ANTI-CD123 ANTIBODIES AND CONJUGATES AND DERIVATIVES THEREOF
申请人:ImmunoGen, Inc.
公开号:EP3842459A1
公开(公告)日:2021-06-30
The present disclosure generally relates to antibodies, antigen-binding fragments thereof, polypeptides, and immunoconjugates that bind to CD123 antigen (the α chain of the interleukine 3 receptor, or IL-3Rα). The present disclosure also relates to methods of using such CD123-binding molecules for diagnosing and treating diseases, such as B-cell malignancies.
An object of the present invention is to provide methods of discovering drugs effective for tough targets, which have conventionally been discovered only with difficulty. The present invention relates to novel methods for cyclizing peptide compounds, and novel peptide compounds and libraries comprising the same, to achieve the above object.
Synthesis of stereoisomeric alanine containing peptide derivatives.
As analogues of D-cycloserine, the part structure of penicillin and D-D carboxypeptidase substrate of peptidoglycan of bacterial cell wall, D-alanine derivatives and their stereoisomers and D-alanyl-D-alanine derivatives and their stereoisomers (R1-Ala-R2, R1-Ala-Ala-R2 : R1=Z, H ; R2=NHNH2, NHCH3, NHCH2CH2OH) were synthesized. All compounds obtained did not show any antibacterial activity against Staphylococcus aureus, Sarcina lutea, Pseudomonas aeruginosa and Escherichia coli.