
UPLC分析：保留时间1.06分钟，纯度：88％(色谱柱：ACQUITY UPLC BEHC18  1.7um 2.1*50mm，流动相：A-水(5mmol NH 4OAc),B-乙腈)。
1H NMR(400MHz,DMSO-d 6):δ8.37(d,1H),7.76(d,1H),7.30(s,1H),6.51(s,1H),5.58-5.56(m,1H),5.48(d,1H),5.41(s,2H),5.32-5.29(m,2H),3.60(t,1H),3.19-3.13(m,1H),2.38(s,3H),2.20-2.14(m,1H),1.98(q,2H),1.87-1.83(m,1H),1.50-1.40(m,1H),1.34-1.28(m,1H),0.86(t,3H),0.50-0.39(m,4H)。
单一构型化合物2-A(较长保留时间)：
UPLC分析：保留时间1.10分钟，纯度：86％(色谱柱：ACQUITY UPLC BEHC18 1.7um 2.1*50mm，流动相：A-水(5mmol NH 4OAc),B-乙腈)。
1H NMR(400MHz,DMSO-d 6):δ8.35(d,1H),7.78(d,1H),7.31(s,1H),6.52(s,1H),5.58-5.53(m,1H),5.42(s,2H),5.37(d,1H),5.32(t,1H),3.62(t,1H),3.20-3.15(m,2H),2.40(s,3H),2.25-2.16(m,1H),1.98(q,2H),1.87-1.82(m,1H),1.50-1.40(m,1H),1.21-1.14(m,1H),0.87(t,3H),0.47-0.35(m,4H)。
实施例1-3
(S)-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)-3,3,3-三氟-2-羟基丙酰
胺3-A
(R)-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)-3,3,3-三氟-2-羟基丙酰胺3-B
Figure PCTCN2021082854-appb-000045
Figure PCTCN2021082854-appb-000046
向化合物1b(5.0mg，9.41μmol)中添加2mL乙醇和0.4mL N,N-二甲基甲酰胺，冰水浴冷却至0-5℃，滴加0.3mL N-甲基吗啡啉，搅拌至反应液变澄清。向反应液中依次加入3,3,3-三氟-2-羟基丙酸3a(4.1mg，28.4μmol，供应商Alfa)、1-羟基苯并三唑(3.8mg，28.1μmol)和1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐(5.4mg，28.2μmol)，加毕，在0-5℃搅拌反应10分钟。撤去冰水浴，加热至30℃搅拌8小时。反应液减压浓缩，所得到的粗品化合物3用高效液相色谱法纯化(分离条件：色谱柱：XBridge Prep C18 OBD 5um 19*250mm；流动相：A-水(10mmol NH 4OAc)：B-乙腈，梯度洗脱，流速：18mL/min)，收集其相应组分，减压浓缩，得到标题产物(1.5mg，1.5mg)。
MS m/z(ESI):561.9[M+1]。
单一构型化合物(较短保留时间)：
UPLC分析：保留时间1.11分钟，纯度：88％(色谱柱：ACQUITY UPLC BEHC18 1.7um 2.1*50mm，流动相：A-水(5mmol NH 4OAc),B-乙腈)。
1H NMR(400MHz,DMSO-d 6):δ8.94(d,1H),7.80(d,1H),7.32(s,1H),7.20(d,1H),6.53(s,1H),5.61-5.55(m,1H),5.45-5.23(m,3H),5.15-5.06(m,1H),4.66-4.57(m,1H),3.18-3.12(m,1H),2.40(s,3H),2.26-2.20(m,1H),2.16-2.08(m,1H),2.02-1.94(m,1H),1.89-1.82(m,1H),1.50-1.40(m,1H),0.87(t,3H)。
单一构型化合物(较长保留时间)：
UPLC分析：保留时间1.19分钟，纯度：90％(色谱柱：ACQUITY UPLC BEHC18 1.7um 2.1*50mm，流动相：A-水(5mmol NH 4OAc),B-乙腈)。
1H NMR(400MHz,DMSO-d 6):δ8.97(d,1H),7.80(d,1H),7.31(s,1H),7.16(d,1H),6.53(s,1H),5.63-5.55(m,1H),5.45-5.20(m,3H),5.16-5.07(m,1H),4.66-4.57(m,1H),3.18-3.12(m,1H),2.40(s,3H),2.22-2.14(m,1H),2.04-1.95(m,2H),1.89-1.82(m,1H),1.50-1.40(m,1H),0.87(t,3H)。
实施例1-4
N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)-1-羟基环戊烷-1-甲酰胺4
Figure PCTCN2021082854-appb-000047
向化合物1b(3.0mg，5.64μmol)中添加1mL N,N-二甲基甲酰胺，冰水浴冷却至0-5℃，滴加一滴三乙胺，搅拌至反应液变澄清。向反应液中依次加入1-羟基-环戊烷甲酸4a(2.2mg，16.9μmol，采用专利申请“WO2013106717”公开的方法制备而得)和4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(4.7mg，16.9μmol)，加毕，在0-5℃搅拌反应1小时。向反应液中加入5mL水淬灭反应，用乙酸乙酯(10mL×3)萃取反应液，合并有机相，用饱和氯化钠溶液(5mL×2)洗涤，有机相用无水硫酸钠干燥，过滤，将滤液减压浓缩，用薄层层析以展开剂体系B纯化所得残余物，得到标题产物4(2.5mg，产率：80.9％)。
MS m/z(ESI):548.0[M+1]。
1H NMR(400MHz,CDCl 3):δ7.73-7.62(m,2H),5.75-5.62(m,1H),5.46-5.32(m,2H),5.26-5.10(m,1H),3.30-3.10(m,1H),2.43(s,3H),2.28-2.20(m,2H),2.08-1.84(m,8H),1.69-1.58(m,2H),1.04-1.00(m,2H),0.89(t,3H)。
实施例1-5
N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)-1-(羟甲基)环丙烷-1-甲酰胺5
Figure PCTCN2021082854-appb-000048
向化合物1b(2.0mg，3.76μmol)中添加1mL N,N-二甲基甲酰胺，冰水浴冷却至0-5℃，滴加一滴三乙胺，搅拌至反应液变澄清。向反应液中依次加入1-(羟甲基)-环戊烷甲酸5a(0.87mg，7.5μmol，采用专利申请“WO201396771”公开的方法制备而得)和4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(2mg，7.24μmol)，加毕，在0-5℃搅拌反应2小时。向反应液中加入5mL水淬灭反应，用乙酸乙酯(8mL×3)萃取反应液，合并有机相，用饱和氯化钠溶液(5mL×2)洗涤，有机相用无水硫酸钠干燥，过滤，将滤液减压浓缩，用薄层层析以展开剂体系B纯化所得残余物，得到标题产物5(1.0mg，产率：50％)。
MS m/z(ESI):533.9[M+1]。
1H NMR(400MHz,CDCl 3):δ8.07(s,1H),7.23-7.18(m,2H),6.71-6.64(m,1H),6.55-6.51(m,1H),5.36-5.27(m,2H),4.67-4.61(m,2H),3.53-3.48(m,1H),3.30-3.22(m,2H),3.18-3.13(m,1H),2.71-2.61(m,2H),2.35-2.28(m,1H),2.04-1.91(m,4H),1.53-1.40(m,3H),0.91-0.75(m,4H)。
实施例1-6
N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)-1-(羟基甲基)环丁烷-1-甲酰胺6
Figure PCTCN2021082854-appb-000049
Figure PCTCN2021082854-appb-000050
向化合物1b(3.0mg，5.64μmol)中添加1mL N,N-二甲基甲酰胺，冰水浴冷却至0-5℃，滴加一滴三乙胺，搅拌至反应液变澄清。向反应液中依次加入1-(羟基甲基)环丁烷-1-甲酸6a(2.2mg，16.9μmol；采用文献“Journal of the American Chemical Society,2014,vol.136,#22,p.8138-8142”公开的方法制备而得)和4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(4.7mg，16.9μmol)，加毕，在0-5℃搅拌反应1小时。向反应液中加入5mL水淬灭反应，用乙酸乙酯(10mL×3)萃取反应液，合并有机相，用饱和氯化钠溶液(5mL×2)洗涤，有机相用无水硫酸钠干燥，过滤，将滤液减压浓缩，用薄层层析以展开剂体系B纯化所得残余物，得到标题产物6(2.1mg，产率：67.9％)。
MS m/z(ESI):548.0[M+1]。
1H NMR(400MHz,DMSO-d 6):δ7.85-7.62(m,1H),6.88(br，1H),5.87-5.48(m，2H),5.47-5.33(m，1H),5.31-5.06(m，1H),4.25-3.91(m,2H),3.25(br,1H),2.60-2.32(m,3H),2.23(t,1H),2.15-1.95(m,3H),1.70-1.56(m,2H),1.41-1.17(m,9H),1.03(s,1H),0.95-0.80(m,2H)。
实施例1-7
N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)-1-羟基环丁烷-1-甲酰胺7
Figure PCTCN2021082854-appb-000051
Figure PCTCN2021082854-appb-000052
向化合物1b(3.0mg，5.64μmol)中添加2mL乙醇和0.4mL N,N-二甲基甲酰胺，冰水浴冷却至0-5℃，滴加0.3mL N-甲基吗啡啉，搅拌至反应液变澄清。向反应液中依次加入1-羟基环丁烷甲酸7a(2.0mg，17.22μmol，供应商药石)，1-羟基苯并三唑(2.3mg，17.0μmol)和1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐(3.2mg，16.7μmol)，加毕，在0-5℃搅拌反应10分钟。撤去冰水浴，常温搅拌2小时。反应液减压浓缩，用薄层层析以展开剂体系B纯化所得残余物，得到标题产物7(2.5mg，产率：83.1％)。
MS m/z(ESI):534.0[M+1]。
1H NMR(400MHz,DMSO-d 6):δ8.28(d,1H),7.75(d,1H),7.29(s,1H),6.51(s,1H),6.12(s,1H),5.59-5.51(m,1H),5.41(s,2H),5.20-5.01(m,2H),3.27-3.17(m,1H),3.15-3.05(m,1H),2.71-2.63(m,1H),2.37(s,3H),2.12-2.05(m,1H),2.03-1.94(m,2H),1.92-1.78(m,4H),1.50-1.42(m,1H),0.90-0.83(m,4H)。
实施例1-8
1-(((S)-7-苄基-20-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)-3,6,9,12,15-五氧代-2,5,8,11,14-五氮杂二十烷基)氧基)-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)环丙烷-1-甲酰胺8
Figure PCTCN2021082854-appb-000053
Figure PCTCN2021082854-appb-000054
第一步
1-((2-((((9H-芴-9-基)甲氧基)羰基)氨基)乙酰氨基)甲氧基)环丙烷-1-羧酸苄酯8c
将1-羟基环丙烷-1-羧酸苄酯8a(104mg，0.54mmol；采用专利申请“US2005/20645”公开的方法制备而得)和2-((((9H-芴-9-基)甲氧基)羰基)氨基)乙酰氨基)甲基乙酸酯8b(100mg，0.27mmol；采用专利申请“CN105829346A”公开的方法制备而得)加入反应瓶，加入5mL四氢呋喃，氩气置换三次，冰水浴降温至0-5℃，加入叔丁醇钾(61mg，0.54mmol)，撤去冰浴，升至室温搅拌10分钟，加入20mL冰水，用乙酸乙酯(5mL×2)和氯仿(5mL×5)萃取，合并有机相并浓缩。所得残余物溶于3mL 1,4-二氧六环中，加入0.6mL水，加入碳酸氢钠(27mg，0.32mmol)和氯甲酸-9-芴甲酯(70mg，0.27mmol)，室温搅拌1小时。加入20mL水，用乙酸乙酯(8mL×3)萃取，有机相用饱和氯化钠溶液(20mL)洗涤，无水硫酸钠干燥，过滤，滤液减压浓缩，用硅胶柱色谱法以展开剂体系B纯化所得残余物，得到标题产物8c(100mg，产率：73.6％)。
MS m/z(ESI):501.0[M+1]。
第二步
1-((2-((((9H-芴-9-基)甲氧基)羰基)氨基)乙酰氨基)甲氧基)环丙烷-1-羧酸8d
将化合物8c(50mg，0.10mmol)溶于3mL四氢呋喃和乙酸乙酯(V:V＝2:1)混合溶剂中，加入钯碳(25mg，含量10％)，氢气置换三次，室温搅拌反应1小时。反应液用硅藻土过滤，滤饼用四氢呋喃淋洗，滤液浓缩，得到标题产物8d(41mg，产率：100％)。
MS m/z(ESI):411.0[M+1]。
第三步
(9H-芴-9-基)甲基(2-(((1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基羰基)环丙氧基)甲基)氨基)-2-氧代乙基)氨基甲酸酯8e
将化合物1b(7mg，0.013mmol)加入反应瓶，加入1mL N,N-二甲基甲酰胺，氩气置换三次，冰水浴降温至0-5℃，滴加一滴三乙胺，加入化合物8d(7mg，0.017mmol)的0.5mL N,N-二甲基甲酰胺溶液，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(7mg，0.026mmol)，冰浴搅拌反应35分钟。加入10mL水，用乙酸乙酯(5mL×3)萃取，有机相用饱和氯化钠溶液(10mL)洗涤，无水硫酸钠干燥，过滤，滤液减压浓缩，用薄层层析以展开剂体系B纯化所得残余物，得到标题产物8e(8.5mg，产率78.0％)。
MS m/z(ESI):828.0[M+1]。
第四步
1-((2-氨基乙酰氨基)甲氧基)-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)环丙烷-1-甲酰胺8f
将化合物8e(4mg，4.84μmol)溶于0.2mL二氯甲烷中，加入0.1mL二乙胺，室温搅拌2小时。反应液减压浓缩，加入2mL甲苯减压浓缩，重复两次，加入3mL正己烷打浆，倾倒出上层正己烷，重复三次，减压浓缩得到粗品标题产物8f(2.9mg)，产品不经纯化直接用于下一步反应。
MS m/z(ESI):606.0[M+1]。
第五步
1-(((S)-7-苄基-20-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)-3,6,9,12,15-五氧代-2,5,8,11,14-五氮杂二十烷基)氧基)-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)环丙烷-1-甲酰胺8
将粗品8f(2.9mg，4.84μmol)溶于0.5mL N,N-二甲基甲酰胺，氩气置换三次，冰水浴降温至0-5℃，加入(S)-2(-2-(-2-(6-(2,5-二氧代-1H-吡咯-1-基)已酰氨基)乙酰氨基)乙酰氨基)-3-苯基丙酸8g(2.7mg，5.80μmol，采用专利申请“EP2907824”公 开的方法制备而得)的0.3mL N,N-二甲基甲酰胺溶液，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(2.7mg，9.67μmol)，冰浴搅拌反应30分钟，撤去冰浴，升至室温搅拌15分钟。反应液进行高效液相色谱法纯化(分离条件：色谱柱：XBridge Prep C18 OBD 5um 19*250mm；流动相:A-水(10mmol NH 4OAc)：B-乙腈，梯度洗脱，流速：18mL/min)，收集其相应组分，减压浓缩得到标题产物8(2mg，产率：39.0％)。
MS m/z(ESI):1060.0[M+1]。
1H NMR(400MHz,DMSO-d 6):δ9.01(d,1H),8.77(t,1H),8.21(t,1H),8.08-7.92(m,2H),7.73(d,1H),7.28(s,1H),7.24-7.07(m,4H),6.98(s,1H),6.50(s,1H),5.61(q,1H),5.40(s,2H),5.32(t,1H),5.12(q,2H),4.62(t,1H),4.52(t,1H),4.40-4.32(m,1H),3.73-3.47(m,8H),3.16-3.04(m,2H),2.89(dd,1H),2.69-2.55(m,2H),2.37-2.23(m,4H),2.12-1.93(m,4H),1.90-1.74(m,2H),1.52-1.38(m,4H),1.33-1.11(m,5H),0.91-0.81(m,4H)。
实施例1-9
N-((2R,10S)-10-苄基-2-环丙基-1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基)-1,6,9,12,15-五氧代-3-氧杂-5,8,11,14-四氮杂十六-16-基)-6-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)己酰胺9-A
N-((2S,10S)-10-苄基-2-环丙基-1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基)-1,6,9,12,15-五氧代-3-氧杂-5,8,11,14-四氮杂十六-16-基)-6-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)己酰胺9-B
Figure PCTCN2021082854-appb-000055
Figure PCTCN2021082854-appb-000056
第一步
2-环丙基-2-羟基乙酸苄酯9a
将化合物2a(1.3g，11.2mmol；采用专利申请“WO2013/106717”公开的方法制备而得)溶于50mL乙腈中，依次加入碳酸钾(6.18g，44.8mmol)，溴化苄(1.33mL，11.2mmol)和四丁基碘化铵(413mg，1.1mmol)。将反应液室温搅拌48小时，通过 硅藻土过滤，滤饼用乙酸乙酯(10ml)淋洗，合并滤液减压浓缩，用硅胶柱色谱法以展开剂体系C纯化所得残余物，得到标题产物9a(2g，产率：86.9％)。
第二步
10-环丙基-1-(9H-芴-9-基)-3,6-二氧代-2,9-二氧杂-4,7-二氮杂十一-11-酸苄酯9b
将化合物9a(120.9mg,0.586mmol)和8b(180mg，0.489mmol)加入反应瓶，加入4mL四氢呋喃，氩气置换三次，冰水浴降温至0-5℃，加入叔丁醇钾(109mg，0.98mmol)，撤去冰浴，升至室温搅拌40分钟，加入10mL冰水，用乙酸乙酯(20mL×2)和氯仿(10mL×5)萃取，合并有机相并浓缩。所得残余物溶于4mL二氧六环中，加入2mL水，加入碳酸氢钠(49.2mg，0.586mmol)和氯甲酸-9-芴甲酯(126mg，0.49mmol)，室温搅拌2小时。加入20mL水，用乙酸乙酯(10mL×3)萃取，有机相用饱和氯化钠溶液(20mL)洗涤，无水硫酸钠干燥，过滤，滤液减压浓缩。用硅胶柱色谱法以展开剂体系C纯化所得残余物，得到标题产物9b(48mg，产率：19％)。
MS m/z(ESI):515.0[M+1]。
第三步
10-环丙基-1-(9H-芴-9-基)-3,6-二氧代-2,9-二氧杂-4,7-二氮杂十一-11-酸9c
将化合物9b(20mg，0.038mmol)溶于4.5mL四氢呋喃和乙酸乙酯(V:V＝2:1)混合溶剂中，加入钯碳(12mg，含量10％，干型)，氢气置换三次，室温搅拌反应1小时。反应液用硅藻土过滤，滤饼用乙酸乙酯淋洗，滤液浓缩，得到粗品标题产物9c(13mg)，产品不经纯化直接进行下一步反应。
MS m/z(ESI):424.9[M+1]。
第四步
(9H-芴-9-基)甲基(2-(((1-环丙基-2-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基)-2-氧代乙氧基)甲基)氨基)-2-氧代乙基)氨基甲酸酯9d
将化合物1b(10mg，18.8μmol)加入反应瓶，加入1mL N,N-二甲基甲酰胺，氩气置换三次，冰水浴降温至0-5℃，滴加一滴三乙胺，加入粗品9c(13mg，30.6μmol)，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(16.9mg，61.2μmol)，冰浴搅拌反应40分钟。加入10mL水，用乙酸乙酯(10mL×3)萃取，合并有机相。有机相用饱和氯化钠溶液(10mL×2)洗涤，有机相用无水硫酸钠干燥，过滤，滤液减压浓缩。用薄层层析以展开剂体系B纯化所得残余物，得到标题产物9d(19mg，产率：73.6％)。
MS m/z(ESI):842.1[M+1]。
第五步
2-((2-氨基乙酰氨基)甲氧基)-2-环丙基-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)乙酰胺9e
将化合物9d(19mg，22.6μmol)溶于2mL二氯甲烷中，加入1mL二乙胺，室温搅拌2小时。反应液减压浓缩，加入1mL甲苯并减压浓缩，重复两次。往残余物中加入3mL正己烷打浆，静置后倾倒出上层清液，保留固体。将固体残余物减压浓缩，油泵拉干得到粗品标题产物9e(17mg)，产品不经纯化直接用于下一步反应。
MS m/z(ESI):638.0[M+18]。
第六步
N-((2R,10S)-10-苄基-2-环丙基-1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基)-1,6,9,12,15-五氧代-3-氧杂-5,8,11,14-四氮杂十六-16-基)-6-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)己酰胺9-A
N-((2S,10S)-10-苄基-2-环丙基-1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基)-1,6,9,12,15-五氧代-3-氧杂-5,8,11,14-四氮杂十六-16-基)-6-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)己酰胺9-B
将粗品9e(13.9mg，22.4μmol)溶于0.6mL N,N-二甲基甲酰胺，氩气置换三次，冰水浴降温至0-5℃，加入8g(21.2mg，44.8μmol)的0.3mL N,N-二甲基甲酰胺溶液，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(18.5mg，67.3μmol)，冰浴搅拌反应10分钟，撤去冰浴，升至室温搅拌1小时，反应生成化合物9。反应液进行高效液相色谱法纯化(分离条件：色谱柱：XBridge Prep C18 OBD 5um 19*250mm；流动相:A-水(10mmol NH 4OAc)：B-乙腈，梯度洗脱，流速：18mL/min)，收集其相应组分，减压浓缩，得到标题产物(9-A：2.4mg，9-B：1.7mg)。
MS m/z(ESI):1074.4[M+1]。
单一构型化合物9-A(较短保留时间)：
UPLC分析:保留时间1.14分钟，纯度：85％(色谱柱：ACQUITY UPLC BEHC18 1.7um 2.1*50mm，流动相：A-水(5mmol NH 4OAc),B-乙腈)。
1H NMR(400MHz,DMSO-d 6):δ8.60(t,1H),8.51-8.49(d,1H),8.32-8.24(m,1H),8.13-8.02(m,2H),8.02-7.96(m,1H),7.82-7.75(m,1H),7.31(s,1H),7.26-7.15(m,4H),6.99(s,1H),6.55-6.48(m,1H),5.65-5.54(m,1H),5.41(s,2H),5.35-5.15(m,3H),4.74-4.62(m,1H),4.54-4.40(m,2H),3.76-3.64(m，4H),3.62-3.48(m,2H),3.20-3.07(m,2H),3.04-2.94(m,1H),2.80-2.62(m,1H),2.45-2.30(m,3H),2.25-2.15(m,2H),2.15-2.04(m,2H),1.93-1.78(m,2H),1.52-1.39(m,3H),1.34-1.12(m,5H),0.87(t,3H),0.64-0.38(m,4H)。
单一构型化合物9-B(较长保留时间)：
UPLC分析:保留时间1.16分钟，纯度：89％(色谱柱：ACQUITY UPLC BEHC18 1.7um 2.1*50mm，流动相：A-水(5mmol NH 4OAc),B-乙腈)。
1H NMR(400MHz,DMSO-d 6):δ8.68-8.60(m,1H),8.58-8.50(m,1H), 8.32-8.24(m,1H),8.13-8.02(m,2H),8.02-7.94(m,1H),7.82-7.75(m,1H),7.31(s,1H),7.26-7.13(m,3H),6.99(s,1H),6.55-6.48(m,1H),5.60-5.50(m,1H),5.41(s,2H),5.35-5.15(m,2H),4.78-4.68(m,1H),4.60-4.40(m,2H),3.76-3.58(m,4H),3.58-3.48(m,1H),3.20-3.10(m,2H),3.08-2.97(m,2H),2.80-2.72(m,2H),2.45-2.30(m,3H),2.25-2.13(m,2H),2.13-2.04(m,2H),2.03-1.94(m,2H),1.91-1.78(m,2H),1.52-1.39(m,3H),1.34-1.12(m,4H),0.91-0.79(m,3H),0.53-0.34(m,4H)。
实施例1-10
N-((2S,10S)-10-苄基-2-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基羰基)-1,1,1-三氟-6,9,12,15-四氧代-3-氧杂-5,8,11,14-四氮杂十六-16-基)-6-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)己酰胺10-A
N-((2R,10S)-10-苄基-2-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基羰基)-1,1,1-三氟-6,9,12,15-四氧代-3-氧杂-5,8,11,14-四氮杂十六-16-基)-6-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)己酰胺10-B
Figure PCTCN2021082854-appb-000057
Figure PCTCN2021082854-appb-000058
第一步
3,3,3-三氟-2-羟基丙酸苄酯10a
将化合物3a(1.80g，12.5mmol)溶于100mL乙腈中，依次加入碳酸钾(5.17g， 37.5mmol)，溴化苄(4.48mL，37.5mmol)和四丁基碘化铵(231mg，0.63mmol)。将反应液加热至60℃搅拌5小时。将反应液冷却至室温，过滤，滤液减压浓缩，用硅胶柱色谱法以展开剂体系C纯化所得残余物，得到标题产物10a(980mg，产率：33.5％)。
1H NMR(400MHz,CDCl 3):δ7.43-7.36(m,5H),5.34(s,2H),4.53(s,1H),3.44(s,1H)。
第二步
1-(9H-芴-9-基)-3,6-二氧代-10-(三氟甲基)-2,9-二氧杂-4,7-二氮杂十一-11-酸苄酯10b
将化合物8b(63mg,0.17mmol)和10a(80mg，0.34mmol)加入反应瓶，加入3mL四氢呋喃，氩气置换三次，冰水浴降温至0-5℃，加入叔丁醇钾(38mg，0.34mmol)，撤去冰浴，升至室温搅拌20分钟，加入10mL冰水，用乙酸乙酯(20mL×2)和氯仿(10mL×5)萃取，合并有机相并浓缩，所得残余物溶于2mL二氧六环中，加入0.4mL水，加入碳酸氢钠(19mg，0.23mmol)和氯甲酸-9-芴甲酯(49mg，0.19mmol)，室温搅拌1小时。加入20mL水，用乙酸乙酯(10mL×3)萃取，有机相用饱和氯化钠溶液(20mL)洗涤，无水硫酸钠干燥，过滤，滤液减压浓缩，用硅胶柱色谱法以展开剂体系C纯化所得残余物，得到标题产物10b(51mg，产率：55.3％)。
MS m/z(ESI):559.9[M+18]。
第三步
1-(9H-芴-9-基)-3,6-二氧代-10-(三氟甲基)-2,9-二氧杂-4,7-二氮杂十一-11-酸10c
将化合物10b(15mg，0.28mmol)溶于3mL四氢呋喃和乙酸乙酯(V:V＝2:1)混合溶剂中，加入钯碳(15mg，含量10％)，氢气置换三次，室温搅拌反应1小时。反应液用硅藻土过滤，滤饼用四氢呋喃淋洗，滤液浓缩，得到粗品标题产物10c(13mg)。
MS m/z(ESI):452.9[M+1]。
第四步
(9H-芴-9-基)甲基(2-((((3-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基)-1,1,1-三氟-3-氧代丙-2-基)氧基)甲基)氨基)-2-氧代乙基)氨基甲酸酯10d
将化合物1b(10mg，18.8μmol)加入反应瓶，加入1mL N,N-二甲基甲酰胺，氩气置换三次，冰水浴降温至0-5℃，滴加一滴三乙胺，加入10c(13mg，28.7μmol)的0.5mL N,N-二甲基甲酰胺溶液，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(11mg，39.7μmol)，冰浴搅拌反应30分钟。加入10mL水，用乙酸乙酯(10mL×3)萃取，合并有机相，有机相用饱和氯化钠溶液(10mL×2)洗涤，有机相用无水硫酸钠干燥，过滤，滤液减压浓缩，用薄层层析以展开剂体系B纯化所得残余物，得到标题产物10d(16mg，产率97.8％)。
MS m/z(ESI):870.0[M+1]。
第五步
2-((2-氨基乙酰氨基)甲氧基)-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)-3,3,3-三氟丙酰胺10e
将化合物10d(16mg，18.4μmol)溶于0.6mL二氯甲烷中，加入0.3mL二乙胺，室温搅拌2小时。反应液减压浓缩，加入2mL甲苯并减压浓缩，重复两次。往残余物中加入3mL正己烷打浆，静置后倾倒出上层清液，保留固体；重复三次。将固体残余物减压浓缩，油泵拉干得到粗品标题产物10e(12mg)，产品不经纯化直接用于下一步反应。
MS m/z(ESI):647.9[M+1]。
第六步
N-((2S,10S)-10-苄基-2-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基羰基)-1,1,1-三氟-6,9,12,15-四氧代-3-氧杂-5,8,11,14-四氮杂十六-16-基)-6-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)己酰胺10-A
N-((2R,10S)-10-苄基-2-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基羰基)-1,1,1-三氟-6,9,12,15-四氧代-3-氧杂-5,8,11,14-四氮杂十六-16-基)-6-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)己酰胺10-B
将粗品10e(12mg，18.5μmol)溶于1.0mL N,N-二甲基甲酰胺，氩气置换三次，冰水浴降温至0-5℃，加入8g(14mg，29.6μmol)的0.3mL N,N-二甲基甲酰胺溶液，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(15mg，54.2μmol)，冰浴搅拌反应30分钟，撤去冰浴，升至室温搅拌1小时，反应生成化合物10。反应液进行高效液相色谱法纯化(分离条件：色谱柱：XBridge Prep C18 OBD 5um19*250mm；流动相:A-水(10mmol NH 4OAc)B-乙腈，梯度洗脱，流速：18mL/min)，收集其相应组分，减压浓缩，得到标题产物(2.7mg，2.6mg)。
MS m/z(ESI):1102.0[M+1]。
单一构型化合物(较短保留时间)：
UPLC分析:保留时间1.18分钟，纯度：91％(色谱柱：ACQUITY UPLC BEHC18 1.7um 2.1*50mm，流动相：A-水(5mmol NH 4OAc),B-乙腈)。
1H NMR(400MHz,DMSO-d 6):δ8.97(d,1H),8.85-8.76(m,1H),8.37-8.27(m,1H),8.12-8.02(m,1H),8.02-7.95(m,1H),7.80(d,1H),7.31(s,1H),7.26-7.10(m,4H),6.99(s,1H),6.66(br,1H),6.52(s,1H),5.65-5.54(m,1H),5.41(s,1H),5.37-5.25(m,3H),5.23-5.13(m,1H),4.81-4.68(m,2H),4.51-4.41(m,1H),3.78-3.45(m,6H),3.21-3.13(m,1H),3.02-2.93(m,1H),2.77-2.63(m,2H),2.45-2.29(m,3H),2.24-2.05(m,3H),2.04-1.93(m,5H),1.90-1.75(m,2H),1.52-1.38(m,4H),0.90-0.78(m,5H)。
单一构型化合物(较长保留时间)：
UPLC分析:保留时间1.23分钟，纯度：90％(色谱柱：ACQUITY UPLC BEHC181.7um 2.1*50mm，流动相：A-水(5mmol NH 4OAc),B-乙腈)。
1H NMR(400MHz,DMSO-d 6):δ9.05(d,1H),8.97-8.88(m,1H),8.35-8.27(m,1H),8.11-8.03(m,1H),8.02-7.95(m,1H),7.80(d,1H),7.34(s,1H),7.29-7.13(m,4H),6.99(s,1H),6.66(br,1H),6.54(s,1H),5.64-5.55(m,1H),5.43(s,1H),5.36-5.20(m,3H),4.92-4.85(m,1H),4.82-4.72(m,2H),4.52-4.42(m,1H),3.77-3.48(m,6H),3.21-3.14(m,1H),3.03-2.95(m,1H),2.79-2.65(m,2H),2.47-2.28(m,3H),2.25-2.05(m,3H),2.05-1.94(m,5H),1.91-1.76(m,2H),1.52-1.37(m,4H),0.92-0.77(m,5H)。
实施例1-11
1-(((S)-7-苄基-20-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)-3,6,9,12,15-五氧代-2,5,8,11,14-五氮杂二十烷基)氧基)-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)环丁烷-1-甲酰胺11
Figure PCTCN2021082854-appb-000059
Figure PCTCN2021082854-appb-000060
第一步
1-((2-((((9H-芴-9-基)甲氧基)羰基)氨基)乙酰氨基)甲氧基)环丁烷-1-羧酸苄酯11b
将1-羟基环丁烷-羧酸苄酯11a(167mg，0.81mmol，采用文献“Journal of Medicinal Chemistry,2013,vol.56,#13,p.5541-5552”公开的方法制备而得)和8b(150mg，0.41mmol)加入反应瓶，加入5mL四氢呋喃，氩气置换三次，冰水浴降温至0-5℃，加入叔丁醇钾(92mg，0.82mmol)，撤去冰浴，升至室温搅拌10分钟，加入20mL冰水，用乙酸乙酯(5mL×2)和氯仿(5mL×5)萃取，合并有机相并浓缩，所得残余物溶于3mL二氧六环中，加入0.6mL水，加入碳酸氢钠(41mg，0.48mmol)和氯甲酸-9-芴甲酯(105mg，0.41mmol)，室温搅拌1小时。加入20mL水，用乙酸乙酯(8mL×3)萃取，有机相用饱和氯化钠溶液(20mL)洗涤，无水硫酸钠干燥，过滤，滤液减压浓缩，用硅胶柱色谱法以展开剂体系C纯化所得残余物，得到标题产物11b(37mg，产率：17.6％)。
MS m/z(ESI):514.6[M+1]。
第二步
1-((2-((((9H-芴-9-基)甲氧基)羰基)氨基)乙酰氨基)甲氧基)环丁烷-1-羧酸11c
将化合物11b(37mg，71.9μmol)溶于3mL四氢呋喃和乙酸乙酯(V:V＝2:1)混 合溶剂中，加入钯碳(15mg，含量10％)，氢气置换三次，室温搅拌反应2小时。反应液用硅藻土过滤，滤饼用四氢呋喃淋洗，滤液浓缩，得到标题产物11c(35mg，产率：82％)，直接进行下一步。
第三步
(9H-芴-9-基)甲基(2-(((1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基羰基)环丁氧基)甲基)氨基)-2-氧代乙基)氨基甲酸酯11d
将化合物1b(10mg，0.018mmol)加入反应瓶，加入1mL N,N-二甲基甲酰胺，氩气置换三次，冰水浴降温至0-5℃，滴加一滴三乙胺，加入化合物11c(13mg，0.031mmol)的0.5mL N,N-二甲基甲酰胺溶液，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(25mg，0.091mmol)，冰浴搅拌反应40分钟。加入8mL水，用乙酸乙酯(5mL×3)萃取，有机相用饱和氯化钠溶液(8mL)洗涤，无水硫酸钠干燥，过滤，滤液减压浓缩，用薄层层析以展开剂体系A纯化所得残余物，得到标题产物11d(19mg，产率73.9％)。
MS m/z(ESI):842.3[M+1]。
第四步
1-((2-氨基乙酰氨基)甲氧基)-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)环丁烷-1-甲酰胺11e
将化合物11d(19mg，22.6μmol)溶于2mL二氯甲烷中，加入1mL二乙胺，室温搅拌1.5小时。反应液减压浓缩，加入1mL甲苯减压浓缩，重复两次，加入4mL正己烷打浆，倾倒出上层正己烷，重复三次，减压浓缩得到粗品标题产物11e(15mg)，产品不经纯化直接用于下一步反应。
第五步
1-(((S)-7-苄基-20-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)-3,6,9,12,15-五氧代-2,5,8,11,14-五氮杂二十烷基)氧基)-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)环丁烷-1-甲酰胺11
将粗品11e(2mg，3.22μmol)溶于0.5mL N,N-二甲基甲酰胺，氩气置换三次，冰水浴降温至0-5℃，加入8g(1.5mg，3.17μmol)的0.3mL N,N-二甲基甲酰胺溶液，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(2.7mg，9.67μmol)，室温搅拌30分钟。反应液用油泵旋干，除掉DMF，残余物用DCM溶解后直接用薄层层析法纯化2次(展开剂极性：DCM/MeOH＝10/1)，得到标题产物11(1mg，产率：28.8％)。
MS m/z(ESI):1073.6[M+1]。
1H NMR(400MHz,CDCl 3):δ8.70-8.60(m,1H),8.28-8.19(m,1H),8.13-7.91(m, 3H),7.79-7.71(d,1H),7.29(s,1H),7.25-7.09(m,4H),6.98(s,1H),6.71-6.62(m,1H),6.55-6.47(m,1H),5.64-5.54(m,2H),5.40(s,1H),5.35-5.27(t,2H),5.17-5.10(m,2H),4.60-4.51(m,1H),4.51-4.35(m,2H),3.93-3.78(m,3H),3.71-3.59(m,3H),3.01-2.88(m,3H),2.70-2.64(m,2H),2.44-2.30(m,3H),2.28-2.14(m,3H),2.11-1.92(m,6H),1.90-1.76(m,3H),1.51-1.39(m,4H),0.92-0.75(m,6H)。
实施例1-12
(S)-3-环丙基-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)-2-羟基丙酰胺12-A
(R)-3-环丙基-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)-2-羟基丙酰胺12-B
Figure PCTCN2021082854-appb-000061
第一步
3-环丙基-2-羟基丙酸12b
将化合物12a(0.5g，3.87mmol，供应商Adamas)溶于35mL水和乙酸(V:V＝4:1)的混合溶剂中，冰水浴降温至0-5℃，滴加亚硝酸钠(0.53g，7.74mmol)的2M水溶液，升至室温搅拌反应3小时。向反应液中加入固体氯化钠，使水相饱和，用乙酸乙酯(8mL×8)萃取，无水硫酸钠干燥，过滤，浓缩，得到标题产物12b(0.45g，产率：89.3％)。
第二步
(S)-3-环丙基-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)-2-羟基丙酰胺12-A
(R)-3-环丙基-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)-2-羟基丙酰胺12-B
向化合物1b(45mg，0.085mmol)中加入1.5mL乙醇和1.5mL N,N-二甲基甲酰胺，氩气置换三次，滴加0.1mL N-甲基吗啉，搅拌至反应液变澄清。向反应液中依次加入化合物12b(90mg，0.691mmol)，1-羟基苯并三唑(34mg，0.251mmol)和1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐(49mg，0.256mmol)，加毕，室温搅拌反应3小时。反应液减压浓缩，所得到的粗品化合物12用高效液相色谱法纯化(分离条件：色谱柱：Sharpsil-T C18 5um 21.2*250mm；流动相：A-水(10mmol NH 4OAc)，B-乙腈，梯度洗脱，流速：18mL/min)，得到标题产物(7mg，15mg)。
MS m/z(ESI):547.9[M+1]。
单一构型化合物(较短保留时间)：
UPLC分析：保留时间1.345分钟，纯度：72％(色谱柱：ZORBAX Ecliphase Plus C18 1.8um 2.1*50mm，流动相：A-水(5mmol NH 4OAc),B-乙腈)。
1H NMR(400MHz,DMSO-d 6):δ8.42(d,1H),7.78(d,1H),7.30(s,1H),6.51(s,1H),5.60-5.50(m,2H),5.42(s,1H),5.19(q,2H),4.02-4.00(m,1H),3.21-3.11(m,2H),2.39(s,3H),2.21-2.07(m,2H),2.05-1.95(m,1H),1.92-1.68(m,4H),1.53-1.41(m,1H),0.87(t,3H),0.48-0.34(m,2H),0.14-0.01(m,2H)。
单一构型化合物(较长保留时间)：
UPLC分析：保留时间1.399分钟，纯度：88％(色谱柱：ZORBAX Ecliphase Plus C18 1.8um 2.1*50mm，流动相：A-水(5mmol NH 4OAc),B-乙腈)。
1H NMR(400MHz,DMSO-d 6):δ8.36(d,1H),7.77(d,1H),7.31(s,1H),6.51(s,1H),5.58-5.51(m,1H),5.48(d,1H),5.42(s,1H),5.20(q,2H),4.09-4.02(m,1H),3.22-3.11(m,2H),2.39(s,3H),2.27-2.06(m,2H),2.05-1.95(m,1H),1.93-1.81(m,2H),1.65-1.43(m,2H),1.32-1.21(m,1H),0.87(t,3H),0.48-0.33(m,2H),0.14-0.01(m,2H)。
实施例1-13(参照例)
N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)-2-羟乙酰胺
Figure PCTCN2021082854-appb-000062
标题化合物13参照专利“EP2907824A1中说明书第147页的实施例76”公开的方法制备而得。
实施例1-14
N-((2R,10S)-10-苄基-2-(环丙基甲基)-1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基)-1,6,9,12,15-五氧代-3-氧杂-5,8,11,14-四氮杂十六-16-基)-6-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)己酰胺14-A
N-((2S,10S)-10-苄基-2-(环丙基甲基)-1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基)-1,6,9,12,15-五氧代-3-氧杂-5,8,11,14-四氮杂十六-16-基)-6-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)己酰胺14-B
Figure PCTCN2021082854-appb-000063
Figure PCTCN2021082854-appb-000064
第一步
3-环丙基-2-羟基丙酸苄酯14a
将化合物12b(200mg，1.54mmol)溶于20mL乙腈中，依次加入碳酸钾(1.06g，7.68mmol)，溴化苄(0.16mL，1.34mmol)和四丁基碘化铵(28mg，0.07mmol)。将反应液室温搅拌48小时，通过硅藻土过滤，滤饼用乙酸乙酯(10ml)淋洗，合并滤液减压浓缩，用硅胶柱色谱法以展开剂体系C纯化所得残余物，得到标题产物14a(140mg，产率：41.3％)。
第二步
10-(环丙基甲基)-1-(9H-芴-9-基)-3,6-二氧代-2,9-二氧杂-4,7-二氮杂十一-11-酸苄酯14b
将化合物14a(94mg,0.427mmol)和8b(130mg，0.353mmol)加入反应瓶，加入10mL四氢呋喃，氩气置换三次，冰水浴降温至0-5℃，加入叔丁醇钾(79mg，0.704mmol)，撤去冰浴，升至室温搅拌10分钟，加入20mL冰水，用乙酸乙酯(10mL×4)萃取，有机相用饱和氯化钠溶液(20mL)洗涤，无水硫酸钠干燥，过滤，滤液减压浓缩。用硅胶柱色谱法以展开剂体系C纯化所得残余物，得到标题产物14b(50mg，产率：26.8％)。
MS m/z(ESI):529.2[M+1]。
第三步
10-(环丙基甲基)-1-(9H-芴-9-基)-3,6-二氧代-2,9-二氧杂-4,7-二氮杂十一-11-酸14c
将化合物14b(27mg，0.051mmol)溶于3mL乙酸乙酯，加入钯碳(7mg，含量10％，干型)，氢气置换三次，室温搅拌反应1小时。反应液用硅藻土过滤，滤饼用乙酸乙酯淋洗，滤液浓缩，得到粗品标题产物14c(23mg)，产品不经纯化直接进行下一步反应。
MS m/z(ESI):439.1[M+1]。
第四步
(9H-芴-9-基)甲基(2-((((3-环丙基-1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二 氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基)-1-氧代丙-2-基)氧基)甲基)氨基)-2-氧代乙基)氨基甲酸酯14d
将化合物1b(22mg，42.38μmol)加入反应瓶，加入3mL N,N-二甲基甲酰胺，氩气置换三次，冰水浴降温至0-5℃，滴加三乙胺(4.3mg，42.49μmol)，加入粗品14c(23mg，51.1μmol)，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(17.6mg，63.6μmol)，冰浴搅拌反应40分钟。加入15mL水，用乙酸乙酯(8mL×3)萃取，合并有机相。有机相用饱和氯化钠溶液(15mL)洗涤，有机相用无水硫酸钠干燥，过滤，滤液减压浓缩。用薄层层析以展开剂体系B纯化所得残余物，得到标题产物14d(29mg，产率：79.9％)。
MS m/z(ESI):856.1[M+1]。
第五步
2-((2-氨基乙酰氨基)甲氧基)-3-环丙基-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)丙酰胺14e
将化合物14d(29mg，33.9μmol)溶于0.8mL二氯甲烷中，加入0.4mL二乙胺，室温搅拌1.5小时。反应液减压浓缩，加入1mL甲苯并减压浓缩，重复两次。往残余物中加入3mL正己烷打浆，静置后倾倒出上层清液，重复三次。将残余物减压浓缩，油泵拉干得到粗品标题产物14e(22mg)，产品不经纯化直接用于下一步反应。
MS m/z(ESI):634.1[M+1]。
第六步
N-((2R,10S)-10-苄基-2-(环丙基甲基)-1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基)-1,6,9,12,15-五氧代-3-氧杂-5,8,11,14-四氮杂十六-16-基)-6-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)己酰胺14-A
N-((2S,10S)-10-苄基-2-(环丙基甲基)-1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基)-1,6,9,12,15-五氧代-3-氧杂-5,8,11,14-四氮杂十六-16-基)-6-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)己酰胺14-B
将粗品14e(22mg，33.9μmol)溶于2.5mL N,N-二甲基甲酰胺，氩气置换三次，冰水浴降温至0-5℃，依次加入8g(24mg，50.8μmol)，和4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(14mg，50.6μmol)，撤去冰浴，升至室温搅拌1小时，反应生成化合物14。反应液进行高效液相色谱法纯化(分离条件：色谱柱：XBridge Prep C18 OBD 5um 19*250mm；流动相：A-水(10mmol NH 4OAc)：B-乙腈，梯度洗脱，流速：18mL/min)，得到标题产物(2mg，2mg)。
MS m/z(ESI):1088.4[M+1]。
单一构型化合物(较短保留时间)：
UPLC分析:保留时间1.18分钟，纯度：88％(色谱柱：ACQUITY UPLC BEHC18 1.7um 2.1*50mm，流动相：A-水(5mmol NH 4OAc)，B-乙腈)。
单一构型化合物(较长保留时间)：
UPLC分析:保留时间1.23分钟，纯度：96％(色谱柱：ACQUITY UPLC BEHC18 1.7um 2.1*50mm，流动相：A-水(5mmol NH 4OAc)，B-乙腈)。
实施例1-15
1-((S)-9-苄基-22-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)-5,8,11,14,17-五氧代-2-氧杂-4,7,10,13,16-五氮杂二十二烷基)-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3,4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)环丙烷-1-甲酰胺15
Figure PCTCN2021082854-appb-000065
第一步
1-(10-(9H-芴-9-基)-5,8-二氧代-2,9-二氧杂-4,7-二氮杂癸基)环丙烷-1-羧酸苄酯15b
将化合物8b(500mg，1.35mmol)加入反应瓶，加入6mL四氢呋喃，将1-羟基甲基环丙烷-1-甲酸苄酯15a(233mg，1.13mmol；采用专利申请“EP2862856A1中说明书第262页的实施例22-2”公开的方法制备而得)加入瓶中，氩气置换三次，冰水浴降温至0-5℃，加入氢化钠(54mg，1.35mmol)，撤去冰浴，升至室温搅拌40分钟；降至零度加入20mL冰水，用乙酸乙酯(5mL×2)和氯仿(5mL×5)萃取，合并有机相，用饱和氯化钠溶液(20mL)洗涤，无水硫酸钠干燥，过滤，滤液减压浓缩，用硅胶柱色谱法以展开剂体系B纯化所得残余物，得到标题产物15b(15mg，产率：2.5％)。
MS m/z(ESI):515.2[M+1]。
第二步
1-(10-(9H-芴-9-基)-5,8-二氧代-2,9-二氧杂-4,7-二氮杂癸基)环丙烷-1-羧酸15c
将化合物15b(15mg，0.029mmol)溶于2mL乙酸乙酯中，加入钯碳(3mg，含量10％,干型)，氢气置换三次，室温搅拌反应4.5小时。反应液用硅藻土过滤，滤饼用乙酸乙酯淋洗，滤液浓缩，得到标题产物15c(11mg，产率：89％)。
MS m/z(ESI):425.2[M+1]。
第三步
(9H-芴-9-基)甲基(2-((((1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基羰基)环丙基)甲氧基)甲基)氨基)2-氧代乙基)氨基甲酸酯15d
将化合物1b(10mg，0.021mmol)加入反应瓶，加入1mL N,N-二甲基甲酰胺，氩气置换三次，冰水浴降温至0-5℃，滴加一滴三乙胺，加入化合物15c(11mg，0.026mmol)，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(10.7mg，0.039mmol)，加完后室温搅拌反应60分钟。加入10mL水，用乙酸乙酯(5mL×3)萃取，有机相用饱和氯化钠溶液(10mL)洗涤，无水硫酸钠干燥，过滤，滤液减压浓缩，用薄层层析以展开剂体系B纯化所得残余物，得到标题产物15d(19mg，产率87.0％)。
MS m/z(ESI):842.2[M+1]。
第四步
1-(((2-氨基乙酰氨基)甲氧基)甲基)-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)环丙烷-1-甲酰胺15e
将化合物15d(19mg，22.56μmol)溶于2mL二氯甲烷中，加入1mL二乙胺，室温搅拌1.5小时。反应液在0℃下减压浓缩，加入1mL甲苯减压浓缩，重复两 次；加入3mL正己烷打浆，倾倒出上层正己烷，重复三次；减压浓缩得到粗品标题产物15e(13.9mg)，产品不经纯化直接用于下一步反应。
MS m/z(ESI):620.1[M+1]。
第五步
1-((S)-9-苄基-22-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)-5,8,11,14,17-五氧代-2-氧杂-4,7,10,13,16-五氮杂二十二烷基)-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)环丙烷-1-甲酰胺15
将粗品15e(13.9mg，22.4μmol)溶于1mL N,N-二甲基甲酰胺，氩气置换三次，冰水浴降温至0-5℃，加入8g(15.8mg，33.4μmol)，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(9.3mg，33.6μmol)，升至室温搅拌反应60分钟。反应液进行高效液相色谱法纯化(分离条件：色谱柱：XBridge Prep C18 OBD 5um19*250mm；流动相:A-水(10mmol NH 4OAc)：B-乙腈，梯度洗脱，流速：18mL/min)，收集其相应组分，减压浓缩得到标题产物15(2.5mg，产率：10.3％)。
MS m/z(ESI):1074.2[M+1]。
1H NMR(400MHz,DMSO-d 6):δ8.51-8.37(m,1H),8.22(t,1H),8.14-8.02(m,2H),8.011-7.94(m,1H),7.82-7.73(m,1H),7.29(s,1H),7.26-7.10(m,3H),6.98(s,1H),6.53-6.47(m,1H),5.62-5.50(m,1H),5.45-5.36(m,1H),5.35-5.23(m,2H),5.13-5.02(m,2H),4.61-4.50(m,2H),4.42-4.28(m,2H),3.76-3.61(m,3H),3.60-3.45(m,3H),3.27-3.23(m,1H),3.20-2.81(m,7H),2.75-2.61(m,3H),241-2.28(m,3H),2.23-2.13(m,2H),2.11-2.01(m,1H),2.03-1.94(m,1H),1.90(s,1H),1.87-1.74(m,2H),1.53-1.36(m,3H),1.29-1.08(m,4H),0.90-0.68(m,4H)。
实施例1-16
1-((S)-9-苄基-22-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)-5,8,11,14,17-五氧代-2-氧杂-4,7,10,13,16-五氮杂二十二烷基)-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)环丁烷-1-甲酰胺16
Figure PCTCN2021082854-appb-000066
Figure PCTCN2021082854-appb-000067
第一步
1-(羟基甲基)环丁烷-1-羧酸16b
将1-(羟甲基)环丁烷羧酸乙酯16a(250mg，1.58mmol，供应商Alfa)溶于甲醇(2mL)和水(1mL)，加入氢氧化钠(126mg，3.15mmol)，升温至40℃，搅拌反应3小时。冷却至常温，减压浓缩除去有机溶剂，用乙醚(10mL)反萃，收集水相。水相用6N盐酸水溶液调至pH 3-4，减压浓缩得到固体。加入3mL甲苯，减压浓缩旋干，重复三次。油泵拉干，得到粗品标题产物16b(206mg)，产品不经纯化直接用于下一步反应。
MS m/z(ESI，NEG):129.2[M-1]。
第二步
1-(羟基甲基)环丁烷-1-羧酸苄酯16c
将粗品16b(206mg，1.58mmol)溶于乙腈(15mL)，加入无水碳酸钾(1.09g，7.90mmol)和四丁基碘化铵(29mg，78.51μmol)，加入溴化苄(216mg，1.26mmol)，室温搅拌过夜。过滤，滤液减压浓缩，用硅胶柱色谱法以展开剂体系C纯化所得残余物，得到标题产物16c(112mg，产率：32.1％)。
MS m/z(ESI):221.1[M+1]。
第三步
1-(10-(9H-芴-9-基)-5,8-二氧代-2,9-二氧杂-4,7-二氮杂癸基)环丁烷-1-羧酸苄酯16d
将化合物16c(77mg，0.35mmol)和8b(100mg，0.27mmol)加入反应瓶，加入3mL四氢呋喃，氩气置换三次，冰水浴降温至0-5℃，加入叔丁醇钾(61mg，0.54mmol)，冰浴搅拌10分钟。加入20mL冰水，用乙酸乙酯(5mL)和氯仿(5mL×5)萃取，合并有机相并浓缩。所得残余物溶于3mL 1,4-二氧六环中，加入0.5mL水，加入碳酸氢钠(27mg，0.32mmol)和氯甲酸-9-芴甲酯(71mg，0.27mmol)，室温搅拌1小时。加入20mL水，用乙酸乙酯(10mL×3)萃取，有机相用饱和氯化钠溶液(20mL)洗涤，无水硫酸钠干燥，过滤，滤液减压浓缩，用硅胶柱色谱法以展开剂体系C纯化所得残余物，得到标题产物16d(24mg，产率：16.7％)。
MS m/z(ESI):551.3[M+23]。
第四步
1-(10-(9H-芴-9-基)-5,8-二氧代-2,9-二氧杂-4,7-二氮杂癸基)环丁烷-1-羧酸16e
将化合物16d(12mg，22.7μmol)溶于1.5mL四氢呋喃和乙酸乙酯(V:V＝2:1)混合溶剂中，加入钯碳(5mg，含量10％)，氢气置换三次，室温搅拌反应2小时。反应液用硅藻土过滤，滤饼用乙酸乙酯淋洗，滤液减压浓缩，得到粗品标题产物16e(10mg)，产品不经纯化直接用于下一步反应。
第五步
(9H-芴-9-基)甲基(2-((((1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基羰基)环丁基)甲氧基)甲基)氨基)-2-氧代乙基)氨基甲酸酯16f
将化合物1b(7.5mg，0.014mmol)加入反应瓶，加入1mL N,N-二甲基甲酰胺，氩气置换三次，冰水浴降温至0-5℃，滴加一滴三乙胺，加入粗品16e(10mg)的0.5mL N,N-二甲基甲酰胺溶液，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(6mg，0.026mmol)，冰浴搅拌反应30分钟。加入10mL水，用乙酸乙酯(10mL×3)萃取，有机相用饱和氯化钠溶液(10mL)洗涤，无水硫酸钠干燥，过滤，滤液减压浓缩，用薄层色谱法以展开剂体系B纯化所得残余物，得到标题产物16f(10.6mg，产率87.8％)。
MS m/z(ESI):856.2[M+1]。
第六步
1-(((2-氨基乙酰氨基)甲氧基)甲基)-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)环丁烷-1-甲酰胺16g
将化合物16f(10.6mg，12.4μmol)溶于0.6mL二氯甲烷中，加入0.3mL二乙胺，室温搅拌2小时。反应液减压浓缩，加入2mL甲苯减压浓缩，重复两次；加入3mL正己烷打浆，倾倒出上层正己烷，重复三次。减压浓缩得到粗品标题产物16g(8mg)，产品不经纯化直接用于下一步反应。
MS m/z(ESI):634.1[M+1]。
第七步
1-((S)-9-苄基-22-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)-5,8,11,14,17-五氧代-2-氧杂-4,7,10,13,16-五氮杂二十二烷基)-N-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)环丁烷-1-甲酰胺16
将粗品16g(8mg)溶于1mL N,N-二甲基甲酰胺，加入8g(8.8mg，18.6μmol)，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(5.2mg，18.8μmol)，室温搅拌反应30分钟。反应液进行高效液相色谱法纯化(分离条件：色谱柱：XBridge Prep C18 OBD 5um 19*250mm；流动相:A-水(10mmol NH 4OAc)：B-乙腈，梯度洗脱，流速：18mL/min)，得到标题产物16(1.0mg，产率：7.2％)。
MS m/z(ESI):1088.0[M+1]。
实施例1-17
(1r,4r)-N-((S)-7-苄基-1-(1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基羰基)环丙氧基)-3,6,9,12,15-五氧代-17,20,23,26,29,32,35,38,41-九氧杂-2,5,8,11,14-五氮杂四十三-43-基)-4-((2,5-二氧代-2,5-二氢-1H-吡咯-1-基)甲基)环己烷-1-甲酰胺17
Figure PCTCN2021082854-appb-000068
Figure PCTCN2021082854-appb-000069
第一步
1-苯基-2,5,8,11,14,17,20,23,26,29-十氧杂三十一-31-酸叔丁酯17b
将1-苯基-2,5,8,11,14,17,20,23,26-九氧杂二十八-28-醇17a(0.34g，0.67mmol，供应商毕得)溶于10mL二氯甲烷中，依次加入氧化银(0.24g，1.01mmol)、溴乙酸叔丁酯(0.16g，0.81mmol)和碘化钾(0.07g，0.40mmol)，室温搅拌反应3小时。过滤，滤液减压浓缩，用硅胶柱色谱法以展开剂体系B纯化所得残余物，得到标题产物17b(0.42g，产率：100％)。
MS m/z(ESI):636.3[M+18]。
第二步
29-羟基-3,6,9,12,15,18,21,24,27-九氧杂二十九-1-酸叔丁酯17c
将化合物17b(417mg，0.67mmol)溶于15mL四氢呋喃，加入钯碳(110mg，含量10％，干型)，氢气置换三次，升至60℃搅拌反应3小时。反应液用硅藻土过滤，滤饼用四氢呋喃淋洗，滤液浓缩，得到粗品标题产物17c(357mg)，产品不经纯化直接进行下一步反应。
MS m/z(ESI):546.2[M+18]。
第三步
29-叠氮基-3,6,9,12,15,18,21,24,27-九氧杂二十九-1-酸叔丁酯17d
将化合物17c(357mg,0.675mmol)溶于10mL甲苯，加入叠氮磷酸二苯酯(279mg，1.014mmol)和1,8-二氮杂二环十一碳-7-烯(206mg，1.353mmol)，氩气置换三次，室温搅拌反应2小时，然后升至105℃反应19小时。反应液冷却至室温，浓缩，加入20mL水，用乙酸乙酯(10mL×4)萃取，有机相用饱和氯化钠溶液(20mL)洗涤，无水硫酸钠干燥，过滤，滤液减压浓缩。用硅胶柱色谱法以展开剂体系B纯化所得残余物，得到粗品标题产物17d(412mg)。
MS m/z(ESI):571.3[M+18]。
第四步
29-氨基-3,6,9,12,15,18,21,24,27-九氧杂二十九-1-酸叔丁酯17e
将化合物17d(230mg，0.415mmol)溶于8mL四氢呋喃，加入钯碳(58mg，含量10％，干型)，氢气置换三次，室温搅拌反应2小时。反应液用硅藻土过滤，滤饼用四氢呋喃淋洗，滤液浓缩，得到粗品标题产物17e(220mg)，产品不经纯化直接进行下一步反应。
MS m/z(ESI):528.2[M+1]。
第五步
1-((1r,4r)-4-((2,5-二氧代-2,5-二氢-1H-吡咯-1-基)甲基)环己基)-1-氧代-5,8,11,14,17,20,23,26,29-九氧杂-2-氮杂三十一-31-酸叔丁酯17f
将(1r,4r)-4-((2,5-二氧代-2,5-二氢-1H-吡咯-1-基)甲基)环己烷-1-羧酸(98.5mg，0.415mmol)溶于10mL二氯甲烷，加入2-(7-氧化苯并三氮唑)-N,N,N',N'-四甲基脲六氟磷酸盐(190mg，0.500mmol)和N,N-二异丙基乙胺(162mg，1.253mmol)，氩气置换三次，加入粗品17e(220mg，0.417mmol)，室温搅拌反应1小时。加入15mL水，用二氯甲烷(8mL×3)萃取，合并有机相。有机相用饱和氯化钠溶液(15mL)洗涤，有机相用无水硫酸钠干燥，过滤，滤液减压浓缩。用硅胶柱色谱法以展开剂体系B纯化所得残余物，得到标题产物17f(122mg，产率：39.2％)。
MS m/z(ESI):747.2[M+1]。
第六步
1-((1r,4r)-4-((2,5-二氧代-2,5-二氢-1H-吡咯-1-基)甲基)环己基)-1-氧代 -5,8,11,14,17,20,23,26,29-九氧杂-2-氮杂三十一-31-酸17g
将化合物17f(122mg，0.163mmol)溶于0.8mL二氯甲烷中，加入0.4mL三氟乙酸，室温搅拌反应1小时。加入15mL二氯甲烷稀释，减压浓缩；加入10mL正己烷，减压浓缩，重复两次；再加入10mL甲苯减压浓缩；用10mL正己烷：乙醚＝5:1的混合溶剂打浆三次，至pH接近7，浓缩，油泵抽干，得到标题产物17g(98mg，产率：86.8％)。
MS m/z(ESI):691.2[M+1]。
第七步
2,4-二甲氧基苄基1-((2-((((9H-芴-9-基)甲氧基)羰基)氨基)乙酰氨基)甲氧基)环丙基-1-羧酸酯17h
将化合物8d(164mg，0.40mmol)溶于二氯甲烷(5mL)，依次加入2,4-二甲氧基苄醇(81mg，0.48mmol)，1-乙基-(3-二甲基氨基丙基)碳酰二亚胺盐酸盐(115mg，0.60mmol)和4-二甲氨基吡啶(5mg，0.041mmol)，加毕，室温搅拌反应1小时。加入20mL水，震荡后分层，水相用二氯甲烷(8mL×3)萃取，合并有机相。有机相用饱和氯化钠溶液(20mL)洗涤，有机相用无水硫酸钠干燥，过滤，滤液减压浓缩。用硅胶柱色谱法以展开剂体系C纯化所得残余物，得到标题产物17h(124mg，产率：55.4％)。
MS m/z(ESI):583.1[M+23]。
第八步
2,4-二甲氧基苄基(S)-1-((11-苄基-1-(9H-芴-9-基)-3,6,9,12,15-五氧代-2-氧杂-4,7,10,13,16-五氮杂十七-17-基)氧基)环丙基-1-羧酸酯17j
将化合物17h(39mg，69.6μmol)溶于0.6mL二氯甲烷中，加入0.3mL二乙胺，室温搅拌1小时。反应液减压浓缩，加入2mL甲苯减压浓缩，重复两次；加入3mL正己烷打浆，倾倒出上层正己烷，重复三次，减压浓缩。将所得到的粗品溶于2mL N,N-二甲基甲酰胺，加入(((9H-芴-9-基)甲氧基)羰基)甘氨酰-L-苯丙氨酸17i(35mg，69.8μmol，采用专利申请“CN108853514A中说明书第13页的实施例7-12”公开的方法制备而得)，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(23mg，83.1μmol)，室温搅拌1小时。加入10mL水，用乙酸乙酯(10mL×3)萃取，合并有机相。有机相用饱和氯化钠溶液(10mL×2)洗涤，有机相用无水硫酸钠干燥，过滤，滤液减压浓缩。用薄层层析以展开剂体系B纯化所得残余物，得到标题产物17j(48mg，产率：83.9％)。
MS m/z(ESI):822.0[M+1]。
第九步
(S)-1-((11-苄基-1-(9H-芴-9-基)-3,6,9,12,15-五氧代-2-氧杂-4,7,10,13,16-五氮杂十七-17-基)氧基)环丙烷-1-羧酸17k
将化合物17j(48mg，58.4μmol)溶于1.4mL 3％(v/v)的二氯乙酸的二氯甲烷溶 液，冰水浴降温至0-5℃，加入三乙基硅烷(21mg，180.6μmol)，冰浴搅拌反应3小时。冰浴下减压浓缩除去一半有机溶剂，加入5mL乙醚，自然升至室温打浆，析出白色固体，过滤，收集滤饼，油泵抽干，得到标题产物17k(33mg，产率：84.1％)。
第十步
(9H-芴-9-基)甲基((S)-7-苄基-1-(1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基羰基)环丙氧基)-3,6,9,12-四氧代-2,5,8,11-四氮杂十三-13-基)氨基甲酸酯17l
将化合物1b(20mg，42.4μmol)加入反应瓶，加入1mL 10％(v/v)的甲醇的二氯甲烷溶液，氩气置换三次，冰水浴冷却至0～5℃，滴加一滴三乙胺，搅拌至化合物1b溶解。将化合物17k(33mg，49.1μmol)溶于1mL 10％(v/v)的甲醇的二氯甲烷溶液，然后滴加入上述反应液中，再加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(17.6mg，63.6μmol)。升至室温，搅拌反应1小时。加入10mL二氯甲烷和5mL水，搅拌5分钟，静置分层，收集有机相；水相用二氯甲烷(10mL×3)萃取，合并有机相。有机相用饱和氯化钠溶液(10mL×2)洗涤，有机相用无水硫酸钠干燥，过滤，滤液减压浓缩。用薄层层析以展开剂体系B纯化所得残余物，得到标题产物17l(37mg，产率：80.2％)。
MS m/z(ESI):1090.1[M+1]。
第十一步
(1r,4r)-N-((S)-7-苄基-1-(1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基羰基)环丙氧基)-3,6,9,12,15-五氧代-17,20,23,26,29,32,35,38,41-九氧杂-2,5,8,11,14-五氮杂四十三-43-基)-4-((2,5-二氧代-2,5-二氢-1H-吡咯-1-基)甲基)环己烷-1-甲酰胺17
将化合物17l(15.5mg，14.23μmol)溶于0.6mL二氯甲烷中，加入0.3mL二乙胺，室温搅拌1.5小时。反应液减压浓缩，加入2mL甲苯减压浓缩，重复两次；加入3mL正己烷打浆，倾倒出上层正己烷，重复三次。减压浓缩，然后用油泵抽干。将所得粗品溶于1mL N,N-二甲基甲酰胺，加入化合物17g(11mg，15.92μmol)，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(6.0mg，21.68μmol)，氩气置换三次，室温搅拌反应30分钟。反应液进行高效液相色谱法纯化(分离条件：色谱柱：XBridge Prep C18 OBD 5um 19*250mm；流动相:A-水(10mmol NH 4OAc)：B-乙腈，梯度洗脱，流速：18mL/min)，收集其相应组分，减压浓缩得到标题产物17(6mg，产率：27.4％)。
MS m/z(ESI):1556.4[M+18]。
1H NMR(400MHz,DMSO-d 6):δ8.98(d,1H),8.76(s,1H),8.20(br,1H),8.12-7.95(m,3H),7.93-7.76(m,2H),7.75-7.66(m,2H),7.24(s,1H),7.20-7.05(m,6H),6.97(s,1H),6.64(br,1H),6.55(d,1H),6.47(s,1H),5.61-5.52(m,2H),5.37(s, 1H),5.33-5.23(m,2H),5.18(s,1H),5.13(s,1H),5.05(s,1H),5.00(s,1H),4.65-4.55(m,2H),4.53-4.45(m,1H),4.38-4.28(m,2H),3.84(s,2H),3.67(d,3H),3.60-3.40(m,33H),3.18(d,1H),3.15-3.08(m,3H),2.28(s,3H),2.00-1.92(m,3H),1.85(s,2H),1.82-1.73(m,2H),1.68-1.52(m,4H),1.29-1.15(m,3H),0.86-0.76(m,5H)。
实施例1-18
(1r,4r)-N-((2R,10S)-10-苄基-2-环丙基-1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基)-1,6,9,12,15,18-六氧代-3,20,23,26,29,32,35,38,41,44-十氧杂-5,8,11,14,17-五氮杂四十六-46-基)-4-((2,5-二氧代-2,5-二氢-1H-吡咯-1-基)甲基)环己烷-1-甲酰胺18
Figure PCTCN2021082854-appb-000070
第一步
(R)-2-环丙基-2-羟基乙酸苄酯18a
(S)-2-环丙基-2-羟基乙酸苄酯18b
将化合物2a(7.4g，63.7mmol)溶于200mL乙腈中，依次加入碳酸钾(35g，253.6mmol)，溴化苄(9.3g，54.4mmol)和四丁基碘化铵(500mg，1.36mmol)。将反应液室温搅拌16小时，通过硅藻土过滤，滤饼用乙酸乙酯(10ml)淋洗，合并滤液减压浓缩，用硅胶柱色谱法以展开剂体系C纯化所得残余物4.1g，进一步手性拆分纯化，得到标题产物18a(1.1g)和18b(1.2g)。
第二步
(R)-10-环丙基-1-(9H-芴-9-基)-3,6-二氧代-2,9-二氧杂-4,7-二氮杂十一-11-酸苄酯18c
将化合物8b(3.1g，8.41mmol)溶于四氢呋喃(55mL)中，加入化合物18a(2.0g，9.70mmol)，冰水浴冷却至0～5℃，加入叔丁醇钾(1.89g，16.84mmol)，冰水浴下搅拌10分钟。加入乙酸乙酯(30mL)和水(20mL)，静置分层，水相用氯仿(30mL×5)萃取，合并有机相。有机相减压浓缩，所得残余物溶于1,4-二氧六环(32mL)和水(8mL)，加入碳酸钠(1.78g，16.79mmol)和氯甲酸-9-芴基甲酯(2.18g，8.42mmol)，室温搅拌2小时。反应液中加入水(30mL)，用乙酸乙酯(50mL×3)萃取，合并有机相。有机相用饱和氯化钠溶液(30mL×2)洗涤，有机相用无水硫酸钠干燥，过滤，滤液减压浓缩。用柱层析以展开剂体系C纯化所得残余物，得到标题产物18c(1.3g，产率：30.0％)。
MS m/z(ESI):515.2[M+1]。
第三步
(R)-10-环丙基-1-(9H-芴-9-基)-3,6-二氧代-2,9-二氧杂-4,7-二氮杂十一-11-酸18d
将化合物18c(1.29g，2.51mmol)溶于乙酸乙酯(15mL)中，加入钯碳(260mg，含量10％，干型)，氢气置换三次，室温搅拌反应5小时。反应液用硅藻土过滤，滤饼用乙酸乙酯(20mL)和甲醇(20mL)淋洗，滤液浓缩，得到粗品标题产物18d(980mg)，产品不经纯化直接进行下一步反应。
MS m/z(ESI):425.1[M+1]。
第四步
2,4-二甲氧基苄基(R)-10-环丙基-1-(9H-芴-9-基)-3,6-二氧代-2,9-二氧杂-4,7-二氮杂十一-11-酯18e
将粗品18d(980mg，2.31mmol)溶于二氯甲烷(15mL)中，加入2,4-二甲氧基苄醇(777mg，4.62mmol)，1-乙基-(3-二甲基氨基丙基)碳酰二亚胺盐酸盐(664mg，3.46mmol)和4-二甲氨基吡啶(28mg，0.23mmol)，室温搅拌一小时。减压浓缩除去有机溶剂，加入20mL水，用乙酸乙酯(50mL×3)萃取，合并有机相。有机相用 饱和氯化钠溶液(30mL×2)洗涤，有机相用无水硫酸钠干燥，过滤，滤液减压浓缩。用柱层析以展开剂体系C纯化所得残余物，得到标题产物18e(810mg，产率：61.1％)。
MS m/z(ESI):575.0[M+1]。
第五步
2,4-二甲氧基苄基(R)-2-((2-氨基乙酰氨基)甲氧基)-2-环丙基乙酸酯18f
将化合物18e(33mg，57.4μmol)溶于0.6mL二氯甲烷中，加入0.3mL二乙胺，室温搅拌1小时。反应液减压浓缩，加入2mL甲苯减压浓缩，重复两次；加入3mL正己烷打浆，倾倒出上层正己烷，重复三次，减压浓缩得到粗品标题产物18f(21mg)，产品不经纯化直接用于下一步反应。
第六步
2,4-二甲氧基苄基(11S,19R)-11-苄基-19-环丙基-1-(9H-芴-9-基)-3,6,9,12,15-五氧代-2,18-二氧杂-4,7,10,13,16-五氮杂二十-20-酸酯18g
将粗品18f(21mg，57.4μmol)溶于3mL N,N-二甲基甲酰胺，加入化合物17i(29mg，57.8μmol)，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(19mg，68.7μmol)，室温搅拌1小时。加入10mL水，用乙酸乙酯(10mL×3)萃取，合并有机相。有机相用饱和氯化钠溶液(10mL×2)洗涤，有机相用无水硫酸钠干燥，过滤，滤液减压浓缩。用薄层层析以展开剂体系B纯化所得残余物，得到标题产物18g(37mg，产率：77.1％)。
MS m/z(ESI):853.0[M+18]。
第七步
(11S,19R)-11-苄基-19-环丙基-1-(9H-芴-9-基)-3,6,9,12,15-五氧代-2,18-二氧杂-4,7,10,13,16-五氮杂二十-20-酸18h
将化合物18g(37mg，44.3μmol)溶于1.4mL 3％(v/v)的二氯乙酸的二氯甲烷溶液，冰水浴降温至0-5℃，加入三乙基硅烷(15.4mg，132.4μmol)，冰浴搅拌反应3小时。冰浴下减压浓缩除去一半有机溶剂，加入5mL乙醚，自然升至室温打浆，析出白色固体，过滤，收集滤饼，油泵抽干，得到标题产物18h(24mg，产率：79.1％)。
MS m/z(ESI):708.2[M+23]。
第八步
(9H-芴-9-基)甲基((2R,10S)-10-苄基-2-环丙基-1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基)-1,6,9,12,15-五氧代-3-氧杂-5,8,11,14-四氮杂十六-16-基)氨基甲酸酯18i
将化合物1b(30mg，63.6μmol)加入反应瓶，加入1mL 10％(v/v)的甲醇的二氯甲烷溶液，氩气置换三次，冰水浴降温至0-5℃，滴加一滴三乙胺，搅拌至化合 物1b溶解。将化合物18h(65mg，94.8μmol)溶于1mL 10％(v/v)的甲醇的二氯甲烷溶液，然后滴加入上述反应液中，再加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(27mg，97.6μmol)。升至室温，搅拌反应1小时。加入10mL二氯甲烷和5mL水，搅拌5分钟，静置分层，收集有机相；水相用二氯甲烷(10mL×3)萃取，合并有机相。有机相用饱和氯化钠溶液(10mL×2)洗涤，有机相用无水硫酸钠干燥，过滤，滤液减压浓缩。用薄层层析以展开剂体系B纯化所得残余物，得到标题产物18i(25mg，产率：35.6％)。
MS m/z(ESI):1104.4[M+1]。
第九步
(S)-2-(2-(2-氨基乙酰氨基)乙酰氨基)-N-(2-((((R)-1-环丙基-2-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基)-2-氧代乙氧基)甲基)氨基)-2-氧代乙氧基)-3-苯基丙酰胺18j
将化合物18i(12mg，10.9μmol)溶于0.6mL二氯甲烷中，加入0.3mL二乙胺，室温搅拌1.5小时。反应液减压浓缩，加入2mL甲苯减压浓缩，重复两次，加入3mL正己烷打浆，倾倒出上层正己烷，重复三次，减压浓缩得到粗品标题产物18j(10mg)，产品不经纯化直接用于下一步反应。
MS m/z(ESI):881.0[M+1]。
第十步
(1r,4r)-N-((2R,10S)-10-苄基-2-环丙基-1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基)-1,6,9,12,15,18-六氧代-3,20,23,26,29,32,35,38,41,44-十氧杂-5,8,11,14,17-五氮杂四十六-46-基)-4-((2,5-二氧代-2,5-二氢-1H-吡咯-1-基)甲基)环己烷-1-甲酰胺18
将粗品18j(10mg)溶于1mL N,N-二甲基甲酰胺，加入化合物17g(8.5mg，12.3μmol)，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(4.6mg，16.6μmol)，室温搅拌30分钟。反应液过滤，进行高效液相色谱法纯化(分离条件：色谱柱：XBridge Prep C18 OBD 5um 19*250mm；流动相:A-水(10mmol NH 4OAc)：B-乙腈，梯度洗脱，流速：18mL/min)，收集其相应组分，减压浓缩，得到标题产物18(9.5mg，产率：56.2％)。
MS m/z(ESI):1570.2[M+18]。
1H NMR(400MHz,DMSO-d 6):δ8.77(d,1H),8.59-8.55(m,1H),8.42(d,1H),8.37-8.28(m,1H),8.25-8.06(m,2H),7.96-7.86(m,1H),7.86-7.70(m,2H),7.32-7.28(m,1H),7.25-7.14(m,3H),6.67(m,1H),5.96(s,1H),5.80-5.72(m,1H),5.62-5.52(m,2H),5.43-5.30(m,3H),5.28-5.17(m,2H),5.12-5.08(m,1H),4.72-4.35(m,8H),3.95-3.70(m,13H),3.35-3.22(m,14H),2.42-2.32(m,3H),2.05-1.98(m,4H),1.88-1.82(m,12H),1.47-1.39(m,3H),1.32-1.18(m,11H),0.90-0.80(m,4H), 0.52-0.37(m,3H),0.32-0.18(m,2H)。
实施例1-19
(1r,4r)-N-((2S,10S)-10-苄基-2-环丙基-1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基)-1,6,9,12,15,18-六氧代-3,20,23,26,29,32,35,38,41,44-十氧杂-5,8,11,14,17-五氮杂四十六-46-基)-4-((2,5-二氧代-2,5-二氢-1H-吡咯-1-基)甲基)环己烷-1-甲酰胺19
Figure PCTCN2021082854-appb-000071
第一步
(S)-10-环丙基-1-(9H-芴-9-基)-3,6-二氧代-2,9-二氧杂-4,7-二氮杂十一-11-酸苄酯19a
将化合物18b(252mg,1.22mmol)加入反应瓶，加入4mL二氯甲烷，氩气置换三次，冰水浴降温至0-5℃，加入叔丁醇锂(98mg,1.22mmol)，冰水浴下搅拌反应15分钟，变澄清，加入8b(300mg,814.3μmol)，冰水浴下搅拌2.5小时。加水(10mL)，分液，水相用二氯甲烷(8mL×2)萃取，合并有机相后用水(10mL×1)洗，饱和食盐水(10mL×2)洗，无水硫酸钠干燥，过滤浓缩得粗品。用硅胶柱色谱法以展开剂体系C纯化所得残余物，得到标题产物19a(282mg，产率：67.2％)。
第二步
(S)-10-环丙基-1-(9H-芴-9-基)-3,6-二氧代-2,9-二氧杂-4,7-二氮杂十一-11-酸19b
将化合物19a(280mg，0.554mmol)溶于8mL乙酸乙酯中，加入钯碳(84mg，含量10％，干型)，氢气置换三次，室温搅拌反应3小时。反应液用硅藻土过滤，滤饼用乙酸乙酯淋洗，滤液浓缩，得到粗品标题产物19b(230mg)，产品不经纯化直接进行下一步反应。
第三步
2,4-二甲氧基苄基(S)-10-环丙基-1-(9H-芴-9-基)-3,6-二氧代-2,9-二氧杂-4,7-二氮杂十一-11-酸酯19c
将粗品19b(230mg，541.8μmol)溶于7mL二氯甲烷中，依次加入2,4-二甲氧基苯甲醇(136.7mg,812.7μmol)，1-乙基-(3-二甲基氨基丙基)碳酰二亚胺盐酸盐(155mg,808.5μmol)和4-二甲氨基吡啶(6.6mg,53.5μmol)，室温搅拌16小时。反应液用10mL二氯甲烷稀释后，用水(10mL×1)洗，饱和食盐水(10mL×2)洗，无水硫酸钠干燥，过滤浓缩得粗品。用薄层层析以展开剂体系B纯化所得残余物，得到标题产物19c(159mg，产率：51.0％)
第四步
2,4-二甲氧基苄基(S)-2-((2-氨基乙酰氨基)甲氧基)-2-环丙基乙酸酯19d
将化合物19c(60mg，104.4μmol)溶于1mL二氯甲烷中，加入0.5mL二乙胺，室温搅拌1小时。反应液减压浓缩，加入2mL甲苯减压浓缩，重复两次；加入3mL正己烷打浆，倾倒出上层正己烷，重复三次，减压浓缩得到粗品标题产物19d(21mg)，产品不经纯化直接用于下一步反应。
第五步
2,4-二甲氧基苄基(11S,19S)-11-苄基-19-环丙基-1-(9H-芴-9-基)-3,6,9,12,15-五氧代-2,18-二氧杂-4,7,10,13,16-五氮杂二十-20-酸酯19e
将粗品19d(36mg，102.2μmol)溶于4mL N,N-二甲基甲酰胺，加入化合物17i(52mg，103.6μmol)，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(34.6mg，125.0μmol)，室温搅拌1小时。加入10mL水，用乙酸乙酯(10mL×3)萃取，合并有机相。有机相用饱和氯化钠溶液(10mL×2)洗涤，有机相用无水硫酸钠干燥，过滤，滤液减压浓缩。用薄层层析以展开剂体系B纯化所得残余物，得到标题产物19e(70mg，产率：80.2％)。
第六步
(11S,19S)-11-苄基-19-环丙基-1-(9H-芴-9-基)-3,6,9,12,15-五氧代-2,18-二氧杂-4,7,10,13,16-五氮杂二十-20-酸19f
将化合物19e(70mg，83.7μmol)溶于2.5mL 3％(v/v)的二氯乙酸的二氯甲烷溶液，冰水浴降温至0-5℃，加入三乙基硅烷(29mg，249.4μmol)，冰浴搅拌反应3小时。冰浴下减压浓缩除去一半有机溶剂，加入5mL乙醚，自然升至室温打浆，析出白色固体，过滤，收集滤饼，油泵抽干，得到标题产物19f(57mg，产率：99.2％)。
第七步
(9H-芴-9-基)甲基((2S,10S)-10-苄基-2-环丙基-1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基-1,6,9,12,15-五氧代-3-氧杂-5,8,11,14-四氮杂十六-16-基)氨基甲酸酯19g
将化合物1b(30mg，63.6μmol)加入反应瓶，加入1mL 10％(v/v)的甲醇的二氯甲烷溶液，氩气置换三次，冰水浴降温至0-5℃，滴加一滴三乙胺，搅拌至化合物1b溶解。将化合物19f(57mg，83.1μmol)溶于1mL 10％(v/v)的甲醇的二氯甲烷溶液，然后滴加入上述反应液中，再加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(26mg，93.9μmol)。升至室温，搅拌反应1小时。加入10mL二氯甲烷和5mL水，搅拌5分钟，静置分层，收集有机相；水相用二氯甲烷(10mL×3)萃取，合并有机相。有机相用饱和氯化钠溶液(10mL×2)洗涤，有机相用无水硫酸钠干燥，过滤，滤液减压浓缩。用薄层层析以展开剂体系B纯化所得残余物，得到标题产物19g(56mg，产率：79.8％)。
MS m/z(ESI):1103.1[M+1]。
第八步
(S)-2-(2-(2-氨基乙酰氨基)乙酰氨基)-N-(2-((((S)-1-环丙基-2-((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基)-2-氧代乙氧基)甲基)氨基)-2-氧代乙基)-3-苯基丙酰胺19h
将化合物19g(4.6mg，4.16μmol)溶于1.5mL二氯甲烷中，加入0.75mL二乙胺，室温搅拌1.6小时。反应液减压浓缩，加入2mL甲苯减压浓缩，重复两次，加入3mL正己烷打浆，倾倒出上层正己烷，重复三次，减压浓缩得到粗品标题产物19h(4.0mg)，产品不经纯化直接用于下一步反应。
第九步
(1r,4r)-N-((2S,10S)-10-苄基-2-环丙基-1-(((1S,9S)-9-乙基-5-氟-9-羟基-4-甲基-10,13-二氧代-2,3,9,10,13,15-六氢-1H,12H-苯并[de]吡喃并[3',4':6,7]吲哚嗪并[1,2-b]喹啉-1-基)氨基)-1,6,9,12,15,18-六氧代-3,20,23,26,29,32,35,38,41,44-十氧杂-5,8,11,14,17-五氮杂四十六-46-基)-4-((2,5-二氧代-2,5-二氢-1H-吡咯-1-基)甲基)环己烷-1-甲酰胺 19
将粗品19h(4.0mg)溶于1mL N,N-二甲基甲酰胺，加入化合物17g(2.9mg，4.2μmol)，加入4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基氯化吗啉盐(1.5mg，5.4μmol)，室温搅拌40分钟。反应液过滤，进行高效液相色谱法纯化(分离条件：色谱柱：XBridge Prep C18 OBD 5um 19*250mm；流动相:A-水(10mmol NH 4OAc)：B-乙腈，梯度洗脱，流速：18mL/min)，收集其相应组分，减压浓缩，得到标题产物19(2.1mg，产率：32.4％)。
1H NMR(400MHz,DMSO-d 6):δ8.71-8.62(m,1H),8.59-8.51(m,1H),8.34-8.26(m,1H),8.14-8.02(m,2H),7.95-7.86(m,1H),7.83-7.69(m,2H),7.35-7.31(m,1H),7.29-7.11(m,3H),7.01(s,1H),6.72-6.50(m,3H),5.59-5.50(m,2H),5.42(s,2H),5.38-5.18(m,3H),4.79-4.69(m,2H),4.61-4.42(m,3H),3.91(s,2H),3.79-3.65(m,4H),3.63-3.44(m,13H),3.41-3.30(m,2H),3.26-3.09(m,5H),3.08-2.84(m,4H),2.81-2.64(m,3H),2.42-2.28(m,3H),2.24-2.12(m,2H),2.05-1.93(m,4H),1.89-1.77(m,2H),1.72-1.56(m,3H),1.53-1.38(m,3H),1.34-1.10(m,11H),0.94-0.78(m,5H),0.52-0.35(m,3H)。
实施例1-20(参照例)
Figure PCTCN2021082854-appb-000072
标题化合物20参照专利“CN104755494A中说明书第163页的实施例58”提供的方法合成。
以下抗体按抗体常规方法进行制备，例如可进行载体构建后，转染真核细胞如HEK293细胞(Life Technologies Cat.No.11625019)，表达纯化后获得。
以下为Trastuzumab的序列：
轻链
Figure PCTCN2021082854-appb-000073
重链
Figure PCTCN2021082854-appb-000074
以下为Pertuzumab的序列：
轻链
Figure PCTCN2021082854-appb-000075
重链
Figure PCTCN2021082854-appb-000076
以下为B7H3抗体1F9DS的序列：
轻链
Figure PCTCN2021082854-appb-000077
重链
Figure PCTCN2021082854-appb-000078
实施例1-21 ADC-1
Figure PCTCN2021082854-appb-000079
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；2.5ml，9.96mg/mL，0.168μmol)加入配置好的三(2-羧乙基)膦的水溶液(10mM，0.082mL，0.82μmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应；将反应液用水浴降温至25℃，稀释至5.0mg/ml，并取出2.0ml溶液往下反应。
将化合物10-较短保留时间化合物(2.1mg，2.02μmol)溶解于0.10mL DMSO中，加入到上述2.0mL溶液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-1通式的示例性产物ADC-1的PBS缓冲液(5.0mg/mL，1.1mL)，于4℃储存。
UV-HPLC计算平均值：n＝5.09。
实施例1-22 ADC-2
Figure PCTCN2021082854-appb-000080
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；2.5mL，9.96mg/mL，0.168μmol)加入配置好的三(2-羧乙基)膦的水溶液(10mM，0.082mL，0.82μmol)，置于水浴振荡器，于37℃下振荡反应3小时，停止反应；将反应液用水浴降温至25℃，稀释至5.0mg/ml，并取出2.0ml溶液往下反应。
将化合物10-较长保留时间化合物(2.1mg，2.02μmol)溶解于0.10mL DMSO中，加入到上述2.0mL溶液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-1通式的示例性产物ADC-2的PBS缓冲液(4.95mg/mL，1.1mL)，于4℃储存。
UV-HPLC计算平均值：n＝7.39。
实施例1-23 ADC-3
Figure PCTCN2021082854-appb-000081
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；2.5ml，9.96mg/mL，0.168μmol)加入配置好的三(2-羧乙基)膦的水溶液(10mM，0.082mL，0.82μmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应；将反应液用水浴降温至25℃，稀释至5.0mg/ml，并取出2.0ml溶液往下反应。
将化合物8(2.1mg，2.02μmol)溶解于0.10mL DMSO中，加入到上述2.0ml溶液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-3通式的示例性产物ADC-3的PBS缓冲液(5.24mg/mL，1.1mL)，于4℃储存。
UV-HPLC计算平均值：n＝7.36。
实施例1-24 ADC-4
Figure PCTCN2021082854-appb-000082
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；3.74mL，13.38mg/ml，0.338μmol)加入配置好的三(2-羧乙基)膦的水溶液(10mM，0.173mL，1.73μmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应；将反应液用水浴降温至25℃，稀释至6.7mg/mL，并取出1.3ml溶液往下反应。
将化合物9-较短保留时间化合物9-A(1.0mg，0.93μmol)溶解于0.10mL DMSO中，加入到上述1.3mL溶液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-4A通式的示例性产物ADC-4的PBS缓冲液(1.72mg/mL，2.36mL)，于4℃储存。
UV-HPLC计算平均值：n＝7.39。
实施例1-25 ADC-5
Figure PCTCN2021082854-appb-000083
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；3.0ml，6.70mg/mL，0.136μmol)加入配置好的三(2-羧乙基)膦的水溶液(10mM，0.067mL，0.67μmol)，置于水浴振荡器，于37℃下振荡反应3小时，停止反应；将反应液用水浴降温至25℃，并取出0.614ml溶液往下反应。
将化合物9-较短保留时间化合物9-A(0.5mg，0.42μmol)溶解于0.031mL DMSO中，加入到上述0.614ml溶液中，置于水浴振荡器，于25℃下振荡反应3 小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-4A通式的示例性产物ADC-5的PBS缓冲液(3.08mg/mL，0.82mL)，于4℃储存。
UV-HPLC计算平均值：n＝3.16。
实施例1-26 ADC-6
Figure PCTCN2021082854-appb-000084
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；3.74mL，13.38mg/mL，0.338μmol)加入配置好的三(2-羧乙基)膦的水溶液(10mM，0.173mL，1.73μmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应；将反应液用水浴降温至25℃，稀释至6.7mg/ml，并取出0.75ml溶液往下反应。
将化合物9-较长保留时间化合物9-B(0.68mg，0.63μmol)溶解于0.10mL DMSO中，加入到上述0.75mL溶液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-4B通式的示例性产物ADC-6的PBS缓冲液(1.78mg/mL，1.78mL)，于4℃储存。
UV-HPLC计算平均值：n＝3.94。
实施例1-27 ADC-7
Figure PCTCN2021082854-appb-000085
在37℃条件下，向抗体Pertuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；5.0mL，10mg/mL，0.338μmol)加入配置好的三(2-羧乙基)膦的水溶液(10mM，0.173mL，1.73μmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应；将反应液用水浴降温至25℃，稀释至5.0mg/ml，并取出1.0ml溶液往下反应。
将化合物8(0.65mg，0.6μmol)溶解于0.1mL DMSO中，加入到上述1.0mL溶液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-7通式的示例性产物ADC-7的PBS缓冲液(1.42mg/mL，2.15mL)，于4℃储存。
UV-HPLC计算平均值：n＝6.91。
实施例1-28 ADC-8
Figure PCTCN2021082854-appb-000086
在37℃条件下，向抗体Pertuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；5.0mL，10mg/mL，0.338μmol)加入配置好的三(2-羧乙基)膦的水溶液(10mM，0.173mL，1.73μmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应；将反应液用水浴降温至25℃，稀释至5.0mg/ml，并取出1.6ml溶液往下反应。
将化合物10-较短保留时间化合物(1.04mg，1.0μmol)溶解于0.1mL DMSO中，加入到上述1.6mL溶液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-8通式的示例性产物ADC-8的PBS缓冲液(2.14mg/mL，2.31mL)，于4℃储存。
UV-HPLC计算平均值：n＝6.58。
实施例1-29 ADC-9
Figure PCTCN2021082854-appb-000087
在37℃条件下，向抗体Pertuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；5.0mL，10mg/mL，0.338μmol)加入配置好的三(2-羧乙基)膦的水溶液(10mM，0.173mL，1.73μmol)，置于水浴振荡器，于37℃振荡反应 3小时，停止反应；将反应液用水浴降温至25℃，稀释至5.0mg/ml，并取出0.8ml溶液往下反应。
将化合物9-较短保留时间化合物9-A(0.55mg，0.5μmol)溶解于0.1mL DMSO中，加入到上述0.8ml溶液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-9A通式的示例性产物ADC-9的PBS缓冲液(2.27mg/mL，1.11mL)，于4℃储存。
UV-HPLC计算平均值：n＝3.16。
实施例1-30 ADC-10
Figure PCTCN2021082854-appb-000088
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，0.574mL，38.78nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，19.76μL，197.6nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物14-较短保留时间化合物(0.64mg，588nmol)溶解于40μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-10通式的示例性产物ADC-10的PBS缓冲液(5.48mg/mL，1.03mL)，于4℃储存。
UV-Vis计算平均值：n＝6.25。
实施例1-31 ADC-11
Figure PCTCN2021082854-appb-000089
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，0.646mL，43.64nmol)加入配置好的的三(2-羧 乙基)膦(TCEP)的水溶液(10mM，22.24μL，222.4nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物14-较长保留时间化合物(0.72mg，662nmol)溶解于40μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-10通式的示例性产物ADC-11的PBS缓冲液(2.13mg/mL，1.87mL)，于4℃储存。
UV-Vis计算平均值：n＝7.03。
实施例1-32 ADC-12
Figure PCTCN2021082854-appb-000090
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，0.726mL，49.05nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，25.0μL，250.0nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物15(0.81mg，754nmol)溶解于40μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-12通式的示例性产物ADC-12的PBS缓冲液(3.34mg/mL，1.45mL)，于4℃储存。
UV-Vis计算平均值：n＝6.93。
实施例1-33 ADC-13
Figure PCTCN2021082854-appb-000091
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，0.287mL，19.39nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，9.88μL，98.8nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物16(0.32mg，294nmol)溶解于20μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-13通式的示例性产物ADC-13的PBS缓冲液(2.37mg/mL，0.88mL)，于4℃储存。
UV-Vis计算平均值：n＝6.53。
实施例1-34 ADC-14
Figure PCTCN2021082854-appb-000092
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，0.592mL，40.0nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，20.38μL，203.8nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物17(0.92mg，598nmol)溶解于40μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-14通式的示例性产物ADC-14的PBS缓冲液(0.30mg/mL，12.0mL)，于4℃储存。
UV-Vis计算平均值：n＝7.61。
实施例1-35 ADC-15
Figure PCTCN2021082854-appb-000093
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，0.592mL，40.0nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，20.38μL，203.8nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物18(0.93mg，599nmol)溶解于40μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-15通式的示例性产物ADC-15的PBS缓冲液(0.32mg/mL，11.8mL)，于4℃储存。
UV-Vis计算平均值：n＝7.89。
实施例1-36 ADC-16
Figure PCTCN2021082854-appb-000094
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，0.53mL，35.8nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，18.25μL，182.5nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物19(0.83mg，534nmol)溶解于35μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-16通式的示例性产物ADC-16的PBS缓冲液(0.32mg/mL，12.0mL)，于4℃储存。
UV-Vis计算平均值：n＝7.43。
实施例1-37 ADC-17
Figure PCTCN2021082854-appb-000095
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，2.0mL，135.12nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，43.2μL，432nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物9-较短保留时间化合物9-A(2.22mg，2067nmol)溶解于175μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-4A通式的示例性产物ADC-17的PBS缓冲液(1.32mg/mL，12.0mL)，于4℃储存。
UV-Vis计算平均值：n＝5.42。
实施例1-38 ADC-18(参照例)
Figure PCTCN2021082854-appb-000096
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，1.5mL，101.3nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，51.7μL，517nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物20(2.0mg，1934nmol)溶解于100μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-18通式的示例性产物ADC-18的PBS缓冲液(0.79mg/mL，13.0mL)，于4℃储存。
UV-Vis计算平均值：n＝7.23。
实施例1-39 ADC-19
Figure PCTCN2021082854-appb-000097
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，1.36mL，91.9nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，46.9μL，469nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物9-较短保留时间化合物9-A(2.0mg，1862nmol)溶解于100μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-4A通式的示例性产物ADC-19的PBS缓冲液(0.73mg/mL，13.0mL)，于4℃储存。
UV-Vis计算平均值：n＝6.26。
实施例1-40 ADC-20
Figure PCTCN2021082854-appb-000098
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/ml，1.5mL，101.3nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，51.7μL，517nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物10-较长保留时间化合物(2.0mg，1815nmol)溶解于100μl DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-1通式的示例性产物ADC-20的PBS缓冲液(0.73mg/mL，13.0mL)，于4℃储存。
UV-Vis计算平均值：n＝7.43。
实施例1-41 ADC-21(参照例)
Figure PCTCN2021082854-appb-000099
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，1.86mL，125.4nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，63.9μL，639nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物20(2.07mg，2001nmol)溶解于150μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-18通式的示例性产物ADC-21的PBS缓冲液(2.91mg/mL，4.44mL)，于4℃储存。
UV-Vis计算平均值：n＝7.23。
实施例1-42 ADC-22
Figure PCTCN2021082854-appb-000100
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，1.88mL，127.2nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，64.9μL，649nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物9-较短保留时间化合物9-A(2.1mg，1955nmol)溶解于150μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-4A通式的示例性产物ADC-22的PBS 缓冲液(3.56mg/mL，3.98mL)，于4℃储存。
UV-Vis计算平均值：n＝6.79。
实施例1-43 ADC-23(参照例)
Figure PCTCN2021082854-appb-000101
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，345mL，23.31μmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，11.89mL，118.9μmol)，置于水浴振荡器，于37℃振荡反应3.5小时，停止反应。将反应液用水浴降温至25℃。
将化合物20(362mg，350μmol)溶解于7.12ml MeCN和3.56mL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液通过超滤膜包先后用含有2％(v/v)MeCN和1％(v/v)DMSO的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液)、琥珀酸缓冲水溶液(pH＝5.3的0.01M的琥珀酸缓冲水溶液)脱盐纯化，之后加入蔗糖至60mg/mL、吐温20至0.2mg/mL，装瓶冻干后得到FADC-18通式的示例性产物ADC-23的冻干粉样品，于4℃储存。
UV-Vis计算平均值：n＝7.05。
实施例1-44 ADC-24
Figure PCTCN2021082854-appb-000102
在37℃条件下，向抗体Trastuzumab的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，332mL，22.43μmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，11.44mL，114.4μmol)，置于水浴振荡器，于37℃振荡反应3.5小时，停止反应。将反应液用水浴降温至25℃。
将化合物9-较短保留时间化合物9-A(241mg，224μmol)溶解于13.76ml  MeCN和6.88mL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液通过超滤膜包先后用含有4％(v/v)MeCN和2％(v/v)DMSO的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液)、琥珀酸缓冲水溶液(pH＝5.3的0.01M的琥珀酸缓冲水溶液)脱盐纯化，之后加入蔗糖至60mg/mL、吐温20至0.2mg/mL，装瓶冻干后得到FADC-4A通式的示例性产物ADC-24的冻干粉样品，于4℃储存。
UV-Vis计算平均值：n＝7.07。
实施例1-45 ADC-25
Figure PCTCN2021082854-appb-000103
在37℃条件下，向抗体B7H3抗体1F9DS的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，2.14mL，144.60nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，73.7μL，740nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物9-较短保留时间化合物9-A(3.0mg，2793nmol)溶解于150μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-25通式的示例性产物ADC-25的PBS缓冲液(1.28mg/mL，13.0mL)，于4℃储存。
UV-Vis计算平均值：n＝6.87。
实施例1-46 ADC-26(参照例)
Figure PCTCN2021082854-appb-000104
在37℃条件下，向抗体B7H3抗体1F9DS的PBS缓冲水溶液(pH＝6.5的0.05 M的PBS缓冲水溶液；10.0mg/mL，0.89mL，60.14nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，30.1μL，300nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物20(1.0mg，967nmol)溶解于100μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-26通式的示例性产物ADC-26的PBS缓冲液(1.61mg/mL，4.0mL)，于4℃储存。
UV-Vis计算平均值：n＝6.15。
实施例1-47 ADC-27
Figure PCTCN2021082854-appb-000105
在37℃条件下，向抗体B7H3抗体1F9DS的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，0.89mL，60.14nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，30.1μL，300nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物9-较短保留时间化合物9-A(1.02mg，950nmol)溶解于100μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-25通式的示例性产物ADC-27的PBS缓冲液(1.94mg/mL，3.5mL)，于4℃储存。
UV-Vis计算平均值：n＝6.11。
实施例1-48 ADC-28(参照例)
Figure PCTCN2021082854-appb-000106
在37℃条件下，向抗体B7H3抗体1F9DS的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，2.36mL，159.47nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，81.3μL，810nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物20(3.0mg，2901nmol)溶解于150μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-26通式的示例性产物ADC-28的PBS缓冲液(1.29mg/mL，13.0mL)，于4℃储存。
UV-Vis计算平均值：n＝7.46。
实施例1-49 ADC-29
Figure PCTCN2021082854-appb-000107
在37℃条件下，向抗体B7H3抗体1F9DS的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，0.80mL，50.06nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，28.6μL，290nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物9-较短保留时间化合物9-A(1.29mg，1201nmol)溶解于100μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-25通式的示例性产物ADC-29的PBS缓冲液(2.63mg/mL，2.4mL)，于4℃储存。
UV-Vis计算平均值：n＝7.24。
实施例1-50 ADC-30(参照例)
Figure PCTCN2021082854-appb-000108
在37℃条件下，向抗体B7H3抗体1F9DS的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/ml，0.86mL，58.4nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，29.1μL，290nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物20(1.0mg，967nmol)溶解于100μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-26通式的示例性产物ADC-30的PBS缓冲液(1.61mg/mL，4.0mL)，于4℃储存。
UV-Vis计算平均值：n＝6.15。
实施例1-51 ADC-31
Figure PCTCN2021082854-appb-000109
在37℃条件下，向抗体B7H3抗体1F9DS的PBS缓冲水溶液(pH＝6.5的0.05M的PBS缓冲水溶液；10.0mg/mL，0.89mL，60.14nmol)加入配置好的的三(2-羧乙基)膦(TCEP)的水溶液(10mM，30.1μL，300nmol)，置于水浴振荡器，于37℃振荡反应3小时，停止反应。将反应液用水浴降温至25℃。
将化合物8(1.0mg，943nmol)溶解于100μL DMSO中，加入到上述反应液中，置于水浴振荡器，于25℃振荡反应3小时，停止反应。将反应液用Sephadex G25凝胶柱脱盐纯化(洗脱相：pH为6.5的0.05M的PBS缓冲水溶液，含0.001M的EDTA)，得到FADC-31通式的示例性产物ADC-31的PBS缓冲液(1.47mg/mL，4.5mL)，于4℃储存。
UV-Vis计算平均值：n＝6.33。
实施例1-52 ADC-32
Figure PCTCN2021082854-appb-000110
在25℃条件下，在含有20mM组氨酸-盐酸和2.5mM EDTA的缓冲液(pH5.6)，5.0克曲妥珠抗体原液(34.44μmol，20mM组氨酸-盐酸缓冲液稀释曲妥珠抗体至抗体终浓度15mg/mL)与34.64mg三(2-羧乙基)膦盐酸盐(还原剂TCEP，Sigma，120.84μmol)在恒温水浴中搅拌反应3小时，生成中间体I溶液。
将化合物9较短保留时间化合物9-A(406.2mg，378.17μmol)溶解于9.98mL DMSO中，生成化合物9-A的DMSO溶液。向上述中间体I溶液中预加23.42mL DMSO，再将上述化合物9-A的DMSO溶液加入到已预加DMSO的中间体I溶液中，于水浴25℃下搅拌反应1小时，加半胱氨酸淬灭反应,过滤。在25℃温度下，将反应液通过超滤膜包(30kd)先后用含有10％(v/v)DMSO的20mM组氨酸-盐酸和2.5mM EDTA缓冲水溶液(pH＝6.0)、10mM组氨酸-盐酸缓冲水溶液(pH＝5.5)进行10倍和16倍体积等体积超滤换液，去除小分子和残留溶剂，得到FADC-4A通式的示例性产物ADC-32。
HIC方法计算平均值：n＝6.0。
实施例1-53 ADC-33
Figure PCTCN2021082854-appb-000111
在37℃条件下，在含有20mM组氨酸-盐酸和2.5mM EDTA的缓冲液(pH6.0)，8.0克曲妥珠抗体原液(55.11μmol，20mM组氨酸缓冲液稀释曲妥珠抗体至抗体终浓度15mg/mL)与123.95mg三(2-羧乙基)膦盐酸盐(还原剂TCEP，Sigma，432.41μmol)在恒温水浴中搅拌反应5小时，生成中间体I溶液。
将化合物9较短保留时间化合物9-A(754.7mg，702.63μmol)溶解于15.99mL DMSO中，生成化合物9-A的DMSO溶液。向上述中间体I溶液中预加37.34mL DMSO，再将上述化合物9-A的DMSO溶液加入到已预加DMSO的中间体I溶液 中，于水浴37℃下搅拌反应1小时，停止反应，过滤。在25℃温度下，将反应液通过超滤膜包(30kd)先后用含有10％(v/v)DMSO的20mM组氨酸-盐酸和2.5mM EDTA缓冲水溶液(pH＝6.0)、10mM组氨酸-盐酸缓冲水溶液(pH＝6.0)进行8倍和16倍体积等体积超滤换液，去除小分子和残留溶剂，得到FADC-4A通式的示例性产物ADC-33。
HIC方法计算平均值：n＝7.15。
ADC原液药物载量分析
实验目的及原理
ADC是一种抗体交联物类药物，其治疗疾病的机理是依赖抗体的靶向性将毒素分子运送到细胞中，进而将细胞杀死。药物的载量对药效起着决定性的作用。使用紫外-可见分光光度法(UV-Vis)或疏水色谱法(HIC)对ADC原液的药物载量进行了测定。
一、紫外-可见分光光度法
将装有琥珀酸钠缓冲液的比色皿分别置于参比吸收池和样品测定吸收池中后，扣除溶剂空白后，再将装有供试品溶液的比色皿置于样品测定吸收池中，测定280nm和370nm处吸光度。
结果计算：采用紫外分光光度法(使用仪器：Thermo nanodrop2000紫外分光光度计)测定ADC原液载量，其原理是在某波长下ADC原液的总吸光值等于胞毒药物与单克隆抗体在该波长下吸光值的加和，即：
(1)A 280nm＝ε mab-280bC mab+ε Drug-280bC Drug
ε Drug-280：药物在280nm平均摩尔消光系数5100；
C Drug：药物的浓度；
ε mab-280：曲妥珠单抗原液或帕妥珠单抗原液在280nm平均摩尔消光系数214600；
C mab：曲妥珠单抗原液或帕妥珠单抗原液的浓度；
b：光程长度为1cm。
同理可以得到样品在370nm下的总吸光值方程：
(2)A 370nm＝ε mab-370bC mab+ε Drug-370bC Drug
ε Drug-370：药物在370nm平均摩尔消光系数19000；
C Drug：药物的浓度；
ε mab-370：曲妥珠单抗原液或帕妥珠单抗原液在370nm消光系数为0；
C mab：曲妥珠单抗原液的浓度；
b：光程长度为1cm。
由⑴和⑵两种方程结合单克隆抗体和药物在两个检测波长下的消光系数和 浓度数据可以计算出药物的载量。
药物载量n＝C Drug/C mab。
二、疏水色谱法
2.1在以下测量条件下进行HPLC分析：
HPLC系统：Agilent高效液相色谱仪HPLC系统
检测器：DAD检测器(测量波长：280nm)
色谱柱：TSKgel Butyl-NPR(4.6mm×100mm,2.5μm)
柱温：30℃
流速：0.5ml/min
样品室温度：4℃
流动相A：pH 7.00水溶液，含有1.5M硫酸铵((NH4)2SO4)和20mM磷酸氢二钠(Na2HPO4)。
流动相B：pH 7.00的混合溶液，包含75％的20mM磷酸氢二钠(Na2HPO4)和25％异丙醇。
梯度程序：0.0％B-0.0％B(0min-3.0min)，0.0％B-100.0％B(3.0min-30.0min)，100.0％B-
100.0％B(30.0min-33.0min)，0.0％B-0.0％B(33.1min-40.0min)，
注入样品量：50μg
2.2数据分析
基于目前数据，因为柱子的特征，基于盐浓度的差异，按照结合药物的数目增加的顺序洗脱抗体药物偶联物，所以通过测量各峰面积值来获得偶联药物数目的分布。峰按照洗脱顺序为D0(未结合药物接头的抗体)、D2、D4、D6和D8，载药量DAR(n)计算公式如下：
表1.疏水层析色谱载药量计算表
名称 连接药物数 加权峰面积百分比
D0 0 D0峰面积*连接药物数
D2 2 D2峰面积*连接药物数
D4 4 D4峰面积*连接药物数
D6 6 D6峰面积*连接药物数
D8 8 D8峰面积*连接药物数
载药量n＝Σ(加权峰面积)/100
生物学评价
测试例1-1：本披露化合物对肿瘤细胞体外增殖抑制测试
一、测试目的
本实验的目的是为了检测本披露药物化合物，对U87MG细胞(中科院细胞库，Catalog#TCHu138)和SK-BR-3肿瘤细胞(人乳腺癌细胞，ATCC，货号HTB-30)体外增殖的抑制活性。以不同浓度的化合物体外处理细胞，经6天培养后，采用CTG(CellTiter-
Figure PCTCN2021082854-appb-000112
Luminescent Cell Viability Assay，Promega，货号：G7573)试剂对细胞的增值进行检测，根据IC50值评价该化合物的体外活性。
二、实验方法
下面以对U87MG细胞体外增殖抑制测试方法为例，用于举例说明本披露中测试本披露化合物对肿瘤细胞进行体外增殖抑制活性测试的方法。本方法同样适用于，但不限于对其它肿瘤细胞进行体外增殖抑制活性测试。
1、细胞培养：U87MG和SK-BR-3细胞分别用10％FBS的EMEM培养基(GE，货号SH30024.01)和含10％FBS的McCoy's 5A培养基(Gibco，货号16600-108)培养。
2、细胞准备：取对数生长期的U87MG和SK-BR-3细胞，用PBS(磷酸盐缓冲液，上海源培生物科技股份有限公司)洗涤1次之后，加入2-3mL胰蛋白酶(0.25％Trypsin-EDTA(1x)，Gibico,Life Technologies公司)消化2-3分钟，待细胞消化完全后，加入10-15mL细胞培养液，将经过消化的细胞洗脱下来，1000rpm离心5分钟，弃上清，接着加入10-20mL细胞培养液将细胞重悬，制成单细胞悬液。
3、细胞铺板：将U87MG和SK-BR-3单细胞悬液混匀，用细胞培养液分别调整活细胞密度至2.75×10 3细胞/mL和8.25×10 3细胞/mL，将密度调整过后的细胞悬液混匀，以180μL/孔加入96孔细胞培养板。96孔板外周孔只加入200μL培养基。将培养板在培养箱培养24小时(37℃，5％CO 2)。
4、化合物准备：用DMSO(二甲基亚砜，上海泰坦科技股份有限公司)溶解化合物，配制成初始浓度为10mM的存储液。
小分子化合物的起始浓度为500nM，配药方法如下。
在96孔U型底配药板第一列中分别加入30μL不同待测样品，样品浓度为100μM；第2列至第11列每孔中加入20μL DMSO。取第一列样品10μL至第二列20μL DMSO中，混匀，取10μL至第三列中，以此类推至第10列。将配药板中的药每孔取5μL至95μL EMEM培养基中，混匀，待用。
ADC的起始浓度为10nM或500nM，配药方法如下。
在96孔板第一列中分别加入100μL不同待测样品，样品浓度为100nM或5uM；第2列至第11列每孔中加入100μL PBS。取第一列样品50μL至第二列100μLPBS中，混匀，取50μL至第三列中，以此类推3倍稀释至第10列。
5、加样操作：向培养板中加入20μL配置的不同浓度的待测样品，每个样品两复孔。将培养板在培养箱孵育6天(37℃，5％CO 2)。
6、显色操作：取出96孔细胞培养板，向每孔加入90μL CTG溶液，室温孵育10分钟。
7、读板操作：取出96孔细胞培养板，置于酶标仪(BMG labtech，PHERAstar FS)中，用酶标仪测定化学发光。
三、数据分析
用Microsoft Excel，Graphpad Prism 5对数据进行处理分析。实验结果参见下表2。
表2.本披露中的小分子片段对SK-BR-3细胞和U87细胞体外增殖抑制的IC 50值
Figure PCTCN2021082854-appb-000113
结论：本披露中的小分子片段对SK-BR-3细胞和U87细胞具有明显的增殖抑制活性，手性中心对化合物的抑制活性有一定影响。
测试例1-2：本披露抗体药物偶联物对HER2靶标的肿瘤细胞的体外增殖抑制测试
本实验的目的是为了检测本披露针对HER2靶标的抗体药物偶联物，对SK-BR-3(人乳腺癌细胞，ATCC，货号HTB-30)和MDA-MB-468(人乳腺癌细胞，ATCC，货号HTB-132)体外增殖的抑制活性。以不同浓度的化合物体外处理细胞，经6天培养后，采用CTG试剂对细胞的增值进行检测，根据IC 50值评价该化合物的体外活性。
按照测试例1的测试方法，测试细胞为SK-BR-3和MDA-MB-468，细胞培养液分别为含10％FBS的McCoy's 5A培养基(Gibco，货号16600-108)，含10％FBS的EMEM培养基(GE，货号SH30024.01)，和含10％FBS的L-15培养基(ThermoFisher，货号11415-114)。用细胞培养液将三株细胞分别调整活细胞密度至8.33×10 3个细胞/mL、8.33×10 3个细胞/mL和1.39×10 4个细胞/mL，将密度调整过后的细胞悬液混匀，以180μL/孔加入96孔细胞培养板。对相关化合物进行测试，得到结果见下表3。
表3.本披露抗体药物偶联物对HER2靶标的肿瘤细胞的体外增殖抑制的IC 50值
Figure PCTCN2021082854-appb-000114
结论：本披露针对HER2靶标的抗体药物偶联物对HER2阳性细胞SK-BR-3具有明显的增殖抑制活性；同时，它们对HER2阴性细胞MDA-MB-468增殖抑制活性弱；具有良好的选择性。
测试例1-3：Her2-ADC血浆稳定性实验
将ADC-19样品、ADC-18样品、ADC-20样品、人血浆、猴血浆(上海美迪西生物医药股份有限公司)、和1％BSA(Sigma)PBS溶液(上海生工)分别用0.22μm的过滤器过滤除菌。将ADC-19、ADC-18、ADC-20分别以终浓度200μg/mL加入上述无菌血浆或1％BSA PBS溶液中，置于37℃细胞培养箱中孵育，将孵育当天记为第0天，随后分别在第7天、14天和21天取出样品，进行游离毒素的检测。
取25μL样品至96孔板中；加入50μL内标工作液(100ng/mL喜树碱乙腈溶液)及150μL乙腈；涡旋混合5分钟，离心10分钟(4000rpm)，5μL进行LC/MS/MS(美国应用生物系统公司)分析。
结果显示：ADC-19在人和猴血浆，以及1％BSA PBS溶液中都相当稳定，游离毒素的释放率最高不超过2.1％，且在第14天趋于稳定，见图1A。
ADC-18在人和猴血浆中稳定性差，游离毒素的释放率最高分别为14.5％和8.10％。在1％BSA PBS溶液中比较稳定，见图1B。
ADC-20在人血浆、猴血浆和1％BSA PBS溶液中稳定性均比较差，游离毒素的释放率最高分别为21.7％、29.7％和21.7％。，且在1％BSAPBS溶液中一直处于降解状态，见图1C。
测试例1-4：JIMT-1荷瘤小鼠药效评价
一、试验目的
以nunu裸鼠为受试动物，评价Her2-ADC抗体T-DM1、ADC-21、ADC-24腹腔注射给药后，对人乳腺癌细胞曲妥珠单抗耐药株(赫赛汀)JIMT-1移植瘤裸小鼠的疗效。
二、受试药物及材料
1、受试药物
T-DM1(参考US20050169933制备)
ADC-21：3mg/kg
ADC-21：10mg/kg
ADC-24：3mg/kg
ADC-24：10mg/kg
空白对照(Blank)：PBS
2、配制方法：均用PBS稀释配制。
3、试验动物
nunu裸鼠，购自北京维通利华。
三、试验方法
在小鼠右肋部皮下接种JIMT-1细胞(南京科佰)(5×10 6/只，具有50％人工基底膜)，肿瘤生长8天，长至203.09±11.94mm 3后将动物随机分组(d1)，8只/组，共6组。
采用腹腔注射给药，共给药2次。每周测量2次瘤体积和体重，记录数据。
数据统计使用Excel 2003统计软件：平均值以avg计算；SD值以STDEV计算；SEM值以STDEV/SQRT计算；组间差异P值以TTEST计算。
肿瘤体积(V)计算公式为：V＝1/2×L 长×L 短 2
相对体积(RTV)＝V T/V 0
抑瘤率(％)＝(C RTV-T RTV)/C RTV(％)
其中V 0、V T分别为实验开始时及实验结束时的肿瘤体积。C RTV、T RTV分别为实验结束时的空白对照组(Vehicle，PBS)及实验组的相对肿瘤体积。
四、试验结果
实验结果如图2显示，腹腔注射给药2次，观察至第34天时结束实验。T-DM1(10mg/kg)对肿瘤无抑制作用；ADC-21，3mg/kg的抑瘤率46.22％(P＜0.01)；ADC-21，10mg/kg的抑瘤率56.77％(P＜0.001)；ADC-24，3mg/kg的抑瘤率62.77％(P＜0.001)；ADC-24，10mg/kg的抑瘤率76.32％(P＜0.001)。在同等剂量情况下，ADC-24的抑瘤效果明显好于ADC-21。
测试例1-5：SK-BR-3荷瘤小鼠药效评价
一、试验目的
以nunu裸鼠为受试动物，评价Her2-ADC抗体ADC-21、ADC-22腹腔注射给药后对人乳腺癌细胞SK-BR-3移植瘤裸小鼠的疗效。
二、受试药物及材料
1、受试药物
ADC-21：1mg/kg
ADC-21：6mg/kg
ADC-22：1mg/kg
ADC-22：6mg/kg
空白对照(Blank)：PBS。
2、配制方法：均用PBS稀释配制。
3、试验动物
nunu裸鼠，购自北京维通利华。
三、试验方法
在小鼠右肋部皮下接种SK-BR-3细胞(ATCC)(5×10 6/只，具有50％人工基底膜)，肿瘤生长20天，长至153.34±11.73mm3后将动物随机分组(d0)，8只/组，共5组。
采用腹腔注射给药1次。每周测量2次瘤体积和体重，记录数据。
数据统计使用Excel 2003统计软件：平均值以avg计算；SD值以STDEV计算；SEM值以STDEV/SQRT计算；组间差异P值以TTEST计算。
肿瘤体积(V)计算公式为：V＝1/2×L 长×L 短 2
相对体积(RTV)＝V T/V 0
抑瘤率(％)＝(C RTV-T RTV)/C RTV(％)
其中V 0、V T分别为实验开始时及实验结束时的肿瘤体积。C RTV、T RTV分别为实验结束时的空白对照及实验组的相对肿瘤体积。
四、试验结果
实验结果如图3显示，腹腔注射给药1次，观察至第28天时结束实验，ADC-21 1mg/kg的抑瘤率15.01％；ADC-21 6mg/kg的抑瘤率77.4％，且和空白对照相比有非常显著差异(P＜0.001)。ADC-22 1mg/kg的抑瘤率19.82％；ADC-22 6mg/kg的抑瘤率98.38％(P＜0.001)。同为6mg/kg剂量情况下，ADC-22的抑瘤效果也明显好于ADC-21。
测试例1-6：血浆稳定性
将样品ADC-25，以100μg/mL的终浓度，分别与人血浆、猴血浆、和1％BSA PBS溶液混合均匀后，过滤除菌后置于37℃水浴锅内孵育，将孵育当天记为第0天，随后分别在第7天、14天和21天取出样品，进行游离毒素的检测。
不同时间点的样品取出后放至室温，涡旋混匀；取25μL样品至96孔板中；加入50μL内标工作液(100ng/mL喜树碱乙腈溶液)及150μL乙腈；涡旋混合5分钟，离心10分钟(4000rpm)，取上清液5μL进行LC/MS/MS分析。
结果如图4显示，ADC-25在人和猴血浆，以及1％BSA PBS溶液中都相当稳定，游离毒素的释放率最高不超过2％，且在第14天趋于稳定。
测试例1-7：ADC对人脑星形胶质母细胞瘤U87MG裸小鼠移植瘤的疗效评价
一、试验目的
本实验以BALB/cA-nude裸小鼠为受试动物，评价本披露ADC化合物对人脑星形胶质母细胞瘤U87MG裸小鼠移植瘤的的疗效。
二、受试药物及材料
1、受试药物
ADC-27(3mg/kg)
ADC-26(3mg/kg)
空白对照(Blank)：pH7.4的PBS缓冲液。
2、配制方法：pH7.4的PBS缓冲液。
3、试验动物
BALB/cA-nude裸小鼠：购自上海杰思捷实验动物有限责任公司。
三、试验方法
实验用BALB/cA-nude裸小鼠，雌性，6-7周，皮下接种人脑星形胶质母细胞瘤U87MG细胞(人脑星形胶质母细胞瘤，中科院细胞库，Catalog#TCHu138)。接种细胞后第十天，将动物随机分组(D0)，每组8只，开始腹腔注射给药1次/周，共给药3次，每周测2－3次瘤体积和体重，记录数据。肿瘤体积(V)计算公式为：
V＝1/2×a×b 2
其中a、b分别表示长、宽。
相对体积(RTV)＝V T/V 0
抑瘤率(％)＝(C RTV-T RTV)/C RTV(％)
其中V 0、V T分别为实验开始时及实验结束时的肿瘤体积。C RTV、T RTV分别为实验结束时的对照组(空白)及实验组的相对肿瘤体积。
四、试验结果
腹腔注射(i.p.)给药每周1次，共给药3次，观察至第22天时，ADC-27 3mg/kg的抑瘤率达到63.3％(P<0.0001)；ADC-26 3mg/kg的抑制率达到49.1％。ADC-27显示出比ADC-26更强的抗肿瘤疗效。
给药过程中各组动物体重正常，提示ADC无明显毒副作用。检测结果如表4和图5所示。所检测抗体能够有效抑制荷瘤裸鼠中U87MG移植瘤的生长，并且呈现出剂量依赖性。
表4.给药抗体对人脑星形胶质母细胞瘤U87MG裸小鼠移植瘤的疗效(D22)
Figure PCTCN2021082854-appb-000115
***表示P<0.001
测试例1-8：ADC对人咽头癌胸水转移细胞Detroit 562裸小鼠移植瘤的疗效评价
一、试验目的
本实验以BALB/cA-nude裸小鼠为受试动物，评价本披露ADC化合物对人咽头癌胸水转移细胞Detroit 562裸小鼠移植瘤的疗效。
二、受试药物及材料
1、受试药物
ADC-29(3mg/kg)
ADC-28(3mg/kg)
阴性对照ADC(3mg/kg)：非B7H3靶点抗体与化合物20偶联形成的抗体药物偶联物。
2、配制方法：均用PBS稀释配制。
3、试验动物
BALB/cA-nude裸小鼠：购自常州卡文斯实验动物有限责任公司。
三、试验方法
实验用BALB/cA-nude裸小鼠，雌性，6-7周，皮下接种人咽头癌胸水转移细胞Detroit 562细胞(ATCC，Catalog
Figure PCTCN2021082854-appb-000116
CCL-138 TM)。接种细胞后第十天，将动物随机分组(D0)，每组8只，开始腹腔注射给药1次/周，共给药3次，每周测2－3次瘤体积和体重，记录数据。肿瘤体积(V)计算公式为：
V＝1/2×a×b 2
其中a、b分别表示长、宽。
相对体积(RTV)＝V T/V 0
抑瘤率(％)＝(C RTV-T RTV)/C RTV(％)
其中V 0、V T分别为实验开始时及实验结束时的肿瘤体积。C RTV、T RTV分别为实验结束时的对照组(阴性对照)及实验组的相对肿瘤体积。
四、试验结果
腹腔注射给药每周1次，共给药3次，观察至第28天时，受试ADC抑瘤率分别是：ADC-29 3mg/kg(3mpk)的抑瘤率达到72.27％(P<0.001)；ADC-28 3mg/kg(3mpk)的抑瘤率达到56.2％(P<0.001)。ADC-29均显示出比ADC-28更强的抗肿瘤疗效。
给药过程中各组动物体重正常，提示ADC无明显毒副作用。检测结果如表5和图6所示。所检测抗体能够有效抑制荷瘤裸鼠中Detroit 562移植瘤的生长，并且呈现出剂量依赖性。
表5.给药抗体对荷瘤裸鼠Detroit 562移植瘤的疗效(D28)
Figure PCTCN2021082854-appb-000117
***表示P<0.001
测试例1-9：U87-MG荷瘤小鼠药效评价
一、试验目的
以Balb/c裸鼠为受试动物，在其人胶质瘤细胞U87MG移植瘤模型上评价B7H3-抗体药物偶连物腹腔注射后的疗效。
二、受试药物及材料
1、受试药物
ADC-30 1mg/kg
ADC-30 3mg/kg
ADC-31 1mg/kg
ADC-31 3mg/kg
空白对照(Blank)：PBS
2、配制方法：均用PBS稀释配制。
3、试验动物
BALB/cA-nude裸小鼠：购自上海斯莱克实验动物有限责任公司。
三、试验方法
在小鼠右肋部皮下接种U87MG细胞(人脑星形胶质母细胞瘤，中科院细胞库，Catalog#TCHu138)(2.5×10 6/只)，肿瘤生长14天，长至167.49mm3后将动物随机分组(d1)，8只/组，共5组。
采用腹腔注射给药1次/周，共给药3次。每周测量2次瘤体积和体重，记录 数据。
数据统计使用Excel 2003统计软件：平均值以avg计算；SD值以STDEV计算；SEM值以STDEV/SQRT计算；组间差异P值以TTEST计算。
肿瘤体积(V)计算公式为：V＝1/2×L 长×L 短 2
相对体积(RTV)＝V T/V 0
抑瘤率(％)＝(C RTV-T RTV)/C RTV(％)
其中V 0、V T分别为实验开始时及实验结束时的肿瘤体积。C RTV、T RTV分别为实验结束时的空白对照组(Vehicle)及实验组的相对肿瘤体积。
四、试验结果
实验结果如图7显示，腹腔注射给药1次/周，共给药3次，观察至第18天时，受试ADC抑瘤率分别为：ADC-30 1mg/kg的抑瘤率为0.31％；ADC-30 3mg/kg的抑瘤率达到45.23％(P<0.0001)；ADC-31 1mg/kg的抑瘤率达到39.22％(P<0.01)；ADC-31 3mg/kg的抑瘤率达到80.24％(P<0.0001)。在同等剂量情况下，ADC-31的抑瘤效果明显好于ADC-30。
二、制剂
制剂制备与检测过程中使用的设备及结果计算方法如下：
SEC分子排阻色谱法：
根据凝胶孔隙的孔径大小与高分子样品分子的线团尺寸间的相对关系而对溶质进行分离的分析的方法。
SEC％(SEC单体含量百分比)＝A单体/A总*100％(A单体为样品中主峰单体的峰面积，A总为所有峰面积之和。)
SEC测定用仪器：安捷伦1260；柱子：waters，XBrige
Figure PCTCN2021082854-appb-000118
SEC(300×7.8mm 3.5μm)
CE毛细管凝胶电泳：
将凝胶移到毛细管中作为支持介质进行的一种电泳，并在一定的电压下根据样品分子量的大小进行分离的方法。
还原CE纯度百分比＝A主峰/A总*100％(A主峰为样品中轻链主峰+重链主峰的峰面积，A总为所有峰面积之和。
CE测定用仪器：Beckman型号plus800
浊度测定：
光线透过水层时受到阻碍的程度，表示水层对于光线散射和吸收的能力，不仅与悬浮物的含量有关，而且还与颗粒成分、大小、形状及其表面的反射性能有关。通过对比同一蛋白样品相同浓度且同一波长(近紫外和可见光波长区域)吸收值，吸收值越大说明浊度越大，样品中蛋白分子聚集倾向越明显。测定仪器为多功能酶标仪(Molecular Devices M5)，相同体积样品加入96孔板读取吸光度值。
渗透压测定：
冰点法测定渗透压，以冰点下降值与溶液的摩尔浓度成正比例关系为基础，采用高灵敏度感温元件，测定溶液结冰点，通过电量转化为渗透压。仪器厂家罗泽Loser，型号OM815。
蛋白浓度测定：
因为抗体药物偶联物中的毒素在280nm下有吸收，用以下公式对蛋白浓度进行校正，
A280＝Cd*ε280d+Cmab*ε280mab
A370＝Cd*ε370d
Cd代表毒素的浓度，Cmab代表蛋白的浓度，ε280d代表毒素在280nm下的消光系数，ε280mab代表蛋白在280nm下的消光系数，ε370d代表毒素在370nm下的消光系数，ε280mab＝1.49mg-1*cm-1*ml,ε280d＝5000(280nm毒素摩尔消光系数)/1074.13(毒素分子量)＝4.65mg-1*cm-1*mL，ε370d＝19000(370nm毒素摩尔消光系数)/1074.13(毒素分子量)＝17.69mg-1*cm-1*mL，以上消光系数为质量消光系数。
蛋白浓度测定仪器：紫外可见分光光度计，型号：Nano Drop oneC，光程为1mm。
示例性的，裸抗体分子量为145.181kDa，毒素分子量为1074Da，如按照平均DAR值5.7计算，ADC分子量为151.317kDa，为裸抗体的1.042倍。示例性的，如ADC DAR值为5.7，裸抗体蛋白的浓度为20.00mg/mL，那么ADC的浓度为20.84mg/mL。
实施例2-1.制剂缓冲体系与pH值的筛选
采用以下不同缓冲体系，配制ADC-33蛋白浓度为20mg/mL(以裸抗体浓度计)的制剂(除下述缓冲体系外，该制剂不含糖、表面活性剂和其他缓冲剂)：
1)10mM组氨酸-醋酸钠，pH 5.0
2)10mM组氨酸-醋酸钠，pH 5.5
3)10mM组氨酸-醋酸钠，pH 6.0
4)10mM组氨酸-醋酸钠，pH 6.5
5)10mM组氨酸-组氨酸盐酸，pH 5.5
6)10mM琥珀酸-琥珀酸钠，pH 5.5
7)10mM枸橼酸-枸橼酸钠，pH 5.5
取样品进行高温稳定性研究(40℃)和振摇研究(25℃，300rpm)。其中振摇样品含0.1mg/mL聚山梨酯80(PS80)，其他样品含0.4mg/mL PS80。将每种制剂过滤，灌装，加塞，轧盖。将样品进行上述强制降解实验，考察外观、SEC、浊度。
结果见表6。结果表明，采用组氨酸-醋酸钠作为缓冲剂，在pH5.0-6.5范围内，随着pH升高，样品外观逐渐变差，浊度升高，SEC单体比例下降。在pH 5.5条 件下，采用10mM组氨酸-醋酸钠与10mM组氨酸盐酸盐的样品的外观与SEC％相近，并依次优于10mM琥珀酸-琥珀酸钠、10mM枸橼酸-枸橼酸钠。令人吃惊的是，含10mM琥珀酸-琥珀酸钠的制剂在进行振摇研究后，浊度显著优于其他组制剂。
表6.pH和缓冲体系稳定性结果
Figure PCTCN2021082854-appb-000119
备注：表中“D”表示天，例如D12表示12天；D0表示实验开始时，下同。
实施例2-2 表面活性剂种类筛选
制备含有不同聚山梨酯表面活性剂，且均含有10mM琥珀酸-琥珀酸钠(pH5.0)缓冲液、80mg/mL蔗糖和蛋白浓度为20mg/mL(以裸抗体浓度计)的ADC-32的制剂。将每种制剂过滤，灌装，加塞，轧盖。将样品进行高温稳定性研究(40℃)和振摇研究(25℃，300rpm)，考察外观、SEC、还原CE。
结果见表7，含有PS20(聚山梨酯20)与PS80的处方，不同条件下外观、SEC、还原CE均无显著差异，表明PS20与PS80均可有效的稳定ADC-32。
表7.聚山梨酯种类筛选结果
Figure PCTCN2021082854-appb-000120
Figure PCTCN2021082854-appb-000121
实施例2-3 表面活性剂浓度筛选
制备PS80浓度依次为0、0.1、0.2、0.4、0.6mg/mL的样品，各样品中还含有10mM琥珀酸-琥珀酸钠(pH5.0)，80mg/mL蔗糖和蛋白浓度为20mg/mL(以裸抗体浓度计)的ADC-32，过滤除菌除颗粒，采用0.9％NaCl进行稀释，稀释后ADC-32浓度为0.2mg/mL，考察稀释药液外观、不溶性微粒。
结果见表8，处方中PS80浓度在0-0.2mg/mL时随着浓度的增加，稀释液中不溶性微粒增加幅度降低且可见颗粒越来越少，浓度在0.2-0.6mg/mL时稀释液中不溶性微粒无显著差异且外观良好。
表8.PS80浓度筛选结果
Figure PCTCN2021082854-appb-000122
实施例2-4 糖种类筛选
制备含有80mg/mL蔗糖、海藻糖、甘露醇的不同样品，各样品中还含有10mM琥珀酸-琥珀酸钠(pH5.0)，0.2mg/mL PS80和蛋白浓度为20mg/mL(以裸抗体浓度计)的ADC-32，过滤除菌除颗粒，将每种制剂过滤，灌装，加塞，轧盖。将样品进行高温稳定性研究(40℃)和-35℃/4℃冻融循环研究，考察外观、SEC、还原CE。
结果见表9，冻融条件外观蔗糖优于海藻糖和甘露醇，SEC结果显示蔗糖和海藻糖优于甘露醇，40℃条件还原CE结果显示蔗糖略优于海藻糖。
表9.糖种类筛选结果
Figure PCTCN2021082854-appb-000123
Figure PCTCN2021082854-appb-000124
实施例2-5 pH、抗体药物偶联物浓度和聚山梨酯筛选实验
以10mM琥珀酸-琥珀酸钠为缓冲液，80mg/mL蔗糖为稳定剂，针对pH、ADC-32蛋白浓度(以裸抗体计)和聚山梨酯浓度进行处方设计，见表10，通过高温稳定性研究(40℃)、光照研究(4℃，4500Lx)和-35℃/4℃冻融循环研究，以SEC、还原CE为评价指标，采用最小二乘法对结果进行统计分析。
结果见表11和图8，本披露的制剂显示出高度的pH依赖性，在光照、振摇和40℃条件下，随着pH升高，SEC下降值增大；同样的，光照条件下还原CE随pH升高单体峰下降值增大；提示本披露的制剂应采用低pH条件以提高稳定性。振摇条件下随PS80浓度增加，SEC下降值有减小趋势，其它条件PS80对SEC、还原CE影响无差异。随着ADC-32蛋白浓度增加，40℃条件SEC单体峰下降增多，其它条件下ADC-32蛋白浓度对SEC、还原CE影响无明显趋势。
表10.筛选实验处方设计
Figure PCTCN2021082854-appb-000125
表11.处方筛选实验结果
Figure PCTCN2021082854-appb-000126
Figure PCTCN2021082854-appb-000127
实施例2-6 冻干工艺开发实验
按照10mM琥珀酸-琥珀酸钠pH5.0、80mg/mL蔗糖、0.2mg/mL PS80和20mg/mL(蛋白浓度，以裸抗体计)ADC-33配制原液，过滤灌装后按照冻干工艺参数1冻干(见表12)，冻干样品为表面平整白色粉饼，粉饼底部中间略有塌陷，水分1.05％，注射用水复溶后测定pH，结果见表13，离子强度≥10mM均能够满足缓冲作用，该处方蔗糖为80mg/mL可以满足等渗。
表12.冻干工艺参数1
冻干工艺参数 设定温度(℃) 设定时间(min) 保持时间(h) 真空度(Pa)
预冻 5 10 1 N/A
预冻 -45 50 2 N/A
一次干燥 -25 120 40 10
二次干燥 25 60 8 1
表13.最终处方pH和渗透压结果
缓冲液pH 原液渗透压 原液pH 复溶后pH
5.00 298mosm 5.06 5.06
按照10mM琥珀酸-琥珀酸钠pH5.0、80mg/mL蔗糖、0.2mg/mL PS80和20mg/mL(蛋白浓度，以裸抗体计)ADC-33配制原液，过滤灌装后按照冻干工艺参数2冻干(见表14)，粉饼表面平整无皱缩，无塌陷，水分0.89％，该冻干工艺能够满足产品质量要求。
表14.冻干工艺参数2
冻干工艺参数 设定温度(℃) 设定时间(min) 保持时间(h) 真空度(Pa)
预冻 -5 10 1 N/A
预冻 -45 40 2 N/A
一次干燥 -20 120 35 10
二次干燥 25 60 8 1
按照10mM琥珀酸-琥珀酸钠pH5.0、80mg/mL蔗糖、0.2mg/mL PS80和20mg/mL(蛋白浓度，以裸抗体计)ADC-32配制原液，过滤灌装后按照冻干工艺参数3冻干(见表15)，粉饼表面平整无塌陷，粉饼底部边缘略有缩小，水分1.17％，该冻干工艺基本满足产品质量要求。
表15.冻干工艺参数3
Figure PCTCN2021082854-appb-000128
实施例2-7 长期稳定性数据
按照10mM琥珀酸-琥珀酸钠pH5.0、80mg/mL蔗糖、0.2mg/mL PS80和蛋白浓度，20mg/mL(以裸抗体计)ADC-32配制原液，过滤灌装后按照冻干工艺参数2配制原液中试批次成品，在2～8℃长期保存，复溶后检测，结果见表16，2～8℃M3与D0相比，SEC、还原CE、游离毒素均在可接受范围内(SEC％≥93％；还原CE％≥95％；游离毒素≤330ppm)，除SEC略有下降0.5％，还原CE和游离毒素均无变化。
表16.长期稳定性数据结果
Figure PCTCN2021082854-appb-000129
备注：表中“M”表示月，例如M3表示3个月。

Claims (19)

  1. 一种药物组合物，包含抗体药物偶联物和缓冲剂，其中所述抗体药物偶联物具有如通式(Pc-L-Y-D)所示的结构：
    Figure PCTCN2021082854-appb-100001
    其中：
    Y选自-O-(CR aR b) m-CR 1R 2-C(O)-、-O-CR 1R 2-(CR aR b) m-、-O-CR 1R 2-、-NH-(CR aR b) m-CR 1R 2-C(O)-和-S-(CR aR b) m-CR 1R 2-C(O)-；
    R a和R b相同或不同，且各自独立地选自氢原子、氘原子、卤素、烷基、卤代烷基、氘代烷基、烷氧基、羟基、氨基、氰基、硝基、羟烷基、环烷基和杂环基；
    或者，R a和R b与其相连接的碳原子一起形成环烷基或杂环基；
    R 1选自卤素、卤代烷基、氘代烷基、环烷基、环烷基烷基、烷氧基烷基、杂环基、芳基和杂芳基；
    R 2选自氢原子、卤素、卤代烷基、氘代烷基、环烷基、环烷基烷基、烷氧基烷基、杂环基、芳基和杂芳基；
    或者，R 1和R 2与其相连接的碳原子一起形成环烷基或杂环基；
    或者，R a和R 2与其相连的碳原子一起形成环烷基或杂环基；
    m为0至4的整数；
    n为1至10，n是小数或整数；
    L为接头单元；
    Pc为抗体或其抗原结合片段；
    所述药物组合物的pH为4.5至5.2，优选pH为4.8至5.2，更优选pH为5.0至5.1。
  2. 根据权利要求1所述的药物组合物，其中所述药物组合物还包含表面活性剂，所述表面活性剂优选为聚山梨酯，更优选为聚山梨酯80或聚山梨酯20，最优选为聚山梨酯80。
  3. 根据权利要求2所述的药物组合物，其中所述表面活性剂的浓度为约0.01 mg/mL至约1.0mg/mL，优选为约0.05mg/mL至约0.5mg/mL，更优选为约0.2mg/mL。
  4. 根据权利要求1至3任一项所述的药物组合物，其中所述组合物还包含糖，所述糖优选选自蔗糖、甘露醇、山梨醇和海藻糖，更优选为蔗糖。
  5. 根据权利要求4所述的药物组合物，其中所述糖的浓度为约60mg/mL至约90mg/mL，优选为约80mg/mL。
  6. 根据权利要求1至5任一项所述的药物组合物，其中所述抗体药物偶联物的浓度为约1mg/mL至约100mg/mL，优选为约10mg/mL至约30mg/mL，更优选为约20mg/mL至约22mg/mL。
  7. 根据权利要求1至6任一项所述的药物组合物，其中所述缓冲剂选自组氨酸盐缓冲剂、琥珀酸盐缓冲剂和枸橼酸盐缓冲剂，优选为琥珀酸盐缓冲剂，更优选为琥珀酸-琥珀酸钠缓冲剂。
  8. 根据权利要求1至7任一项所述的药物组合物，其中所述缓冲剂的浓度为约5mM至约50mM，优选为约5mM至约20mM，更优选为约10mM。
  9. 根据权利要求1至8任一所述的药物组合物，其包含如下组分：
    (a)约10mg/mL至约30mg/mL的所述抗体药物偶联物，(b)约0.05mg/mL至约0.5mg/mL的聚山梨酯，(c)约60mg/mL至约90mg/mL的糖，和(d)约5mM至约20mM的缓冲剂；所述药物组合物的pH为4.8-5.2；
    优选地，所述药物组合物包含如下组分：
    (a)约20mg/mL至约22mg/mL的所述抗体药物偶联物，(b)约0.2mg/mL的聚山梨酯80，(c)约80mg/mL的蔗糖，和(d)约10mM琥珀酸盐缓冲剂，所述组合物的pH为5.0-5.1。
  10. 根据权利要求1至9任一项所述的药物组合物，其中所述的抗体药物偶联物具有如下式所示的结构：
    Figure PCTCN2021082854-appb-100002
    其中：
    n为3至8，n是小数或整数；
    Pc为抗体或其抗原结合片段。
  11. 根据权利要求1至10任一项所述的药物组合物，其中所述的抗体或其抗原结合片段选自抗HER2(ErbB2)抗体、抗EGFR抗体、抗B7-H3抗体、抗c-Met抗体、抗HER3(ErbB3)抗体、抗HER4(ErbB4)抗体、抗CD20抗体、抗CD22抗体、抗CD30抗体、抗CD33抗体、抗CD44抗体、抗CD56抗体、抗CD70抗体、抗CD73抗体、抗CD105抗体、抗CEA抗体、抗A33抗体、抗Cripto抗体、抗EphA2抗体、抗G250抗体、抗MUCl抗体、抗Lewis Y抗体、抗VEGFR抗体、抗GPNMB抗体、抗Integrin抗体、抗PSMA抗体、抗Tenascin-C抗体、抗SLC44A4抗体和抗Mesothelin抗体，或其抗原结合片段；
    优选地，所述的抗体或其抗原结合片段选自Trastuzumab、Pertuzumab、Nimotuzumab、Enoblituzumab、Emibetuzumab、Inotuzumab、Pinatuzumab、Brentuximab、Gemtuzumab、Bivatuzumab、Lorvotuzumab、cBR96和Glematumamab，或其抗原结合片段。
  12. 根据权利要求1至11任一项所述的药物组合物，其中所述的抗体偶联物具有如下式所示的结构：
    Figure PCTCN2021082854-appb-100003
    其中，n为3至8，n是小数或整数。
  13. 一种药物组合物，其包含具有如下式所示的结构的抗体药物偶联物：
    Figure PCTCN2021082854-appb-100004
    其中，n为3至8，n是小数或整数；
    并且，所述药物组合物包含：
    (a)约10mg/mL至约30mg/mL的所述抗体药物偶联物，(b)约0.05mg/mL至约0.5mg/mL的聚山梨酯，(c)约60mg/mL至约90mg/mL的糖，和(d)约5mM至约20mM的缓冲剂；所述药物组合物的pH为4.8至5.2；
    优选地，所述药物组合物包含：(a)约20mg/mL至约22mg/mL的所述抗体药物偶联物，(b)约0.2mg/mL的聚山梨酯80，(c)约80mg/mL的蔗糖，和(d)约10mM琥珀酸盐缓冲剂，所述药物组合物的pH为5.0至5.1。
  14. 一种包含抗体药物偶联物的冻干制剂，其特征在于所述制剂复溶后可形成权利要求1至13中任一项所述的药物组合物。
  15. 一种制备包含抗体药物偶联物的冻干制剂的方法，其中包括将权利要求1至13中任一项所述的药物组合物冷冻干燥的步骤。
  16. 一种包含抗体药物偶联物的冻干制剂，所述制剂通过将权利要求1至13中任一项所述的药物组合物冷冻干燥获得。
  17. 一种包含抗体药物偶联物的复溶溶液，其特征在于所述复溶溶液是通过将权利要求14或16所述的冻干制剂复溶获得；
    优选地，所述复溶溶液包含如下组分：
    (a)约10mg/mL至约30mg/mL的所述抗体药物偶联物，(b)约0.05mg/mL至约0.5mg/mL的聚山梨酯，(c)约60mg/mL至约90mg/mL的糖，和(d)约5mM至约20mM的缓冲剂；所述复溶溶液的pH为4.8至5.2；
    更优选地，所述复溶溶液包含如下组分：
    (a)约20mg/mL至约22mg/mL的抗体药物偶联物，(b)约0.2mg/mL的聚山梨酯80，(c)约80mg/mL的蔗糖，和(d)约10mM琥珀酸盐缓冲剂，所述复溶溶液的pH为5.0至5.1。
  18. 一种制品，其包括容器，该容器中装有如权利要求1至13任一项所述的药物组合物、权利要求14或16所述的冻干制剂或权利要求17所述的复溶溶液。
  19. 一种治疗疾病的方法，包括给予患者有效量的权利要求1至13任一项所述的药物组合物、权利要求14或16所述的冻干制剂、权利要求17所述的复溶溶液或权利要求18所述制品；优选地，所述的疾病为与HER2、HER3、B7H3或EGFR表达相关的癌症；更优选地，所述癌症选自乳腺癌、卵巢癌、宫颈癌、子宫癌、前列腺癌、肾癌、尿道癌、膀胱癌、肝癌、胃癌、子宫内膜癌、唾液腺癌、食道癌、黑色素瘤、神经胶质瘤、神经母细胞瘤、肉瘤、肺癌、结肠癌、直肠癌、结直肠癌、白血病、骨癌、皮肤癌、甲状腺癌、胰腺癌和淋巴瘤。
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WO2023001248A1 (zh) * 2021-07-21 2023-01-26 江苏恒瑞医药股份有限公司 一种含抗trop2抗体药物偶联物的药物组合物及其用途
US11814394B2 (en) 2021-11-16 2023-11-14 Genequantum Healthcare (Suzhou) Co., Ltd. Exatecan derivatives, linker-payloads, and conjugates and thereof
WO2023143347A1 (zh) * 2022-01-26 2023-08-03 上海迈晋生物医药科技有限公司 一种包含抗CD79b抗体药物偶联物的药物组合物及其用途
WO2023241663A1 (zh) * 2022-06-15 2023-12-21 上海翰森生物医药科技有限公司 一种含抗体药物偶联物的药物组合物及其用途
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