HETEROARYL SULFONE-BASED CONJUGATION HANDLES, METHODS FOR THEIR PREPARATION, AND THEIR USE IN SYNTHESIZING ANTIBODY DRUG CONJUGATES
申请人:PFIZER INC.
公开号:US20210308276A1
公开(公告)日:2021-10-07
The present invention is directed to novel heteroaryl sulfone-based conjugation handles of the formula: (wherein R
1
, R
2
, Het, D, E, X, Y, Z, m, n, p, q, r, s and t are as defined herein), methods for their preparation, their use in synthesizing antibody drig conjugates, and the resulting antibody drig conjugates made with components having heteroaryl sulfone-based conjugation handles.