Leptomycin derivatives having a moiety, such as a sulfide or a disulfide, that can conjugate to a cell binding reagent such as an antibody are disclosed. The therapeutic use of such leptomycin derivative conjugates is also described; such conjugates have therapeutic use because they can deliver cytotoxic leptomycin derivatives to a specific cell population in a targeted fashion.
Design, synthesis and evaluation of novel, potent DNA alkylating agents and their antibody-drug conjugates (ADCs)
作者:Emily E. Reid、Katie E. Archer、Manami Shizuka、Molly A. McShea、Erin K. Maloney、Olga Ab、Leanne Lanieri、Alan Wilhelm、Jose F. Ponte、Nicholas C. Yoder、Ravi V.J. Chari、Michael L. Miller
DOI:10.1016/j.bmcl.2019.07.031
日期:2019.9
Antibody-drug conjugates (ADCs) incorporating potent indolinobenzodiazepine (IGN) DNA alkylators as the cytotoxic payload are currently undergoing clinical evaluation. The optimized design of these payloads consists of an unsymmetrical dimer possessing both an imine and an amine effectively eliminating DNA crosslinking and demonstrating improved tolerability in mice. Here we present an alternate approach to generating DNA alkylating ADCs by linking the IGN monomer with a biaryl system which has a high DNA binding affinity to potentially enhance tolerability. These BIA ADCs were found to be highly cytotoxic in vitro and demonstrated potent antitumor activity in vivo.
[EN] BENZODIAZEPINE DERIVATIVES<br/>[FR] DÉRIVÉS DE BENZODIAZÉPINE
申请人:IMMUNOGEN INC
公开号:WO2019133652A1
公开(公告)日:2019-07-04
The invention relates to novel benzodiazepine derivatives with antiproliferative activity and more specifically to novel benzodiazepine compounds of formulae (I), (II) and (III). The invention also provides conjugates of the benzodiazepine compounds linked to a cell-binding agent. The invention further provides compositions and methods useful for inhibiting abnormal cell growth or treating a proliferative disorder in a mammal using the compounds or conjugates of the invention.