- CROSS-LINKED PYRROLOBENZODIAZEPINE DIMER (PBD) DERIVATIVE AND ITS CONJUGATES
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A novel cross-linked cytotoxic agents, pyrrolobenzo-diazepine dimer (PBD) derivatives, and their conjugates to a cell-binding molecule, a method for preparation of the conjugates and the therapeutic use of the conjugates.
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- CONJUGATION LINKERS CONTAINING 2,3-DIAMINOSUCCINYL GROUP
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Provided is a conjugate of a cytotoxic drug/molecule to a cell-binding molecule with a bis-linker (adual-linker) containing a 2, 3-diaminosuccinyl group. It also relates to preparation of the conjugate of a cytotoxic drug/molecule to a cell-binding molecule with the bis-linker, particularly when the drug having functional groups of amino, hydroxyl, diamino, amino-hydroxyl, dihydroxyl, carboxyl, hydrazine, aldehyde and thiol for conjugation with the bis-linker in a specific manner, as well as the therapeutic use of the conjugates.
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- ISOQUINOLIDINOBENZODIAZEPINE (IQB)-1(CHLOROMETHYL)-2,3-DIHYDRO-1H-BENZO[E]INDOLE (CBI) DIMERS
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Provided herein are isoquinolidinobenzodiazepine (IQB)-1(chloromethyl)-2,3-dihydro-1H-benzo[e]indole (CBI) dimers, antibody-drug conjugates comprising them and methods of use for killing cells and treating disease.
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- PYRROLOBENZODIAZEPINES AND CONJUGATES THEREOF
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Conjugates and compounds for making conjugates which are PBD molecules linked via the N10 position are disclosed, along with the use of the conjugates for treating proliferative diseases, including cancer.
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- PYRROLOBENZODIAZEPINE CONJUGATES
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A compound of formula (I) : (I) and its conjugates.
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- Scale-up Synthesis of Tesirine
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This work describes the enabling synthesis of tesirine, a pyrrolobenzodiazepine antibody-drug conjugate drug-linker. Over the course of four synthetic campaigns, the discovery route was developed and scaled up to provide a robust manufacturing process. Early intermediates were produced on a kilogram scale and at high purity, without chromatography. Midstage reactions were optimized to minimize impurity formation. Late stage material was produced and purified using a small number of key high-pressure chromatography steps, ultimately resulting in a 169 g batch after 34 steps. At the time of writing, tesirine is the drug-linker component of eight antibody-drug conjugates in multiple clinical trials, four of them pivotal.
- Tiberghien, Arnaud C.,Von Bulow, Christina,Barry, Conor,Ge, Huajun,Noti, Christian,Collet Leiris, Florence,McCormick, Marc,Howard, Philip W.,Parker, Jeremy S.
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p. 1241 - 1256
(2018/09/06)
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- Synthesis and in vitro evaluation of SG3227, a pyrrolobenzodiazepine dimer antibody-drug conjugate payload based on sibiromycin
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A novel pyrrolobenzodiazepine dimer payload, SG3227, was rationally designed based on the naturally occurring antitumour compound sibiromycin. SG3227 was synthesized from a dimeric core in an efficient fashion. An unexpected room temperature Diels-Alder reaction occurred during the final step of the synthesis and was circumvented by use of an iodoacetamide conjugation moiety in place of a maleimide. The payload was successfully conjugated to trastuzumab and the resulting ADC exhibited potent activity against a HER2-expressing human cancer cell line in vitro.
- Kemp, Gary C.,Tiberghien, Arnaud C.,Patel, Neki V.,D'Hooge, Francois,Nilapwar, Sanjay M.,Adams, Lauren R.,Corbett, Simon,Williams, David G.,Hartley, John A.,Howard, Philip W.
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p. 1154 - 1158
(2017/06/21)
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- PYRROLOBENZODIAZEPINE CONJUGATES
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A conjugate of formula (I), wherein L is a Ligand unit, D is a Drug Linker unit of formula (II), wherein either: (a) R10 and R11 form a nitrogen-carbon double bond between the nitrogen and carbon atoms to which they are bound; or (b)
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- PYRROLOBENZODIAZEPINE ANTI-HER2 ANTIBODY CONJUGATES
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A conjugate of formula (I) L - (DL)p (I) wherein L is an antibody (Ab) which binds HER2, D is a Drug Linker unit of formula (A) wherein p is an integer of from 1 to 20.
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- ANTIBODIES AND ANTIBODY-DRUG CONJUGATES
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This application provides antibodies and antigen binding fragments thereof which are capable of specifically binding the 5T4 cell surface antigen, antibody-drug conjugates, and antibody-imaging agent conjugates, as well as means and methods for producing and using them.
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- HUMANIZED ANTI-TN-MUC1 ANTIBODIES AND THEIR CONJUGATES
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Humanized anti-Tn-MUC1 antibodies and conjugates thereof. Conjugates comprising pyrrolobenzodiazepines (PBDs) having a labile protecting group in the form of a linker to the antibody are described.
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- NOVEL ANTIBODY CONJUGATES AND USES THEREOF
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Provided are novel antibody drug conjugates (ADCs), and methods of using such ADCs to treat proliferative disorders.
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- SYNTHESIS METHOD AND INTERMEDIATES USEFUL IN THE PREPARATION OF PYRROLOBENZODIAZEPINES
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A compound of formula I wherein: R7 is selected from: ORA, where RA is selected from C1-4 saturated alkyl, optionally substituted by phenyl, which may bear a chloro substituent, pyridyl and furanyl; chloro; NH2; -CH2-O-C(=O)Me; R8 is OProt°, where Prot° is a silicon-based oxygen protecting group orthogonal to Rc; R9 is selected from H, methyl and methoxy; Rs is selected from CF3, (CF2)3CF3, CH3 and (formula 2) and Rc is selected from: (i) -C(=O)-ORC1, where RC1 is a saturated C1-4 alkyl group; (ii) -CH2-O-C(=0)RC2, where RC2 is methyl or phenyl; (iii) -CH2-O-Si-(RSi1)(RSi2)(RSi3), where RSi1, RSi2, RSi3 are independently selected from C1-6 a saturated alkyl group and a phenyl group; and (iv) -C(-YRC3)(-YRC4) where each Y is independently O or S, and where RC3 and RC4 are independently a saturated C1-4 alkyl group, or together form a C2-3 alkylene.
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