WO2019114666A1 - 生物活性物偶联物及其制备方法和用途 - Google Patents

生物活性物偶联物及其制备方法和用途 Download PDF

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WO2019114666A1
WO2019114666A1 PCT/CN2018/120125 CN2018120125W WO2019114666A1 WO 2019114666 A1 WO2019114666 A1 WO 2019114666A1 CN 2018120125 W CN2018120125 W CN 2018120125W WO 2019114666 A1 WO2019114666 A1 WO 2019114666A1
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Prior art keywords
group
compound
integer
conjugate
pharmaceutically acceptable
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PCT/CN2018/120125
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English (en)
French (fr)
Chinese (zh)
Inventor
蔡家强
宋帅
薛彤彤
肖亮
邓汉文
田强
汪静
刘登念
刘立平
喻海旻
杨周宁
曹旭
钟国庆
王利春
王晶翼
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Sichuan Kelun Biotech Biopharmaceutical Co Ltd
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Sichuan Kelun Biotech Biopharmaceutical Co Ltd
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Priority to CA3080236A priority Critical patent/CA3080236A1/en
Priority to CN202510392472.4A priority patent/CN120248020B/zh
Priority to EP18888623.8A priority patent/EP3725798B1/en
Priority to KR1020207010986A priority patent/KR102923527B1/ko
Priority to CN202411350546.XA priority patent/CN119306732B/zh
Priority to KR1020257014161A priority patent/KR20250067188A/ko
Priority to CN202510391812.1A priority patent/CN120248019B/zh
Priority to CN202411367115.4A priority patent/CN119241554A/zh
Priority to CN202111114512.7A priority patent/CN113683622B/zh
Priority to CN201880069543.5A priority patent/CN111295389B/zh
Priority to JP2020521429A priority patent/JP7446993B2/ja
Priority to US16/758,980 priority patent/US11970506B2/en
Priority to CN202411360905.XA priority patent/CN119219654A/zh
Priority to EP25192960.0A priority patent/EP4667495A3/en
Priority to CN202111113700.8A priority patent/CN113698414B/zh
Priority to EP25161791.6A priority patent/EP4600271A3/en
Application filed by Sichuan Kelun Biotech Biopharmaceutical Co Ltd filed Critical Sichuan Kelun Biotech Biopharmaceutical Co Ltd
Publication of WO2019114666A1 publication Critical patent/WO2019114666A1/zh
Anticipated expiration legal-status Critical
Priority to US18/155,650 priority patent/US20230357259A1/en
Priority to JP2023221143A priority patent/JP2024038168A/ja
Priority to US18/648,187 priority patent/US20240382612A1/en
Priority to JP2025048551A priority patent/JP2025106317A/ja
Ceased legal-status Critical Current

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    • 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
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    • A61K31/4738—Quinolines; Isoquinolines ortho- or peri-condensed with heterocyclic ring systems
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    • C07K16/00—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies
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Definitions

  • the present disclosure pertains to the field of medical technology, and relates to bioactive conjugates, methods for their preparation, and diseases for preventing and/or treating disorders associated with abnormal cellular activities, including but not limited to use in the prevention and/or treatment of neoplastic diseases.
  • Chemotherapy was once the standard treatment for cancer, but high-killing bioactive molecules can kill normal cells and cause serious side effects.
  • Targeted anti-tumor drugs have become a hot spot in the field of cancer research due to their simultaneous targeting and anti-tumor activity.
  • biomacromolecules such as therapeutic antibodies or antibody fragments
  • targeted small molecule ligands have been used for the development of antitumor drugs and tumor targeted therapy.
  • biomacromolecules although highly targeted, have limited therapeutic effects on solid tumors; while bioactive molecules have high killing efficacy against cancer cells, they often lack targeting and often accidentally injure normal cells, causing serious toxic side effect.
  • ADC antibody-drug conjugates
  • the ADC combines the targeting of antibodies with the activity of biologically active molecules to become a "bio-missile".
  • the antibody directs the ADC to bind to the target cell, which is then internalized by the cell, releasing the drug, and treating the disease. Because the antibody has specificity and targeting to tumor cell related targets, its application value is not only reflected in the treatment, but also becomes an ideal carrier for drug targeted delivery, which reduces the side effects of the drug.
  • Small molecule drug conjugation SMDC
  • ADC antibody-drug conjugate
  • ADCs already on the market: Mylotarg (Gemtuzumab Ozogamicin, gemtuzumab oxazometh), Adcetris (Brentuximab Vedotin, CD30 mAb-MMAE), Kadcyla (Trastuzumab Emtansine, trastuzumab- ⁇ Dessert alkaloids and Besponsa (Inotuzumab ozogamicin, CD22 mAb-caccimycin).
  • ADC drugs consist of antibodies, biologically active molecules, and linkers.
  • the bioactive molecule is covalently coupled to the antibody via a linker;
  • the antibody eg, a monoclonal antibody
  • the antibody is capable of specifically recognizing a specific target on the surface of the tumor cell, thereby directing the ADC to the surface of the cancer cell and allowing the ADC to pass through the endocytosis
  • the effect enters the cancer cells; then the bioactive molecules are released in the cancer cells, achieving the effect of specifically killing the cancer cells without damaging the normal tissue cells.
  • Lysine is the most common attachment site in antibodies, and its ⁇ -amino group can react with the activated carboxyl group of the linker to form an amide bond.
  • site-directed coupling that is, activating a group to activate a carboxyl group of a linker, and then forming an amide bond with a specific lysine ⁇ -amino group in the antibody to complete the coupling.
  • an amide bond is prone to hydrolysis under the action of an enzyme in the body, causing the bioactive molecule and the antibody to fall off when the target cell is not reached, and the toxicity of the ADC is increased while the targeting of the ADC is lost.
  • the thio group of the antibody cysteine is present in the form of a disulfide bond. Opening the disulfide bond in the antibody provides multiple free sulfhydryl groups as coupling sites. Coupling with an antibody thiol group, one method is a Michael addition reaction of a free sulfhydryl group on the antibody with maleimide, or a specific substrate and a free sulfhydryl group on the antibody can be formed by two Michael addition reactions. A uniquely structured sulfur bridge.
  • the ADC obtained by the thiol Michael addition method will undergo an inverse Michael addition in the systemic circulation, resulting in a toxic reaction.
  • the present invention has discovered a novel class of bioactive conjugates obtained by improving the manner in which the drug is coupled to a targeting moiety in an ADC or SMDC drug.
  • the conjugate has higher stability, very high coupling efficiency (90%) and higher drug loading (DAR value 5-8), and the present disclosure is based on the above findings.
  • the ADC of the present invention such as BT001021 (Example 32)
  • the bioactive small molecule toxin is significantly exposed in tumor tissue above plasma tissue exposure.
  • the Immu-132 ADC has significantly higher plasma exposure than tumor tissue exposure under the same route of administration, the ADC of the present invention therefore has a better therapeutic window than Immu-132.
  • the ADC of the present invention has a better therapeutic effect than Immu-132 in animal models of gastric cancer, breast cancer and non-small cell lung cancer tumors.
  • a first aspect of the present disclosure provides a compound of formula (I) or a pharmaceutically acceptable salt thereof,
  • T is a biologically active molecular fragment, preferably a molecular fragment having antitumor biological activity
  • L 1 is selected from the group consisting of amino acids, peptides of 2-10 amino acids, oligosaccharides, -(CH 2 ) t1 -, -(CH 2 CH 2 O) t1 -(CH 2 ) t2 -, Wherein each of R, R', R 1 and R 2 is independently H (hydrogen), D (oxime), halogen, carboxylic acid, sulfonic acid, cyano, C 1-6 alkyl, halogenated C 1- 6 alkyl (eg -CF 3 ), cyano substituted C 1-6 alkyl (eg -CH 2 CN), C 1-6 alkoxy, C 2-10 alkenyl, C 2-10 alkynyl, a C 3-6 cycloalkyl group, a 6-10 membered aryl group or a 5-12 membered heteroaryl group, each of Z 1 being independently an amino acid or a peptide of 2 to 10 amino acids, each of t 1 and t 2
  • L 2 is selected from the group consisting of amino acids, peptides of 2-10 amino acids, oligosaccharides, -(CH 2 ) t1 -, -(CH 2 CH 2 O) t1 -(CH 2 ) t2 -,
  • R 3 , R 4 , R 5 and R 6 are each independently selected from the group consisting of H (hydrogen), D (oxime), halogen, carboxylic acid, sulfonic acid, CN, C 1-6 alkyl, halogenated C 1- 6 alkyl, cyano substituted C 1-6 alkyl, C 1-6 alkoxy, C 2-10 alkenyl, C 2-10 alkynyl and C 3-6 cycloalkyl, or, R 3 , R 4 or R 5 , R 6 or R 3 , R 5 together with the carbon atom to which they are attached form a 3-8 membered ring, and t 1 and t 2 are each independently 0, 1 , 2 , 3, 4, 5 or 6
  • L 4 is selected from Wherein, Z 5 is preferably selected from C 2-6 alkenylene, C 2-6 alkynylene hydrocarbon, an amide group, a sulfone group, a sulfoxide group, 6-10-membered aryl, 5-6 membered heteroaryl; Z 2 is selected from C 1-6 alkylene, C 2-10 alkenylene, C 2-10 alkynylene, C 3-8 cycloalkylene, 6-10 membered aryl and 5-14 membered heteroaryl; R 9 Selected from H (hydrogen), C 1-6 alkyl; Z 3 is absent or selected from C 1-6 alkylene, halogenated C 1-6 alkylene and alkoxy substituted C 1-6 alkylene Or R 9 and Z 3 together with the nitrogen atom to which they are attached form a 4-8 membered heterocyclic group; ⁇ is independently 0, 1 , 2, 3, 4, 5 or 6; and 2 positions of L 4 Connected to E;
  • E is selected from the group consisting of optionally substituted by one or more R 12 : 6-10 membered aryl, 5-14 membered heteroaryl; wherein R 12 is independently selected from H (hydrogen), D ( ⁇ ) , halogen, CN, nitro, C 1-6 alkyl and halogenated C 1-6 alkyl;
  • G is a leaving group for a nucleophilic substitution reaction; such as a halogen, a sulfonyl group, a sulfonate group, a nitro group, and the like;
  • n 1 , m 2 and m 3 are each independently 0, 1 , 2 , 3 , 4, 5, 6, 7, 8, 9, or 10.
  • L 1 is selected from the group consisting of Val, Cit, Phe, Lys, D-Val, Leu, Gly, Ala, Asn, a peptide consisting of 2-5 amino acids, Wherein each of R, R', R 1 and R 2 is independently H (hydrogen), D ( ⁇ ), C 1-6 alkyl, C 2-10 alkenyl, C 2-10 alkynyl or C 3 -6 cycloalkyl, Z 1 is Val, Cit, Phe, Lys, D-Val, Leu, Gly, Ala, Asn, Val-Cit, Cit-Val, Cit-Ala, Val-Ala, Lys-Val, Val -Lys(Ac), Phe-Lys, Phe-Lys(Ac), D-Val-Leu-Lys, Gly-Gly-Arg or Ala-Ala-Asn, x 1 is 0, 1, 2 or 3, x 3 It is 0, 1, 2, 3 or 4.
  • L 1 is selected from the group consisting of Val, Cit, Phe, Lys, D-Val, Leu, Gly, Ala, Asn, Cit-Val, Val-Ala, Lys-Val, Val-Lys (Ac), Phe-Lys, Phe-Lys (Ac), D-Val-Leu-Lys, Gly-Gly-Arg, Ala-Ala-Asn, Wherein R, R' and R 1 are each independently H (hydrogen), D ( ⁇ ), C 1-6 alkyl, C 2-10 alkenyl, C 2-10 alkynyl or C 3-6 naphthenic Base, Z 1 is Val, Cit, Phe, Lys, D-Val, Leu, Gly, Ala, Asn, Val-Cit, Cit-Val, Cit-Ala, Val-Ala, Lys-Val, Val-Lys (Ac ), Phe-Lys, Phe-Lys (Ac), D-Val-Leu-Lys
  • L 1 is selected from the group consisting of Lys, Cit, Cit-Val, Val-Ala, Lys-Val, Wherein R, R' and R 1 are each independently H (hydrogen), D ( ⁇ ) or C 1-4 alkyl, and Z 1 is Cit, Lys, Cit-Val, Cit-Ala, Val-Ala or Lys -Val, x 1 and x 3 are each independently 0, 1, or 2.
  • L 1 is selected from the group consisting of Lys, Cit, Cit-Val, Val-Ala, Lys-Val,
  • L 1 is selected from
  • L 2 is selected from the group consisting of Val, Cit, Phe, Lys, D-Val, Leu, Gly, Ala, Asn, a peptide consisting of 2-5 amino acids,
  • R 3 , R 4 , R 5 and R 6 are each independently selected from the group consisting of H (hydrogen), D (oxime), halogen, carboxylic acid, sulfonic acid, CF 3 , CN, CH 2 CN, C 1-4 alkane.
  • y 1 and y 2 are each independently 0, 1 , 2 , 3, 4 , 6, 7 or 8, and at a position L 1 L 2 is connected;
  • n 1 0, 1, 2 or 3.
  • L 2 is selected from the group consisting of Val, Cit, Phe, Lys, D-Val, Leu, Gly, Ala, Asn, Val-Cit, Cit-Val, Val-Ala, Lys-Val, Val-Lys (Ac), Phe-Lys, Phe-Lys (Ac), D-Val-Leu-Lys, Gly-Gly-Arg, Ala-Ala-Asn,
  • R 3 , R 4 , R 5 and R 6 are each independently selected from the group consisting of H (hydrogen), D (oxime), halogen, carboxylic acid, sulfonic acid, CF 3 , CN, CH 2 CN, C 1-4 alkane.
  • y 1 and y 2 are each independently 0, 1 , 2 , 3, 4 , 6, 7 or 8, and at a position L 1 L 2 is connected;
  • n 1 0, 1, or 2.
  • L 2 is selected from Wherein R 3 , R 4 , R 5 and R 6 are each independently selected from the group consisting of H (hydrogen), D ( ⁇ ) and C 1-4 alkyl, and y 1 and y 2 are each independently 0, 1, 2 3,4,5,6,7 or 8, and L 2 at a position connected to the L 1;
  • L 2 is selected from
  • L 2 is selected from
  • L 3 is selected from the group consisting of, optionally substituted by one or more R 7 : amino, 3-8 membered cycloalkyl, 3-8 membered heteroheterocyclyl, 6-12.
  • W is oxygen or NR 8
  • n 2 0, 1, 2 or 3.
  • n 2 0, 1, or 2.
  • L 3 is selected from the group consisting of triazole; m 2 is 0 or 1.
  • L 3 is selected from m 2 is 0 or 1; preferably, the 1 position of L 3 is bonded to L 2 .
  • L 3 is selected from the group consisting of, optionally substituted by one or more R 7 : amino,
  • W is NR 8 and R 8 is selected from the group consisting of H (hydrogen), D (oxime), C 1-6 alkyl, C 2-6 alkenyl, C 3-6 alkynyl and C 3-6 cycloalkyl.
  • L 3 is selected from
  • R q is each independently selected from C 1-6 alkyl, C 2-6 alkenyl, C 3-6 alkynyl and C 3-8 cycloalkyl; ⁇ 1 is 0, 1 or 2; ⁇ 2 is 1, 2 or 3.
  • L 3 is selected from
  • L 4 is selected from Wherein Z 4 is a 6-10 membered aryl group, a 5-6 membered heteroaryl group; R 10 is selected from the group consisting of H (hydrogen) and C 1-6 alkyl; and Z 2 is selected from the group consisting of C 1-6 alkylene, C 2 10 alkenylene, C 2-10 alkynylene, C 3-8 cycloalkyl; R 9 is selected from H (hydrogen), C 1-6 alkyl; Z 3 is absent or selected from C 1-6 Or an alkyl group; or, R 9 and Z 3 together with the nitrogen atom to which they are attached form a 4-8 membered heterocyclic group; ⁇ is independently 0, 1 , 2, 3, 4 , 5 or 6, and 2 positions of L 4 Connected to E;
  • n 3 is selected from 0, 1, 2 or 3.
  • L 4 is selected from Wherein Z 4 is a benzene ring, R 10 is selected from H (hydrogen), C 1-6 alkyl; Z 2 is selected from C 1-6 alkylene, C 2-10 alkenylene, C 2-10 alkyne a C 3-8 cycloalkylene group; R 9 is selected from H (hydrogen), C 1-6 alkyl; Z 3 is absent or selected from a C 1-6 alkylene group, or R 9 together with Z 3 The nitrogen atom to which it is bonded forms a 4-8 membered heterocyclic group; ⁇ is independently 0, 1 , 2, 3, 4 , 5 or 6, and the 2 position of L 4 is bonded to E;
  • n 3 is selected from 0, 1, 2 or 3.
  • L 4 is selected from Wherein Z 4 is a 5-6 membered heteroaryl; R 10 is selected from H (hydrogen), C 1- 6 alkyl; Z 2 is selected from C 1-6 alkylene, C 2-10 alkenylene, C 2 -10 alkynylene, C 3-8 cycloalkylene; R 9 is selected from H (hydrogen), C 1-6 alkyl; Z 3 is absent or selected from C 1-6 alkylene; or, R 9 Forming a 4-8 membered heterocyclic group with Z 3 together with the nitrogen atom to which it is attached; ⁇ is independently 0, 1 , 2, 3, 4 , 5 or 6, and the 2 position of L 4 is bonded to E;
  • n 3 is selected from 0, 1, 2 or 3.
  • L 4 is selected from
  • L 4 is selected from
  • L 4 is selected from
  • E is selected from a 5-10 membered heteroaryl optionally substituted with one or more R 12 ; wherein R 12 is independently selected from H (hydrogen), D (oxime), halogen, CN, nitro, C 1-4 alkyl and halo C 1-4 alkyl.
  • E is selected from the group consisting of, optionally substituted by one or more R 12 : pyrimidine, quinazoline, and pyrrolo[2,3-d]pyrimidine; wherein R 12 is independently selected From H (hydrogen), D (oxime), halogen, CN, nitro, C 1-2 alkyl and halo C 1-2 alkyl.
  • E is selected from pyrimidines optionally substituted with one or more R 12 ; wherein R 12 is independently selected from H (hydrogen) and D (oxime).
  • G is selected from the group consisting of halogen, OMs, OTs, OTf, nitro, and the following groups optionally substituted with one or more R 13 : alkyl sulfide group, aryl sulfide group, hetero An aryl sulfide group, an alkyl sulfoxide group, an aryl sulfoxide group, a heteroaryl sulfoxide group, an alkylsulfonyl group, an arylsulfonyl group, a heteroarylsulfonyl group; wherein R 13 is independently selected from H (hydrogen), D( ⁇ ), halogen, CN, nitro, C 1-6 alkyl, halogenated C 1-6 alkyl, C 1-6 alkoxy, 6-10 membered aryl and 5-12 Meta-heteroaryl.
  • G is selected from the group consisting of F, Cl, Br, I, OMs, OTs, OTf, methylsulfonyl, ethylsulfonyl, p-toluenesulfonyl, and naphthalenesulfonyl.
  • G is selected from the group consisting of F, Cl, Br, OMs, OTs, methylsulfonyl, and p-toluenesulfonyl.
  • G is selected from the group consisting of Cl and methylsulfonyl.
  • G is preferably a methylsulfonyl group
  • E is preferably a pyrimidine
  • m 3 is 1.
  • m 4 is preferably an integer of 0 to 6
  • the methylsulfonyl group is a substituent of a carbon atom adjacent to a nitrogen atom in the pyrimidine ring.
  • m 5 is preferably an integer of 0 to 6
  • the methylsulfonyl group is a substituent of a carbon atom adjacent to a nitrogen atom in the pyrimidine ring.
  • m 6 is preferably an integer from 0 to 6
  • the methylsulfonyl group is a substituent of a carbon atom adjacent to the nitrogen atom in the pyrimidine ring.
  • m 7 is an integer selected from 1 to 5
  • the methylsulfonyl group is a substituent of a carbon atom adjacent to a nitrogen atom in the pyrimidine ring.
  • m 8 is an integer selected from 1 to 5
  • the methylsulfonyl group is a substituent of a carbon atom adjacent to a nitrogen atom in the pyrimidine ring.
  • m 9 is an integer selected from 1 to 5
  • R 13 is selected from hydrogen, C 1-6 alkyl, and the methylsulfonyl group is a substituent of a carbon atom adjacent to a nitrogen atom in the pyrimidine ring.
  • m 10 is selected from an integer of 0-6, and Z 4 is selected from a 5-6 membered heteroaryl group; the methylsulfonyl group is a substituent of a carbon atom adjacent to a nitrogen atom in the pyrimidine ring.
  • a methylsulfonyl group is a substituent of a carbon atom adjacent to a nitrogen atom in the pyrimidine ring. More preferably, m 10 is selected from an integer from 0-6.
  • n 10 is selected from an integer from 0-6.
  • n is derived from oxazole and thiazole, which is a substituent of a carbon atom adjacent to a nitrogen atom in the pyrimidine ring. More preferably, m 10 is selected from an integer from 0-6.
  • m 10 is selected from an integer of 0-6, Z 4 is selected from a 6-10 membered aryl group; and the methylsulfonyl group is a carbon atom substituent adjacent to the nitrogen atom. More preferably, m 10 is selected from an integer from 0-6.
  • m 10 is an integer selected from 0 to 6
  • Z 4 is a benzene ring.
  • T is a biologically active molecular fragment.
  • the bioactive molecule is selected from the group consisting of a metal complex, such as a metal platinum complex (eg, oxaliplatin), a metal gold complex; a glycopeptide antibiotic, such as bleomycin or pingyangmycin DNA topoisomerase inhibitors, such as topoisomerase I inhibitors (eg camptothecin, hydroxycamptothecin, 9-aminocamptothecin, SN-38, irinotecan, topotecan, beloate) Kang or rupibine), topoisomerase II inhibitors (eg actinomycin D, doxorubicin, doxorubicin, doxymethine, daunorubicin, mitoxantrone, podophyllotoxin or Etoposide); interfering with DNA synthesis drugs, such as methotrexate, 5-fluorouracil, cy
  • the biologically active molecule is selected from Wherein R 14 is selected from R 15 substituted acyl or sulfonyl, R 15 is selected from C 1-6 alkyl, halo C 1-6 alkyl, 6-10 membered aryl and 5-12 membered heteroaryl; 16 is selected from the group consisting of H (hydrogen), D (oxime), C 1-6 alkyl, R 17 substituted C 1-6 alkyl, and R 17 is selected from aryl, heteroaryl including, but not limited to, phenyl , pyridyl, m 11 is selected from 0, 1, 2.
  • the biologically active molecule is selected from Wherein R 14 is selected from R 15 substituted acyl or sulfonyl, R 15 is selected from C 1-6 alkyl, halo C 1-6 alkyl, 6-10 membered aryl and 5-12 membered heteroaryl; 16 is selected from the group consisting of H (hydrogen), D (oxime), C 1-6 alkyl, R 17 substituted C 1-6 alkyl, and R 17 is selected from aryl, heteroaryl including, but not limited to, phenyl , pyridyl, m 11 is selected from 0, 1, 2.
  • the biologically active molecule is selected from
  • the biologically active molecule is selected from
  • the biologically active molecule is selected from
  • the biologically active molecule is selected from
  • the biologically active molecule is selected from
  • T is selected from
  • T is selected from
  • T is selected from
  • T is selected from
  • T is selected from
  • the compound of formula (I) is selected from:
  • the compound is selected from:
  • the present disclosure provides a conjugate comprising a biologically active molecule, a linker, and a targeting moiety.
  • the targeting moiety is linked to the linker via its reactive group (eg, a thiol group) to form a conjugate.
  • the conjugate structure is as shown in formula (II):
  • A is a targeting moiety (eg, a small molecule ligand, a protein, a polypeptide, a non-proteinaceous agent (eg, sugar, RNA, or DNA));
  • ⁇ is selected from an integer or a fraction between 1 and 10; preferably, ⁇ is selected from An integer or fraction between 5-8 (for example, 5, 6, 7, or 8);
  • the target of A is selected from the group consisting of epidermal growth factor, Trop-2, CD37, HER2, CD70, EGFRvIII, Mesothelin, Folate eceoptor1, Mucin 1, CD138, CD20, CD19, CD30, SLTRK6, Nectin 4, Tissue Factor, Mucin16, Endothelinreceoptor, STEAP1, SLC39A6, Guanylylcyclase C, PSMA, CCD79b, CD22, Sodium phosphate cotransporter2B, GPNMB, Trophoblast glycoprotein, AGS-16, EGFR, CD33, CD66e, CD74, CD56, PD-L1, TACSTD2, DR5, E16, STEAP1, 0772P, MPF, Napi3b, Sema 5b, PSCA hlg, ETBR, MSG783, STEAP2, TrpM4, CRIPTO, CD21, CD79b, FcRH2, NCA, MDP,
  • A is a small molecule ligand, such as a folic acid derivative, a glutamate urea derivative, a somatostatin derivative, an aryl sulfonamide derivative (eg, a carbonic anhydrase IX inhibitor), linked Two aliphatic fluorene polyenes, cyanine dyes or IR-783 or derivatives thereof.
  • a small molecule ligand such as a folic acid derivative, a glutamate urea derivative, a somatostatin derivative, an aryl sulfonamide derivative (eg, a carbonic anhydrase IX inhibitor), linked Two aliphatic fluorene polyenes, cyanine dyes or IR-783 or derivatives thereof.
  • A is selected from
  • A is an antibody, such as a monoclonal antibody or antigen-binding fragment thereof, wherein the monoclonal antibody or antigen-binding fragment thereof comprises Fab, Fab', F(ab') 2 , Fd, Fv, dAb, a complementarity determining region fragment, a single chain antibody (eg, scFv), a non-human antibody, a humanized antibody, a chimeric antibody, a fully human antibody, a probody, a bispecific antibody, or a multispecific antibody.
  • a monoclonal antibody or antigen-binding fragment thereof comprises Fab, Fab', F(ab') 2 , Fd, Fv, dAb, a complementarity determining region fragment, a single chain antibody (eg, scFv), a non-human antibody, a humanized antibody, a chimeric antibody, a fully human antibody, a probody, a bispecific antibody, or a multispecific antibody.
  • A is a monoclonal antibody against Her 2 , such as trastuzumab, Pertuzumab or a monoclonal antibody against Trop-2, such as Sacituzumab.
  • A is a monoclonal antibody against Trop-2, such as M1, M2, and M3.
  • Lys at the end of the heavy chain is readily deleted, but this deletion does not affect biological activity, see Dick, L. W. et al, Biotechnol. Bioeng., 100: 1132-1143.
  • the above M1, M2, M3 mAb and its heavy chain-terminal Lys deleted sequence or fragments thereof belong to the M1, M2, M3 mAbs of the present invention.
  • A is selected from the group consisting of an RGD peptide that recognizes a cell surface integrin receptor; a growth factor that recognizes a cell surface growth factor receptor such as EGF, PDGF, or VEGF; and a functional cell surface plasminogen A peptide of activator, bombesin, bradykinin, somatostatin or prostate specific membrane antigen receptor.
  • A is selected from the group consisting of a CD40 ligand, a CD30 ligand, an OX40 ligand, a PD-1 ligand, an ErbB ligand, a Her2 ligand, a TACSTD2 ligand, and a DR5 ligand.
  • the conjugate is selected from the group consisting of
  • ⁇ is selected from an integer or a decimal between 1-10
  • the mAb is a monoclonal antibody against Trop-2 or a monoclonal antibody against Her 2; preferably, the monoclonal antibody against Trop-2 is selected from Sacituzumab, M1 , M2 and M3 antibodies, monoclonal antibodies against Her 2 are selected from trastuzumab, pertuzumab; preferably, ⁇ is selected from integers or decimals between 5-8 (eg 5, 6, 7 or 8).
  • the conjugate is selected from the group consisting of
  • ⁇ is selected from an integer or a decimal between 1-10
  • the mAb is a monoclonal antibody against Trop-2 or a monoclonal antibody against Her 2; preferably, the monoclonal antibody against Trop-2 is selected from the group consisting of Sacituzumab,
  • the monoclonal antibody to Her 2 is selected from trastuzumab, pertuzumab; preferably, ⁇ is selected from an integer or a fraction between 5-8 (eg, 5, 6, 7, or 8).
  • the conjugate is:
  • A1 is a Sacituzumab antibody
  • ⁇ is selected from an integer or a decimal between 1-10; and preferred ⁇ is selected from an integer or a decimal between 5-8, such as 6-7, 6-7.5, 6-8, 6.5- An integer or fraction between 7,6.5-7.5, 6.5-8, 7-8, or 7.5-8.
  • the conjugate is:
  • A1 is a Sacituzumab antibody
  • ⁇ is selected from an integer or a decimal between 1-10; and preferred ⁇ is selected from an integer or a decimal between 5-8, such as 6-7, 6-7.5, 6-8, 6.5- An integer or fraction between 7,6.5-7.5, 6.5-8, 7-8, or 7.5-8.
  • the conjugate is:
  • A1 is a Sacituzumab antibody
  • ⁇ is selected from an integer or a decimal between 1-10; and preferred ⁇ is selected from an integer or a decimal between 5-8, such as 6-7, 6-7.5, 6-8, 6.5- An integer or fraction between 7,6.5-7.5, 6.5-8, 7-8, or 7.5-8.
  • the conjugate is:
  • A1 is a fragment of a Sacituzumab antibody
  • ⁇ is selected from an integer or a decimal between 1-10; preferably ⁇ is selected from an integer or a decimal between 5-8, such as 6-7, 6-7.5, 6-8, An integer or fraction between 6.5-7, 6.5-7.5, 6.5-8, 7-8 or 7.5-8.
  • the conjugate is:
  • A2 is trastuzumab, and ⁇ is selected from an integer or a decimal between 1-10; preferably, ⁇ is selected from an integer or a decimal between 5-8, such as 6-7, 6-7.5, 6- An integer or fraction between 8,6.5-7, 6.5-7.5, 6.5-8, 7-8 or 7.5-8.
  • the conjugate is:
  • A2 is trastuzumab, and ⁇ is selected from an integer or a decimal between 1-10; preferably, ⁇ is selected from an integer or a decimal between 5-8, such as 6-7, 6-7.5, 6- An integer or fraction between 8,6.5-7, 6.5-7.5, 6.5-8, 7-8 or 7.5-8.
  • the conjugate is:
  • A2 is trastuzumab, and ⁇ is selected from an integer or a decimal between 1-10; preferably, ⁇ is selected from an integer or a decimal between 5-8, such as 6-7, 6-7.5, 6- An integer or fraction between 8,6.5-7, 6.5-7.5, 6.5-8, 7-8 or 7.5-8.
  • the conjugate is:
  • A3 is pertuzumab, and ⁇ is selected from an integer or a decimal between 1-10; preferably, ⁇ is selected from an integer or a decimal between 5-8, such as 6-7, 6-7.5, 6- An integer or fraction between 8,6.5-7, 6.5-7.5, 6.5-8, 7-8 or 7.5-8.
  • the conjugate is:
  • A3 is pertuzumab, and ⁇ is selected from an integer or a decimal between 1-10; preferably, ⁇ is selected from an integer or a decimal between 5-8, such as 6-7, 6-7.5, 6- An integer or fraction between 8,6.5-7, 6.5-7.5, 6.5-8, 7-8 or 7.5-8.
  • the conjugate is:
  • A4 is an M1 antibody, and ⁇ is selected from an integer or a decimal between 1-10; preferably, ⁇ is selected from an integer or a decimal between 5-8, such as 6-7, 6-7.5, 6-8, 6.5 An integer or fraction between -7, 6.5-7.5, 6.5-8, 7-8, or 7.5-8.
  • the conjugate is:
  • A4 is an M1 antibody, and ⁇ is selected from an integer or a decimal between 1-10; preferably, ⁇ is selected from an integer or a decimal between 5-8, such as 6-7, 6-7.5, 6-8, 6.5 An integer or fraction between -7, 6.5-7.5, 6.5-8, 7-8, or 7.5-8.
  • the conjugate is:
  • A5 is an M2 antibody
  • ⁇ is selected from an integer or a decimal between 1-10; preferably, ⁇ is selected from an integer or a decimal between 5-8, such as 6-7, 6-7.5, 6-8, 6.5 An integer or fraction between -7, 6.5-7.5, 6.5-8, 7-8, or 7.5-8.
  • the conjugate is:
  • A5 is an M2 antibody
  • ⁇ is selected from an integer or a decimal between 1-10; preferably, ⁇ is selected from an integer or a decimal between 5-8, such as 6-7, 6-7.5, 6-8, 6.5 An integer or fraction between -7, 6.5-7.5, 6.5-8, 7-8, or 7.5-8.
  • the conjugate is:
  • A6 is an M3 antibody, and ⁇ is selected from an integer or a decimal between 1-10; preferably, ⁇ is selected from an integer or a decimal between 5-8, such as 6-7, 6-7.5, 6-8, 6.5 An integer or fraction between -7, 6.5-7.5, 6.5-8, 7-8, or 7.5-8.
  • the conjugate is:
  • A6 is an M3 antibody, and ⁇ is selected from an integer or a decimal between 1-10; preferably, ⁇ is selected from an integer or a decimal between 5-8, such as 6-7, 6-7.5, 6-8, 6.5 An integer or fraction between -7, 6.5-7.5, 6.5-8, 7-8, or 7.5-8.
  • the present disclosure provides a method of preparing a conjugate of the second aspect, comprising the step of coupling a linker of a compound of formula (I) with a reactive moiety of a targeting moiety.
  • the method comprises opening a disulfide bond of the targeting moiety using a reducing agent (eg, TCEP) to provide a thiol group.
  • a reducing agent eg, TCEP
  • the method comprises the step of forming a linker of a compound of formula (I) with a thiol group of a targeting moiety to form a C-S bond.
  • the targeting moiety is a monoclonal antibody against Her 2 (eg, trastuzumab, Pertuzumab) or a monoclonal antibody against Trop-2 (eg, Sacituzumab, M1, M2 or M3), or an active fragment or variant thereof.
  • Her 2 eg, trastuzumab, Pertuzumab
  • Trop-2 eg, Sacituzumab, M1, M2 or M3
  • the ratio of the amount of the targeting moiety to the substance of the compound of formula (I) is 1: (1-20); preferably, the coupling is carried out in water and/or an organic solvent;
  • the organic solvent is selected from the group consisting of N,N-dimethylformamide, dimethyl sulfoxide, N-methylpyrrolidone, nitriles (such as acetonitrile), alcohols (such as methanol, ethanol), and any combination thereof.
  • the method further comprises the step of purifying the coupled product; preferably, by chromatography (eg, ion exchange chromatography, hydrophobic chromatography, reversed phase chromatography, or affinity chromatography) One or more) purified the coupled product.
  • chromatography eg, ion exchange chromatography, hydrophobic chromatography, reversed phase chromatography, or affinity chromatography
  • the present disclosure provides a pharmaceutical composition
  • a pharmaceutical composition comprising the compound of the first aspect of the present disclosure or a pharmaceutically acceptable salt thereof, or the conjugate of the second aspect, and one or A variety of pharmaceutical excipients.
  • the present disclosure provides the compound of the first aspect, or a pharmaceutically acceptable salt thereof, or the conjugate of the second aspect, for the preparation of a medicament for treating a disease associated with abnormal cell activity (eg, a cancer disease) Use in.
  • a disease associated with abnormal cell activity eg, a cancer disease
  • the cancer disease is a solid tumor or a non-solid tumor, such as selected from the group consisting of esophageal cancer (eg, esophageal adenocarcinoma and esophageal squamous cell carcinoma), brain tumor, lung cancer (eg, small cell lung cancer, and non-small) Cellular lung cancer), squamous cell carcinoma, bladder cancer, stomach cancer, ovarian cancer, peritoneal cancer, pancreatic cancer, breast cancer, head and neck cancer, cervical cancer, endometrial cancer, colorectal cancer, liver cancer, kidney cancer, non Hodgkin's lymphoma, central nervous system tumors (eg, glioma, glioblastoma multiforme, glioma or sarcoma), prostate cancer, and thyroid cancer.
  • esophageal cancer eg, esophageal adenocarcinoma and esophageal squamous cell carcinoma
  • brain tumor eg,
  • the present disclosure provides the compound of the first aspect, or a pharmaceutically acceptable salt thereof, or the conjugate or pharmaceutical composition of the second aspect, for use in the treatment of a disease associated with abnormal cellular activity (eg, cancer) Use in disease).
  • a disease associated with abnormal cellular activity eg, cancer
  • the present disclosure provides a method of treating a disease associated with abnormal cellular activity, such as a cancer disease, comprising providing a compound of the first aspect, or a pharmaceutically acceptable thereof, to an effective dosage of an individual in need thereof A salt or a conjugate or pharmaceutical composition of the second aspect.
  • the medicinal excipient refers to an excipient and an additive used in the production of a drug and a formulation, and refers to a reasonable evaluation of safety in addition to the active ingredient, and is included in the drug.
  • the substance in the preparation In addition to prototyping, acting as a carrier and improving stability, pharmaceutical excipients also have important functions such as solubilization, solubilization, and controlled release, which are important components that may affect the quality, safety and effectiveness of drugs. According to its source, it can be divided into natural materials, semi-synthetic materials and total synthetic materials.
  • solvent propellant
  • solubilizer cosolvent
  • emulsifier colorant
  • binder disintegrant
  • filler filler
  • lubricant wetting agent
  • osmotic pressure regulator stabilizer
  • Glidants flavoring agents, preservatives, suspending agents, coating materials, fragrances, anti-adhesives, antioxidants, chelating agents, penetration enhancers, pH adjusters, buffers, plasticizers, surface active agents Agent, foaming agent, antifoaming agent, thickener, inclusion agent, moisturizer, absorbent, diluent, flocculant and deflocculant, filter aid, release retardant, etc.
  • solvent propellant
  • solubilizer cosolvent
  • emulsifier colorant
  • binder disintegrant
  • filler filler
  • lubricant wetting agent
  • osmotic pressure regulator stabilizer
  • Glidants osmotic pressure regulator
  • flavoring agents preservatives
  • suspending agents coating materials
  • fragrances anti
  • the pharmaceutical composition can be formulated into various suitable dosage forms depending on the route of administration. For example, tablets, capsules, granules, oral solutions, oral suspensions, oral emulsions, powders, elixirs, syrups, injections, suppositories, ointments, creams, pastes, ophthalmic preparations, pills, implants Agents, aerosols, powders, sprays, and the like.
  • the pharmaceutical composition or a suitable dosage form may contain 0.01 mg to 1000 mg of the compound of the present disclosure or a pharmaceutically acceptable salt or conjugate thereof, suitably containing 0.1 mg to 800 mg, preferably 0.5-500 mg, preferably It contains 0.5 to 350 mg, particularly preferably 1 to 250 mg.
  • the pharmaceutical composition can be administered in the form of an injection, including an injection, a sterile powder for injection, and a concentrated solution for injection.
  • carriers and solvents which can be used include water, Ringer's solution and isotonic sodium chloride solution.
  • sterile, fixed oils may also be employed as a solvent or suspension medium such as a monoglyceride or a diglyceride.
  • the term "individual” includes human or non-human animals.
  • Exemplary human individuals include a human individual (referred to as a patient) or a normal individual having a disease, such as the disease described herein.
  • non-human animal in the present disclosure includes all vertebrate animals, such as non-mammals (eg, birds, amphibians, reptiles) and mammals, such as non-human primates, domestic animals, and/or domesticated animals (eg, sheep, Dogs, cats, cows, pigs, etc.).
  • the term "effective amount” refers to the amount of a compound that, after administration, will relieve to some extent one or more symptoms of the condition being treated.
  • the term "conjugate” refers to a substance obtained by linking a biologically active molecule to a targeting moiety.
  • the bioactive molecule is linked to the targeting moiety via a linker.
  • the linker is capable of cleavage in a particular environment (e.g., an intracellular low pH environment) or a specific action (e.g., the action of a lysosomal protease) to separate the biologically active molecule from the targeting moiety.
  • the linker comprises a cleavable or non-cleavable unit, such as a peptide or a disulfide bond.
  • the bioactive molecule is linked directly to the targeting moiety by a covalent bond that is capable of cleavage under a particular environment or action, thereby separating the biologically active molecule from the targeting moiety.
  • biologically active and “biologically active molecule” refer to a substance that inhibits or prevents the function of a cell and/or causes cell death or destruction.
  • biological activity in the conjugate is a molecule having antitumor biological activity.
  • radioisotopes such as At 211 , I 131 , I 125 , Y 90 , Re 186 , Re 188 , Sm 153 , Bi 212 , P 32 , Pb 212 and Lu radioisotopes; metal complexes such as metal platinum complexes , metal gold complexes, oxaliplatin, etc.; glycopeptide antibiotics, such as bleomycin, pingyangmycin; DNA topoisomerase inhibitors, such as topoisomerase I inhibitors, camptothecin, hydroxyl Alkaloid, 9-aminocamptothecin, SN-38, irinotecan, topotecan, belocommide, rupeticon, topoisomerase II inhibitor, actinomycin D, doxorubicin, Resorcin, doxymethine, daunorubicin, mitoxantrone, podophyllotoxin, etoposide, etc.; interfere with DNA
  • small molecule refers to a small molecule drug having biological activity.
  • linker refers to a fragment that links a biologically active molecule to a targeting moiety.
  • targeting moiety refers to a moiety in a conjugate that is capable of specifically binding to a target (or portion of a target) of a cell surface.
  • the conjugate can be delivered to a particular cell population by interaction of the targeting moiety with the target.
  • the conjugate when the targeting moiety in the conjugate is an antibody, the conjugate may be referred to as a "drug-antibody conjugate.”
  • drug-antibody conjugate and “immunoconjugate” are used interchangeably.
  • antibody in its broadest sense and includes intact monoclonal antibodies, polyclonal antibodies, and multispecific antibodies (eg, bispecific antibodies) formed from at least two intact antibodies, as long as they have The biological activity required.
  • antibody and “immunoglobulin” are used interchangeably.
  • the term "monoclonal antibody” refers to an antibody from a population of substantially homogeneous antibodies, ie, the individual antibodies comprising the cluster are identical except for a small number of natural mutations that may be present.
  • Monoclonal antibodies have high specificity for one determinant (epitope) of the antigen, while polyclonal antibodies relative thereto contain different antibodies for different determinants (epitopes).
  • monoclonal antibodies have the advantage of being free from contamination by other antibodies during synthesis.
  • the modifier "monoclonal” as used herein means that the antibody is characterized by a substantially homogeneous population of antibodies and is not to be construed as being prepared by a particular method.
  • the monoclonal antibody also specifically includes a chimeric antibody, ie, a portion of the heavy and/or light chain is identical or homologous to a certain, certain or a subset of antibodies, and the remainder is One, another or another subclass of antibodies are identical or homologous as long as they have the desired biological activity (see, for example, US 4,816,567; and Morrison et al., 1984, PNAS, 81:6851-6855).
  • Chimeric antibodies useful in the present disclosure include primatized antibodies comprising variable region antigen binding sequences from non-human primates (e.g., ancient monkeys, orangutans, etc.) and human constant region sequences.
  • antibody fragment refers to a portion of an antibody, preferably an antigen binding or variable region.
  • antibody fragments include Fab, Fab', F(ab') 2 , Fd, Fv, dAb and complementarity determining region fragments, diabodies, linear antibodies and single chain antibody molecules.
  • bispecific antibody is also referred to as "bifunctional antibody conjugate” and refers to a conjugate formed by a first antibody (fragment) and a second antibody (fragment) by a coupling arm, the conjugate The activity of the respective antibodies is retained, so they are bifunctional and bispecific.
  • multispecific antibody includes, for example, trispecific antibodies and tetraspecific antibodies, the former being antibodies having three different antigen binding specificities and the latter being antibodies having four different antigen binding specificities.
  • the term "intact antibody” refers to an antibody comprising an antigen binding variable region and a light chain constant region (CL), a heavy chain constant region (CH1, CH2, and CH3).
  • the constant region can be a native sequence (eg, a human native constant region sequence) or an amino acid sequence variant thereof.
  • An intact antibody is preferably an intact antibody having one or more effector functions.
  • the term "Probody” is a modified antibody comprising an antibody or an antibody fragment that specifically binds to its target and is capable of coupling to a masking group, wherein the masking group refers to an antibody or antibody fragment thereof
  • the cleavage constant of the binding ability of the target is at least 100-fold or 1000-fold, or 10,000-fold greater than the cleavage constant of the binding ability of the antibody or antibody fragment without the coupling masking group to its target.
  • a "humanized" form of a non-human (eg, murine) antibody refers to a chimeric antibody comprising a minimal amount of non-human immunoglobulin sequences.
  • Most humanized antibodies are human receptors.
  • the hypervariable region residues of immunoglobulins are replaced by non-humans (eg, mice, rats, rabbits, or non-human primates) with the desired specificity, affinity, and function. Hypervariable region residues (donor antibodies).
  • the framework region (FR) residues of the human immunoglobulin are also replaced with non-human residues.
  • the humanized antibody may also comprise residues that are not found in the recipient antibody or in the donor antibody. These modifications are intended to further optimize the performance of the antibody.
  • Humanized antibodies generally comprise at least one, usually two variable regions, wherein all or nearly all of the hypervanable loops correspond to non-human immunoglobulins, while FR is completely or almost entirely human immunoglobulin.
  • a humanized antibody can also comprise at least a portion of an immunoglobulin constant region (Fc, typically a human immunoglobulin Fc).
  • Fc immunoglobulin constant region
  • Intact antibodies can be divided into different "classes” based on the amino acid sequence of the heavy chain constant region.
  • the main five classes are IgA, IgD, IgE, IgG and IgM, several of which can also be divided into different "subclasses” (isotypes), such as IgG1, IgG2, IgG3, IgG4, IgA1 and IgA2.
  • the heavy chain constant regions of different classes of antibodies are called ⁇ , ⁇ , ⁇ , ⁇ , and ⁇ , respectively.
  • Subunit structures and three-dimensional configurations of different classes of immunoglobulins are well known in the art.
  • amino acid substitution in an antibody is substituted by an L-amino acid in most cases, it is not limited thereto.
  • one or more D-amino acids can be included in the antibody peptide chain. Peptides comprising D-amino acids are more stable and less susceptible to degradation in the oral, intestinal or plasma than peptides comprising only L-amino acids.
  • the monoclonal antibodies used in the present disclosure can be produced by a number of methods.
  • monoclonal antibodies for use in the present disclosure can be obtained by hybridoma methods using a variety of species including cells of mice, hamsters, rats, and humans (see, eg, Kohler et al, 1975, Nature, 256:495).
  • Monoclonal antibodies useful in the present disclosure include, but are not limited to, monoclonal antibodies against Her 2, such as trastuzumab, Pertuzumab, or monoclonal antibodies against Trop-2, such as Sacituzumab (That is, Isactuzumab or hRS7 antibody), M1, M2 or M3.
  • Her 2 such as trastuzumab, Pertuzumab, or monoclonal antibodies against Trop-2, such as Sacituzumab (That is, Isactuzumab or hRS7 antibody), M1, M2 or M3.
  • the target of the targeting moiety A is selected from the group consisting of: epidermal growth factor, Trop-2, CD37, HER2, CD70, EGFRvIII, Mesothelin, Folate eceoptor1, Mucin 1, CD138, CD20, CD19, CD30, SLTRK6, Nectin 4, Tissue factor, Mucin16, Endothelinreceoptor, STEAP1, SLC39A6, Guanylylcyclase C, PSMA, CCD79b, CD22, Sodium phosphate cotransporter 2B, GPNMB, Trophoblast glycoprotein, AGS-16, EGFR, CD33, CD66e, CD74, CD56 , PD-L1, TACSTD2, DR5, E16, STEAP1, 0772P, MPF, Napi3b, Sema5b, PSCA hlg, ETBR, MSG783, STEAP2, TrpM4, CRIPTO, CD21, CD79b, FcR
  • the target of the targeting moiety A is selected from the group consisting of: an RGD peptide that recognizes a cell surface integrin receptor; a growth factor that recognizes a cell surface growth factor receptor such as EGF, PDGF, VEGF; A peptide capable of recognizing functional cell surface plasminogen activator, bombesin, bradykinin, somatostatin, prostate specific membrane antigen receptor.
  • the target of the targeting moiety A is selected from the group consisting of: a CD40 ligand, a CD30 ligand, an OX40 ligand, a PD-1 ligand, an ErbB ligand, a Her2 ligand, a TACSTD2 ligand, and DR5 ligand.
  • the targeting moiety A is a monoclonal antibody against Her 2 , such as trastuzumab, Pertuzumab; or the targeting moiety is anti-Trop- A monoclonal antibody of 2, such as Sacituzumab, M1, M2 or M3.
  • the targeting moiety is trastuzumab or Pertuzumab.
  • Trastuzumab is a monoclonal antibody against Her 2 whose amino acid sequence is known to those skilled in the art, the schematic sequence of which can be found, for example, CN 103319599.
  • the heavy chain distal Lys of the targeting moiety is readily deleted but does not affect biological activity, see Dick, L. W. et al, Biotechnol. Bioeng., 100: 1132-1143.
  • the targeting moiety is a monoclonal antibody against Trop-2, such as a Sacituzumab, M1, M2 or M3 heavy chain last Lys deletion, for example, the targeting moiety is a monoclonal antibody against Her 2 , such as a song. Tombuzumab, Pertuzumab, is missing at the last heavy chain of Lytuzumab.
  • Exemplary heavy chain sequences and light chain sequences of trastuzumab can be found, for example, in SEQ ID No.: 17 and SEQ ID No.: 18.
  • the heavy chain sequence and the light chain sequence of trastuzumab they are described using the sequences shown in SEQ ID No.: 17 and SEQ ID No.: 18, respectively.
  • Exemplary heavy chain and light chain sequences of pertuzumab can be found in SEQ ID No.: 16 and SEQ ID No.: 15 of US7560111.
  • the targeting moiety anti-Trop-2 antibody is RS7 (i.e., the present disclosure Sacituzumab) as described in U.S. Patent No. 7,517,964; and hRS7 (i.e., the present disclosure Sacituzumab) as described in US 2012/0237518.
  • Anti-Trop-2 antibodies useful in the present disclosure can also be screened by methods for designing, constructing, and constructing antibody libraries displaying antibodies, as disclosed in CN103476941A, or by Sorrento Therapeutics, Inc. The library was obtained by screening.
  • the heavy chain sequence and the light chain amino acid sequence of Sacituzumab mAb can be found, for example, in SEQ ID No.: 19 and SEQ ID No.: 20, respectively.
  • the K (or lys) at the end of the heavy chain is readily deleted, but this deletion does not affect biological activity, see Dick, L. W. et al, Biotechnol. Bioeng., 100: 1132-1143.
  • ErbB2 and Her2/neu are used interchangeably, both of which represent the native sequence human HER2 protein (Genebank Accession No.: X03363, see, eg, Semba et al, 1985, PNAS, 82: 6497-6501; and Yamamoto) Et al., 1986, Nature, 319: 230-234) and functional derivatives thereof, such as amino acid sequence variants.
  • ErbB2 represents the gene encoding human Her2, and neu represents the gene encoding rat pl85neu.
  • the compounds or conjugates of the present disclosure are capable of inhibiting or killing cells expressing the ErbB2 receptor, such as breast cancer cells, ovarian cancer cells, gastric cancer cells, endometrial cancer cells, salivary gland cancer cells, lung cancer cells, Renal cancer cells, colon cancer cells, thyroid cancer cells, pancreatic cancer cells, bladder cancer cells or liver cancer cells.
  • cells expressing the ErbB2 receptor such as breast cancer cells, ovarian cancer cells, gastric cancer cells, endometrial cancer cells, salivary gland cancer cells, lung cancer cells, Renal cancer cells, colon cancer cells, thyroid cancer cells, pancreatic cancer cells, bladder cancer cells or liver cancer cells.
  • Trop-2 or TROP2 refers to human trophoblast cell surface antigens 2, also known as TACSTD2, M1S1, GA733-1, EGP-1, which are composed of many human tumors.
  • Cell surface receptors expressed by cells such as breast cancer, colorectal cancer, lung cancer, pancreatic cancer, ovarian cancer, prostate cancer, cervical cancer.
  • a compound or conjugate of the present disclosure is capable of inhibiting or killing a cell that expresses a TROP2 receptor, such as a breast cancer cell, a colorectal cancer cell, a lung cancer cell, a pancreatic cancer cell, an ovarian cancer cell, a prostate cancer cell, or Cervical cancer cells.
  • conjugate present in the present invention The specific manner of linking the thiol group to the linker in the antibody when the targeting moiety is an antibody.
  • C 1-6 alkyl means a straight or branched alkyl group having 1 to 6 carbon atoms, and includes, for example, "C 1-4 alkyl", "C 1-3 alkyl”. Etc. Specific examples include, but are not limited to, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, 2-methyl Butyl, neopentyl, 1-ethylpropyl, n-hexyl, isohexyl, 3-methylpentyl, 2-methylpentyl, 1-methylpentyl, 3,3-dimethylbutyl Base, 2,2-dimethylbutyl, 1,1-dimethylbutyl, 1,2-dimethylbutyl, 1,3-dimethylbutyl, 2,3-dimethylbutyl Base, 2-e
  • C 2-6 alkenyl refers to a straight-chain, branched or cyclic alkenyl group containing at least one double bond and having 2 to 6 carbon atoms, including, for example, "C 2-4 alkenyl”. "Wait.
  • Examples thereof include, but are not limited to, vinyl, 1-propenyl, 2-propenyl, 1-butenyl, 2-butenyl, 1,3-butadienyl, 1-pentenyl, 2-pentyl Alkenyl, 3-pentenyl, 1,3-pentadienyl, 1,4-pentadienyl, 1-hexenyl, 2-hexenyl, 3-hexenyl, 1,4-hexyl Dienyl, cyclopentenyl, 1,3-cyclopentadienyl, cyclohexenyl, 1,4-cyclohexadienyl and the like.
  • C 2-6 alkynyl refers to a straight or branched alkynyl group containing at least one triple bond and having 2 to 6 carbon atoms, including, for example, "C 2-4 alkynyl” and the like. Examples thereof include, but are not limited to, ethynyl, propynyl, 2-butynyl, 2-pentynyl, 3-pentynyl, 4-methyl-2-pentynyl, 2-hexynyl, 3 - hexynyl, 5-methyl-2-hexynyl and the like.
  • halogen includes fluoro, chloro, bromo, iodo.
  • 3-8 membered cycloalkyl or “C 3-8 cycloalkyl” refers to a saturated cyclic alkyl group containing from 3 to 8 carbon atoms, including, for example, “3-6 membered cycloalkyl”", 4-6 membered cycloalkyl", “5-7 membered cycloalkyl” or “5-6 membered cycloalkyl” and the like. Specific examples include, but are not limited to, cyclopropyl, cyclobutane, cyclopentyl, cyclohexane, cycloheptyl, cyclooctyl, and the like.
  • C1-6 alkoxy refers to a group having a C1-6 alkyl-O- structure wherein C1-6 alkyl is as defined above. Specific examples include, but are not limited to, methoxy, ethoxy, propoxy, isopropoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, tert-butoxy, pentoxide Base, hexyloxy, and the like.
  • 3-8 membered heteroheterocyclyl refers to a cyclic group containing from 3 to 8 ring atoms, at least one of which is a hetero atom such as a nitrogen atom, an oxygen atom or a sulfur atom.
  • a ring atom eg, a carbon atom, a nitrogen atom, or a sulfur atom
  • oxo e.g., a carbon atom, a nitrogen atom, or a sulfur atom
  • the "3-8 membered aliphatic heterocyclic group” includes, for example, “3-8 membered nitrogen-containing aliphatic heterocyclic group”, “3-8 membered oxyalicyclic group”, “3-6 membered aliphatic heterocyclic group”, “ 3-6 yuan oxygen-containing heterocyclic group”, “4-7-membered aliphatic heterocyclic group”, “4-6-membered aliphatic heterocyclic group”, “5-7-membered aliphatic heterocyclic group”, “5-6 yuan” "Heteroheterocyclyl", “5-6 membered nitrogen-containing heterocyclic group”, including but not limited to oxiranyl, oxocyclobutane, pyrrolidinyl, tetrahydrofuranyl, piperidinyl, piperazinyl , tetrahydropyranyl, homopiperazinyl and the like.
  • 6-12 membered spirocyclyl refers to a cyclic structure containing 6 to 12 ring-forming carbon atoms formed by the sharing of one carbon atom by two or more cyclic structures.
  • the carbon atoms in the cyclic structure can be replaced by oxo.
  • the "6-12 membered spiro group” includes, for example, “6-11 membered spiro group”, “6-10 membered spiro group”, “7-10 membered spiro group”, and “7-9 membered spiro group”", 7-8 yuan spiro ring base”, “9-10 yuan spiro ring base”, “3-10 yuan spiro ring base” and so on. Specific examples include, but are not limited to: Wait.
  • 6-12 membered bridged ring group refers to a ring of 6 to 12 ring carbon atoms formed by two or more ring structures sharing two non-adjacent carbon atoms with each other. structure.
  • the carbon atoms in the cyclic structure can be replaced by oxo.
  • "6-12 Yuan Bridged Ring Group” includes, for example, “6-11 Yuan Bridged Ring Group”, “5-10 Yuan Bridged Ring Group”, “7-10 Yuan Bridged Ring Group”, “7-9 Yuan Bridged Ring Group” , "7-8 yuan bridge ring base”, “9-10 yuan bridge ring base”, “3-10 yuan bridge ring base” and so on. Specific examples include, but are not limited to: Wait.
  • 6-12 membered fused ring group refers to a cyclic structure having 6 to 12 ring carbon atoms formed by two or more ring structures sharing two adjacent atoms with each other. , including “6-11 membered fused ring group”, “6-10 membered fused ring group”, “6-8 membered fused ring group”, “10-12 membered fused ring group”, “7-10 membered fused ring group””. Examples include, but are not limited to: Wait.
  • the term "6-12 membered spiroheterocyclyl” refers to a ring atom formed by the sharing of one ring atom with two or more cyclic structures, wherein at least one of the ring atoms is A cyclic structure of a hetero atom such as a nitrogen atom, an oxygen atom or a sulfur atom.
  • a ring atom eg, a carbon atom, a nitrogen atom, or a sulfur atom
  • oxo e.g, a carbon atom, a nitrogen atom, or a sulfur atom
  • the "6-12 membered spiroheterocyclyl” includes, for example, “6-11 membered spiroheterocyclyl", “5-10 membered spiroheterocyclyl”, “7-11 membered spiroheterocyclyl”, and “7-10"Spiroheterocyclyl”,”7-9 membered spiroheterocyclyl", “7-8 membered spiroheterocyclyl”, “9-10 membered spiroheterocyclyl", “3-10 membered spiroheterocyclyl”, etc. . Specific examples include, but are not limited to: Wait.
  • the term "6-12 membered bridged heterocyclyl” refers to a group of 6 to 12 ring atoms formed by two or more ring structures sharing two non-adjacent ring atoms with each other (wherein The ring structure in which at least one ring atom is a hetero atom such as a nitrogen atom, an oxygen atom or a sulfur atom.
  • a ring atom eg, a carbon atom, a nitrogen atom, or a sulfur atom
  • oxo e.g, a carbon atom, a nitrogen atom, or a sulfur atom
  • the "6-12 membered bridged heterocyclic group” includes, for example, "6-11 membered bridged heterocyclic group", “6-9 membered bridged heterocyclic group”, “6-10 membered bridged heterocyclic group”, and “7-10 member” Bridged heterocyclic group”, “7-9 membered bridged heterocyclic group”, “7-8 membered bridged heterocyclic group”, “8-membered bridged heterocyclic group”, “9-10 membered bridged heterocyclic group", "3 -10-membered bridge heterocyclic group” and the like. Specific examples include, but are not limited to: Wait.
  • the term "6-12 membered fused heterocyclyl” refers to a group of 6 to 12 ring atoms formed by two or more ring structures sharing two adjacent atoms with each other (at least one of which The ring atom is a cyclic structure of a hetero atom such as a nitrogen atom, an oxygen atom or a sulfur atom.
  • a ring atom eg, a carbon atom, a nitrogen atom, or a sulfur atom
  • oxo e.g, a carbon atom, a nitrogen atom, or a sulfur atom
  • the "6-12 membered fused heterocyclic group” includes, for example, "6-11 membered fused heterocyclic group", “5-10 membered fused heterocyclic group”, “7-10 membered fused heterocyclic group”, and "3-10 member”. "Heteroheterocyclic group”, “3-10 membered nitrogen-containing fused heterocyclic group”, “9-10 membered fused heterocyclic group”, “9-10 membered nitrogen-containing fused heterocyclic group”, "6-12 yuan oxygenated” A fused heterocyclic group” and the like.
  • Specific examples include, but are not limited to, tetrahydroimidazo[4,5-c]pyridyl, 3,4-dihydroquinazolinyl, 1,2-dihydroquinoxalinyl, benzo[d][1 , 3]dioxolyl, 1,3-dihydroisobenzofuranyl, 4H-1,3-benzoxazinyl, 4,6-dihydro-1H-furo[3,4 -d]imidazolyl, 3a,4,6,6a-tetrahydro-1H-furo[3,4-d]imidazolyl, 4,6-dihydro-1H-thieno[3,4-d]imidazole , 4,6-dihydro-1H-pyrrolo[3,4-d]imidazolyl, benzimidazolylalkyl, octahydro-benzo[d]imidazolyl, decahydroquinolyl, hexahydr
  • aryl refers to a monocyclic or polycyclic hydrocarbon group having an aromatic character, such as a 6-20 membered aryl group, a 6-10 membered aryl group, a 5-8 membered aryl group, and the like. Specific examples include, but are not limited to, phenyl, naphthyl, anthracenyl, phenanthryl, and the like.
  • the "6-20 membered aryl group” means an aryl group having 6 to 20 ring atoms.
  • heteroaryl refers to a cyclic group having an aromatic character wherein at least one of the ring atoms is a hetero atom such as a nitrogen atom, an oxygen atom or a sulfur atom.
  • a ring atom eg, a carbon atom, a nitrogen atom, or a sulfur atom
  • oxo a ring atom in the cyclic structure
  • Specific examples include, but are not limited to, a 5-10 membered heteroaryl group, a 5-10 membered nitrogen-containing heteroaryl group, a 6-10 membered oxygen-containing heteroaryl group, a 6-8 membered nitrogen-containing heteroaryl group, and a 5-8 membered oxygen group.
  • a heteroaryl group or the like such as furyl, thienyl, pyrrolyl, thiazolyl, isothiazolyl, thiadiazolyl, oxazolyl, isoxazolyl, oxadiazolyl, imidazolyl, pyrazolyl, 1, 2,3-Triazolyl, 1,2,4-triazolyl, 1,2,3-oxadiazolyl, 1,2,4-oxadiazolyl, 1,2,5-oxadiazolyl 1,3,4-oxadiazolyl, pyridyl, 2-pyridinone, 4-pyridinone, pyrimidinyl, 1,4-dioxadienyl, 2H-1,2-oxa Azinyl, 4H-1,2-oxazinyl, 6H-1,2-oxazinyl, 4H-1,3-oxazinyl, 6H-1,3-oxazinyl, 4H-1,4- Azinyl,
  • the present disclosure obtains a novel class of biologically active molecular conjugates by improving the manner in which the drug is coupled to the targeting moiety in the ADC or SMDC.
  • the bioactive molecule conjugate is obtained by nucleophilic substitution reaction of a heteroaromatic ring on an ADC drug linker with a free sulfhydryl group in an antibody molecule.
  • the conjugate obtained by the above coupling method can achieve at least one of the following technical effects:
  • the conjugate of the conjugate can reach 5-8;
  • the coupling efficiency can reach 90%
  • the conjugate obtained according to the above coupling method can effectively improve the stability of the drug molecule in the circulation, and reduce the detachment of the non-target drug in the non-target cell;
  • the conjugate can also increase the effective release of the bioactive molecule in the cell to achieve the purpose of synergistic effect and attenuation;
  • the conjugate has a good therapeutic effect on a tumor animal model.
  • the coupling mode described in the present disclosure has a high application range and can be widely used for coupling biologically active molecules with antibodies or targeting small molecule ligands.
  • Figure 1 shows the TIC diagram (total ion chromatogram) of BT001002.
  • Figure 2 is a BT001002 coupled light chain deconvolution diagram.
  • Figure 3 is a BT001002 coupled heavy chain deconvolution diagram.
  • Figure 4 is a TIC diagram (total ion chromatogram) of BT001004.
  • Figure 5 is a BT001004 coupled light chain deconvolution diagram.
  • Figure 6 is a BT001004 coupled heavy chain deconvolution plot.
  • Figure 7 is an SEC chromatogram of BT001002.
  • Figure 8 is a molecular weight Marker SEC chromatogram of BT001002.
  • Figure 9 is an SEC chromatogram of BT001004.
  • Figure 10 is a BT001012 coupled light chain deconvolution diagram.
  • Figure 11 is a BT001012 coupled heavy chain deconvolution diagram.
  • Figure 12 is a BT001013 coupled light chain deconvolution diagram.
  • Figure 13 is a BT001013 coupled heavy chain deconvolution plot.
  • Figure 14 is a BT001018 coupled light chain deconvolution diagram.
  • Figure 15 is a BT001018 coupled heavy chain deconvolution plot.
  • Figure 16 is a BT001021 coupled light chain deconvolution diagram.
  • Figure 17 is a BT001021 coupled heavy chain deconvolution plot.
  • Figure 18 is a BT001023 coupled light chain deconvolution diagram.
  • Figure 19 is a BT001023 coupled heavy chain deconvolution plot.
  • Figure 20 is a BT001040 coupled light chain deconvolution diagram.
  • Figure 21 is a BT001040 coupled heavy chain deconvolution plot.
  • Figure 22 is a BT001041 coupled light chain deconvolution diagram.
  • Figure 23 is a BT001041 coupled heavy chain deconvolution diagram.
  • Figure 24 is a BT001042 coupled light chain deconvolution diagram.
  • Figure 25 is a BT001042 coupled heavy chain deconvolution plot.
  • Figure 26 is a BT001043 coupled light chain deconvolution diagram.
  • Figure 27 is a BT001043 coupled heavy chain deconvolution plot.
  • Figure 28 is a BT001044 coupled light chain deconvolution diagram.
  • Figure 29 is a BT001044 coupled heavy chain deconvolution diagram.
  • Figure 30 is a BT001046 coupled light chain deconvolution plot.
  • Figure 31 is a BT001046 coupled heavy chain deconvolution plot.
  • Figure 32 is a BT001047 coupled light chain deconvolution diagram.
  • Figure 33 is a BT001047 coupled heavy chain deconvolution plot.
  • Figure 34 is an SEC chromatogram of BT001012.
  • Figure 35 shows the SEC chromatogram of BT001013.
  • Figure 36 is a SEC chromatogram of BT001018.
  • Figure 37 is the SEC chromatogram of BT001021.
  • Figure 38 is an SEC chromatogram of BT001023.
  • Figure 39 is an SEC chromatogram of BT001042.
  • Figure 40 is an SEC chromatogram of BT001043.
  • Figure 41 is an SEC chromatogram of BT001044.
  • Figure 42 is an SEC chromatogram of BT001046.
  • Figure 43 is a SEC chromatogram of BT001047.
  • Fig. 44 shows the growth of tumor volume in each group of mice in the NCI-N87 human gastric cancer model.
  • Figure 45 Changes in body weight of mice in each group of NCI-N87 human gastric cancer models.
  • Figure 46 Growth of tumor volume in each group of mice in the HCC1806 human breast cancer model.
  • Figure 47A shows the growth of tumor volume in each group of mice in the HCC827 human non-small cell lung cancer xenograft model.
  • Figure 47B Changes in body weight of mice in each group of HCC827 human non-small cell lung cancer xenograft models.
  • Figure 48A Growth of tumor volume in each group of mice in the NCI-N87 human gastric cancer xenograft model.
  • Figure 48B Changes in body weight of mice in each group of NCI-N87 human gastric cancer xenograft models.
  • Figure 49A Growth of tumor volume in mice of each group in the MDA-MB-231 human breast cancer-bearing mouse model.
  • Figure 49B Changes in body weight of mice in each group of MDA-MB-231 human breast cancer-bearing mice model.
  • the nuclear magnetic resonance ( 1 H NMR) measuring instrument was performed using a Bruker 400 MHz nuclear magnetic resonance apparatus; the solvent was determined to be deuterated methanol (CD 3 OD), deuterated chloroform (CDCl 3 ) or hexamethyl dimethyl sulfoxide (DMSO-d 6). ); the internal standard substance is tetramethylsilane (TMS).
  • NMR nuclear magnetic resonance
  • MS mass spectrometer
  • ESI Agilent 6120B
  • the preparative liquid chromatography method is as follows:
  • Mobile phase A water; mobile phase B: acetonitrile
  • Mobile phase A water; mobile phase B: acetonitrile
  • Mobile phase A water containing 0.1% trifluoroacetic acid
  • mobile phase B acetonitrile
  • Method D Column: Waters SunFire C18 5 ⁇ m 19x250mm
  • Mobile phase A acetonitrile
  • mobile phase B water containing 0.05% formic acid
  • Step 1 (4-((2R,3R)-3-((S)-1-((3R,4S,5S)-4-((S)-2-((S)-2) -(dimethylamino)-3-methylbutyryl)-N,3-dimethylbutyryl)-3-methoxy-5-methylheptanoyl)pyrrolidin-2-yl)-3 Synthesis of tert-butyl ester of -methoxy-2-methylpropionamido)-3-phenylpropionamido)methyl)phenyl)carbamate
  • Step 2 (2S)-N-((3R,4S,5S)-1-((2S)-2-((1R,2R)-3-((1-((4-aminobenzyl))amino)) -1-oxo-3-phenylpropan-2-yl)amino)-1-methoxy-2-methyl-3-propionyl)pyrrolidin-1-yl)-3-methoxy-5
  • Step 2 Synthesis of (S)-(4-((2-amino-3-phenylpropionamido)methyl)phenyl)carbamic acid tert-butyl ester
  • Lithium hydroxide monohydrate (21 mg, 0.51 mmol) was dissolved in water (1 mL) and added to (S)-(4-((2-((9))))) A solution of tert-butyl carbonyl)amino)-3-phenylpropionamido)methyl)phenyl)carbamate (102 mg, 0.17 mmol) in tetrahydrofuran (2 mL). Water (20 mL) was added to the mixture and the mixture was evaporated. The organic phase was combined and the organic layer was washed with brine (30 mL? The desiccating agent was filtered off, and the solvent was evaporated. ESI-MS (m/z): 370.2 [M+H] + .
  • Step 3 (4-((S)-2-((2R,3R)-3-((S)-1-((3R,4S,5S)-4-((S)-3-(methyl) Amino)-3-methylbutyrylamino)-N,3-dimethylbutyrylamino)-3-methoxy-5-methylheptanoyl)pyrrolidin-2-yl)-3-methoxy Synthesis of -2-methylpropionamido)-3-phenylpropionamido)methyl)phenyl)carbamate
  • Step 4 (S)-N-((3R,4S,5S)-1-((S)-2-((1R,2R)-3-((S)-1-((4-aminobenzyl) Amino)-1-oxo-3-phenylpropan-2-yl)amino)-1-methoxy-2-methyl-3-oxopropyl)pyrrolidin-1-yl)-3- Methoxy-5-methyl-1-oxoheptan-4-yl)-2-((S)-2-(dimethylamino)-3-methylbutyrylamino)-N,3- Synthesis of dimethylbutyramide
  • Methanesulfonyl chloride (462 mg, 12.77 mmol, about 70% purity) was added dropwise to a solution of beclotilone hydrochloride (3 g, 6.38 mmol) and triethylamine (2.58 g, 25.54 mmol) in dichloromethane (40 mL). The reaction was carried out for 2 h under the conditions. After suction filtration, the cake was washed with dichloromethane (3 mL)
  • Step 3 (9H-fluoren-9-yl)-methyl-((S)-1-(((S)-1-((4-((tert-butoxycarbonyl))amino)methyl)phenyl) Amino)-1-oxo-5-ureidopentyl-2-yl)amino)-3-methyl-1-oxobutyl-2-yl)-carbamate (compounds 1-5) Synthesis
  • Step 4 (9H-fluoren-9-yl)-methyl-((S)-1-(((S)-1-((4-(aminomethyl)phenyl))amino)-1-oxo Synthesis of 5-5-ureidopentyl-2-yl)amino)-3-methyl-1-oxobutyl-2-yl)-carbamate (Compound 1-6)
  • Trifluoroacetic acid (15 mL) was added to compound 1-5 (3.0 g, 4.29 mmol). The solvent was evaporated to drynessnessnessnessnessnessnessnessnessnessnessnessnessnessnessnessnessnessnessnesssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
  • Step 5 (9H- ⁇ -9-yl)-methyl-((S)-1-(((S)-1-((4-(((R)))) Amino)-3-phenylpropionamido)methyl)phenyl)amino-1-oxo-5-ureidopentyl-2-yl)amino)-3-methyl-1-oxobutyl- Synthesis of 2-yl)-carbamate (Compound 1-7)
  • Boc-D-phenylalanine (1.1 g, 4.2 mmol), trifluoroacetate salt of compound 1-6 (3.0 g, 4.2 mmol) was dissolved in N,N-dimethylformamide (40 mL) , cooling to 0 ° C, then adding 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (1.2 g, 6.3 mmol), 1-hydroxybenzotriazole ( 0.9 g, 6.3 mmol), N-methylmorpholine (1.7 g, 16.8 mmol), and the reaction system was stirred for 1.0 h. The reaction mixture was poured into ice water (400 mL). ESI-MS (m/z): 848.4 [M+H] + .
  • Step 6 (9H- ⁇ -9-yl)-methyl-((S)-1-(((S)-1-((4-((())))) Amido)methyl)phenyl)amino)-1-oxo-5-ureidopentyl-2-yl)amino)-3-methyl-1-oxobutyl-2-yl)-aminomethyl
  • Step 7 (9H- ⁇ -9-yl)-methyl-((S)-1-(((S)-1-((4-((())))) 3-((S)-1-((3R,4S,5S)-4-((S)-2-((S)-2-(dimethylamino)-3-butanamide)-N, 3-dimethylbutyryl)-3-methoxy-5-methylheptanoyl)pyrrol-2-yl)-3-methoxy-2-methylpropionamido)-3-phenylpropanamide Methyl)phenyl)amino)-1-oxo-5-ureidopentan-2-yl)amino)-3-methyl-1-oxobutan-2-yl)carbamate (compound) Synthesis of 1-9)
  • Step 8 (S)-2-((S)-2-Amino-3-butyrylamino)-N-(4-((S)-2-((2R,3R)-3-((S) )-1-((3R,4S,5S)-4-((S)-2-((S)-2-(dimethylamino)-3-butylamido)-N,3-dimethyl Butyramide)-3-methoxy-5-methylheptanoyl)pyrrol-2-yl)-3-methoxy-2-methylpropionamido)-3-phenylpropionamido)methyl) Synthesis of Phenyl)-5-ureidovaleramide (Compound 1-10)
  • Step 9 (S)-2-((S)-2-(4-(4-Chloro-7H-pyrrole[2,3-d]pyrimidin-7-yl)butanamide)-3-methylbutyl Amido)-N-(4-(((S)))((2R,3R)-3-((S)-1-((3R,4S,5S)-4-((S)-2) -((S)-2-(dimethylamino)-3-methylbutyryl)-N,3-dimethylbutyryl)-3-methoxy-5-methylheptanoyl)pyrrole Synthesis of alk-2-yl)-3-methoxy-2-methylpropionamido)-3-phenylpropionamido)methyl)phenyl)-5-ureidovaleramide (Compound TL001)
  • Step 2 (S)-N-(4-(((S)-2-((2R,3R)-3-((S)-1-((3R,4S,5S)-4-((S) )-2-((S)-2-(Dimethylamino)-3-methylbutyryl)-N,3-dimethylbutyryl)-3-methoxy-5-methyl Heptanoyl)pyrrolidin-2-yl)-3-methoxy-2-methylpropionamido)-3-phenylpropionamido)methyl)phenyl)-2-((S)-3- Methyl-2-(4-(4-(methylthio)-7H-pyrrole[2,3-d]pyrimidin-7-yl)-butyryl)butylamido)-5-ureidovaleramide Synthesis of (Compound 2-3)
  • Step 3 (S)-N-(4-(((S)-2-((2R,3R)-3-((S)-1-((3R,4S,5S)-4-((S) )-2-((S)-2-(Dimethylamino)-3-methylbutyryl)-N,3-dimethylbutyryl)-3-methoxy-5-methyl Heptanoyl)pyrrolidin-2-yl)-3-methoxy-2-methylpropionamido)-3-phenylpropionamido)methyl)phenyl)-2-((S)-3- Methyl-2-(4-(4-(methylsulfonyl)-7H-pyrrole[2,3-d]pyrimidin-7-yl)-butyryl)-butanamide)-5-ureidovaleramide Synthesis of (Compound TL002)
  • Step 4 N-((S)-1-(((S)-1-((4R,3R)-3-((S)-1-(())) 3R,4S,5S)-4-((S)-2-((S)-2-(dimethylamino)-3-methylbutyrylamino)-N,3-dimethylbutyrylamino) 3-methoxy-5-methylheptanoyl)pyrrolidin-2-yl)-3-methoxy-2-methylpropanoylamino)-3-phenylpropionamido)methyl)phenyl Amino)-1-oxo-5-ureido-2-yl)amino)-3-methyl-1-oxybutan-2-yl)-6-(2-(methylsulfonyl)pyrimidine- Synthesis of 5-yl)-5-hexynylamide (Compound TL003)
  • Step 3 (S)-2-(32-azido-5-oxo-3,9,12,15,18,21,24,27,30-oxaoxa-6-azatriacetamide Synthesis of s-N-(4-(hydroxymethyl)phenyl)-5-ureidovaleramide (Compound 19-4)
  • Step 4 4-((S)-35-azido-4,8-dioxo-2-(3-ureidopropyl)-6,12,15,18,21,24,27,30 , 33-decyloxy-3,9-azatetradecane)benzyl ((S)-4-ethyl-11-(2-(N-isopropylmethylsulfonylamino)ethyl) -3,14-dioxo-3,4,12,14-tetrahydro-1H-pyrano[3',4',6,7]pyridazino[1,2-b]quinoline- Synthesis of 4-yl)carbonate (Compound 19-5)
  • Step 5 4-((S)-35-Amino-4,8-dioxo-2-(3-ureidopropyl)-6,12,15,18,21,24,27,30,33 -decyloxy-3,9-azatetradecane)benzyl ((S)-4-ethyl-11-(2-(N-isopropylmethylsulfonylamino)ethyl)-3 ,14-dioxo-3,4,12,14-tetrahydro-1H-pyrano[3',4',6,7]indolizine[1,2-b]quinoline-4- Synthesis of a base carbonate (compound 19-6)
  • Step 6 (S)-4-Ethyl-11-(2-(N-isopropylmethylsulfonamide)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro -1H-pyrano[3',4',6,7]pyridazino[1,2-b]quinolin-4-yl (4-((S)-42-(2-(methyl)) Sulfonyl)pyrimidin-5-yl)-4,8,37-trioxo-2-(3-ureidopropyl)-6,12,15,18,21,24,27,30,33- ⁇ Synthesis of Oxy-3,9,36-azadocosane-41-amido)benzyl)carbonate (Compound TL019)
  • Step 1 ((S)-1-(((S)-1-((4-(hydroxymethyl)phenyl)amino)-1-oxo-5-ureidopentan-2-yl)amino) )-3-methyl-butyramido-2-yl)-(9H-indenyl)methyl-carbamate
  • Step 3 N-((S)-1-(((S)-1-((4-(hydroxymethyl)phenyl)amino)-1-oxo-5-ureidopentan-2-yl)) Amino)-3-methyl-1-oxobutan-2-yl)-6-(2-(methylsulfonyl)pyrimidin-5-yl)-5-hexynamide (Compound 28-4) synthesis
  • Benzotriazol-1-yl-oxytripyrrolidinyl hexafluorophosphate (313 mg, 0.6 mmol) and N,N-diisopropylethylamine (194 mg, 1.50 mmol) were added to 6-( 2-Methylsulfonylpyrimidin-5-yl)-5-hexynoic acid (135 mg, 0.5 mmol) and (2S)-2-((2S)-2-amino-3-methyl-butanoyl)amino -N-(4-(Hydroxymethyl)phenyl)-5-ureido-pentanamide (190 mg, 0.5 mmol) in N,N-dimethylformamide (10 mL). Purification by preparative high performance liquid chromatography (Method D) gave the title compound. ESI-MS (m/z): 630.3 [M+H] + .
  • Step 4 (S)-4-Ethyl-11-(2-(N-isopropylmethanesulfonamide)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro- 1H-pyrano[3',4',6,7]pyridazino[1,2-b]quinolin-4-yl-(4-((S)-2-((S)-3) -Methyl-2-(6-(2-(methylsulfonyl)pyrimidin-5-yl))-5-hexynamido)butyramido)-5-ureidopentanoamide)benzyl)carbonate Synthesis of ester (compound TL028)
  • Step 1 (S)-2-((S)-35-azido-2-isopropyl-4,8-dioxo-6,12,15,18,21,24,27,30, Synthesis of 33-decyloxy-3,9-azatetradecane)-N-(4-(hydroxymethyl)phenyl)-5-ureidovaleramide (Compound 29-1)
  • Step 2 4-((2S,5S)-38-azido-5-isopropyl-4,7,11-trioxo-2-(3-ureidopropyl)-9,15,18 ,21,24,27,30,33,36-decyloxy-3,6,12-triazatridecylamide)benzyl ((S)-4-ethyl-11-(2- (N-isopropylmethylsulfonylamino)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro-1H-pyrano[3',4',6,7 Synthesis of pyridazine[1,2-b]quinolin-4-yl)carbonate (Compound 29-2)
  • Step 3 (S)-4-Ethyl-11-(2-(N-isopropylmethylsulfonamide)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro -1H-pyrano[3',4',6,7]pyridazino[1,2-b]quinolin-4-yl-(4-((2S,5S)-5-isopropyl) -38-(4-((6-(2-(methylsulfonyl)pyrimidin-5-yl)-5-hexynamido)methyl)-1H-1,2,3-triazol-1-yl -4,7,11-trioxo-2-(3-ureidopropyl)-9,15,18,21,24,27,30,33,36-decyloxy-3,6,12 Synthesis of tris(triazatridecylamino)benzyl)carbonate (compound TL029)
  • Step 1 (S)-2-((S)-35-Amino-2-isopropyl-4,8-dioxo-6,12,15,18,21,24,27,30,33- Synthesis of decyloxy-3,9-diazatridecylamide)-N-(4-(hydroxymethyl)phenyl)-5-ureidovaleramide
  • Step 2 N-((6S,9S)-1-amino-6-((4-(hydroxymethyl)phenyl)carbamoyl)-9-isopropyl-1,8,11,15-tetra Oxo-13,19,22,25,28,31,34,37,40-decyloxy-2,7,10,16-tetraazatetradodecane-42-yl)-6-(2 Synthesis of -(Methanesulfonyl)pyrimidin-5-yl)hex-5-ynylamide
  • Step 3 (S)-4-Ethyl-11-(2-(N-isopropylmethanesulfonamido)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro -1H-pyrano[3',4':6,7]indolizine[1,2-b]quinolin-4-yl(4-((2S,5S)-5-isopropyl- 45-(2-(Methylsulfonyl)pyrimidin-5-yl)-4,7,11,40-tetraoxo-2-(3-ureidopropyl)-9,15,18,21,24 Synthesis of 27,30,33,36-decyloxy-3,6,12,39-tetraazatetradecane-44-carbamoyl)benzyl)carbonate (Compound TL022)
  • Example 12 4-((S)-2-(4-Aminobutyl)-42-(2-(methylsulfonyl)pyrimidin-5-yl)-4,8,37-trioxo-6, 12,15,18,21,24,27,30,33-nonaoxa-3,9,36-triazatetradecyl-41-ynylamido)benzyl-((S)-4 -ethyl-11-(2-(N-isopropylmethanesulfonamido)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro-1H-pyrone [3' , 4':6,7]oxazino[1,2-b]quinolin-4-yl)carbonate
  • Step 1 (S)-4-Ethyl-11-(2-(N-isopropylmethanesulfonamido)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro- 1H-pyrone [3',4':6,7]pyridazino[1,2-b]quinolin-4-yl (4-((S)-2-(4-((4) -Methoxyphenyl)diphenylmethyl)amino)butyl)-42-(2-(methylsulfonyl)pyrimidin-5-yl)-4,8,37-trioxo-6,12,15 Synthesis of 18,21,24,27,30,33-nonaoxa-3,9,36-triazatetradodecyl-41-alkylamido)benzyl carbonate
  • 6-(2-(methylsulfonyl)pyrimidin-5-yl)hex-5-ynoic acid (12 mg, 0.045 mmol) was dissolved in dichloromethane (2 mL) at rt.
  • Azobenzotriazole)-N,N,N',N'-tetramethyluronium hexafluorophosphate (21.2 mg, 0.056 mmol) and N,N-diisopropylethylamine (8.6 mg, 0.067) (mmol)
  • stirring for 10 min compound 24-1 (35 mg, 0.022 mmol) was added and the reaction was stirred for 1 h.
  • Purification by preparative high performance liquid chromatography (Method B) gave the title compound.
  • ESI-MS (m/z): 1821.8 [M+H] + .
  • Step 2 4-((S)-2-(4-Aminobutyl)-42-(2-(methylsulfonyl)pyrimidin-5-yl)-4,8,37-trioxo-6,12 ,15,18,21,24,27,30,33-nonaoxa-3,9,36-triazatetradecyl-41-ynylamido)benzyl-((S)-4- Ethyl-11-(2-(N-isopropylmethanesulfonamido)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro-1H-pyrone [3', Synthesis of 4':6,7]oxazino[1,2-b]quinolin-4-yl)carbonate (Compound TL024)
  • Step 3 (9H-fluoren-9-yl)-methyl ((S)-1-((())-1-((4-(hydroxymethyl)phenyl)amino)-1-oxopropane Preparation of 2-yl)amino)-3-methyl-1-oxobutan-2-yl)-carbamate
  • Step 5 (S)-2-(32-azido-5-oxo-3,9,12,15,18,21,24,27,30-decyloxy-6-diaza thirty Preparation of Pentadecylamino)-N-((S)-1-((4-(hydroxymethyl)phenyl)amino)-1-oxopropan-2-yl)-3-methylbutanamide
  • Step 6 4-((2S,5S)-38 azido-5-isopropyl-2-methyl-4,7,11-trioxo-9,15,18,21,24,27, 30,33,36-decyloxy-3,6,12-triazatriaconamido)benzyl ((S)-4-ethyl-11-(2-(N-isopropylmethyl) Sulfonylamino)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro-1H-pyrano[3',4':6,7]pyridazine[1, Preparation of 2-b]quinolin-4-yl)carbonate
  • Step 7 (S)-4-Ethyl-11-(2-(N-isopropylmethylsulfonamide)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro -1H-pyrano[3',4':6,7]pyridazino[1,2-b]quinolin-4-yl-4-((2S,5S)-5-isopropyl- 2-Methyl-38-(4-((6-(2-(methylsulfonyl)pyrimidin-5-yl)yl)hex-5-ynylamino)methyl)-1H-1,2,3 -triazol-1-yl)-4,7,11-trioxo-9,15,18,21,24,27,30,33,36-decyloxy-3,6,12-triaza Preparation of triacontanido)benzyl carbonate (compound TL030)
  • Example XIV 4-((S)-2-(4-Aminobutyl)-35-(4-((6-(2-(methylsulfonyl)pyrimidin-5-yl)hex-5-amide) Methyl)-1H-1,2,3-triazol-1-yl)-4,8-dioxo-6,12,15,18,21,24,27,30,33-nineoxy Hetero-3,9-diazatridecanoylamino)benzyl ((S)-4-ethyl-11-(2-(N-isopropylmethylsulfonamido)ethyl)-3 ,14-dioxo-3,4,12,14-tetrahydro-1H-pyrano[3',4':6,7]indolizine[1,2-b]quinoline-4- Carbonate
  • Step 1 Synthesis of 6-(2-(methylsulfonyl)pyrimidin-5-yl)-N-(prop-2-yn-1-yl)hex-5-ynylamide
  • Step 2 4-((S)-35-azido-2-(4-((4-(methoxyphenyl))diphenylmethyl)amino)butyl)-4,8-dioxo -6,12,15,18,21,24,27,30,33-nonaoxa-3,9-diazatridecanoylamino)benzyl ((S)-4-ethyl-11 -(2-(N-isopropylmethanesulfonamido)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro-2H-pyrano[2,3-b] Synthesis of -1H-pyrano[3',4':6,7]oxazino[1,2-b]quinolin-4-yl)carbonate
  • T-030 (250 mg, 0.49 mmol) was dissolved in dichloromethane (10 mL), and then cooled to 0 ° C, then added to 4-dimethylaminopyridine (478 mg, 3.91 mmol) in dichloromethane (3 mL) The solution was then slowly added dropwise a solution of triphosgene (72 mg, 0.24 mmol) in dichloromethane (10 mL), and the mixture was stirred and stirred at 0 ° C for 20 min.
  • Step 3 (S)-4-Ethyl-11-(2-(N-isopropylmethanesulfonamido)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro -1H-pyrano[3',4':6,7]pyridazino[1,2-b]quinolin-4-yl (4-((S)-2-(4-((4) -Methoxyphenyl)diphenylmethyl)amino)butyl)-35-(4-((6-(2-(methylsulfonyl)pyrimidin-5-yl)hexyl-5-amide) Methyl)-1H-1,2,3-triazol-1-yl)-4,8-dioxo-6,12,15,18,21,24,27,30,33-decyloxy- Synthesis of 3,9-diazatridecanoylamino)benzyl)carbonate
  • Step 4 4-((S)-2-(4-Aminobutyl)-35-(4-((6-(2-(methylsulfonyl)pyrimidin-5-yl)hexyl-5-amide) )methyl)-1H-1,2,3-triazol-1-yl)-4,8-dioxo-6,12,15,18,21,24,27,30,33-hexaoxa -3,9-diazatridecanoylamino)benzyl ((S)-4-ethyl-11-(2-(N-isopropylmethylsulfonamido)ethyl)-3, 14-dioxo-3,4,12,14-tetrahydro-1H-pyrano[3',4':6,7]indolizine[1,2-b]quinolin-4-yl Synthesis of Carbonate (Compound TL033)
  • Step 1 4-((S)-35-azido-2-(4-((4-methoxyphenyl)diphenylmethyl)amino)butyl)-4,8-dioxo 6,6,15,18,21,24,27-decyloxy-((S)-9-((tert-butyldimethylsilyl)oxy)-4,11-diethyl- 3,14-dioxo-3,4,12,14-tetrahydro-1,2,3,4-tetrahydroquinoline-1H-pyrano[3',4':6,7]pyridazine Synthesis of [1,2-b]quinolin-4-yl)carbonate
  • Step 2 (S)-9-(tert-Butyldimethylsilyl)oxy)-4,11-diethyl-3,14-dioxo-3,4,12,14-tetrahydro- 1H-pyrano[3',4':6,7]pyridazine[1,2-b]quinolin-4-yl-4-((S)-2-(4-((6(6) -(methylsulfonyl)pyrimidin-5-yl)-35-(4-((6-2-(methylsulfonyl)pyrimidin-5-yl)hex-5-ynylamide)methyl)-1H- 1,2,3-triazol-1-yl)-dioxo 6,12,15,18,21,24,27,30,33-decyloxy-3,9-diazatrifene Synthesis of alkanoamido)carbonate
  • Step 3 4-((S)-2-(4-Aminobutyl)-35-(4-((6-(2-(methylsulfonyl)pyrimidin-5-yl)hex-5-ynylamide) )methyl)-1H-1,2,3-triazol-1-yl)-4,8-dioxo-6,12,15,18,21,24,27,30,33-oxime -3,9-diazatridecanoylamino)benzyl ((S)-11-diethyl-9-hydroxy-3,14-dioxo-3,4,12,14-tetra Synthesis of Hydrogen-1H-pyrano[3',4':6,7]oxazino[1,2-b]quinoline-4-carbonate (Compound TL034)
  • Step 1 ((S)-35-azido-2-(4-(((4-methoxyphenyl)diphenylmethyl)amino)butyl)-4,8-dioxo- 6,12,15,18,21,24,27,30,33-decyloxy-3,9-diazatridecylamide)benzyl ((S)-4-ethyl-11- (2-(N-Isopropylacetamido)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro-1,2,3,6-triazepane- Synthesis of 1H-pyrano[3',4':6,7]oxazino[1,2-b]quinolin-4-yl)carbonate
  • Step 2 (S)-4-Ethyl-11-(2-(N-isopropylacetylamino)ethyl)-3,14-dioxo 3,4,12,14-tetrahydro-1H- Nitraindolo[1,2-b]quinolin-4-yl)-4-((S)-2-(4-(((4-) in pyrano[3',4':6,7] Methoxyphenyl)diphenylmethyl)amino)butyl)-35-(4-((6-2-(methylsulfonyl)pyrimidin-5-yl)hex-5-ynylamide)methyl -1H-1,2,3-triazol-1-yl)-4,8-dioxo-6,12,15,18,21,24,27,30,33-decyloxy-3, Synthesis of 9-diazatridecanoylamino]carbonate
  • Step 3 4-((S)-2-(4-Aminobutyl)-35-(4-((6-(2-(methylsulfonyl)pyrimidin-5-yl)hex-5-ynylamide) )methyl)-1H-1,2,3-triazol-1-yl)-4,8-dioxo-6,12,15,18,21,24,27,30,33-hexaoxa -3,9-diazatridecanoylamino)benzyl ((S)-4-ethyl-11-(2-(N-isopropylacetylamino)ethyl)-3,14-di Oxo-3,4,12,14-tetrahydro-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinolin-4-yl)carbonate Synthesis of (Compound TL035)
  • Step 2 (S)-4-Ethyl-11-(2-(N-isopropylacetamido)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro-1H -pyrone [3',4':6,7]pyridazino[1,2-b]quinolin-4-yl(4-((S,Z)-2-(4-((( 4-methoxyphenyl)diphenylmethyl)amino)butyl)-42-(2-(methylsulfonyl)pyrimidin-5-yl)-4,8,37-trioxo-6,12, Synthesis of 15,18,21,24,27,30,33-nonaoxa-3,9,36-triazatetradodecyl-41-enamido)benzyl carbonate
  • Step 3 4-((S,Z)-2-(4-Aminobutyl)-42-(2-(methylsulfonyl)pyrimidin-5-yl)-4,8,37-trioxo-6 ,12,15,18,21,24,27,30,33-nonaoxa-3,9,36-triazatetradecyl-41-enamide)benzyl-((S)- 4-ethyl-11-(2-(N-isopropylacetamido)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro-1H-pyrone [3' Synthesis of 4':6,7]oxazino[1,2-b]quinolin-4-yl)carbonate (Compound TL045)
  • Example 18 4-((S)-2-(4-Aminobutyl)-42-(2-(methylsulfonyl)pyrimidin-5-yl)-4,8,37-trioxo-6, 12,15,18,21,24,27,30,33-nonaoxa-3,9,36-triazatetradecyl-41-ynylamido)benzyl-((S)-4 -ethyl-11-(2-(N-isopropylacetamido)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro-1H-pyrone [3', 4':6,7]oxazino[1,2-b]quinolin-4-yl)carbonate
  • Step 1 (S)-4-Ethyl-11-(2-(N-isopropylacetamido)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro-1H -pyrone [3',4':6,7]pyridazino[1,2-b]quinolin-4-yl(4-((S)-2-(4-(((4- Methoxyphenyl)diphenylmethyl)amino)butyl)-42-(2-(methylsulfonyl)pyrimidin-5-yl)-4,8,37-trioxo-6,12,15, Synthesis of 18,21,24,27,30,33-nonaoxa-3,9,36-triazatetradodecyl-41-alkylamido)benzyl carbonate
  • Step 2 4-((S)-2-(4-Aminobutyl)-42-(2-(methylsulfonyl)pyrimidin-5-yl)-4,8,37-trioxo-6,12 ,15,18,21,24,27,30,33-nonaoxa-3,9,36-triazatetradecyl-41-ynylamido)benzyl-((S)-4- Ethyl-11-(2-(N-isopropylacetamido)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro-1H-pyrone [3',4 Synthesis of ':6,7]oxazino[1,2-b]quinolin-4-yl)carbonate (Compound TL048)
  • a compound 48-2 was used in place of the compound 24-2 by a similar synthetic procedure as in Example 12, Step 2.
  • the title compound was obtained as the trifluoroacetic acid salt, 11.35 mg.
  • Example 19 4-((S)-2-(4-Aminobutyl)-35-(4-((2-(2-(methylsulfonyl)pyrimidin-5-yl)thiazole-4-carboxamide) Methyl)-1H-1,2,3-triazol-1-yl)-4,8-dioxo-6,12,15,18,21,24,27,30,33-nineoxy Hetero-3,9-diazatridecylamino)benzyl-((S)-4-ethyl-11-(2-(N-isopropylmethanesulfonamido)ethyl)-3 ,14-dioxo-3,4,12,14-tetrahydro-1H-pyrone [3',4':6,7]pyridazino[1,2-b]quinoline-4- Carbonate
  • reaction solution was cooled to room temperature, dripped into water, suction filtered, and the filtrate was collected, ethyl acetate was extracted (10 mL ⁇ 3), the aqueous phase was collected, the pH was adjusted to pH 3 with dilute hydrochloric acid, and the solid was precipitated. , 70mg. ESI-MS (m/z): 254.0 [M+H] + .
  • Step 3 Synthesis of 2-(2-(methylsulfonyl)pyrimidin-5-yl)-N-(propyl-2-alkyn-1-yl)thiazole-4-carboxamide
  • Step 4 (S)-4-Ethyl-11-(2-(N-isopropylmethanesulfonamido)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro -1H-pyrone [3',4':6,7]pyridazino[1,2-b]quinolin-4-yl-(4-((S)-2-(4-(( (4-methoxyphenyl)diphenylmethyl)amino)butyl)-35-(4-((2-(2-(methylsulfonyl)pyrimidin-5-yl)thiazol-4-carboxamide) )methyl)-1H-1,2,3-triazol-1-yl)-4,8-dioxo-6,12,15,18,21,24,27,30,33-hexaoxa Synthesis of -3,9-diazatripentadecylamino)benzyl)carbonate
  • Step 5 4-((S)-2-(4-Aminobutyl)-35-(4-((2-(2-(methylsulfonyl)pyrimidin-5-yl)thiazol-4-carboxamide) )methyl)-1H-1,2,3-triazol-1-yl)-4,8-dioxo-6,12,15,18,21,24,27,30,33-hexaoxa -3,9-diazatridecylamino)benzyl-((S)-4-ethyl-11-(2-(N-isopropylmethanesulfonamido)ethyl)-3, 14-dioxo-3,4,12,14-tetrahydro-1H-pyrone [3',4':6,7]pyridazino[1,2-b]quinolin-4-yl ) Synthesis of carbonate
  • Step 1 Synthesis of ethyl 2-(2-(methylthio)pyrimidin-5-yl)oxazole-4-carboxylate
  • Ethyl 2-bromooxazole-4-carboxylate 100 mg, 0.45 mmol
  • compound 49-1 126 mg, 0.50 mmol
  • a mixed solvent of 1,4-dioxane and water 25 °C. (4 mL / 2 mL)
  • potassium carbonate 125 mg, 0.9 mmol
  • [1,1'-bis(diphenylphosphino)ferrocene]palladium dichloride 33 mg, 0.05 mmol
  • Step 4 Synthesis of 2-(2-(methylsulfonyl)pyrimidin-5-yl)-N-(prop-2-yn-1-yl)-oxazole-4-carboxamide
  • Step 5 (S)-4-Ethyl-11-(2-(N-isopropylmethanesulfonamido)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro -1H-pyrano[3',4':6,7]indolizine[1,2-b]quinolin-4-yl 4-((S)-2-(4-((4) -Methoxyphenyl)diphenylmethyl)amino)butyl)-35-(4-((2-(2-(methylsulfonyl)pyrimidin-5-yl)oxazole-4-carbonyl) Amino)methyl)-1H-1,2,3-triazol-1-yl)-4,8-dioxo-6,12,15,18,21,24,27,30,33-oxime Synthesis of benzyl-3,9-diazatridecylamidobenzyl) benzyl) carbonate
  • Step 6 4-((S)-2-(4-Aminobutyric acid)-35-(4-((2-(2-(methylsulfonyl)pyrimidin-5-yl)oxazole-4-) Amido)methyl)-1H-1,2,3-triazol-1-yl)-4,8-dioxo-6,12,15,18,21,24,27,30,33- ⁇ Oxy-3,9-diazatridecanoylamino)benzyl-((S)-4-ethyl-11-(2-(N-isopropylmethylsulfonamido)ethyl) -3,14-dioxo-3,4,12,14-tetrahydro-1H-pyrano[3',4':6,7]indolizine[1,2-b]quinoline- Synthesis of 4-yl)carbonate
  • Step 1 ((S)-1-(((S)-1-((4-((()))((()))) 4S,5S)-4-((S)-2-((S)-2-(Dimethylamino)-3-butyryl)-N,3-dimethylbutyryl)-3-methoxy 5--5-methylheptanoyl)pyrrol-2-yl)-3-methoxy-2-methylpropionamido)-3-phenylpropionamido)methyl)phenyl)amino)-1-oxo Synthesis of 5-5-pentylureto-2-yl)amino)-3-methyl-1-oxobutan-2-yl)amino-(9H-indol-9yl)methyl-formate
  • Step 2 (S)-2-((S)-2-Amino-3-butanamide)-N-(4-((())((2R,3R)-3-((S) )-1-((3R,4S,5S)-4-((S)-2-((S)-2-(dimethylamino)-3-butylamido)-N,3-dimethylbutyl Amido)-3-methoxy-5-methylheptanoyl)pyrrol-2-yl)-3-methoxy-2-methylpropionamido)-3-phenylpropionamido)methyl)benzene Synthesis of 5-)-ureidovaleramide
  • Step 3 (S)-2-((S)-35-azido-2-isopropyl-4,8-dioxo-6,12,15,18,21,24,27,30,33- Nonaza-3,9-diazatridecylamino)-N-(4-(((S)-2-((2R,3R)-3-((S)-1-(( 3R,4S,5S)-4-((S)-2-((S)-2-((S)-2-((S)-2-(Dimethylamino)-3-methylbutanamide)-N,3-dimethylbutanamide)-3- Methoxy-5-methylheptanoyl)pyrrolidin-2-yl)-3-methoxy-2-methylpropionamide)-3-phenylpropanamide)methyl)phenyl)-5-ureido Synthesis of valeramide
  • Step 4 N-((1-((6S,9S)-1-amino-6-((4-((()))((2))) ((3R,4S,5S)-4-((S)-2-((S)-2-(Dimethylamino)-3-methylbutanamide)-N,3-dimethylbutyramide)- 3-methoxy-5-methylheptanoyl)pyrrolidin-2-yl)-3-methoxy-2-methylpropanamide)-3-phenylpropanamide)methyl)phenyl)carbamoyl )-9-isopropyl-1,8,11,15-tetraoxy-13,19,22,25,28,31,34,37,40-nonoxa-2,7,10,16- Tetraazanonane-42-yl)-1H-1,2,3-triazol-4-yl)methyl)-6-(2-(methylsulfonyl)pyrimidin-5-yl)-5- Synthesis of he
  • Step 1 4-((2S,5S)-38-azido-5-isopropyl-4,7,11-trioxo-2-(3-ureidopropyl)-9,15,18, 21,24,27,30,33,36-nonaoxa-3,6,12-triazatetradecyl)benzyl-((S)-1-((())-1-((()) ((3R,4S,5S)-1-((S)-2-((1R,2R)-3-(((1S,2R)-1-hydroxy-1-phenylpropan-2-yl)amino) )-1-methoxy-2-methyl-3-oxopropyl)pyrrolidin-1-yl)-3-methoxy-5-methyl-1-oxoheptan-4-yl) (A Synthesis of (amino)-3-methyl-1-oxobutan-2-yl)amino)-3-methyl-1-oxobutan-2-yl
  • Step 2 4-((2S,5S)-5-isopropyl-38-(4-((6-(2-(methylsulfonyl)pyrimidin-5-yl)-5-hexyn)amide) )-1H-1,2,3-triazol-1-yl)-4,7,11-trioxo-2-(3-ureidopropyl)-9,15,18,21,24,27 ,30,33,36-nonaoxa-3,6,12-triazatetradecyl)benzyl-((S)-1-(((S)-1-(((3R,4S) ,5S)-1-((S)-2-((1R,2R)-3-(((1S,2R)-1-hydroxy-1-phenylpropan-2-yl)amino)-1-) Oxy-2-methyl-3-oxopropyl)pyrrolidin-1-yl)-3-methoxy-5-methyl-1-oxoheptan
  • Step 1 4-((2S,5S)-38-azido-5-isopropyl-4,7,11-trioxo-2-(3-ureidopropyl)-9,15,18 Synthesis of 21,24,27,30,33,36-decyloxy-3,6,12-triazatridecylamide)benzyl-(4-nitrophenyl)-carbonate
  • Step 2 (S)-2-((2R,3R)-3-((2S)-1-((3R,4S,5S)-4-((S)-2-((S)-2-) (((4-((S)-2-((S)-2-(32-azido-5-oxo-3,9,12,15,18,21,24,27,30- ⁇ oxy-6-azatriaconamido)-3-methylbutyrylamino)-5-ureidopentanoylamino)benzyl)oxy)carbonyl)(methyl)amino)-3-methyl Butyrylamino)-N,3-dimethylbutyrylamino)-3-methoxy-5-methylheptyl)pyrrolidin-2-yl)-3-methoxy-2-methylpropane Synthesis of acyl)-L-phenylalanine
  • Step 3 (S)-2-((2R,3R)-3-((2S)-1-((3R,4S,5S)-4-((S)-N,3-dimethyl-2) -((S)-3-methyl 2-(methyl(((4-((S))-2-((S)-3-methyl-2-(32-(4-((6-) 2-(Methylsulfonyl)pyrimidin-5-yl)hex-5-carbamoyl)methyl)-1H-1,2,3-triazol-1-yl)-5-oxo-3,9 ,12,15,18,21,24,27,30-decyloxy-6-azatridecylamido)butyrylamino)-5-ureidopentanoylamino)benzyl)oxy)carbonyl) Amino) Butyrylamino) Butyrylamino)-3-methoxy-5-methylheptyl)pyrrolidin-2-yl
  • Step 1 (S)-4-(35-azido-2-(4-(((4-methoxyphenyl))))phenyl)amino)butanoyl)-4,8-dioxy-6 ,12,15,18,21,24,27,30,33-nonaoxa-3,9-diazatridecylamino)benzyl-(4-nitrophenyl)-carbonate synthesis
  • Step 2 4-((S)-35-azido-2-(4-(((4-methoxyphenyl))diphenylmethyl)amino)butanoyl)-4,8-dioxo- 6,12,15,18,21,24,27,30,33-nonaoxa-3,9-diazatripentadecylamino)benzyl ((S)-1-((((S)) -1-(((3R,4S,5S)-1-((S)-2-((1R,2R)-3-(((1S,2R)-1-hydroxy-1-phenylpropane-2) -yl)amino)-1-methoxy-2-methyl-3-oxopropyl)pyrrolidin-1-yl)-3-methoxy-5-methyl-1-oxoheptane-4- (M)amino)-3-methyl-1-oxobutan-2-yl)amino)-3-methyl-1-
  • Step 3 4-((S)-2-(4-(((4-methoxyphenyl))diphenylmethyl)amino)butanoyl)-35-(4-((6-(2-) Methanesulfonyl)pyrimidin-5-yl)-5-hexynamide)methyl)-1H-1,2,3-triazol-1-yl)-4,8-dioxo-6,12,15 ,18,21,24,27,30,33-nonaoxa-3,9-diazatridecylamino)benzyl ((S)-1-(((S)-1-(((())) (3R,4S,5S)-1-((S)-2-((1R,2R)-3-(((1S,2R)-1-hydroxy-1-phenylpropan-2-yl)amino) 1-methoxy-2-methyl-3-oxopropyl)pyrrolidin-1-yl)-3-methoxy-5
  • Step 4 4-((S)-2-(4-Aminobutyl)-35-(4-((6-(2-(methylsulfonyl)pyrimidin-5-yl)-5-hexynamide) Methyl)-1H-1,2,3-triazol-1-yl)-4,8-dioxo-6,12,15,18,21,24,27,30,33-nonaoxa- 3,9-diazatridecylamino)benzyl-((S)-1-(((S)-1-(((3R,4S,5S)-1-((S)-2) -((1R,2R)-3-(((1S,2R)-1-hydroxy-1-phenylpropan-2-yl)amino)-1-methoxy-2-methyl-3-oxopropane Pyrrolidin-1-yl)-3-methoxy-5-methyl-1-oxoheptan-4-yl)(methyl)amino
  • Step 1 Synthesis of methyl 4-(2-(methylthio)pyrimidin-5-yl)benzoate
  • Benzotriazole-N,N,N',N'-tetramethyluronium hexafluorophosphate 100 mg, 0.26 mmol was added to compound 55-3 (50 mg, 0.18 mmol) in dichloromethane at 25 °C.
  • a (10 mL) solution the reaction was stirred for 30 min, and propargylamine (10 mg, 0.2 mmol) and N,N-diisopropylethylamine (70 mg, 0.5 mmol) were added to the reaction mixture, and the reaction was stirred for 2.5 h. Purification by column chromatography on silica gel ESI-MS (m/z): 316.0 [M+H] + .
  • Step 5 (S)-4-Ethyl-11-(2-(N-isopropylmethanesulfonamido)ethyl)-3,14-dioxo-3,4,12,14-tetrahydro -1H-pyrano[3',4':6,7]indolizine[1,2-b]quinolin-4-yl(4-((S)-2-(4-((( 4-methoxyphenyl)diphenylmethyl)amino)butyl)-35-(4-((4-(2-(methylsulfonyl)pyrimidin-5-yl)benzamide)) -1H-1,2,3-triazol-1-yl)-4,8-dioxo-6,12,15,18,21,24,27,30,33-decyloxy-3 Synthesis of 9-diazatridecanoylamino)benzyl)carbonate
  • Step 6 4-((S)-2-(4-Aminobutyl)-35-(4-((4-(2-(methylsulfonyl)pyrimidin-5-yl)benzamide)) -1H-1,2,3-triazol-1-yl)-4,8-dioxo-6,12,15,18,21,24,27,30,33-decyloxy-3 , 9-diazatridecanoylamino)benzyl ((S)-4-ethyl-11-(2-(N-isopropylmethylsulfonamido)ethyl)-3,14- Dioxo-3,4,12,14-tetrahydro-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinolin-4-yl)carbonic acid Ester synthesis
  • Step 1 32-(4-((6-(2-(methylsulfonyl)pyrimidin-5-yl)hex-5-ynylamide)methyl)-1H-1,2,3-triazole-1 Synthesis of 5-yloxy-3,9,12,15,18,21,24,27,30-decyloxy-6-azatridodecanoic acid
  • Step 2 (9H- ⁇ -9-yl)methyl ((S)-1-(((S)-1-((4-((S))-3-azido-2-((2R, 3R)-3-((S)-1-((3R,4S,5S)-4-((S)-2-((S)-2-(dimethylamino)-3-methylbutyryl) Amino)-N,3-dimethylbutyrylamino)-3-methoxy-5-methylheptyl)pyrrolidin-2-yl)-3-methoxy-2-methylpropionamido) Propyl)phenyl)amino)-1-oxo-5-ureidopentanoylamino-2-yl)amino)-3-methyl-1-oxobutan-2-yl)carbamate synthesis
  • Step 3 (S)-2-((S)-2-Amino-3-methylbutyrylamino)-N-(4-((S)-3-azido-2-((2R,3R) )-3-((S)-1-((3R,4S,5S)-4-((S)-2-((S)-2-(dimethylamino)-3-methylbutyrylamino) )-N,3-dimethylbutyrylamino)-3-methoxy-5-methylheptyl)pyrrolidin-2-yl)-3-methoxy-2-methylpropionamido) Synthesis of phenyl)phenyl)-5-ureidovaleramide
  • Step 4 N-((1-((6S,9S)-1-amino-6-((4-((S))-3-azido-2-((2R,3R)-3-(( S)-1-((3R,4S,5S)-4-((S)-2-((S)-2-(dimethylamino)-3-methylbutyrylamino)-N,3- Dimethylbutyrylamino)-3-methoxy-5-methylheptyl)pyrrolidin-2-yl)-3-methoxy-2-methylpropionamido)propyl)phenyl)amino Formyl)-9-isopropyl-1,8,11,15-tetraoxo-13,19,22,25,28,31,34,37,40-decyloxy-2,7,10, 16-tetraazatetradodecane-42-yl)-1H-1,2,3-triazol-4-yl)methyl)-6-(2-(
  • Sacituzumab antibody (anti-Trop-2, 33.5 mg/mL) was diluted with 0.25 mL of a solution containing 20 mM PB, 150 mM NaCl and 20 mM sodium edetate (pH 7.6), followed by 0.45 mL containing 20 mM PB and 150 mM NaCl.
  • the solution (pH 7.6) was mixed, adjusted to pH 7.4 with a 1 M K 2 HPO 4 solution, and mixed with 10 mM TCEP (tris(2-carboxyethyl)phosphine) solution, and allowed to stand at room temperature for 30 min.
  • TCEP tris(2-carboxyethyl)phosphine
  • TL003 dissolved in dimethyl sulfoxide was added in an amount of 15 times the substance, and the mixture was allowed to stand at room temperature for 2 hours. After completion, 6.1 ⁇ l of 100 mM cysteine was added to terminate the reaction. Finally, the buffer was replaced with a 20 mM PB buffer solution of pH 6.44 using a G-25 gel column to obtain a product of TL003 coupled with Sacituzumab antibody, which was named BT001002.
  • Sacituzumab antibody (anti-Trop-2, 17.6 mg/mL) was diluted with 0.095 mL of a dilution (solution containing 20 mM PB, 150 mM NaCl and 20 mM sodium edetate, pH 7.6); then 1 M Na 2 HPO 4 The solution was adjusted to pH 7.4, mixed with 10 mM TCEP solution, and allowed to stand at room temperature for 30 min.
  • TL 019 dissolved in dimethyl sulfoxide was added in an amount of 9 times the substance, and the mixture was allowed to stand at room temperature for 2 h.
  • the buffer was replaced with a PBS buffer solution of pH 6.5 using a G-25 gel column to obtain a product of TL019 coupled with Sacituzumab antibody, which was named BT001004.
  • TL003 was replaced with the trifluoroacetate salt of TL024 to obtain the product of TL024 coupled with the Sacituzumab antibody, designated BT001012.
  • TL003 was replaced with the trifluoroacetate salt of TL048 to obtain the product of TL048 coupled with the Sacituzumab antibody, designated BT001013.
  • TL003 was replaced with TL030 to obtain the product of TL030 coupled with the Sacituzumab antibody, designated BT001018.
  • Sacituzumab antibody (anti-Trop-2, 33.5 mg/mL) was diluted with 0.25 mL of a solution containing 20 mM PB, 150 mM NaCl and 20 mM sodium edetate (pH 7.6), followed by 0.45 mL containing 20 mM PB and 150 mM NaCl.
  • the solution (pH 7.6) was mixed, adjusted to pH 7.4 with a 1 M Na 2 HPO 4 solution, and mixed with 10 mM TCEP (tris(2-carboxyethyl)phosphine) solution, and allowed to stand at room temperature for 30 min.
  • TCEP tris(2-carboxyethyl)phosphine
  • TL033 trifluoroacetate dissolved in dimethyl sulfoxide was added in an amount of 10 times the substance, and the mixture was allowed to stand at room temperature for 2 hours. After completion, 6.1 ⁇ l of 100 mM cysteine was added to terminate the reaction. Finally, the buffer was replaced with a PBS buffer solution of pH 6.5 using a G-25 gel column to obtain a product of TL033 coupled with Sacituzumab antibody, which was named BT001021.
  • TL003 was replaced with the trifluoroacetate salt of TL034 to obtain the product of TL034 coupled with the Sacituzumab antibody, designated BT001022.
  • TL003 was replaced with the trifluoroacetate salt of TL035 to obtain the product of TL035 coupled with the Sacituzumab antibody, designated BT001023.
  • TL003 was replaced with the trifluoroacetate salt of TL045 to obtain the product of TL045 coupled with the Sacituzumab antibody, designated BT001032.
  • TL003 was replaced with the trifluoroacetate salt of TL033, and the Sacituzumab antibody was replaced with the M1 antibody to obtain a product of TL033 coupled with the M1 antibody, designated BT001033.
  • TL003 was replaced with the trifluoroacetate salt of TL033, and the Sacituzumab antibody was replaced with the M2 antibody to obtain the product of TL033 coupled with the M2 antibody, designated BT001034.
  • M3 antibody anti-Trop-2, 33.5 mg/mL
  • a solution containing 20 mM PB, 150 mM NaCl and 20 mM sodium edetate (pH 7.6) was diluted with 0.25 mL of a solution containing 20 mM PB, 150 mM NaCl and 20 mM sodium edetate (pH 7.6), followed by 0.45 mL containing 20 mM PB and 150 mM.
  • the solution of NaCl pH 7.6 was mixed, adjusted to pH 7.4 with a 1 M Na 2 HPO 4 solution, and mixed with 10 mM TCEP (tris(2-carboxyethyl)phosphine) solution, and allowed to stand at room temperature for 30 min.
  • TCEP tris(2-carboxyethyl)phosphine
  • a trifluoroacetic acid salt of TL033 dissolved in dimethyl sulfoxide was added in an amount of 10 times the substance, and the mixture was allowed to stand at room temperature for 2 hours. After completion, the reaction was terminated by adding 6.1 ⁇ l of 100 mM cysteine. Finally, the buffer was replaced with a PBS buffer solution of pH 6.5 using a G-25 gel column to obtain a product of TL033 coupled with the M3 antibody, which was named BT001035.
  • TL003 was replaced with trifluoroacetate salt of TL033
  • Sacituzumab antibody was replaced with trastuzole antibody to obtain a product of TL033 coupled to trastuzole antibody, designated BT001036.
  • TL003 was replaced with the trifluoroacetic acid salt of TL049 to give the product of TL049 and Sacituzumab antibody, BT001040.
  • TL003 was replaced with the trifluoroacetate salt of TL050 to obtain the product of TL050 coupled with the Sacituzumab antibody, designated BT001041.
  • TL003 was replaced with TL051 to obtain the product of TL051 coupled with the Sacituzumab antibody, designated BT001042.
  • TL003 was replaced with TL052 to obtain the product of TL052 coupled with the Sacituzumab antibody, designated BT001043.
  • TL003 was replaced with TL053 to obtain the product of TL053 coupled with the Sacituzumab antibody, designated BT001044.
  • TL003 was replaced with the trifluoroacetate salt of TL054 to obtain the product of TL054 coupled with the Sacituzumab antibody, designated BT001045.
  • TL003 was replaced with the trifluoroacetate salt of TL055 to obtain the product of TL055 coupled with the Sacituzumab antibody, designated BT001046.
  • TL003 was replaced with TL056 to obtain the product of TL056 coupled with the Sacituzumab antibody, designated BT001047.
  • Mobile phase A 0.1% FA/98% H 2 O/2% ACN
  • mobile phase B 0.1% FA/2% H 2 O/98% ACN
  • mAb represents a monoclonal antibody
  • LC represents an antibody light chain
  • HC represents an antibody heavy chain
  • DAR1 represents a conjugate comprising an antibody light chain/heavy chain and a cellular biologically active molecule
  • DAR2 represents an antibody light chain/ a conjugate of a heavy chain and two cellular bioactive molecules
  • DAR3 represents a conjugate comprising one antibody light/heavy chain and three cellular bioactive molecules
  • DAR4 is expressed as comprising one antibody light/heavy chain and four cells
  • a glycoform represents a sugar chain structure on two heavy chains: G0F indicates fucosylation without galactose.
  • mAb, LC, HC, DAR1, DAR2, DAR3, DAR4, and G0F are as described above.
  • Mobile phase A 0.1% FA/98% H 2 O/2% ACN
  • mobile phase B 0.1% FA/2% H 2 O/98% ACN
  • LC stands for antibody light chain and HC stands for antibody heavy chain.
  • the antibody light chain of BT001004 is coupled with 0 ⁇ 1 cell bioactive molecules (LC, DAR1 ratio is 14%, 86%, respectively), and heavy chain is coupled with 1-3 cell bioactive molecules (DAR1).
  • the ratio of DAR2 to DAR3 was 13%, 19%, and 68%, respectively, and the coupling ratio (DAR) of the entire antibody to the cell bioactive molecule was calculated to be 7.0.
  • the antibody light chain is coupled with 0 to 1 toxin (LC, DAR1 ratio is 12.9%, 87.1%, respectively), and the heavy chain is coupled with 1 to 3 toxins (DAR1, DAR2, DAR3 ratios, respectively).
  • the ratio of the antibody to toxin (DAR) was 7.0, which was 13.4%, 10.8%, and 75.8%.
  • the antibody light chain is coupled with 0 to 1 toxin (LC, DAR1 ratio is 6.8%, 93.2%, respectively), and the heavy chain is coupled with 1-4 toxins (DAR1, DAR2, DAR3, DAR4).
  • the ratios were 12.8%, 12.8%, 64.9%, 9.5%, respectively, and the coupling ratio (DAR) of the antibody to the toxin was calculated to be 7.3.
  • the light chain of BT001018 is coupled with 0 to 1 toxin (LC, DAR1 ratio is 55.3%, 44.7%, respectively), and heavy chain is coupled with 1 to 3 toxins (DAR1, DAR2, DAR3 ratios, respectively).
  • the ratio of the antibody to toxin (DAR) was 5.2, which was 19.6%, 23.3%, and 49.6%.
  • Mobile phase A 0.1% FA/98% H 2 O/2% ACN
  • mobile phase B 0.1% FA/2% H 2 O/98% ACN
  • the antibody light chain is coupled with 0 to 1 toxin (LC, DAR1 ratio is 4.5%, 95.5%, respectively), and heavy chain is coupled with 1 to 3 toxins (DAR1, DAR2, DAR3 ratios, respectively).
  • the ratio of the antibody to toxin (DAR) was 6.9, which was 15.3%, 17.6%, and 67.1%).
  • the antibody light chain is coupled with 0 to 1 toxin (LC, DAR1 ratio is 15%, 85%, respectively), and the heavy chain is coupled with 0 to 3 toxins (HC, DAR1, DAR2, DAR3).
  • the ratios were 6.7%, 16.7%, 12.7%, and 63.9%, respectively, and the coupling ratio (DAR) of the antibody to the toxin was calculated to be 6.4.
  • Liquid chromatography column Thermo MabPacTM RP 4 ⁇ m, 3.0mm*100mm
  • Mobile phase A 0.1% FA/98% H 2 O/2% ACN
  • mobile phase B 0.1% FA/2% H 2 O/98% ACN
  • Mobile phase A (% by volume) 80 60 10 10 80 80 Mobile phase B (% by volume) 20 40 90 90 20 20
  • the antibody light chain is coupled with 0 to 1 cell bioactive molecule (LC, DAR1 ratio is 4.9%, 95.1%, respectively), and heavy chain is coupled with 1-4 cell bioactive molecules (DAR1).
  • the ratios of DAR2, DAR3, and DAR4 were 16.5%, 14.3%, 52.6%, and 16.6%, respectively, and the coupling ratio (DAR) of the antibody to the cell bioactive molecule was calculated to be 7.3.
  • Example 55 A method similar to that of Example 55 was employed, and the results are shown in Figs. 22 and 23.
  • the antibody light chain is coupled with 0 to 1 cell bioactive molecule (LC, DAR1 ratio is 10.5%, 89.5%, respectively), and heavy chain is coupled with 1-4 cell bioactive molecules (DAR1).
  • the ratio of DAR2, DAR3, and DAR4 was 21.3%, 14.8%, 57.9%, and 6.0%, respectively, and the coupling ratio (DAR) of the antibody to the cell bioactive molecule was calculated to be 6.8.
  • the antibody light chain is coupled with 0 to 1 cell bioactive molecule (LC, DAR1 ratio is 14.9%, 85.1%, respectively), and heavy chain is coupled with 1-3 cell bioactive molecules (DAR1).
  • the ratio of DAR2 to DAR3 was 19.7%, 9.4%, and 70.9%, respectively, and the coupling ratio (DAR) of the antibody to the cell bioactive molecule was calculated to be 6.7.
  • the antibody light chain is coupled with 0 to 1 cell bioactive molecule (LC, DAR1 ratio is 9.1%, 90.9%, respectively), and the heavy chain is coupled with 1-3 cell bioactive molecules (DAR1).
  • the ratio of DAR2 to DAR3 was 20.1%, 11.4%, and 68.4%, respectively, and the coupling ratio (DAR) of the antibody to the cell bioactive molecule was calculated to be 6.8.
  • the antibody light chain is coupled with 0 to 1 cell bioactive molecule (LC, DAR1 ratio is 23.0%, 77.0%, respectively), and heavy chain is coupled with 1-3 cell bioactive molecules (DAR1).
  • the ratio of DAR2 to DAR3 was 19.4%, 11.4%, and 69.3%, respectively, and the coupling ratio (DAR) of the antibody to the cell bioactive molecule was calculated to be 6.5.
  • the antibody light chain is coupled with 0 to 1 cell bioactive molecule (LC, DAR1 ratio is 33.8%, 66.2%, respectively), and heavy chain is coupled with 0 to 3 cell bioactive molecules (DAR0).
  • the ratio of DAR1, DAR2, and DAR3 was 21.9%, 6.1%, 9.6%, and 62.3%, respectively, and the coupling ratio (DAR) of the antibody to the cell bioactive molecule was calculated to be 5.6.
  • the antibody light chain of BT001047 is coupled with 0 to 1 cell bioactive molecule (LC, DAR1 ratio is 13.7%, 86.3%, respectively), and heavy chain is coupled with 1-3 cell bioactive molecules (DAR1).
  • the ratio of DAR2 to DAR3 was 22.2%, 13.5%, and 64.3%, respectively, and the coupling ratio (DAR) of the antibody to the cell bioactive molecule was calculated to be 6.6.
  • the coupling reaction was monitored by SEC-HPLC and the conjugate was subjected to SEC detection.
  • Liquid chromatography column TOSOH TSKgel SuperSW mAb, 4 ⁇ m, 7.8 mm x 300 mm;
  • Mobile phase 100 mmol/L Na 2 HPO 4 , 100 mmol/L NaCl, 5% isopropanol, pH 7.0;
  • Injection volume 30 ⁇ g; isocratic operation: 30 min.
  • the SEC chromatogram and the molecular weight Marker SEC chromatogram of the BT001002 obtained by coupling the antibody with TL003 and the antibody are shown in Figures 7 and 8, respectively.
  • the molecular weight Marker molecular weight marker it is confirmed that the main peak of the coupled product has a molecular weight of about 150 kD, that is, the antibody and TL003.
  • BT001002 obtained by coupling with the antibody, the light and heavy chains were not separated, and the antibody remained in the overall structure.
  • the SEC chromatogram of BT001004 obtained by coupling TL019 with antibody is shown in Fig. 9. According to the SEC retention time and peak area ratio, it is confirmed that the molecular weight of the main coupling product is about 150 kD, that is, BT001004 obtained by coupling TL019 with the antibody, and the antibody remains. The complete structure.
  • the SEC chromatogram of BT001012 obtained by coupling TL024 with antibody is shown in Figure 34. According to the SEC retention time and peak area ratio, it was confirmed that the molecular weight of the main coupling product was about 150 kD, that is, BT001012 obtained by coupling TL024 with the antibody, and the antibody remained. The complete structure.
  • the SEC chromatogram of BT001013 obtained by coupling TL048 with antibody is shown in Fig. 35. According to the SEC retention time and peak area ratio, it is confirmed that the molecular weight of the main coupling product is about 150 kD, that is, BT001013 obtained by coupling TL048 with the antibody, and the antibody remains. The complete structure.
  • the SEC chromatogram of BT001018 obtained by coupling TL030 to the antibody is shown in Figure 36. According to the SEC retention time and peak area ratio, it was confirmed that the molecular weight of the main coupling product was about 150 kD, that is, BT001018 obtained by coupling TL030 with the antibody, and the antibody remained. The complete structure.
  • the SEC chromatogram of BT001021 obtained by coupling TL033 with antibody is shown in Figure 37. According to the SEC retention time and peak area ratio, it was confirmed that the molecular weight of the main coupling product was about 150 kD, that is, BT001021 obtained by coupling TL033 with the antibody, and the antibody remained. The complete structure.
  • the SEC chromatogram of BT001023 obtained by coupling TL035 with antibody is shown in Figure 38. According to the SEC retention time and peak area ratio, it was confirmed that the molecular weight of the main coupling product was about 150 kD, that is, BT001023 obtained by coupling TL035 with the antibody, still retaining the antibody. The complete structure.
  • the SEC chromatogram of BT001042 obtained by coupling TL051 with antibody is shown in Figure 39. According to the SEC retention time and peak area ratio, it was confirmed that the molecular weight of the main coupling product was about 150 kD, that is, BT001042 obtained by coupling TL051 with the antibody, and the antibody remained. The complete structure.
  • the SEC chromatogram of BT001043 obtained by coupling TL052 with antibody is shown in Figure 40. According to the SEC retention time and peak area ratio, it was confirmed that the molecular weight of the main coupling product was about 150 kD, that is, BT001043 obtained by coupling TL052 with the antibody, and the antibody remained. The complete structure.
  • the SEC chromatogram of BT001044 obtained by coupling TL053 with antibody is shown in Fig. 41. According to the ratio of SEC retention time and peak area, it was confirmed that the molecular weight of the main coupling product was about 150 kD, that is, BT001044 obtained by coupling TL053 with the antibody, and the antibody remained. The complete structure.
  • the SEC chromatogram of BT001046 obtained by coupling TL055 with the antibody is shown in Fig. 42. According to the SEC retention time and peak area ratio, it was confirmed that the molecular weight of the main coupling product was about 150 kD, that is, BT001046 obtained by coupling TL055 with the antibody, and the antibody remained. The complete structure.
  • the SEC chromatogram of BT001047 obtained by coupling TL056 with antibody is shown in Fig. 43. According to the SEC retention time and peak area ratio, it was confirmed that the molecular weight of the main coupling product was about 150 kD, that is, BT001047 obtained by coupling TL056 with the antibody, and the antibody remained. The complete structure.
  • the tumor cells MDA-MB-468 (Trop-2 positive cell line) and HCC1806 (Trop-2 positive cell line) were cultured; the bioactive molecules and ADC molecules of the present disclosure were co-cultured with tumor cells, and then CCK8 reagent was added ( Dongren Chemical Technology Co., Ltd., Cat: CK04, Lot: JJ744), using a microplate reader (manufacturer: Molecular Devices, model: SpectraMax M2) to read (detection wavelength is 450nm), to detect the activity of dehydrogenase in mitochondria, The inhibitory effect of ADC on cell proliferation was evaluated.
  • the source of tumor cells is shown in Table 1.
  • Bioactive molecules or ADCs (12 concentration gradients) were diluted with the corresponding assay medium (containing 2% FBS). Tumor cells were digested by conventional methods using trypsin, cells were harvested and counted, and resuspended in the corresponding assay medium (containing 2% FBS). The diluted bioactive molecule or ADC is added to a 96-well plate and the cells are added. Then, 20 ⁇ L of CCK8 reagent was added to each well, and the reaction was carried out for 4 hours, and the microplate reader was read (detection wavelength was 450 nm). The experimental conditions and test results are shown in Tables 2 and 3.
  • the test results show that the bioactive molecules have tumor cell killing effect.
  • test results show that the ADC molecules obtained by the new coupling method have tumor cell killing effect. It is indicated that the ADC formed by the new coupling method can kill tumor cells, and the new coupling method is effective in ADC molecules.
  • the liquid concentration is 5.44mg / ml, stored at -20 ° C, when used, diluted with saline according to the dose to obtain a test solution;
  • the liquid concentration is 13.158mg/ml, stored at -20 °C, diluted with saline according to the dose when used. , obtaining a test solution;
  • T-030 solid powder, prepared with a concentration of 5.2 mg / ml in 100% DMSO (Sigma), stored at -20 ° C, diluted with a physiological saline solution to obtain a test solution;
  • SN-38 also can be expressed as SN38
  • a solid powder prepared with a concentration of 3.23 mg/ml in 100% DMSO (Sigma), stored at -20 ° C, and diluted with a physiological saline solution to obtain a test solution.
  • the dose of toxin is administered according to the equimolar ratio of the ADC sample.
  • T-030, SN-38, and Immu-132 are as follows:
  • mice Balb/c-nu mice (Beijing Weitong Lihua Experimental Animal Technology Co., Ltd., production license number: SCXK (Beijing) 2016-0011); gastric cancer cell line NCI-N87 (ATCC), breast cancer cell line HCC1806 (Nanjing Science).
  • a tumor-bearing mouse with a tumor volume of 100 to 200 mm 3 and 6 cells/group were randomly selected (determined according to the number of samples).
  • the administration volume was 10 mL/kg
  • the administration route was tail vein injection
  • the administration was performed twice a week.
  • the tumor growth inhibition rate TGI (%) was calculated using the following formula to evaluate the antitumor efficacy of antibody drug conjugates:
  • TGI (%) [1 - (V T end - V T start ) / (V C end - V C start )] * 100%
  • V T is the mean tumor volume at the end of the treatment group
  • V T at the beginning mean volume of tumor at the beginning of administration in the treatment group
  • V C mean volume of tumor at the end of the experiment in the solvent control group
  • V C start mean volume of tumor at the start of drug control group administration
  • mice were used to evaluate the inhibition of tumor conjugated BT001021 on the proliferation of tumor-bearing mice by subcutaneous transplantation of human tumor cells.
  • the human gastric cancer cell line NCI-N87 and the human triple negative breast cancer cell line HCC1806 were subcutaneously implanted to construct a tumor-bearing mouse model, and the tumor volume was grown to about 100 mm 3 and then randomly grouped.
  • BT001021 was administered intravenously twice a week for 6 times. Tumor volume and animal body weight changes were measured twice a week, and the drug effect (antitumor effect) of antibody drug conjugates on tumor-bearing mice was evaluated.
  • NCI-N87 cells were cultured in a 1640 medium containing 10% fetal bovine serum at 37 ° C, 5% CO 2 .
  • NCI-N87 cells in the exponential growth phase were collected, resuspended in PBS to a suitable concentration, and inoculated into female Balb/c-nu mice to establish a gastric cancer model.
  • the average tumor volume was about 90 mm 3 , they were randomly divided according to tumor size, namely saline group, BT001021 (3 mg/kg, intravenous injection, twice a week ⁇ 3 weeks), and positive drug Immu-132 (3 mg/kg).
  • Intravenous injection, twice a week ⁇ 3 weeks) group, T030 group, SN38 group, the corresponding drugs were injected into the tail vein after grouping, and administered twice a week for 6 times.
  • the tumor volume and body weight of the mice were observed and periodically measured after administration, and the specific results are shown in Table 4, Figures 44 and 45.
  • human gastric cancer cell line NCI-N87 was used to construct a human gastric cancer subcutaneous xenograft model, and the efficacy of BT001021 in NCI-N87 human gastric cancer tumor-bearing mouse model was evaluated.
  • BT001021 (3mg/kg, intravenous injection, twice a week ⁇ 3 weeks) can significantly inhibit the tumor growth of NCI-N87 gastric cancer xenograft model mice, and tumor regression and antitumor activity at the end of administration. Compared with positive Immu-132, no deaths were observed in all treatment groups during the observation period, and significant animal weight loss was observed, indicating that BT001021 had no obvious toxicity.
  • HCC1806 cells were cultured in 1640 medium containing 10% fetal bovine serum at 37 ° C, 5% CO 2 .
  • HCC1806 in the exponential growth phase was collected, resuspended in PBS to a suitable concentration, and inoculated into female Balb/c-nu mice to establish a breast cancer model.
  • the average tumor volume was about 130 mm 3 , they were randomly grouped according to tumor size, which were saline group, BT001021 (10 mg/kg, intravenous injection, twice a week ⁇ 3 weeks), and positive drug Immu-132 (10 mg/kg).
  • intravenous injection, twice a week ⁇ 3 weeks) group the corresponding drug was injected into the tail vein after grouping, twice a week for 5 times.
  • the tumor volume of the mice was observed and periodically measured after administration, and the specific results are shown in Table 5, Figure 46.
  • the human breast cancer cell line HCC1806 used in this experiment was used to construct a human breast cancer subcutaneous xenograft model, and the efficacy of BT001021 in the HCC1806 human breast cancer-bearing mouse model was evaluated.
  • BT001021 (10 mg/kg, intravenous injection, twice a week ⁇ 3 weeks) significantly inhibited tumor growth in HCC1806 breast cancer xenograft model mice, and the antitumor activity was superior to that of positive Immu-132.
  • the antibody drug of the present invention can significantly inhibit tumor growth in the mouse NCI-N87 model, which is significantly better than Immu-132 at the same dose, and no Significant weight loss and no significant drug toxicity.
  • Immu-132 did not show significant inhibitory activity due to the high degree of tumor malignancy, and the dose was increased to 10 mg/kg, while BT001021 significantly inhibited tumor growth.
  • the above results indicate that the BT001021 of the present invention has good pharmacological efficacy and excellent safety.
  • BT001021 In the subcutaneous xenograft models of Experimental Examples 1 and 2, the antitumor activity of BT001021 was significantly better than that of Immu-132 at the same dose. It is speculated that BT001021 has the potential to treat solid tumors, and it is expected to make more BT001021 than Immu-132 in clinical practice. Patients benefit.
  • Example 3 The effects of BT001021 and BT001035 on the proliferation inhibition of a tumor-bearing mouse model by subcutaneous transplantation of human tumor cells of HCC827 non-small cell lung cancer were evaluated. Specifically, in this experiment, a human tumor-bearing mouse model was constructed by subcutaneous transplantation of human non-small cell lung cancer cell line HCC827. After the tumor volume was grown to about 100 mm 3 , the cells were randomly divided into groups, and BT001021 and BT001035 were administered intravenously after grouping. Times, a total of 6 times, twice a week to measure tumor volume and animal body weight changes, calculate the efficacy of BT001021 and BT001035 on tumor-bearing mice (tumor inhibition effect).
  • HCC827 cells were cultured in a 1640 medium containing 10% fetal bovine serum at 37 ° C, 5% CO 2 . HCC827 cells in the exponential growth phase were collected, resuspended in PBS to a suitable concentration, and subcutaneously inoculated into female Balb/c-nu mice to establish a lung cancer xenograft model. When the average tumor volume was about 80 mm3, the tumors were randomly divided into normal saline group, positive drug Immu-132 (10 mg/kg, IV, BIW ⁇ 3W) group, BT001021 (10 mg/kg, IV, BIW ⁇ 3W).
  • BT001035 (10mg/kg, IV, BIW ⁇ 3W) group
  • the corresponding drugs were injected into the tail vein after grouping, and administered twice a week for 6 times.
  • the tumor volume and body weight of the mice were observed and periodically measured after administration, and the specific results are shown in Table 6, Figure 47A, and Figure 47B.
  • BT001021 and BT001035 can significantly inhibit the tumor growth of HCC827 non-small cell lung cancer xenograft model mice, and tumor regression occurs at the end of administration.
  • the antitumor activity is better than the positive group Immu-132, and all treatment groups are observed during the observation period. Animal-free death and significant animal weight loss did not show significant drug toxicity, and the mice were well tolerated for each evaluation drug during treatment.
  • BT001021 and BT001035 In this subcutaneous xenograft model, the antitumor activities of BT001021 and BT001035 were significantly better than Immu-132 at the same dose. It is speculated that BT001021 and BT001035 have the potential to treat solid tumors, and it is expected that BT001021 and BT001035 will be clinically compared with Immu-132. More patients benefit.
  • BT001036 inhibited tumor growth of tumor-bearing mice by subcutaneous transplantation of human tumor cells.
  • a human tumor-bearing mouse model of subcutaneously transplanted human gastric cancer cell line NCI-N87 was constructed, and the tumor volume was grown to about 140 mm 3 , and then randomly grouped, and BT001036 was administered intravenously after grouping, twice a week. A total of 6 times. Tumor volume and animal body weight changes were measured twice a week, and the drug effect (antitumor effect) of antibody drug conjugates on tumor-bearing mice was evaluated.
  • NCI-N87 cells were cultured in a 1640 medium containing 10% fetal bovine serum at 37 ° C, 5% CO 2 .
  • NCI-N87 cells in the exponential growth phase were collected, resuspended in PBS to a suitable concentration, and subcutaneously inoculated into female Balb/c-nu mice to establish a gastric cancer xenograft model.
  • the average tumor volume was about 140 mm 3
  • the tumors were randomly divided into normal saline group, BT001036 (1.5 mg/kg, IV, BIW ⁇ 3W) group, BT001036 (3 mg/kg, IV, BIW ⁇ 3W) group.
  • a subcutaneously transplanted human gastric cancer cell line NCI-N87 was used to construct a human gastric cancer subcutaneous xenograft model, and the efficacy of BT001036 in the NCI-N87 human gastric cancer tumor-bearing mouse model was evaluated.
  • mice The effect of BT001021 on the proliferation inhibition of a tumor-bearing mouse model by subcutaneous transplantation of human tumor cells of MDA-MB-231 breast cancer was evaluated. Specifically, in this experiment, a human tumor-bearing mouse model was constructed by subcutaneous transplantation of human breast cancer cell line MDA-MB-231. After the tumor volume was grown to about 130 mm 3 , the cells were randomly divided into groups, and BT001021 was administered intravenously after grouping. Times, a total of 6 times, while measuring tumor volume and animal body weight changes, calculate the efficacy of BT001021 on tumor-bearing mice (tumor inhibition effect).
  • NCI-MDA-MB-231 cells were cultured in RPMI 1640 medium containing 10% fetal calf serum at 37 ° C, 5% CO 2 .
  • MDA-MB-231 cells in the exponential growth phase were collected, resuspended in PBS to a suitable concentration, and subcutaneously inoculated into female Balb/c-nu mice to establish a lung cancer xenograft model.
  • the average tumor volume was about 130 mm 3
  • the tumors were randomly divided into normal saline group and BT001021 (3 mg/kg) group.
  • the corresponding drugs were injected into the tail vein after grouping, and the drug was administered twice a week for 6 times.
  • the tumor volume and body weight of the mice were observed and periodically measured after administration, and the specific results are shown in Table 8, Figures 49A and 49B.
  • BT001021 can significantly inhibit the tumor growth of MDA-MB-231 breast cancer xenograft model mice, and tumor regression occurred at the end of the drug administration. All the treatment groups showed no animal death and significant animal weight loss during the observation period, no performance. Significant drug toxicity was observed, and the mice were well tolerated for each of the evaluated drugs during the treatment.
  • BT001021 had significant anti-tumor activity. All the treatment groups showed no animal death and significant animal weight loss during the observation period, and showed no obvious drug toxicity. The mice were well tolerated for each evaluation drug during the treatment period. .
  • the liquid concentration is 20mg/ml, stored at -20 ° C, and diluted with a physiological saline solution to obtain a test solution;
  • T-030 was formulated into 1 mg/ml with dimethyl sulfoxide and diluted with physiological saline according to the dose to obtain a test solution.
  • mice Balb/c-nu mice (Beijing Weitong Lihua Experimental Animal Technology Co., Ltd., production license number: SCXK (Beijing) 2016-0011); gastric cancer cell line NCI-N87 (ATCC).
  • a tumor-bearing mouse with a tumor volume of 100 to 200 mm 3 in a random group (determining the number of samples according to the number of samples) was selected, 4 cells/group, and the administration route was a single administration of tail vein injection.
  • NCI-N87 cells were cultured in a 1640 medium containing 10% heat-inactivated fetal bovine serum at 37 ° C, 5% CO 2 .
  • NCI-N87 cells in the exponential growth phase were collected, resuspended in PBS to the appropriate concentration, and subcutaneously inoculated into Balb/c-nu mice to establish a lung cancer xenograft model.
  • the average tumor volume was about 100-200 mm 3
  • the tumors were randomly divided into normal saline group, T-030 (0.23 mg/kg, intravenous injection, single administration) group, BT001021 (10 mg/kg, intravenous injection).
  • T-030 0.23 mg/kg, intravenous injection, single administration
  • BT001021 10 mg/kg, intravenous injection
  • Serum and tumor tissues were collected from T-030 group at 1h, 2h, 4h, 8h, 24h and 72h after administration (T-030 was not detected in serum and tumor tissues 72h after administration, so it was not administered after administration Serum and tumor tissues were collected at 168h, and serum and tumor tissues were collected at 1h, 2h, 4h, 8h, 24h, 72h and 168h after administration.
  • the serum and tumor concentrations of T-030 were detected by LC-MS/MS. The specific results are shown in Table 9.
  • the dose of T-030 (0.23 mg/kg) was converted in an equimolar amount according to the dose of BT001021 (10 mg/kg).
  • BT001021 (10mg / kg) administration group AUC last in tumors and serum were 850.1h * ng / ml and 174.97h * ng / ml
  • T- 030 administration group AUC last in tumors and serum were 3.85 h*ng/ml and 5.58h*ng/ml
  • the comparison of the three showed that the exposure of T-030 in the BT001021 administration group was significantly higher than that in the T-030 administration group.
  • the exposure of active biomolecule T-030 in tumors of BT001021 group was significantly higher than that in serum.
  • the exposure of biomolecules in T-030 group was basically the same in serum and tumor, indicating antibody drug conjugate ( BT001021) has strong tumor tissue targeting.
  • the C max of the active biomolecule T-030 in tumor and serum in the BT001021 (10 mg/kg) administration group was 7.82 ng/ml and 11.7 ng/ml, respectively, and the active biomolecule T in the tumor and serum of the T-030 administration group.
  • the Cmax of -030 was 1.20 ng/ml and 1.81 ng/ml, respectively, indicating that the antibody drug conjugate (BT001021) has a higher concentration of active biomolecule (T-030) in tumor tissues and serum.
  • BT001021 (10mg / kg) administration group active biological molecule in the tumor T-030 to T 1/2 to 93.14h, T-030 tumors in the group administered active biological molecule in T-030 to T 1/2 2.55h .
  • BT001021 has significant tumor tissue targeting and good pharmacokinetic properties compared to the corresponding active biomolecule (T-030).
  • human gastric cancer cell line NCI-N87 to Balb/c-nu mice were subcutaneously transplanted to construct a tumor-bearing mouse model, and the tumor volume was grown to 100-200 mm 3 , and then randomly grouped, and a single intravenous administration of BT001021 after grouping and Immu-132.
  • concentrations of active biomolecules T-030 and SN-38 corresponding to BT001021 and Immu-132 in tumor tissues and serum were determined, and the pharmacokinetic behavior of antibody-conjugated drugs BT001021 and Immu-132 in tumor-bearing mice was evaluated.
  • the liquid concentration is 20mg/ml, stored at -20 ° C, and diluted with a physiological saline solution to obtain a test solution;
  • Immu-132 was diluted with physiological saline according to the dose to obtain a test solution.
  • mice Balb/c-nu mice (Beijing Weitong Lihua Experimental Animal Technology Co., Ltd., production license number: SCXK (Beijing) 2016-0011); gastric cancer cell line NCI-N87 (ATCC).
  • a tumor-bearing mouse with a tumor volume of 100 to 200 mm 3 in a random group (determining the number of samples according to the number of samples) was selected, 4 cells/group, and the administration route was a single administration of tail vein injection.
  • NCI-N87 cells were cultured in a 1640 medium containing 10% heat-inactivated fetal bovine serum at 37 ° C, 5% CO 2 .
  • NCI-N87 cells in the exponential growth phase were collected, resuspended in PBS to the appropriate concentration, and subcutaneously inoculated into Balb/c-nu mice to establish a lung cancer xenograft model.
  • the average tumor volume was about 100-200 mm 3 , they were randomly divided into BT001021 (5 mg/kg, intravenous, single administration) group and Immu-132 (5 mg/kg, intravenous injection, single administration) according to tumor size.
  • the corresponding drugs were injected into the tail vein, and serum and tumor tissues were collected at 2h, 24h, 48h and 72h after administration.
  • the concentrations of T-030 or SN-38 in serum and tumor were detected by LC-MS/MS.
  • Table 10 Pharmacokinetic parameters of T-030 and SN-38 in tumor and serum after intravenous administration of BT001021 and Immu-132 in tumor-bearing mice
  • BT001021 administration group AUC last small molecule toxins in tumor and serum were 427.2h * ng / ml, and 115.3h * ng / ml
  • Immu- 132 administration group AUC last small molecule toxins in tumor and serum were 116.8h*ng/ml and 422.7h*ng/ml.
  • BT001021 group administered a small molecule toxin in the tumor C max of 6.8ng / ml
  • Immu-132 administration group of small molecule toxin in the tumor C max respectively 2.8ng / ml. .
  • the above results indicate that BT001021 has better tumor tissue targeting and better pharmacokinetic properties than Immu-132, and has a better therapeutic window.

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