CAS: 153808-85-6; (S)-1-Cyclopropyl-8-(Difluoromethoxy)-6-Fluoro-7-(3-Methylpiperazin-1-yl)-4-Oxo-1,4-Dihydroquinoline-3-Carboxylic Acid

专利信息

专利号:US-2025170267-A1
优先权日:2022-02-28
标 题 :Antibody-drug conjugate precursor and intermediate for synthesis thereof
发明人：TSUZAKI YASUNORI; MIZUNO GEN; KASHIWAGI TAKAMASA; TANAKA MASAYUKI; SHIMIZU HAYATO; NONOUCHI SHIMPEI; MATSUSHITA TAKASHI; KIMURA TOMIO
权利人:UBE CORP
摘要:A method for improving the stability of an antibody-drug conjugate in a living body, and a conjugate precursor for producing a stabilized antibody-drug conjugate. An antibody-drug conjugate precursor represented by the following general formula (I) or a salt thereof, a synthetic intermediate thereof or a salt thereof, n Z-L-D  (I)n n where Z is a reactive group which can react with a functional group present in an antibody or a modified antibody; D is an antitumor drug residue in which one hydrogen atom or one hydroxy group is removed from any position of an antitumor drug molecule or an analog thereof or a derivative thereof; L is a linker which links Z to D; and at least any one of D and L has one or more lactonyl group(s) at any position(s) as substituent(s) or protecting group(s).