[EN] DERIVATIVES OF DOLASTATIN 10 AND USES THEREOF<br/>[FR] DÉRIVÉS DE DOLASTATINE 10 ET UTILISATIONS DE CEUX-CI
申请人:NEWBIO THERAPEUTICS INC
公开号:WO2016192527A1
公开(公告)日:2016-12-08
Derivatives of dolastatin 10 and uses thereof, the structures of which are shown as formula I, II, III and IV are provided.
多拉司丁10衍生物及其用途,其结构如公式I、II、III和IV所示。
[EN] OXADIAZOLE LINKERS AND USE THEREOF<br/>[FR] LIEURS D'OXADIAZOLE ET UTILISATION ASSOCIÉE
申请人:NEWBIO THERAPEUTICS INC
公开号:WO2019011078A1
公开(公告)日:2019-01-17
Provided is oxadiazole linkers and use thereof, more specifically to the compounds represented by formulas (I), (II), and (III), and their use in the preparation of antibody-drug conjugates (ADCs). The ADCs obtained from said oxadiazole linkers have high homogeneity and stability, and could be used effectively for the treatment of various diseases including tumors. The definition of the groups in formula (I), (II), and (III) is the same as that in the description.
The present invention describes the preparation of maytansinol by methods that minimize processing steps, and reduce solvent volumes, making the process more efficient, and scaleable. This process comprises a step of converting bridged acetals of maytansinol to maytansinol. The simplified processing also aids in lowering the potential for human exposure to chemicals. Also provided is an isolated C3 to C9 bridged acetal of maytansinol.
A type of trimaleimide linkers and uses thereof are disclosed. The trimaleimide linkers can be applied for preparation of antibody-drug conjugate as shown by formula I: L-(T-A-D)n I wherein, L is an antibody, antibody fragment or protein; T is a trimaleimide linker; A is a cleavable linker group or a noncleavable linker; D is a drug; n is an integer ranging from 1 to 8.
本发明公开了一种三马来酰亚胺连接体及其用途。三马来酰亚胺连接体可用于制备抗体-药物共轭物,如式 I 所示:L-(T-A-D)n I 其中,L 是抗体、抗体片段或蛋白质;T 是三马来酰亚胺连接体;A 是可裂解连接基团或不可裂解连接基团;D 是药物;n 是 1 到 8 的整数。
Process for preparing cell-binding agent-cytotoxic agent conjugates
申请人:IMMUNOGEN, INC.
公开号:US10413615B2
公开(公告)日:2019-09-17
The present invention provides a novel process for preparing a cell-binding agent cytotoxic agent conjugate. The process comprises the steps of: (a) reacting a cytotoxic agent with a bifunctional crosslinking reagent represented by the structural formula (I) or a salt thereof, in a buffer solution comprising a buffering agent to provide a first mixture comprising a cytotoxic agent-linker compound, wherein the buffer solution has high buffer capacity; and (b) reacting the first mixture comprising the cytotoxic agent-linker compound from step (a) with a cell-binding agent in a solution having a pH of 4 to 9 to provide a second mixture comprising the cell-binding agent cytotoxic agent conjugate. The cell-binding agent cytotoxic agent conjugates prepared according to the processes described herein are also included in the present invention.