WO2018181059A1 - ヘテロ二官能性単分散ポリエチレングリコール及びそれを用いた複合体 - Google Patents
ヘテロ二官能性単分散ポリエチレングリコール及びそれを用いた複合体 Download PDFInfo
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- WO2018181059A1 WO2018181059A1 PCT/JP2018/011883 JP2018011883W WO2018181059A1 WO 2018181059 A1 WO2018181059 A1 WO 2018181059A1 JP 2018011883 W JP2018011883 W JP 2018011883W WO 2018181059 A1 WO2018181059 A1 WO 2018181059A1
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- polyethylene glycol
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Images
Classifications
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- A61K47/00—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
- 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
- A61K47/6883—Polymer-drug antibody conjugates, e.g. mitomycin-dextran-Ab; DNA-polylysine-antibody complex or conjugate used for therapy
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- A61K31/7034—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a carbocyclic compound, e.g. phloridzin
- A61K31/704—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a carbocyclic compound, e.g. phloridzin attached to a condensed carbocyclic ring system, e.g. sennosides, thiocolchicosides, escin, daunorubicin
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- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/34—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyesters, polyamino acids, polysiloxanes, polyphosphazines, copolymers of polyalkylene glycol or poloxamers
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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
- A61K47/56—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 organic macromolecular compound, e.g. an oligomeric, polymeric or dendrimeric molecule
- A61K47/59—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 organic macromolecular compound, e.g. an oligomeric, polymeric or dendrimeric molecule obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyureas or polyurethanes
- A61K47/60—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 organic macromolecular compound, e.g. an oligomeric, polymeric or dendrimeric molecule obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyureas or polyurethanes the organic macromolecular compound being a polyoxyalkylene oligomer, polymer or dendrimer, e.g. PEG, PPG, PEO or polyglycerol
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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
- A61K47/6801—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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- 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
- A61K47/6889—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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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/24—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against cytokines, lymphokines or interferons
- C07K16/244—Interleukins [IL]
- C07K16/245—IL-1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/32—Polymers modified by chemical after-treatment
- C08G65/329—Polymers modified by chemical after-treatment with organic compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/32—Polymers modified by chemical after-treatment
- C08G65/329—Polymers modified by chemical after-treatment with organic compounds
- C08G65/333—Polymers modified by chemical after-treatment with organic compounds containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/32—Polymers modified by chemical after-treatment
- C08G65/329—Polymers modified by chemical after-treatment with organic compounds
- C08G65/333—Polymers modified by chemical after-treatment with organic compounds containing nitrogen
- C08G65/33396—Polymers modified by chemical after-treatment with organic compounds containing nitrogen having oxygen in addition to nitrogen
Definitions
- the present invention relates to a heterobifunctional monodisperse polyethylene glycol having two different chemically reactive functional groups. More specifically, it is used for the modification of bioactive molecules such as bioactive proteins, peptides, antibodies, nucleic acids and small molecule drugs, drug carriers in drug delivery systems, or diagnostic materials and medical devices.
- the present invention relates to a heterobifunctional monodisperse polyethylene glycol useful for the present invention and a composite using the same.
- Antibody-Drug Conjugate is an antibody drug that aims to actively deliver a drug to a disease site by binding a drug to the antibody and using the antigen specificity of the antibody. In recent years, it is one of the fastest growing technologies in the field of cancer treatment.
- An ADC is composed of an antibody, a drug, and parts of a linker that binds the antibody to the drug.
- Drugs used in ADCs are often hydrophobic, and when ADCs are prepared by binding multiple of these hydrophobic drugs to an antibody, problems such as aggregation due to the hydrophobicity of the drug and decreased antibody stability in the blood It becomes. Therefore, the number of drugs that can be loaded per antibody is limited, and as a result, the ADC may not be fully effective.
- hydrophilic linker Polyethylene glycol, hydrophilic peptides, sugar chains, etc. are used as hydrophilic linkers, and in particular, polyethylene glycol has low antigenicity and high biocompatibility. Used in ADC.
- a compound containing 90% or more of a component having a specific ethylene glycol chain length is used for the purpose of ensuring homogeneity of ADC and simplifying purification, analysis and drug application.
- Such a compound is referred to as monodisperse polyethylene glycol.
- ADC When using monodispersed polyethylene glycol as a linker for ADC, it is necessary to distinguish and bind an antibody and a drug. Therefore, a heterobifunctional monodispersed polyethylene glycol having two different chemically reactive functional groups is used.
- ADCs are prepared using compounds having different chemically reactive functional groups at both ends of a monodisperse polyethylene glycol chain.
- Non-Patent Document 1 pharmacokinetics of ADC using monodispersed polyethylene glycol as a linker main chain connecting an antibody and a drug, and ADC using monodispersed polyethylene glycol as a side chain in a branched linker connecting an antibody and a drug, The therapeutic effects are compared, and the latter is reported to have a higher masking effect on the hydrophobicity of the drug and to exhibit superior pharmacokinetics and therapeutic effects.
- Patent Document 2 and Patent Document 3 disclose various types of ADCs having monodisperse polyethylene glycol as a side chain of a branched linker, and intermediates for preparing them.
- Patent Document 1 describes a polyethylene glycol derivative having a pentaerythritol skeleton and having two polyethylene glycol chains and two functional groups.
- Patent Document 1 discloses only a compound having two identical functional groups and two identical polyethylene glycol chains in a pentaerythritol skeleton. This is because the functionalization reaction protects the two hydroxyl groups of pentaerythritol with a protective group, adds EO, removes the protective group, and performs functionalization.
- Patent Document 1 The ADC described in Non-Patent Document 1, Patent Document 2 and Patent Document 3 having monodispersed polyethylene glycol as a side chain of a branched linker is an amino acid having an asymmetric carbon in the branched portion of the linker to which the monodispersed polyethylene glycol is bonded. Is used.
- Patent Document 2 and Patent Document 3 ADCs having two or more monodispersed polyethylene glycols in the side chain of the branched linker are also disclosed.
- each monodisperse polyethylene glycol side chain is separated from each other, and the “umbrella-like” structure “Biomaterials 2001, 22 (5), which is characteristic of branched polyethylene glycol having a plurality of polyethylene glycol chains. ), Pp. 405-417 ”, the shielding effect of hydrophobic drugs is small, and the advantage of having a plurality of monodisperse polyethylene glycol side chains cannot be utilized effectively.
- An object of the present invention is to provide a heterobifunctional monodisperse polyethylene glycol having two monodisperse polyethylene glycol side chains adjacent to each other and having no chiral center in the molecular structure, and using this to bind an antibody and a drug Antibody-drug conjugates.
- the heterobifunctional monodisperse polyethylene glycol of the present invention has two monodisperse polyethylene glycol side chains bonded to the quaternary carbon atom of the branched portion with a stable ether bond, so In the chemical conversion process of the structure of the dispersed polyethylene glycol, it is difficult to decompose into a single-chain monodispersed polyethylene glycol.
- X 1 and Y 1 are each an atomic group including at least a functional group that reacts with a functional group present in the biofunctional molecule to form a covalent bond, and the functional group included in the atomic group X 1 and the atomic group Y 1 Said functional groups comprising are different from each other;
- R 1 is a hydrocarbon group having 1 to 7 carbon atoms or a hydrogen atom;
- n is an integer from 3 to 72;
- a 1 is -L 1 - (CH 2) m1 -, - L 1 - (CH 2) m1 -L 2 - (CH 2) m2 - or a single bond,
- L 1 is an ether bond, amide bond, urethane bond Represents a secondary amino group or a single bond,
- L 2 represents an ether bond, an amide bond or a urethane bond, m1 and m2
- a 1 in Formula (1) is represented by -NHC (O)-(CH 2 ) m1 -or -NHC (O)-(CH 2 ) m1 -L 2- (CH 2 ) m2- , and B 1 is - (CH 2) m3 - or - (CH 2) m3 -L 4 - (CH 2) m4 - represented by heterobifunctional monodisperse polyethylene glycol [1].
- a 1 is represented by —CH 2 — or —CH 2 —L 2 — (CH 2 ) m2 —
- B 1 is —CH 2 — or —CH 2 —L 4 —
- a 1 is represented by -O- (CH 2 ) m1 -or -O- (CH 2 ) m1 -L 2- (CH 2 ) m2- and B 1 is -CH 2 - or -CH 2 -L 4 - (CH 2 ) m4 - represented by heterobifunctional monodisperse polyethylene glycol [1].
- a 1 is represented by -C (O) NH- (CH 2 ) m1 -or -C (O) NH- (CH 2 ) m1 -L 2- (CH 2 ) m2- And the heterobifunctional monodisperse polyethylene glycol according to [1], wherein B 1 is represented by —CH 2 — or —CH 2 —L 4 — (CH 2 ) m4 —.
- a 1 in formula (1) is represented by -C (O) NH- (CH 2 ) m1 -or -C (O) NH- (CH 2 ) m1 -L 2- (CH 2 ) m2- and B 1 is -C (O) NH- (CH 2 ) m3 - or -C (O) NH- (CH 2 ) m3 -L 4 - (CH 2) m4 - represented by [1] Heterobifunctional monodisperse polyethylene glycol.
- X 1 and Y 1 in Formula (1) are each independently Formula (a), Formula (b1), Formula (b2), Formula (c), Formula (d), Formula (e), Formula (f), Formula (g), Formula (h), Formula (i), Formula (j), Formula (k), Formula (l), Formula (m), Formula (n), and Formula (o)
- R 2 is a hydrogen atom or a hydrocarbon group having 1 to 5 carbon atoms
- R 3 is a halogen atom selected from a chlorine atom, a bromine atom and an iodine atom
- R 4 is a hydrogen atom or a hydrocarbon group having 1 to 5 carbon atoms. .
- An antibody-drug conjugate comprising a heterobifunctional monodisperse polyethylene glycol represented by the formula (2).
- One of X 2 and Y 2 is an antibody and the other is a drug;
- R 1 is a hydrocarbon group having 1 to 7 carbon atoms or a hydrogen atom;
- n is an integer from 3 to 72;
- a 2 represents -L 1- (CH 2 ) m1 -L 5- , -L 1- (CH 2 ) m1 -L 2- (CH 2 ) m2 -L 5 -or a single bond,
- L 1 represents an ether A bond, an amide bond, a urethane bond, a secondary amino group or a single bond,
- L 2 represents an ether bond, an amide bond or a urethane bond,
- m1 and m2 each independently represents an integer of 1 to 5, and
- L 5 Is an amide bond, urethane bond, thioether bond, disulfide bond, carbon
- the heterobifunctional monodisperse polyethylene glycol according to the present invention does not have a chiral center, problems such as undesired partial steric inversion and racemization of the chiral center do not occur fundamentally in the chemical conversion process. Since the monodisperse polyethylene glycol side chain is bonded to the quaternary carbon atom of the branched portion with a stable ether bond, it is difficult to decompose into a single-chain monodisperse polyethylene glycol in the chemical conversion process. Therefore, an antibody-drug complex with high homogeneity can be obtained by binding an antibody and a drug using the heterobifunctional monodispersed polyethylene glycol.
- the hydrophobic drug has a great shielding effect when an antibody-drug complex is prepared. It is possible to suppress the occurrence of aggregation due to the hydrophobicity of the drug and the decrease in blood stability of the antibody.
- 6 is a chart of HPLC measurement using the hydrophobic interaction chromatography (HIC) column of Example 8.
- HIC hydrophobic interaction chromatography
- Comparative Example 7 6 is a HPLC measurement chart using the hydrophobic interaction chromatography (HIC) column of Example 11 for the drug-linker compound of the formula (30) obtained in Example 7.
- FIG. 6 is a chart of HPLC measurement using the hydrophobic interaction chromatography (HIC) column of Comparative Example 16 for the drug-linker compound of the formula (41) obtained in Comparative Example 6.
- 16 is a chart of HPLC measurement using the hydrophobic interaction chromatography (HIC) column of Comparative Example 17 for the drug-linker compound of the formula (47) obtained in Comparative Example 15.
- heterofunctional means having two different chemically reactive functional groups
- monodisperse polyethylene glycol means 90% of a component having a specific ethylene glycol chain length. It is a compound contained above. Further, “having no chiral center” means that it can be superimposed on a mirror image.
- the heterobifunctional monodisperse polyethylene glycol of the present invention is represented by the formula (1).
- R 1 in the formula (1) of the present invention is a hydrocarbon group or a hydrogen atom, and the hydrocarbon group preferably has 7 or less carbon atoms.
- Specific hydrocarbon groups include methyl, ethyl, propyl, and isopropyl. Group, t-butyl group, phenyl group and benzyl group.
- a preferred embodiment of R 1 is a methyl group or a hydrogen atom, and more preferably a methyl group.
- n is an integer of 3 to 72 representing the number of repeating units of monodisperse polyethylene glycol, preferably an integer of 4 to 48, more preferably an integer of 6 to 36. Particularly preferred is an integer of 8 to 24.
- the atomic groups X 1 and Y 1 of the formula (1) are different from each other, and are biofunctional molecules (bioactive proteins, peptides, antibodies, nucleic acids) to be modified with the heterobifunctional monodisperse polyethylene glycol. And an atomic group containing at least a functional group that forms a covalent bond by reacting with a functional group present in a low molecular weight drug or the like. Examples of the functional group, "Hermanson, G. T.
- the functional groups contained in X 1 and Y 1 are each independently a functional group (amino group, thiol group, aldehyde group, carboxy group, etc.) present in natural biofunctional molecules represented by proteins, It is preferably a functional group capable of reacting under a mild reaction condition and high reaction efficiency with a functional group (maleimide group, ketone group, azide group, alkynyl group, etc.) that can be artificially introduced into a biofunctional molecule.
- active ester group, active carbonate group, aldehyde group, isocyanate group, isothiocyanate group, epoxy group, maleimide group, vinyl sulfone group, acrylic group, sulfonyloxy group, carboxy group, thiol group, 2-pyridyl Dithio group, ⁇ -haloacetyl group, hydroxy group, alkynyl group, allyl group, vinyl group, amino group, oxyamino group, hydrazide group, azide group, and dibenzocyclooctyne (DBCO) group are preferable, and further considering the reaction efficiency Active ester groups, active carbonate groups, maleimide groups, ⁇ -haloacetyl groups, alkynyl groups, azide groups and dibenzocyclooctyne (DBCO) groups are preferred.
- the functional groups contained in X 1 and Y 1 are each independently an active ester group, an active carbonate when the functional group present in the biofunctional molecule to be modified is an amino group.
- the functional group present in the biofunctional molecule is an alkynyl group, it is a thiol group or an azide group, and when the functional group present in the biofunctional molecule to be modified is an azide group, the alkynyl group Group and dibenzocyclooctyne group, and when the functional group present in the biofunctional molecule to be modified is a halogenated alkyl group, an alkyl sulfonate ester or an aryl sulfonate ester, a thiol group, a hydroxy group or It is an amino group.
- active ester group refers to an activated carboxy group represented by the formula: —C ( ⁇ O) —L, and L represents a leaving group.
- the leaving group represented by L includes succinimidyloxy group, phthalimidyloxy group, 4-nitrophenoxy group, 1-imidazolyl group, pentafluorophenoxy group, benzotriazol-1-yloxy group and 7- And azabenzotriazol-1-yloxy group.
- Activated carbonate refers to an activated carbonate group represented by the formula: —O—C ( ⁇ O) —L, and L represents a leaving group as described above.
- X 1 and Y 1 are each independently represented by group (I), group (II), group (III), group (IV), group (V) or group (VI).
- Group (I) Functional group capable of reacting with an amino group of a biofunctional molecule to form a covalent bond
- Group (a) Functional group capable of reacting with an amino group of a biofunctional molecule to form a covalent bond
- Group (II) Functional group capable of reacting with a thiol group of a biofunctional molecule to form a covalent bond
- Group (III) Functional group capable of reacting with an aldehyde group or carboxy group of a biofunctional molecule to form a covalent bond
- Group (IV) a functional group capable of reacting with an alkynyl group of
- R 2 and R 4 are a hydrogen atom or a hydrocarbon group having 1 to 5 carbon atoms, and specific hydrocarbon groups include methyl, ethyl, propyl, isopropyl, butyl, and t-butyl. Group and pentyl group.
- R 3 is a halogen atom selected from a chlorine atom, a bromine atom and an iodine atom.
- the functional group contained in Y 1 when the functional group contained in X 1 is an active ester group or an activated carbonate group, the functional group contained in Y 1 is maleimide.
- the functional group contained in Y 1 when the functional group contained in X 1 is an active ester group or an activated carbonate group, the functional group contained in Y 1 is maleimide.
- Group, vinyl sulfone group, ⁇ -haloacetyl group, alkynyl group and azide group when the functional group contained in X 1 is an aldehyde group, the functional group contained in Y 1 is a maleimide group, vinyl
- the functional group contained in Y 1 is an active ester group.
- active carbonate group an alkynyl group, a group selected from azide groups
- the functional group contained in X 1 is an alkynyl group or an azido group
- the functional group contained in Y 1 is maleimide Group, a vinyl sulfone group, alpha-haloacetyl groups, active ester group, active carbonate group, an amino group, a group selected from oxy amino group and hydroxy group
- the functional group is an amino group or an oxy amino group contained in X 1
- the functional group contained in Y 1 is a group selected from an alkynyl group, an azide group, a thiol group, a hydroxy group, and a carboxy group
- the functional group contained in X 1 is a thiol group, a 2-pyridyldithio group.
- Y 1 is a group selected from an amino group, an oxyamino group, an azide group, and a carboxy group. More preferably, when the functional group contained in X 1 is an active ester group or an activated carbonate group, the functional group contained in Y 1 is a group selected from a maleimide group, an ⁇ -haloacetyl group, an alkynyl group, and an azide group.
- the functional group contained in X 1 is an aldehyde group
- the functional group contained in Y 1 is a group selected from a maleimide group, an ⁇ -haloacetyl group, an alkynyl group and an azide group, and is contained in X 1
- the functional group included in Y 1 is a group selected from an active ester group, an active carbonate group, an alkynyl group, and an azide group
- the functional group included in X 1 when is an alkynyl group or an azido group
- the functional group is a maleimide group contained in Y 1, alpha-haloacetyl groups, active ester group, active carbonate group, an amino group, our oxyamino group
- a 1 in the formula (1) of the present invention is a divalent spacer between the quaternary carbon atom and X 1 of the branching portion
- B 1 in the formula (1) has a quaternary carbon atom of the branch portion
- a 1 is -L 1 - (CH 2) m1 -, - L 1 - (CH 2) m1 -L 2 - (CH 2) m2 - or a single bond
- L 1 is an ether bond
- An amide bond, a urethane bond, a secondary amino group or a single bond is represented
- L 2 represents an ether bond, an amide bond or a urethane bond
- m1 and m2 each independently represents an integer of 1 to 5.
- B 1 is -L 3 - (CH 2) m3 -, - L 3 - (CH 2) m3 -L 4 - (CH 2) m4 - or a single bond
- the L 3 is an amide bond or a single bond
- L 4 is an ether bond, an amide bond or a urethane bond, an integer of 1-5 m3 and m4 independently.
- a specific synthesis example of A 1 and B 1 of formula (1) and a heterobifunctional monodisperse polyethylene glycol having A 1 and B 1 in a preferred embodiment of the present invention is shown below. Although described, the present invention is not limited to this.
- a 1 in formula (1) is —NHC (O) — (CH 2 ) m1 — or —NHC (O) — (CH 2 ) m1 —L 2 — ( CH 2 ) m2 ⁇
- L 2 is an ether bond, amide bond or urethane bond
- m1 and m2 are each independently an integer of 1 to 5
- B 1 is — (CH 2 ) m3 — or — (CH 2) m3 -L 4 - (CH 2) m4 - is represented by, L 4 is an ether bond, an amide bond or a urethane bond, m3 and m4 are each independently an integer of 1-5.
- a 1 is represented by —NHC (O) — (CH 2 ) m1 —, m1 is an integer of 1 to 5, and B 1 is — (CH 2 ) m3 — or — (CH 2 ) m3 —O— (CH 2 ) m4 —, wherein m3 and m4 are each independently an integer of 1 to 5.
- Typical examples of synthesizing the heterobifunctional monodisperse polyethylene glycol include the following steps.
- a compound in which a maleimide group and a p-nitrophenyl carbonate group are introduced as functional groups will be exemplified.
- P 1 is an amino-protecting group; and P 2 is a hydroxy-protecting group.
- the compound represented by the formula (3) is subjected to a nucleophilic substitution reaction with an alkyl or aryl sulfonic acid ester of monomethyl monodisperse polyethylene glycol or a halide of monomethyl monodisperse polyethylene glycol in an anhydrous solvent in the presence of a strong base.
- a compound represented by the following formula (4) is obtained.
- the “protecting group” is a component that prevents or blocks the reaction of a specific functional group in a molecule under a certain reaction condition.
- the protecting group will vary depending on the type of functional group being protected, the conditions used and the presence of other functional groups or protecting groups in the molecule. Specific examples of protecting groups can be found in many common books, for example, “Wuts, P. G. M .; Greene, T. W. Protective Groups in Organic Synthesis, 4 th ed .; Wiley-Interscience: New York, 2007 "It is described in.
- the functional group protected with a protecting group can be reprotected by deprotection using a reaction condition suitable for each protecting group, that is, a chemical reaction, thereby regenerating the original functional group.
- a reaction condition suitable for each protecting group that is, a chemical reaction
- the functional group to be protected when the functional group to be protected is an amino group, for example, an acyl-type protective group and a carbamate-type protective group can be mentioned, specifically, a trifluoroacetyl group, 9- Examples include a fluorenylmethyloxycarbonyl group and a 2- (trimethylsilyl) ethyloxycarbonyl group.
- the functional group to be protected when the functional group to be protected is a hydroxy group, examples thereof include a silyl protecting group and an acyl protecting group. Specifically, a t-butyldiphenylsilyl group, a t-butyldimethylsilyl group, a triisopropylsilyl group Acetyl group and pivaloyl group.
- the functional group to be protected is a carboxy group
- examples include an alkyl ester-based protective group and a silyl ester-based protective group, such as a methyl group, a 9-fluorenylmethyl group, and a t-butyldimethylsilyl group.
- a sulfanyl group for example, a thioether-based protective group, a thiocarbonate-based protective group, and a disulfide-based protective group can be mentioned, specifically, S-2,4-dinitrophenyl group, S-9- Examples include fluorenylmethyloxycarbonyl group and St-butyl disulfide group.
- the bifunctional protecting group which can protect the same or different 2 functional group simultaneously.
- the functional group to be protected when the functional group to be protected is two hydroxy groups, for example, a cyclic acetal type protective group and a cyclic silyl type protective group can be mentioned.
- a cyclic acetal type protective group when the functional group to be protected is two hydroxy groups, for example, a cyclic acetal type protective group and a cyclic silyl type protective group can be mentioned.
- a silylene group when the functional group to be protected is an amino group or a hydroxy group, for example, an oxazoline-based protecting group can be mentioned, and specifically, a 2-phenyloxazoline group can
- Typical deprotection conditions for protecting groups are described in the above-mentioned literature, and reaction conditions suitable for each protecting group can be selected.
- the functional group contained in the structure is a functional group that does not inhibit the chemical reaction of other functional groups even if it is not protected by a protective group, it is not necessary to use a protective group.
- the protecting group P 1 of the compound represented by the formula (4) After deprotecting the protecting group P 1 of the compound represented by the formula (4), 6-maleimidohexanoic acid is reacted in the presence of a condensing agent to obtain a compound represented by the following formula (5).
- the protecting group P 2 may be deprotected simultaneously with the protecting group P 1 .
- a 1 in the formula (1) is represented by —CH 2 — or —CH 2 —L 2 — (CH 2 ) m2 —, and L 2 represents an ether bond.
- Amide bond or urethane bond m2 is an integer of 1 to 5 and B 1 is represented by —CH 2 — or —CH 2 —L 4 — (CH 2 ) m4 —, L 4 is an ether bond, amide Bond or urethane bond, m4 is an integer of 1 to 5.
- a 1 is represented by —CH 2 —NHC (O) — (CH 2 ) m2 —, m2 is an integer of 1 to 5, and B 1 is —CH 2 — or —CH 2 —O. -(CH 2 ) m4- , where m4 is an integer of 1 to 5.
- Typical examples of synthesizing the heterobifunctional monodisperse polyethylene glycol include the following steps.
- a compound in which an iodoacetamide group and an N-succinimidyl ester group are introduced as functional groups will be exemplified.
- P 3 is an amino-protecting group; and P 4 is a hydroxy-protecting group.
- the compound represented by the formula (7) is subjected to a nucleophilic substitution reaction with an alkyl or aryl sulfonate of monomethyl monodisperse polyethylene glycol or a halide of monomethyl monodisperse polyethylene glycol in an anhydrous solvent in the presence of a strong base.
- a compound represented by the following formula (8) is obtained.
- P 5 is a protecting group for a carboxy group.
- N-hydroxysuccinimide is reacted in the presence of a condensing agent to obtain a compound represented by the following formula (11).
- a 1 in formula (1) is —O— (CH 2 ) m1 — or —O— (CH 2 ) m1 —L 2 — (CH 2 ) m2 - it is represented by, L 2 is an integer of ether bond, amide bond or urethane bond, m1 and m2 are independently 1-5, and B 1 is -CH 2 - or -CH 2 -L 4 - (CH 2 ) m4 —, L 4 is an ether bond, amide bond or urethane bond, and m4 is an integer of 1 to 5.
- a 1 is represented by —O— (CH 2 ) m1 —NHC (O) — (CH 2 ) m2 —, wherein m1 and m2 are each independently an integer of 1 to 5 and B 1 Is represented by —CH 2 — or —CH 2 —O— (CH 2 ) m4 —, and m4 is an integer of 1 to 5.
- Typical examples of synthesizing the heterobifunctional monodisperse polyethylene glycol include the following steps.
- a compound in which a 2-pyridyldithio group and an N-succinimidyl carbonate group are introduced as functional groups will be exemplified.
- the compound represented by the formula (12) is subjected to a nucleophilic substitution reaction with an alkyl or aryl sulfonic acid ester of monomethyl monodisperse polyethylene glycol or a halide of monomethyl monodisperse polyethylene glycol in an anhydrous solvent in the presence of a strong base.
- a compound represented by the following formula (13) is obtained.
- a 1 of formula (1) is —C (O) NH— (CH 2 ) m1 — or —C (O) NH— (CH 2 ) m1 — L 2 — (CH 2 ) m2 —, L 2 is an ether bond, amide bond or urethane bond, m1 and m2 are each independently an integer of 1 to 5, and B 1 is —CH 2 — or -CH 2 -L 4 - (CH 2 ) m4 - is represented by, L 4 is an ether bond, an amide bond or a urethane bond, m4 is an integer of 1-5.
- a 1 is represented by —C (O) NH— (CH 2 ) m1 —, m1 is an integer of 1 to 5, and B 1 is —CH 2 — or —CH 2 —O— ( CH 2 ) m4 ⁇ , where m4 is an integer of 1 to 5.
- Typical examples of synthesizing the heterobifunctional monodisperse polyethylene glycol include the following steps.
- a compound in which an azide group and a p-nitrophenyl carbonate group are introduced as functional groups will be exemplified.
- P 8 is a protecting group for a carboxy group
- P 9 is a protecting group for a hydroxy group.
- the compound represented by the formula (16) is subjected to a nucleophilic substitution reaction with an alkyl or aryl sulfonic acid ester of monomethyl monodisperse polyethylene glycol or a halide of monomethyl monodisperse polyethylene glycol in an anhydrous solvent in the presence of a strong base.
- a compound represented by the following formula (17) is obtained.
- the protecting group P 8 of the compound represented by the formula (17) is deprotected, and then reacted with 3-azidopropylamine in the presence of a condensing agent to obtain a compound represented by the following formula (18).
- a 1 of formula (1) is —C (O) NH— (CH 2 ) m1 — or —C (O) NH— (CH 2 ) m1 -L 2- (CH 2 ) m2- , L 2 is an ether bond, amide bond or urethane bond, m1 and m2 are each independently an integer of 1 to 5, and B 1 is -C (O ) NH- (CH 2) m3 - or -C (O) NH- (CH 2 ) m3 -L 4 - (CH 2) m4 - is represented by, L 4 is an ether bond, an amide bond or a urethane bond, m3 and m4 is an integer of 1 to 5.
- a 1 is represented by —C (O) NH— (CH 2 ) m1 —, m1 is an integer of 1 to 5, and B 1 is —C (O) NH— (CH 2 ) m3 -NHC (O)-(CH 2 ) m4- , where m3 and m4 are integers of 1 to 5.
- Typical examples of synthesizing the heterobifunctional monodisperse polyethylene glycol include the following steps.
- a compound into which a dibenzocyclooctyne (DBCO) group and a maleimide group are introduced as functional groups will be exemplified.
- P 10 is a protecting group for a carboxy group; and P 11 is a protecting group for an amino group.
- the compound represented by the formula (20) is subjected to a nucleophilic substitution reaction with an alkyl or aryl sulfonate of monomethyl monodisperse polyethylene glycol or a halide of monomethyl monodisperse polyethylene glycol in an anhydrous solvent in the presence of a strong base.
- a compound represented by the following formula (21) is obtained.
- an antibody-drug conjugate comprising heterobifunctional monodisperse polyethylene glycol represented by formula (2).
- R 1 in the formula (2) of the present invention is a hydrocarbon group or a hydrogen atom, and the hydrocarbon group preferably has 7 or less carbon atoms.
- Specific hydrocarbon groups include a methyl group, an ethyl group, a propyl group, and an isopropyl group. Group, t-butyl group, phenyl group and benzyl group.
- a preferred embodiment of R 1 is a methyl group or a hydrogen atom, and more preferably a methyl group.
- N in the formula (2) of the present invention is an integer of 3 to 72 representing the number of repeating units of monodispersed polyethylene glycol, preferably an integer of 4 to 48, more preferably an integer of 6 to 36, Particularly preferred is an integer of 8 to 24.
- one of X 2 and Y 2 in the formula (2) is an antibody, and the other is a drug.
- ⁇ antibody '' is used in its broadest sense and specifically includes monoclonal antibodies, polyclonal antibodies, dimers, multimers, multispecific antibodies (e.g., bispecific antibodies), And antibody fragments as long as they exhibit the desired biological activity (Miller, K. et al. J. Immunol. 2003, 170, 4854-4861).
- the antibody can be derived from a murine antibody, a human antibody, a humanized antibody, a chimeric antibody, or other species.
- Antibodies are proteins produced by the immune system that can recognize and bind to specific antigens (Janeway, C .; Travers, P .; Walport, M .; Shlomchik, M. Immunobiology, 5 th ed .; Garland Publishing: New York, 2001).
- a target antigen generally has multiple binding sites (also called epitopes) that are recognized by CDRs on multiple antibodies.
- Antibodies that specifically bind to different epitopes have different structures. Thus, an antigen can have more than one corresponding antibody.
- An antibody includes a full-length immunoglobulin molecule, or an immunologically active portion of a full-length immunoglobulin molecule (ie, a molecule comprising an antigen binding site that immunospecifically binds to an antigen of interest or portion thereof).
- targets include, but are not limited to, cancer cells or cells that produce autoimmune antibodies associated with autoimmune diseases.
- the immunoglobulins disclosed herein can be any type (e.g., IgG, IgE, IgM, IgD, and IgA), class (e.g., IgG1, IgG2, IgG3, IgG4, IgA1, and IgA2) or subclass of immunity. It can be a globulin molecule.
- the immunoglobulin can be derived from any species. However, in one embodiment, the immunoglobulin is of human origin, mouse origin, or rabbit origin.
- Polyclonal antibodies are heterogeneous populations of antibody molecules, such as those derived from the sera of immunized animals.
- Various procedures known in the art may be used to generate polyclonal antibodies against the antigen of interest.
- a subject antigen or derivative thereof may be injected to immunize a variety of host animals including but not limited to rabbits, mice, rats and guinea pigs.
- Freund's (complete and incomplete) adjuvants mineral gels such as aluminum hydroxide, surface active substances such as lysolecithin, pluronic polyols, polyanions, peptides, oil emulsions, keyhole limpets
- Various adjuvants may be used to increase the immune response, including but not limited to hemocyanin, dinitrophenol, and potentially useful human adjuvants such as BCG (bacilli Calmett-Guerin) and Corynebacterium u parvum.
- BCG Bacilli Calmett-Guerin
- Corynebacterium u parvum Such adjuvants are also known in the art.
- Monoclonal antibodies are antibodies that are homogenous to specific antigenic determinants (e.g., cellular antigens (cancer or autoimmune cell antigens), viral antigens, microbial antigens, proteins, peptides, carbohydrates, chemicals, nucleic acids or antigen-binding fragments thereof). It is a group. Monoclonal antibodies (mAbs) against the antigen of interest may be prepared using any technique known in the art. These include the hybridoma technique first described by Kohler, G; Milstein, C. Nature 1975, 256, 495-497, and the human B cell hybridoma technique (Kozbor, D. et al. Immunol.
- Such antibodies may be any immunoglobulin type including IgG, IgM, IgE, IgA and IgD and any sub-species thereof.
- the hybridoma producing a monoclonal antibody in the present invention may be cultured in vitro or in vivo.
- Monoclonal antibodies include, but are not limited to, human monoclonal antibodies, humanized monoclonal antibodies, chimeric monoclonal antibodies and antibody fragments.
- Human monoclonal antibodies may be any of a number of techniques known in the art (eg, Teng, N. N. et al. Proc. Natl. Acad. Sci. USA. 1983, 80, 7308-7312, Kozbor , D. et al. Immunology Today 1983, 4, 72-79, Olsson, L. et al. Meth. Enzymol. 1982, 92, 3-16, and US Patent Nos. 5939598 and 5770429 (See).
- Recombinant antibodies such as chimeric monoclonal antibodies and humanized monoclonal antibodies can be made using standard recombinant DNA techniques known in the art (see, e.g., U.S. Pat. Nos. 4,816,567, 4,83,697). ).
- Antibody resurfacing can also reduce the immunogenicity of the antibody (U.S. Pat.No. 5,225,539, European Patent No. 0239400, No. 0519596, No. 0592106). (See the book).
- the antibody may be a bispecific antibody.
- Methods for making bispecific antibodies are known in the art. Conventional methods for producing full-length bispecific antibodies utilize the simultaneous expression of two immunoglobulin heavy chain-light chain pairs when the two chains have different specificities (Milstein, C et al. (See Nature 1983, 305, 537-539).
- a bispecific antibody can also be produced by fusing an antibody variable domain having a desired binding specificity (antibody-antigen binding site) with an immunoglobulin invariant domain sequence.
- SCA single chain antibodies
- known antibodies for the treatment or prevention of cancer may be used. All target proteins can be targeted for antibodies, including any target protein whose expression correlates with expression on cancer, cell proliferation disorder or tumor cells.
- the antibody is useful for the treatment of cancer.
- antibodies that can be used to treat cancer include Rituxan® (Genentech), a chimeric anti-CD20 monoclonal antibody for the treatment of patients with non-Hodgkin lymphoma, and a mouse antibody for the treatment of ovarian cancer.
- Ovalex (Altarex), mouse IgG2a antibody Panorex (Glaxowelcom) for the treatment of colorectal cancer, anti-EGFR for the treatment of epidermal growth factor positive cancers such as head and cervical cancer Cetuximab Erbitux (Immclone Systems), an IgG chimeric antibody, Vitaxin (Med Immun), a humanized antibody for the treatment of sarcomas, and a humanized IgG1 antibody for the treatment of chronic lymphocyte leukemia (CLL)
- CLL chronic lymphocyte leukemia
- a campus I / H (Leukosite), Smart M195 (protein), a humanized anti-CD33 IgG antibody for the treatment of acute myeloid leukemia (AML) Lyneside (Immunomedix), a humanized anti-CD22 IgG antibody for the treatment of non-Hodgkin lymphoma, Smart ID10 (protein), a humanized anti-HLA-DR antibody for the treatment of non-Hodgkin lymph
- the antibody is an antibody against the following antigens.
- Some specific useful antibodies are BR96 mAb (Trail, PA et al. Science 1993, 261, 212-215), BR64 (Trail, PA et al. Cancer Research 1997, 57, 100-105), S2C6 mAbs against CD40 antigens such as mAbs (Francisco, JA et al. Cancer Res. 2000, 60, 3225-3231), or disclosed in U.S. Patent Publication Nos. 2003/0211100 and 2002/0142358.
- Other anti-CD40 antibodies such as, mAbs against CD70 antigens such as 1F6 mAb and 2F2 mAb, and AC10 (Bowen, MA et al. J. Immunol.
- the drugs that can be used in the present invention include chemotherapeutic drugs.
- Chemotherapeutic drugs are useful compounds in the treatment of cancer.
- chemotherapeutic agents include: alkylating agents such as thiotepa and cyclophosphamide (CYTOXAN TM); alkyl sulfonates such as busulfan, improsulfan And piposulfan; aziridines, such as benzodopa, carboquone, meturedopa, and uredopa; ethyleneimines and methylamelamines, altretamine ), Triethylenemelamine, trietylenephosphoramide, triethylenethiophosphaoramide and trimethylolomelamine; acetogenins (especially blatatacin) and Blatatacinone Camptothecin (including topotecan, a synthetic analog); bryostatin; callystatin; CC-1065 (adzelesin, carzelesin and bizelesin
- dynemicin includes dynemicin, dynemycin A; esperamicin; Neocarzinostatin chromophore (neocarzinostatin chro mophore) and related chromoprotein enycein antibiotic chromomophores), aclacinomysins, actinomycin, authramycin, azaserine, bleomycins, cactomycin, Carabicin, carminomycin, carzinophilin; chromomycins, dactinomycin, daunorubicin, detorubicin, 6-diazo-5-oxo- L-norleucine, doxorubicin (including morpholino-doxorubicin, cyanomorpholino-doxorubicin, 2-pyrrolino-doxorubicin and deoxyxorubicin), epirubicin, esorubicin, idarubicin, marc
- antihormonal agents that act to modulate or inhibit the action of hormones on the tumor, such as: tamoxifen, raloxifene, 4 (5) -imidazoles that inhibit aromatase, 4 Antiestrogens, including hydroxytamoxifen, trioxifene, keoxifene, LY117018, onapristone, and toremifene (Fareston); and antiandrogens such as flutamide ), Nilutamide, bicalutamide, leuprolide, and goserelin; siRNA and pharmaceutically acceptable salts, acids or derivatives of any of the above.
- Other chemotherapeutic agents that can be used with the present invention are disclosed in US Patent Application Publication No. 2008/0171040 or US Patent Application Publication No. 2008/0305044, which are hereby incorporated by reference.
- the chemotherapeutic agent is a small molecule drug.
- the small molecule drug preferably has a molecular weight of 100-1500, more preferably 120-1200, even more preferably 200-1000. Widely used to refer to organic, inorganic, or organometallic compounds that typically have a molecular weight of less than about 1000.
- the small molecule drugs of the present invention also include oligopeptides and other biomolecules having a molecular weight of less than about 1000. Small molecule drugs are well characterized in the art, for example, inter alia in WO 05/058367, EP 85901495 and 8590319, and in US Pat. No. 4,956,303. They are used as they are.
- the preferred low molecular weight drug of the present invention is a low molecular weight drug that can be linked to an antibody.
- the present invention includes known drugs and drugs that may become known. Particularly preferred low molecular weight drugs include cytotoxic drugs.
- Preferred cytotoxic drugs are maytansinoids, CC-1065 analogs, morpholinos, doxorubicins, taxanes, cryptophycins, epothilones, calicheamicins ), Auristatins, and pyrrolobenzodiazepine dimers.
- An antibody-drug complex comprising a heterobifunctional monodisperse polyethylene glycol represented by the formula (2) of the present invention is obtained by using a heterobifunctional monodisperse polyethylene glycol represented by the formula (1). It can be prepared by combining drugs.
- the method for preparing the antibody-drug complex represented by the formula (2) may be prepared by linking the heterobifunctional monodisperse polyethylene glycol represented by the formula (1) and the drug and then linking the antibody.
- the compound may be prepared by combining a heterobifunctional monodisperse polyethylene glycol represented by the above formula (1) and an antibody and then binding a drug. Further, the purification may be performed after binding either one of the antibody or the drug, or the purification may be performed after binding both the antibody and the drug.
- the compound in which the heterobifunctional monodisperse polyethylene glycol represented by the formula (1) and a drug are combined is used for purification means such as column chromatography, extraction, recrystallization, adsorbent treatment, reprecipitation, supercritical extraction, etc. And can be purified.
- a compound in which a heterobifunctional monodisperse polyethylene glycol represented by the above formula (1) and an antibody are combined and an antibody-drug complex in which both an antibody and a drug are combined include, for example, column chromatography, extraction and adsorption. It can be purified by purification means such as agent treatment.
- the number of drugs bound to the antibody via the heterobifunctional monodisperse polyethylene glycol represented by the formula (1) of the present invention is defined by the average number of drugs per antibody.
- the number of preferable drugs is 1 to 20, more preferably 2 to 16, further preferably 3 to 12, and particularly preferably 4 to 8.
- the number of drugs per antibody in the ADC can be determined by methods known to those skilled in the art, such as ultraviolet / visible spectroscopy, mass spectrometry, ELISA, electrophoresis, HPLC, and combinations thereof.
- a 2 in the formula (2) of the present invention is a divalent spacer between the quaternary carbon atom and X 2 of the branching portion
- B 2 in the formula (2) has a quaternary carbon atom of the branch portion
- a 2 represents -L 1- (CH 2 ) m1 -L 5- , -L 1- (CH 2 ) m1 -L 2- (CH 2 ) m2 -L 5 -or a single bond
- L 1 represents an ether bond, an amide bond, a urethane bond, a secondary amino group or a single bond
- L 2 represents an ether bond, an amide bond or a urethane bond
- m1 and m2 each independently represents an integer of 1 to 5
- L 5 is an atomic group formed by a reaction between a functional group contained in X 1 of the heterobifunctional monodisperse polyethylene glycol represented by the formula (1) and a functional group present in the antibody or drug.
- B 2 is -L 3 - (CH 2) m3 -L 6 -, - L 3 - (CH 2) m3 -L 4 - (CH 2) m4 -L 6 - or a single bond
- L 3 is an amide bond or a single bond
- L 4 is an ether bond, an amide bond or a urethane bond, an integer of 1-5 m3 and m4 independently.
- L 6 is an atomic group formed by a reaction between a functional group contained in Y 1 of the heterobifunctional monodispersed polyethylene glycol represented by the formula (1) and a functional group present in the antibody or drug.
- JNM-ECP400 or JNM-ECA600 manufactured by JEOL Datum was used.
- a ⁇ 5 mm tube was used for the measurement, and when the deuterated solvent was CDCl 3 or CD 3 OD, tetramethylsilane (TMS) was used as an internal standard substance.
- TMS tetramethylsilane
- Example 1 Trishydroxymethylaminomethane (30.3 g, 250 mmol), sodium carbonate (5.30 g, 50 mmol), dehydrated methanol (3. 237 g) and benzonitrile (5.15 g, 50 mmol) were added, and the reaction was performed at 65 ° C. for 24 hours. After filtration, the solvent was distilled off under reduced pressure, isopropyl alcohol and dichloromethane were added and dissolved, and the mixture was washed with 10 wt% brine. The organic layer was dried over anhydrous sodium sulfate and filtered, and then the solvent was distilled off under reduced pressure.
- Example 2 Dodecaethylene glycol monomethyl ether (10.4 g, 18.5 mmol), toluene (52.0 g), triethylamine (2.44 g) in a 100 mL three-necked flask equipped with a thermometer, nitrogen blowing tube, stir bar, Dean-stark tube and condenser tube , 24.1 mmol) and methanesulfonyl chloride (2.34 g, 20.4 mmol) were added, and the reaction was carried out at 40 ° C. for 3 hours. Dichloromethane was added for dilution, followed by washing with water, and the organic layer was dried over anhydrous magnesium sulfate.
- Example 3 In a 50 mL three-necked flask equipped with a thermometer, nitrogen blowing tube, stirrer, Dean-stark tube and condenser tube, the compound of formula (24) (0.21 g, 1.01 mmol), dehydrated THF (7.70 g), formula ( 25) compound (2.46 g, 3.84 mmol) and 1M t-butoxypotassium THF solution (3.72 g, 4.04 mmol) were charged and reacted at 50 ° C. for 4 hours. Dichloromethane and 25 wt% brine were added to perform washing with water, and the organic layer was dried over anhydrous sodium sulfate.
- Example 4 Dissolve the compound of formula (26) (1.13g, 0.877mmol) and distilled water (31.1g) in a 100mL three-necked flask equipped with a thermometer, nitrogen blowing tube, stir bar, Dean-stark tube and condenser. I let you. 85% phosphoric acid (0.43 ml) was added to adjust the pH to 1.5, and the reaction was carried out at 50 ° C. for 3 hours. Next, 400 g / L aqueous sodium hydroxide solution (5.58 ml) was added while cooling, and the reaction was carried out at 50 ° C. for 6 hours.
- Example 5 A 50 mL three-necked flask equipped with a thermometer, nitrogen blowing tube, stir bar, Dean-stark tube and condenser tube was charged with the compound of formula (27) (0.800 g, 0.663 mmol), 6-maleimidohexanoic acid (0.161 g, 0.762 mmol), DMT-MM (0.263 g, 0.762 mmol), acetonitrile (8.00 g), triethylamine (0.081 g, 0.796 mmol) were charged, and the reaction was carried out at 25 ° C. for 7 hours. After adding pH 3.0 citrate buffer (9.60 g), washing was performed using toluene.
- pH 3.0 citrate buffer (9.60 g
- Example 6 In a 4 ml screw tube containing a stir bar, the compound of formula (28) (0.050 g, 0.036 mmol), N-methylmorpholine (0.036 g, 0.357 mmol), carbonic acid (4-bisnitrophenyl) (0.087 g, 0.286 mmol) ) And dehydrated acetonitrile (0.281 g) were added, and the reaction was carried out at 25 ° C. for 10 hours in a nitrogen atmosphere. Distilled water (0.018 g, 1.00 mmol) and N-methylmorpholine (0.022 g, 0.214 mmol) were added, and the mixture was stirred at 25 ° C. for 6 hours, and then diluted with dichloromethane.
- Example 7 To a 4 ml screw tube containing a stir bar, doxorubicin hydrochloride (4.08 mg, 7.03 ⁇ mol), N, N-diisopropylamine (1.98 mg, 14.7 ⁇ mol), N, N-dimethylformamide, and a compound of formula (29) (10.0 mg, 6.39 ⁇ mol), and the reaction was performed for 4 hours. After diluting with dichloromethane, the mixture was washed with 5 wt% aqueous sodium dihydrogen phosphate dodecahydrate solution and then with ion-exchanged water.
- Example 8 The drug-linker compound of formula (30) obtained in Example 7 was subjected to HPLC measurement using a hydrophobic interaction chromatography (HIC) column under the following measurement conditions.
- the measurement result chart is shown in FIG. ⁇
- HPLC equipment Alliance (Waters) ⁇ Column: TSKgel Butyl-NPR (4.6 ⁇ 35mm, 2.5 ⁇ m; Tosoh Corporation) ⁇ Flow rate: 0.8mL / min ⁇ Analysis time: 45 minutes ⁇ Column temperature: 25 °C ⁇ Injection volume: 100 ⁇ L ⁇ Detector: Photodiode array (measurement wavelength: 200-600nm)
- Mobile phase A 50 mM sodium phosphate buffer (pH 7.0) containing 1.5 M ammonium sulfate -Mobile phase B: Mixed solution containing 80% 50 mM sodium phosphate buffer (pH 7.0) and 20% isopropyl alcohol-Gradient program: 0% -0% (0 min-2.5 min), 0% -100% (2.5 min-35 min
- Example 9 Monoclonal anti-interleukin-1 ⁇ antibody (0.500 mg, Sigma-Aldrich) produced in mice was dissolved in phosphate buffered saline (PBS, 0.500 mL). 0.048 mL of this solution was placed in a 0.5 mL polypropylene tube where 50.0 mM ethylenediaminetetraacetic acid (EDTA, 0.006 mL), 0.800 mM tris (2-carboxymethyl) phosphine hydrochloride (TCEP) aqueous solution (0.006 mL; 15 equivalents to antibody) was added and the mixture was shaken at 37 ° C. for 1 hour.
- PBS phosphate buffered saline
- the average number of bonds per antibody in the antibody-drug complex can be calculated by measuring the UV absorbance at two wavelengths of 280 nm and 495 nm of the antibody-drug complex aqueous solution and then performing the following calculation. Since the total absorbance at a certain wavelength is equal to the sum of the absorbances of all the absorbing chemical species present in the system [addition of absorbance], the molar extinction coefficient of the antibody and drug is measured before and after the antibody-drug complexation reaction. Assuming that there is no change, the antibody concentration and drug concentration in the antibody-drug complex are expressed by the following relational expression.
- a 280 represents the absorbance of the antibody-drug complex aqueous solution at 280 nm
- a 495 represents the absorbance of the antibody-drug complex aqueous solution at 495 nm
- a A, 280 represents the absorbance of the antibody at 280 nm
- a A , 495 represents the absorbance of the antibody at 495 nm
- AD, 280 represents the absorbance of the drug-linker compound at 280 nm
- AD, 495 represents the absorbance of the drug-linker compound at 495 nm
- ⁇ A, 280 represents the absorbance at 280 nm.
- ⁇ A, 495 indicates the molar extinction coefficient of the antibody at 495 nm
- ⁇ D, 280 indicates the molar extinction coefficient of the drug-linker compound at 280 nm
- ⁇ D, 495 indicates the drug- shows the molar extinction coefficient of the linker compound
- C a antibody - indicates antibody concentration in drug conjugates
- C D antibody - shows the drug concentration in the drug conjugate.
- C A and C D can be obtained by measuring A 280 and A 495 of the antibody-drug complex aqueous solution and substituting these values into equations (i) and (ii) to solve the simultaneous equations.
- C D can be drug average binding per antibody determined by the dividing in C A.
- Example 11 The drug-linker compound of formula (30) obtained in Example 7 was subjected to HPLC measurement using a hydrophobic interaction chromatography (HIC) column under the following measurement conditions. A chart of results at a measurement wavelength of 495 nm is shown in FIG.
- HIC hydrophobic interaction chromatography
- Tetraethylene glycol monomethyl ether 23.0 g, 110 mmol
- toluene 115 g
- triethylamine 14.5 g, 143 mmol
- methanesulfonyl chloride 13.9 g, 121 mmol
- Dichloromethane was added for dilution, followed by washing with water, and the organic layer was dried over anhydrous magnesium sulfate.
- Example 13 In a 500 mL four-necked flask equipped with a thermometer, nitrogen blowing tube, stirrer, Dean-stark tube and condenser tube, compound of formula (24) (5.00 g, 24.1 mmol), dehydrated THF (138 g), formula (31 ) Compound (16.6 g, 57.9 mmol) and 1M t-butoxypotassium THF solution (52.6 g, 33.7 mmol) were added and reacted at 50 ° C. for 4 hours. Dichloromethane and 25 wt% brine were added to perform washing with water, and the organic layer was dried over anhydrous sodium sulfate.
- compound of formula (24) 5.00 g, 24.1 mmol
- dehydrated THF 138 g
- formula (31 ) Compound (16.6 g, 57.9 mmol) and 1M t-butoxypotassium THF solution (52.6 g, 33.7 mmol) were added and reacted at 50 ° C
- Example 14 Add the compound of formula (32) (12.0 g, 20.4 mmol) and distilled water (168 g) to a 500 mL four-necked flask equipped with a thermometer, nitrogen blowing tube, stirrer, Dean-stark tube and condenser tube and dissolve. It was. 85% phosphoric acid (6.3 ml) was added to adjust the pH to 1.5, and the reaction was carried out at 50 ° C. for 2 hours. Next, 400 g / L aqueous sodium hydroxide solution (72.9 ml) was added while cooling, and then the reaction was carried out at 50 ° C. for 5 hours.
- Example 15 A 100 mL three-necked flask equipped with a thermometer, a nitrogen blowing tube, a stirrer, a Dean-stark tube and a condenser tube was charged with the compound of formula (33) (3.00 g, 5.98 mmol), 6-maleimidohexanoic acid (1.45 g, 6.88 mmol), DMT-MM (1.90 g, 6.88 mmol), acetonitrile (30.0 g), triethylamine (0.726 g, 7.18 mmol) were charged, and the reaction was performed at 25 ° C. for 5 hours. After adding pH 3.0 citrate buffer (36.0 g), washing was performed using toluene.
- Comparative Example 7 The drug-linker compound of formula (41) obtained in Comparative Example 6 was subjected to HPLC measurement using a hydrophobic interaction chromatography (HIC) column under the same measurement conditions as in Example 8. A chart of the measurement results is shown in FIG.
- Comparative Example 16 The drug-linker compound of the formula (41) obtained in Comparative Example 6 was subjected to HPLC measurement using a hydrophobic interaction chromatography (HIC) column under the same measurement conditions as in Example 11. A chart of the results at a measurement wavelength of 495 nm is shown in FIG.
- Comparative Example 17 The drug-linker compound of the formula (47) obtained in Comparative Example 15 was subjected to HPLC measurement using a hydrophobic interaction chromatography (HIC) column under the same measurement conditions as in Example 11. A chart of results at a measurement wavelength of 495 nm is shown in FIG.
- the drug-linker compound of the formula (30) was detected at a retention time of 14.2 minutes in the chart of FIG.
- the drug-linker compound of the formula (41) was detected at a retention time of 15.3 minutes in the chart of FIG. Therefore, since the former drug-linker compound having a shorter retention time has lower hydrophobicity, it was shown that the heterobifunctional monodisperse polyethylene glycol of the present invention can effectively shield the hydrophobicity of the drug.
- the drug-linker compound of the formula (30) according to the present invention was detected at a retention time of 13.2 minutes in the chart of FIG. Therefore, since the drug-linker compound of the formula (30) having a shorter retention time has lower hydrophobicity, it is shown that the heterobifunctional monodisperse polyethylene glycol of the present invention can effectively shield the hydrophobicity of the drug. It was done.
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Abstract
Description
[1] 式(1)で示される、ヘテロ二官能性単分散ポリエチレングリコール。
X1およびY1はそれぞれ生体機能性分子に存在する官能基と反応して共有結合を形成する官能基を少なくとも含む原子団であり、原子団X1が含む前記官能基と原子団Y1が含む前記官能基とは互いに異なる;
R1は炭素数1~7の炭化水素基または水素原子であり;
nは3~72の整数であり;
A1は-L1-(CH2)m1-、-L1-(CH2)m1-L2-(CH2)m2-または単結合を表し、L1はエーテル結合、アミド結合、ウレタン結合、2級アミノ基または単結合か表し、L2はエーテル結合、アミド結合またはウレタン結合を表し、m1およびm2はそれぞれ独立して1~5の整数を表し;および
B1は-L3-(CH2)m3-、-L3-(CH2)m3-L4-(CH2)m4-または単結合を表し、L3はアミド結合または単結合を表し、L4はエーテル結合、アミド結合またはウレタン結合を表し、m3およびm4はそれぞれ独立して1~5の整数を表す。)
式(e)中、R3は塩素原子、臭素原子およびヨウ素原子から選択されるハロゲン原子であり;および
式(l)中、R4は水素原子または炭素数1~5の炭化水素基である。)
X2およびY2との一方が抗体であり、他方が薬物であり;
R1は炭素数1~7の炭化水素基または水素原子であり;
nは3~72の整数であり;
A2は、-L1-(CH2)m1-L5-、-L1-(CH2)m1-L2-(CH2)m2-L5-または単結合を表し、L1はエーテル結合、アミド結合、ウレタン結合、2級アミノ基または単結合を表し、L2はエーテル結合、アミド結合またはウレタン結合を表し、m1およびm2はそれぞれ独立して1~5の整数を表し、L5はアミド結合、ウレタン結合、チオエーテル結合、ジスルフィド結合、カーボネート結合、エステル結合、エーテル結合、1H-1,2,3-トリアゾール-1,4-ジイル構造、2級アミノ基、ヒドラジド基、オキシアミド基もしくはこれらを含む炭化水素基であり;および
B2は-L3-(CH2)m3-L6-、-L3-(CH2)m3-L4-(CH2)m4-L6-または単結合を表し、L3はアミド結合または単結合を表し、L4はエーテル結合、アミド結合またはウレタン結合を表し、m3およびm4はそれぞれ独立して1~5の整数を表し、L6はアミド結合、ウレタン結合、チオエーテル結合、ジスルフィド結合、カーボネート結合、エステル結合、エーテル結合、1H-1,2,3-トリアゾール-1,4-ジイル構造、2級アミノ基、ヒドラジド基、オキシアミド基もしくはこれらを含む炭化水素基である。)
本明細書における「ヘテロ二官能性」とは、二つの異なる化学反応可能な官能基を有することを意味し、「単分散ポリエチレングリコール」とは、特定のエチレングリコール鎖長を有する成分が90%以上含まれる化合物のことである。また、「キラル中心を有さない」とは、鏡像と重ね合わせることが可能であることを意味する。
群(I):生体機能性分子のアミノ基と反応して共有結合を形成することが可能な官能基
下記の(a)、(b1)、(b2)、(c)、(d)、(e)および(f)
群(II):生体機能性分子のチオール基と反応して共有結合を形成することが可能な官能基
下記の(a)、(b1)、(b2)、(c)、(d)、(e)、(f)、(g)、(h)および(l)
群(III):生体機能性分子のアルデヒド基またはカルボキシ基と反応して共有結合を形成することが可能な官能基
下記の(g)、(i)、(j)、(k)および(o)
群(IV):生体機能性分子のアルキニル基と反応して共有結合を形成することが可能な官能基
下記の(g)、(i)、(j)、(k)および(n)
群(V):生体機能性分子のアジド基と反応して共有結合を形成することが可能な官能基
下記の(l)および(m)
群(VI):生体機能性分子のハロゲン化アルキル基、アルキルスルホン酸エステルまたはアリールスルホン酸エステルと反応して共有結合を形成することが可能な官能基
下記の(g)、(i)および(o)
標的抗原は、一般的には、複数の抗体上にあるCDRによって認識される多数の結合部位(エピトープとも呼ばれる)を有する。異なるエピトープに特異的に結合する抗体は、異なる構造を有する。従って、ある1つの抗原は、1つよりも多くの対応する抗体を有し得る。抗体は、全長免疫グロブリン分子、または全長免疫グロブリン分子の免疫学的に活性な部分(すなわち、対象とする抗原もしくはその部分に免疫特異的に結合する抗原結合部位を含む分子)を包含する。そのような標的としては、ガン細胞、または自己免疫疾患に関連する自己免疫抗体を生成する細胞が挙げられるが、これらに限定はされない。本明細書において開示される免疫グロブリンは、任意の型(例えば、IgG、IgE、IgM、IgD、およびIgA)、クラス(例えば、IgG1、IgG2、IgG3、IgG4、IgA1、及びIgA2)またはサブクラスの免疫グロブリン分子であり得る。上記免疫グロブリンは、任意の種に由来し得る。しかし、一態様において、上記免疫グロブリンは、ヒト起源、マウス起源、またはウサギ起源である。
いくつかの特異的な有用な抗体は、BR96 mAb(Trail, P. A. et al. Science 1993, 261, 212-215)、BR64(Trail, P. A. et al. Cancer Research 1997, 57, 100-105)、S2C6 mAb(Francisco, J. A. et al. Cancer Res. 2000, 60, 3225-3231)などのCD40抗原に対するmAb、または米国特許出願公開第2003/0211100号明細書および第2002/0142358号明細書に開示されているようなその他の抗CD40抗体、1F6 mAbおよび2F2 mAbなどのCD70抗原に対するmAb、およびAC10(Bowen, M. A. et al. J. Immunol. 1993, 151, 5896-5906、Wahl, A. F. et al. Cancer Res. 2002, 62(13), 3736-42)またはMDX-0060(米国特許出願公開第2004/0006215号明細書)などのCD30抗原に対するmAbを含むが、それらに限定されない。
温度計、窒素吹き込み管、攪拌機、Dean-stark管および冷却管を装備した500mLの四つ口フラスコにトリスヒドロキシメチルアミノメタン(30.3g, 250mmol)、炭酸ナトリウム(5.30g, 50mmol)、脱水メタノール(237g)およびベンゾニトリル(5.15g, 50mmol)を仕込み、65℃にて24時間反応を行った。ろ過を行い、溶媒を減圧留去した後、イソプロピルアルコール、ジクロロメタンを加えて溶解し、10wt%食塩水で洗浄した。有機層を無水硫酸ナトリウムで乾燥し、ろ過後、溶媒を減圧留去した。残渣をTHFに溶解し、ヘキサンを加えて結晶化を行い、ろ過することによって式(24)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
3.06(2H, brs, -OH),
3.65-3.81(4H, dd, >C(CH 2OH)2),
4.38(2H, s, -CNO-CH 2 -),
7.32-7.83(5H, m, arom.H)
温度計、窒素吹き込み管、攪拌子、Dean-stark管および冷却管を装備した100mLの三つ口フラスコにドデカエチレングリコールモノメチルエーテル(10.4g, 18.5mmol)、トルエン(52.0g)、トリエチルアミン(2.44g, 24.1mmol)、塩化メタンスルホニル(2.34g, 20.4mmol)を仕込み、40℃にて3時間反応を行った。ジクロロメタンを加えて希釈した後に水洗を行い、有機層を無水硫酸マグネシウムで乾燥した。ろ過後、溶媒を減圧留去し式(25)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
3.08(3H, s, -O-SO2-CH 3 ),
3.38(3H, s, -O-CH 3 ),
3.45-3.85(46H, m, CH3-O-(CH 2 CH 2O)11-CH 2 CH2-O-SO2-CH3),
4.38(2H, m, -CH 2 -O-SO2-CH3)
温度計、窒素吹き込み管、攪拌子、Dean-stark管および冷却管を装備した50mLの三つ口フラスコに式(24)の化合物(0.21g, 1.01mmol)、脱水THF(7.70g)、式(25)の化合物(2.46g, 3.84mmol)、1M t-ブトキシカリウムTHF溶液(3.72g, 4.04mmol)を仕込み、50℃にて4時間反応を行った。ジクロロメタン、25wt%食塩水を加えて水洗を行い、有機層を無水硫酸ナトリウムで乾燥した。ろ過後、溶媒を減圧留去し式(26)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
3.38(6H, s, -O-CH 3 ),
3.40-3.75(100H, m, >C(CH 2O)2-, -O-(CH 2 CH 2O)12-, -CNO-CH 2 -),
4.36(2H, s, -CNO-CH 2 -),
7.37-7.94(5H, m, arom.H)
温度計、窒素吹き込み管、攪拌子、Dean-stark管および冷却管を装備した100mLの三つ口フラスコに式(26)の化合物(1.13g, 0.877mmol)、蒸留水(31.1g)を加え溶解させた。85%リン酸(0.43ml)を加えてpH1.5に調整した後、50℃にて3時間反応を行った。次に冷却しながら400g/L水酸化ナトリウム水溶液(5.58ml)を加えた後、50℃にて6時間反応を行った。続いて、6N塩酸を加えてpH 2.0に調整した後、トルエン、クロロホルムを加えて洗浄を行った。25%食塩水となるように食塩を加えた後、400g/L水酸化ナトリウム水溶液を用いてpH 12.5に調整した。トルエンを用いて抽出を行い、無水硫酸ナトリウムで乾燥した。ろ過後、溶媒を減圧留去し式(27)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
3.08(1H, brs, -OH),
3.38(6H, s, -O-CH 3 ),
3.40-3.80(102H, m, >C(CH 2O)2-, -O-(CH 2 CH 2O)12-, >CNH2-CH 2 -OH)
温度計、窒素吹き込み管、攪拌子、Dean-stark管および冷却管を装備した50mLの三つ口フラスコに式(27)の化合物(0.800g, 0.663mmol)、6-マレイミドヘキサン酸(0.161g, 0.762mmol)、DMT-MM(0.263g, 0.762mmol)、アセトニトリル(8.00g)、トリエチルアミン(0.081g, 0.796mmol)を仕込み、25℃にて7時間反応を行った。pH 3.0クエン酸緩衝液(9.60g)を加えた後、トルエンを用いて洗浄を行った。クロロホルムを用いて抽出を行った後、有機層を10%食塩水で洗浄した。有機層を無水硫酸マグネシウムで乾燥し、ろ過後、溶媒を減圧留去し式(28)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
1.31(2H, m, -CH 2 CH2CH2-CONH-),
1.62(4H, m, -CH 2 CH2CH 2 CH2-CONH-),
2.18(2H, t, -CH 2 -CONH-),
3.38(6H, s, -O-CH 3 ),
3.40-3.85(104H, m, >C(CH 2O)2-, -O-(CH 2 CH 2O)12-, >CNH-CH 2 -OH, -CH 2 -maleimide)
4.62(1H, t, -OH),
6.23(1H, s, -CH2-CONH-),
6.69(2H, s, -maleimide)
撹拌子を入れた4 mlスクリュー管に式(28)の化合物(0.050g, 0.036mmol)、N-メチルモルホリン(0.036g, 0.357mmol)、炭酸(4-ビスニトロフェニル)(0.087g, 0.286mmol)、脱水アセトニトリル(0.281g)を加え、窒素雰囲気、25℃にて10時間反応を行った。蒸留水(0.018g, 1.00mmol)、N-メチルモルホリン(0.022g, 0.214mmol)を加え、25℃にて6時間撹拌した後、ジクロロメタンを用いて希釈した。pH 3.0クエン酸緩衝液を用いて水洗後、さらにpH 10.0ほう酸緩衝液、25%食塩水を用いて水洗を行った。有機層を無水硫酸ナトリウムで乾燥し、ろ過後、溶媒を減圧留去し式(29)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
1.31(2H, m, -CH 2 CH2CH2-CONH-),
1.59(4H, m, -CH 2 CH2CH 2 CH2-CONH-),
2.16(2H, t, -CH 2 -CONH-),
3.38(6H, s, -O-CH 3 ),
3.40-3.85(102H, m, >C(CH 2O)2-, -O-(CH 2 CH 2O)12-, -CH 2 -maleimide)
4.70(1H, s, >CNH-CH 2 -OCOO-),
6.02(1H, s, -CH2-CONH-),
6.69(2H, s, -maleimide),
7.35-8.35(4H, m, arom.H)
撹拌子を入れた4mlスクリュー管にドキソルビシン塩酸塩(4.08mg、 7.03μmol)、N,N-ジイソプロピルアミン(1.98mg、 14.7 μmol)、N,N-ジメチルホルムアミド、および式(29)の化合物(10.0mg、 6.39μmol)を仕込み、4時間反応を行った。ジクロロメタンで希釈後、5wt%リン酸二水素ナトリウム・十二水和物水溶液を用いて水洗後、さらにイオン交換水を用いて水洗した。有機層を無水硫酸ナトリウムで乾燥し、濾過後、溶媒を減圧留去し、式(30)の薬物-リンカー化合物を得た。
1H-NMR(CD3Cl, 内部標準TMS); δ(ppm):
1.23-1.31(5H, m), 1.55-1.65(4H, m), 1.75-1.88(2H, m),
2.08(2H, t), 2.14-2.39(2H, m), 2.88(1H, dd),
3.02(1H, s), 3.18(2H, dd) 3.38(3H, s),
3.41-3.90(110H, m), 4.03-4.06(1H, m), 4.09(3H, s),
4.12-4.14(1H, m), 4.22-4.47(1H, m), 4.65(1H, s),
4.77(2H, d), 5.33(1H, s), 5.42-5.44(1H, m),
5.53(1H, s), 6.16(1H, s), 6.69(2H, s),
7.41(1H, d), 7.80(1H, t), 8.06(1H, d)
実施例7で得た式(30)の薬物-リンカー化合物について、疎水性相互作用クロマトグラフィー(HIC)カラムを用いたHPLC測定を下記の測定条件にて行った。測定結果のチャートを図1に示した。
・HPLC装置:Alliance (Waters)
・カラム:TSKgel Butyl-NPR(4.6×35mm、2.5μm;東ソー株式会社)
・流速:0.8mL/分
・分析時間:45分
・カラム温度:25℃
・注入量:100μL
・検出器:フォトダイオードアレイ(測定波長:200-600nm)
・移動相A:1.5M硫酸アンモニウムを含む、50mMリン酸ナトリウム緩衝液(pH7.0)
・移動相B:50mMリン酸ナトリウム緩衝液(pH7.0)を80%とイソプロピルアルコールを20%含む混合溶液
・グラジエントプログラム:0%-0%(0分-2.5分)、0%-100%(2.5分-35分)、100%-0%(35.1分-45分)
マウスで産生されたモノクローナル抗インターロイキン-1β抗体(0.500mg,Sigma-Aldrich)をリン酸緩衝食塩水(PBS, 0.500mL)に溶解した。この溶液0.048mLを0.5mLのポリプロピレン製チューブに入れ、ここに50.0mMのエチレンジアミン四酢酸(EDTA, 0.006mL)、0.800mMのトリス(2-カルボキシメチル)ホスフィン塩酸塩(TCEP)水溶液(0.006mL;抗体に対して15当量)を加え、混合物を37℃で1時間振とうした。上記溶液へ、N,N-ジメチルアセトアミドと式(30)の化合物を2.50mM含む溶液(0.007mL;抗体に対して53当量)を添加し、混合物を20℃で1時間さらに振とうした。N-アセチルシステインの2.50mM水溶液(0.007mL; 抗体に対して53当量)を添加し、得られた混合物を20℃で1時間さらに振とうした。PBS(10mL)を用いて平衡化したNAP-5カラム(GE Healthcare Life Science)に上記で得られた溶液を充填し、PBSで溶出させることで、抗体画分を分取した。
抗体-薬物複合体における1抗体あたりの平均結合数は、抗体-薬物複合体水溶液の280nm及び495nmの二波長におけるUV吸光度を測定したのちに下記の計算を行うことで、算出することができる。
ある波長における全吸光度は系内に存在する全ての吸収化学種の吸光度の和に等しい[吸光度の加成性]ことから、抗体と薬物の複合化反応前後において、抗体及び薬物のモル吸光係数に変化がないと仮定すると、抗体-薬物複合体における抗体濃度及び薬物濃度は、下記の関係式で示される。
A280=AD,280+AA,280=εD,280CD+εA,280CA 式(i)
A495=AD,495+AA,495=εD,495CD+εA,495CA 式(ii)
ここで、A280は280nmにおける抗体-薬物複合体水溶液の吸光度を示し、A495は495nmにおける抗体-薬物複合体水溶液の吸光度を示し、AA,280は280nmにおける抗体の吸光度を示し、AA,495は495nmにおける抗体の吸光度を示し、AD,280は280nmにおける薬物-リンカー化合物の吸光度を示し、AD,495は495nmにおける薬物-リンカー化合物の吸光度を示し、εA,280は280nmにおける抗体のモル吸光係数を示し、εA,495は495nmにおける抗体のモル吸光係数を示し、εD,280は280nmにおける薬物-リンカー化合物のモル吸光係数を示し、εD,495は495nmにおける薬物-リンカー化合物のモル吸光係数を示し、CAは抗体-薬物複合体における抗体濃度を示し、CDは抗体-薬物複合体における薬物濃度を示す。
ここで、εA,280、εA,495、εD,280、εD,495は、事前に用意した値(推定値もしくは化合物のUV測定から得られた実測値)が用いられる。εA,495は、通常、ゼロである。εD,280及びεD,495は、用いる薬物-リンカー化合物をあるモル濃度に溶解させた溶液の吸光度を測定することで、ランベルト・ベールの法則(吸光度=モル濃度×モル吸光係数×セル光路長)によって、得ることができる。抗体-薬物複合体水溶液のA280及びA495を測定し、これらの値を式(i)及び(ii)に代入して連立方程式を解くことによって、CA及びCDを求めることができる。さらにCDをCAで除することで1抗体あたりの薬物平均結合数が求めることができる。
モル吸光係数εA,280=206,999(推定値)、εA,495=0、εD,280=8067(実測値)、εD,495=8121(実測値)を用いて上記の連立方程式を解き、1抗体あたりの薬物平均結合数は8.4であった。
実施例7で得た式(30)の薬物-リンカー化合物について、疎水性相互作用クロマトグラフィー(HIC)カラムを用いたHPLC測定を下記の測定条件にて行った。測定波長495nmにおける結果のチャートを図3に示した。
・HPLC装置:Allianc (Waters)
・カラム:TSKgel Butyl-NPR(4.6×35mm、2.5μm;東ソー株式会社)
・流速:0.8mL/分
・分析時間:45分
・カラム温度:25℃
・注入量:100μL
・検出器:紫外可視分光高度計(測定波長:495nmおよび280nm)
・移動相A:1.5M硫酸アンモニウムを含む、50mMリン酸ナトリウム緩衝液(pH7.0)
・移動相B:50mMリン酸ナトリウム緩衝液(pH7.0)を80%とイソプロピルアルコールを20%含む混合溶液
・グラジエントプログラム:0%-0%(0分-2.5分)、0%-100%(2.5分-35分)、100%-0%(35.1分-45分)
温度計、窒素吹き込み管、攪拌子、Dean-stark管および冷却管を装備した300mLの四つ口フラスコにテトラエチレングリコールモノメチルエーテル(23.0g, 110mmol)、トルエン(115g)、トリエチルアミン(14.5g, 143mmol)、塩化メタンスルホニル(13.9g, 121mmol)を仕込み、40℃にて2時間反応を行った。ジクロロメタンを加えて希釈した後に水洗を行い、有機層を無水硫酸マグネシウムで乾燥した。ろ過後、溶媒を減圧留去し式(31)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
3.08(3H, s, -O-SO2-CH 3 ),
3.38(3H, s, -O-CH 3 ),
3.45-3.85(14H, m, CH3-O-(CH 2 CH 2O)4-CH 2 CH2-O-SO2-CH3),
4.38(2H, m, -CH 2 -O-SO2-CH3)
温度計、窒素吹き込み管、攪拌子、Dean-stark管および冷却管を装備した500mLの四つ口フラスコに式(24)の化合物(5.00g, 24.1mmol)、脱水THF(138g)、式(31)の化合物(16.6g, 57.9mmol)、1M t-ブトキシカリウムTHF溶液(52.6g, 33.7mmol)を仕込み、50℃にて4時間反応を行った。ジクロロメタン、25wt%食塩水を加えて水洗を行い、有機層を無水硫酸ナトリウムで乾燥した。ろ過後、溶媒を減圧留去し式(32)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
3.38(6H, s, -O-CH 3 ),
3.40-3.75(36H, m, >C(CH 2O)2-, -O-(CH 2 CH 2O)4-, -CNO-CH 2 -),
4.36(2H, s, -CNO-CH 2 -),
7.37-7.94(5H, m, arom.H)
温度計、窒素吹き込み管、攪拌子、Dean-stark管および冷却管を装備した500mLの四つ口フラスコに式(32)の化合物(12.0g, 20.4mmol)、蒸留水(168g)を加え溶解させた。85%リン酸(6.3ml)を加えてpH1.5に調整した後、50℃にて2時間反応を行った。次に冷却しながら400g/L水酸化ナトリウム水溶液(72.9ml)を加えた後、50℃にて5時間反応を行った。続いて、6N塩酸を加えてpH 2.0に調整した後、トルエン、クロロホルムを加えて洗浄を行った。25%食塩水となるように食塩を加えた後、400g/L水酸化ナトリウム水溶液を用いてpH 12.5に調整した。トルエンを用いて抽出を行い、無水硫酸ナトリウムで乾燥した。ろ過後、溶媒を減圧留去し式(33)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
3.08(1H, brs, -OH),
3.38(6H, s, -O-CH 3 ),
3.40-3.80(38H, m, >C(CH 2O)2-, -O-(CH 2 CH 2O)4-, >CNH2-CH 2 -OH)
温度計、窒素吹き込み管、攪拌子、Dean-stark管および冷却管を装備した100mLの三つ口フラスコに式(33)の化合物(3.00g, 5.98mmol)、6-マレイミドヘキサン酸(1.45g, 6.88mmol)、DMT-MM(1.90g, 6.88mmol)、アセトニトリル(30.0g)、トリエチルアミン(0.726g, 7.18mmol)を仕込み、25℃にて5時間反応を行った。pH 3.0クエン酸緩衝液(36.0g)を加えた後、トルエンを用いて洗浄を行った。クロロホルムを用いて抽出を行った後、有機層を10%食塩水で洗浄した。有機層を無水硫酸マグネシウムで乾燥し、ろ過後、溶媒を減圧留去し式(34)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
1.31(2H, m, -CH 2 CH2CH2-CONH-),
1.62(4H, m, -CH 2 CH2CH 2 CH2-CONH-),
2.18(2H, t, -CH 2 -CONH-),
3.38(6H, s, -O-CH 3 ),
3.40-3.85(40H, m, >C(CH 2O)2-, -O-(CH 2 CH 2O)4-, >CNH-CH 2 -OH, -CH 2 -maleimide)
4.64(1H, t, -OH),
6.23(1H, s, -CH2-CONH-),
6.69(2H, s, -maleimide)
温度計、窒素吹き込み管、攪拌子、Dean-stark管および冷却管を装備した50mLの三つ口フラスコに式(34)の化合物(2.50g, 3.60mmol)、N-フェニルモルホリン(1.47g, 9.00mmol)、p-ニトロフェニルクロロホルメート(1.45g, 7.20mmol)、ジクロロメタン(47.7g)を加え、25℃にて2時間反応を行った。蒸留水(0.39g, 21.6 mmol)、N-フェニルモルホリン(1.47g, 9.00mmol)を加え、25℃にて6時間撹拌した後、ヘキサンを用いて希釈した。0.2M塩酸を用いて水洗後、さらにpH 10ほう酸緩衝液、10%食塩水を用いて水洗を行った。有機層を無水硫酸ナトリウムで乾燥し、ろ過後、溶媒を減圧留去し、残渣をアセトニトリルに溶解した。ヘキサン、t-ブタノールを加えて洗浄した後、溶媒を減圧留去して式(35)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
1.31(2H, m, -CH 2 CH2CH2-CONH-),
1.59(4H, m, -CH 2 CH2CH 2 CH2-CONH-),
2.16(2H, t, -CH 2 -CONH-),
3.38(6H, s, -O-CH 3 ),
3.40-3.85(38H, m, >C(CH 2O)2-, -O-(CH 2 CH 2O)4-, -CH 2 -maleimide)
4.70(1H, s, >CNH-CH 2 -OCOO-),
6.08(1H, s, -CH2-CONH-),
6.69(2H, s, -maleimide),
7.35-8.35(4H, m, arom.H)
温度計、窒素吹き込み管、攪拌子、Dean-stark管および冷却管を装備した100mLの三つ口フラスコに2-アミノ-2-メチル-1,3-プロパンジオール(13.1g, 125mmol)、炭酸ナトリウム(2.65g, 25mmol)、脱水メタノール(19.8g)およびベンゾニトリル(2.58g, 25 mmol)を仕込み、実施例1と同様に反応および精製を行い、式(36)の化合物を得た。
1H-NMR(CD3OD, 内部標準TMS); δ(ppm):
1.33(3H, s, >CCH 3 -CH2-OH),
3.49-3.60(2H, dd, >CCH3-CH 2 -OH),
4.10-4.53(2H, dd, -CNO-CH 2 -),
7.43-7.93(5H, m, arom.H)
温度計、窒素吹き込み管、攪拌子、Dean-stark管および冷却管を装備した50 mLの三つ口フラスコに式(36)の化合物(0.130g, 0.680mmol)、脱水THF(1.87g)、式(25)の化合物(0.651g, 1.02mmol)、1M t-ブトキシカリウムTHF溶液(0.928g, 1.02mmol)を仕込み、実施例3と同様に反応および精製を行い、式(37)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
1.37(3H, s, >CCH 3 -CH2-O-CH2-),
3.38(3H, s, -O-CH 3 ),
3.40-3.80(50H, m, >CCH3-CH 2 -O-CH2-, -O-(CH 2 CH 2O)12-,-CNO-CH 2 -),
4.01-4.47(2H, dd, -CNO-CH 2 -),
7.38-7.95(5H, m, arom.H)
温度計、窒素吹き込み管、攪拌子、Dean-stark管および冷却管を装備した50mLの三つ口フラスコに式(37)の化合物(0.160g, 0.218mmol)、蒸留水(4.40g)を加え溶解させた。85%リン酸(0.11ml)を加えてpH 1.5に調整した後、50℃にて6時間反応を行った。次に冷却しながら400g/L水酸化ナトリウム水溶液(1.40ml)を加えた後、50℃にて5時間反応を行った。続いて、6N塩酸を加えてpH 2.0に調整した後、トルエン、クロロホルムを加えて洗浄を行った。以降、実施例4と同様に精製を行い、式(38)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
1.03(3H, s, >CCH 3 -CH2-O-),
2.91(1H, brs, -OH),
3.38(3H, s, -O-CH 3 ),
3.30-3.85(52H, m, >CCH3-CH 2 -O-CH2-, -O-(CH 2 CH 2O)12-, >CCH3-CH 2 -OH)
撹拌子を入れた4 mlスクリュー管に式(38)の化合物(0.0920g, 0.142mmol)、6-マレイミドヘキサン酸(0.0345g, 0.163mmol)、DMT-MM(0.0564g, 0.163mmol)、アセトニトリル(0.980g)、トリエチルアミン(0.0172g, 0.170mmol)を仕込み、25℃にて5時間反応を行った。pH 3.0クエン酸緩衝液(1.10 g)を加えた後、トルエンを用いて洗浄を行った。以降、実施例5と同様に精製を行い、式(39)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
1.27(3H, s, >CCH 3 -CH2-O-), 1.32(2H, m, -CH 2 CH2CH2-CONH-),
1.63(4H, m, -CH 2 CH2CH 2 CH2-CONH-), 2.18(2H, t, -CH 2 -CONH-),
3.38(3H, s, -O-CH 3 ),
3.40-3.80(54H, m, >CCH3-CH 2 -O-CH2-, -O-(CH 2 CH 2O)12-, >CCH3-CH 2 -OH, -CH 2 -maleimide)
4.62(1H, brs, -OH), 6.20(1H, s, -CH2-CONH-),
6.69(2H, s, -maleimide)
撹拌子を入れた4mlスクリュー管に式(39)の化合物(0.050g, 0.0595mmol)、N-メチルモルホリン(0.0601g, 0.595mmol)、炭酸(4-ビスニトロフェニル)(0.145g, 0.476mmol)、脱水アセトニトリル(0.467g)を加え、窒素雰囲気、25℃にて4時間反応を行った。蒸留水(0.030g, 1.67mmol)、N-メチルモルホリン(0.0361g, 0.357mmol)を加え、25℃にて6時間撹拌した後、ジクロロメタンを用いて希釈した。以降、実施例5と同様に精製を行い、式(40)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
1.32(2H, m, -CH 2 CH2CH2-CONH-), 1.45(3H, s, >CCH 3 -CH2-O-),
1.60(4H, m, -CH 2 CH2CH 2 CH2-CONH-), 2.15(2H, t, -CH 2 -CONH-),
3.38(3H, s, -O-CH 3 ),
3.41-3.80(52H, m, >CCH3-CH 2 -O-CH2-, -O-(CH 2 CH 2O)12-, -CH 2 -maleimide),
4.51-4.59(2H, dd, >CCH3-CH 2 -OCOO-),
5.92(1H, s, -CH2-CONH-), 6.68(2H, s, -maleimide),
7.39-8.29(4H, m, arom.H)
撹拌子を入れた4 mlスクリュー管にドキソルビシン塩酸塩(6.34mg、 10.9μmol)、N,N-ジイソプロピルアミン(2.95mg、 22.9μmol)、N,N-ジメチルホルムアミド、および式(40)の化合物(10.0mg、 9.94μmol)を仕込み、4時間反応を行った。ジクロロメタンで希釈後、5wt%リン酸二水素ナトリウム・十二水和物水溶液を用いて水洗後、さらにイオン交換水を用いて水洗した。有機層を無水硫酸ナトリウムで乾燥し、濾過後、溶媒を減圧留去し、式(41)の薬物-リンカー化合物を得た。
1H-NMR(CD3Cl, 内部標準TMS); δ(ppm):
1.25-1.34(8H, m), 1.55-1.65(4H, m), 1.75-1.88(2H, m),
2.06-2.10(2H, m), 2.16-2.38(2H, m), 2.88(1H, dd),
3.00(1H, s), 3.18(2H, dd) 3.38(3H, s),
3.41-3.90(60H, m), 4.03-4.06(1H, m), 4.09(3H, s),
4.12-4.14(1H, m), 4.61(1H, s), 4.77(2H, d),
5.32(1H, s), 5.43-5.48(1H, m), 5.53(1H, s),
6.06(1H, d), 6.68(2H, s), 7.41(1H, d),
7.80(1H, t), 8.06(1H, d)
比較例6で得た式(41)の薬物-リンカー化合物について、疎水性相互作用クロマトグラフィー(HIC)カラムを用いたHPLC測定を実施例8と同じ測定条件にて行った。測定結果のチャートを図2に示した。
マウスで産生されたモノクローナル抗インターロイキン-1β抗体(0.500mg,Sigma-Aldrich)をリン酸緩衝食塩水(PBS,0.500mL)に溶解した。この溶液0.048mLを0.5mLのポリプロピレン製チューブに入れ、ここに50.0mMのエチレンジアミン四酢酸(EDTA,0.006mL)、0.800mMのトリス(2-カルボキシメチル)ホスフィン塩酸塩(TCEP)水溶液(0.006mL;抗体に対して15当量)を加え、混合物を37℃で1時間振とうした。上記溶液へ、N,N-ジメチルアセトアミドと式(41)の化合物を2.50mM含む溶液(0.007mL;抗体に対して53当量)を添加し、混合物を20℃で1時間さらに振とうした。N-アセチルシステインの2.50mM水溶液(0.007mL; 抗体に対して53当量)を添加し、得られた混合物を20℃で1時間さらに振とうした。PBS(10mL)を用いて平衡化したNAP-5カラム(GE Healthcare Life Science)に上記で得られた溶液を充填し、PBSで溶出させることで、抗体画分を分取した。
実施例10と同様の方法にて薬物平均結合数を算出し、1抗体あたりの薬物平均結合数は8.5であった。
温度計、窒素吹き込み管、攪拌子、Dean-stark管および冷却管を装備した50mLの三つ口フラスコにテトラコサエチレングリコールモノメチルエーテル(2.05g, 1.88mmol)、トルエン(10.3g)、トリエチルアミン(0.552g, 5.45mmol)、塩化メタンスルホニル(0.478g, 4.17mmol)を仕込み、25℃にて8時間反応を行った。ジクロロメタンを加えて希釈した後に水洗を行い、有機層を無水硫酸マグネシウムで乾燥した。ろ過後、溶媒を減圧留去し式(42)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
3.09(3H, s, -O-SO2-CH 3 ),
3.38(3H, s, -O-CH 3 ),
3.45-3.85(94H, m, CH3-O-(CH 2 CH 2O)23-CH 2 CH2-O-SO2-CH3),
4.38(2H, m, -CH 2 -O-SO2-CH3)
温度計、窒素吹き込み管、攪拌子、Dean-stark管および冷却管を装備した50 mLの三つ口フラスコに式(36)の化合物(0.174g, 0.910mmol)、脱水THF(2.86g)、式(42)の化合物(1.38g, 1.18mmol)、1M t-ブトキシカリウムTHF溶液(1.82g, 2.00mmol)を仕込み、実施例3と同様に反応および精製を行い、式(43)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
1.37(3H, s, >CCH 3 -CH2-O-CH2-),
3.38(3H, s, -O-CH 3 ),
3.40-3.80(98H, m, >CCH3-CH 2 -O-CH2-, -O-(CH 2 CH 2O)24-),
4.01-4.47(2H, dd, -CNO-CH 2 -),
7.38-7.95(5H, m, arom.H)
温度計、窒素吹き込み管、攪拌子、Dean-stark管および冷却管を装備した50 mLの三つ口フラスコに式(43)の化合物(0.909g, 0.720mmol)、蒸留水(25.0g)を加え溶解させた。85%リン酸(0.250ml)を加えてpH 1.5に調整した後、50℃にて6時間反応を行った。次に冷却しながら400g/L水酸化ナトリウム水溶液(7.63ml)を加えた後、50℃にて10時間反応を行った。続いて、6N塩酸を加えてpH2.0に調整した後、トルエン、クロロホルムを加えて洗浄を行った。以降、実施例4と同様に精製を行い、式(44)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
1.03(3H, s, >CCH 3 -CH2-O-),
3.00(1H, brs, -OH),
3.38(3H, s, -O-CH 3 ),
3.30-3.85(100H, m, >CCH3-CH 2 -O-CH2-, -O-(CH 2 CH 2O)24-, >CCH3-CH 2 -OH)
温度計、窒素吹き込み管、攪拌子、Dean-stark管および冷却管を装備した50mLの三つ口フラスコに式(44)の化合物(0.729g, 0.620mmol)、6-マレイミドヘキサン酸(0.164g, 0.775mmol)、DMT-MM(0.214g, 0.775mmol)、アセトニトリル(7.29g)、トリエチルアミン(0.082g, 0.806mmol)を仕込み、25℃にて3時間反応を行った。pH 3.0クエン酸緩衝液(8.75g)を加えた後、トルエンを用いて洗浄を行った。以降、実施例5と同様に精製を行い、式(45)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
1.23(3H, s, >CCH 3 -CH2-O-),
1.32(2H, m, -CH 2 CH2CH2-CONH-),
1.63(4H, m, -CH 2 CH2CH 2 CH2-CONH-),
2.18(2H, t, -CH 2 -CONH-),
3.38(3H, s, -O-CH 3 ),
3.40-3.80(102H, m, >CCH3-CH 2 -O-CH2-, -O-(CH 2 CH 2O)24-, >CCH3-CH 2 -OH, -CH 2 -maleimide)
4.71(1H, brs, -OH),
6.26(1H, s, -CH2-CONH-),
6.69(2H, s, -maleimide)
温度計、窒素吹き込み管、攪拌子、Dean-stark管および冷却管を装備した50mLの三つ口フラスコに式(45)の化合物(0.600g, 0.438mmol)、N-フェニルモルホリン(0.179g, 1.10mmol)、p-ニトロフェニルクロロホルメート(0.177g, 0.876mmol)、ジクロロメタン(5.81g)を加え、25℃にて3時間反応を行った。蒸留水(0.047g, 2.63 mmol)、N-フェニルモルホリン(0.179g, 1.10mmol)を加え、25℃にて6時間撹拌した後、ヘキサンを用いて希釈した。以降、実施例16と同様に精製を行い式(46)の化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
1.28(2H, m, -CH 2 CH2CH2-CONH-),
1.41(3H, s, >CCH 3 -CH2-O-),
1.63(4H, m, -CH 2 CH2CH 2 CH2-CONH-),
2.15(2H, t, -CH 2 -CONH-),
3.38(3H, s, -O-CH 3 ),
3.41-3.80(100H, m, >CCH3-CH 2 -O-CH2-, -O-(CH 2 CH 2O)24-, -CH 2 -maleimide),
4.51-4.60(2H, dd, >CCH3-CH 2 -OCOO-),
6.01(1H, s, -CH2-CONH-),
6.69(2H, s, -maleimide),
7.38-8.36(4H, m, arom.H)
撹拌子を入れた4mlスクリュー管にドキソルビシン塩酸塩(5.40mg、 9.31μmol)、N,N-ジイソプロピルアミン(2.51mg、 19.4μmol)、N,N-ジメチルホルムアミド、および式(35)の化合物(13.0mg、 8.47μmol)を仕込み、4時間反応を行った。その後、実施例7と同様に精製を行い、式(47)の薬物-リンカー化合物を得た。
1H-NMR(CDCl3, 内部標準TMS); δ(ppm):
1.25-1.34(8H, m), 1.55-1.65(4H, m), 1.75-1.88(2H, m),
2.06-2.10(2H, m), 2.16-2.38(2H, m), 2.88(1H, dd),
3.00(1H, s), 3.18(2H, dd), 3.38(3H, s),
3.41-3.90(103H, m), 4.03-4.06(1H, m),
4.09(3H, s), 4.12-4.14(1H, m), 4.61(1H, s),
4.77(2H, d), 5.32(1H, s), 5.43-5.48(1H, m),
5.53(1H, s), 6.06(1H, d), 6.68(2H, s),
7.41(1H, d), 7.80(1H, t), 8.06(1H, d)
比較例6で得た式(41)の薬物-リンカー化合物について、疎水性相互作用クロマトグラフィー(HIC)カラムを用いたHPLC測定を実施例11と同じ測定条件にて行った。測定波長495nmにおける結果のチャートを図4に示した。
比較例15で得た式(47)の薬物-リンカー化合物について、疎水性相互作用クロマトグラフィー(HIC)カラムを用いたHPLC測定を実施例11と同じ測定条件にて行った。測定波長495nmにおける結果のチャートを図5に示した。
なお、本願は、2017年3月30日付で出願された日本国特許出願(2017-066987)に基づいており、その全体が引用により援用される。また、ここに引用されるすべての参照は全体として取り込まれる。
Claims (8)
- 式(1)で示される、ヘテロ二官能性単分散ポリエチレングリコール。
X1およびY1はそれぞれ生体機能性分子に存在する官能基と反応して共有結合を形成する官能基を少なくとも含む原子団であり、原子団X1が含む前記官能基と原子団Y1が含む前記官能基とは互いに異なる;
R1は炭素数1~7の炭化水素基または水素原子であり;
nは3~72の整数であり;
A1は-L1-(CH2)m1-、-L1-(CH2)m1-L2-(CH2)m2-または単結合を表し、L1はエーテル結合、アミド結合、ウレタン結合、2級アミノ基または単結合を表し、L2はエーテル結合、アミド結合またはウレタン結合を表し、m1およびm2はそれぞれ独立して1~5の整数を表し;および
B1は-L3-(CH2)m3-、-L3-(CH2)m3-L4-(CH2)m4-または単結合を表し、L3はアミド結合または単結合を表し、L4はエーテル結合、アミド結合またはウレタン結合を表し、m3およびm4はそれぞれ独立して1~5の整数を表す。) - 式(1)におけるA1が-NHC(O)-(CH2)m1-または-NHC(O)-(CH2)m1-L2-(CH2)m2-で表され、かつB1が-(CH2)m3-または-(CH2)m3-L4-(CH2)m4-で表される、請求項1記載のヘテロ二官能性単分散ポリエチレングリコール。
- 式(1)におけるA1が-CH2-または-CH2-L2-(CH2)m2-で表され、かつB1が-CH2-または-CH2-L4-(CH2)m4-で表される、請求項1記載のヘテロ二官能性単分散ポリエチレングリコール。
- 式(1)におけるA1が-O-(CH2)m1-または-O-(CH2)m1-L2-(CH2)m2-で表され、かつB1が-CH2-または-CH2-L4-(CH2)m4-で表される、請求項1記載のヘテロ二官能性単分散ポリエチレングリコール。
- 式(1)におけるA1が-C(O)NH-(CH2)m1-または-C(O)NH-(CH2)m1-L2-(CH2)m2-で表され、かつB1が-CH2-または-CH2-L4-(CH2)m4-で表される、請求項1記載のヘテロ二官能性単分散ポリエチレングリコール。
- 式(1)におけるA1が-C(O)NH-(CH2)m1-または-C(O)NH-(CH2)m1-L2-(CH2)m2-で表され、かつB1が-C(O)NH-(CH2)m3-または-C(O)NH-(CH2)m3-L4-(CH2)m4-で表される、請求項1記載のヘテロ二官能性単分散ポリエチレングリコール。
- 式(2)で示される、ヘテロ二官能性単分散ポリエチレングリコールを含んで成る抗体-薬物複合体。
X2とY2との一方が抗体であり、他方が薬物であり;
R1は炭素数1~7の炭化水素基または水素原子であり;
nは3~72の整数であり;
A2は、-L1-(CH2)m1-L5-、-L1-(CH2)m1-L2-(CH2)m2-L5-または単結合を表し、L1はエーテル結合、アミド結合、ウレタン結合、2級アミノ基または単結合を表し、L2はエーテル結合、アミド結合またはウレタン結合を表し、m1およびm2はそれぞれ独立して1~5の整数を表し、L5はアミド結合、ウレタン結合、チオエーテル結合、ジスルフィド結合、カーボネート結合、エステル結合、エーテル結合、1H-1,2,3-トリアゾール-1,4-ジイル構造、2級アミノ基、ヒドラジド基、オキシアミド基もしくはこれらを含む炭化水素基であり;および
B2は-L3-(CH2)m3-L6-、-L3-(CH2)m3-L4-(CH2)m4-L6-または単結合を表し、L3はアミド結合または単結合を表し、L4はエーテル結合、アミド結合またはウレタン結合を表し、m3およびm4はそれぞれ独立して1~5の整数を表し、L6はアミド結合、ウレタン結合、チオエーテル結合、ジスルフィド結合、カーボネート結合、エステル結合、エーテル結合、1H-1,2,3-トリアゾール-1,4-ジイル構造、2級アミノ基、ヒドラジド基、オキシアミド基もしくはこれらを含む炭化水素基である。)
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2019176875A1 (ja) * | 2018-03-13 | 2019-09-19 | 日油株式会社 | 主鎖および側鎖に単分散ポリエチレングリコールを有するヘテロ二官能性化合物 |
US12091502B2 (en) | 2018-03-13 | 2024-09-17 | Nof Corporation | Heterobifunctional compound having monodispersed polyethylene glycol in main chain and side chain |
WO2021060439A1 (ja) * | 2019-09-26 | 2021-04-01 | 日油株式会社 | ペプチドリンカーを有するヘテロ二官能性単分散ポリエチレングリコール |
KR20220069989A (ko) | 2019-09-26 | 2022-05-27 | 니치유 가부시키가이샤 | 펩티드 링커를 갖는 헤테로 2작용성 단분산 폴리에틸렌글리콜 |
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Publication number | Publication date |
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CN110475802B (zh) | 2022-03-08 |
EP3604385A1 (en) | 2020-02-05 |
KR102464270B1 (ko) | 2022-11-07 |
JP6990355B2 (ja) | 2022-01-12 |
US20200000933A1 (en) | 2020-01-02 |
EP3604385A4 (en) | 2021-01-20 |
CA3055728A1 (en) | 2018-10-04 |
KR20190129904A (ko) | 2019-11-20 |
US11419946B2 (en) | 2022-08-23 |
CN110475802A (zh) | 2019-11-19 |
EP3604385B1 (en) | 2024-05-01 |
JP2018172652A (ja) | 2018-11-08 |
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