ANTIBODY DRUG CONJUGATES (ADCS) AND ANTIBODY PRODRUG CONJUGATES (APDCS) WITH ENZYMATICALLY CLEAVABLE GROUPS
申请人:Bayer Pharma Aktiengesellschaft
公开号:US20180169256A1
公开(公告)日:2018-06-21
The present invention relates to novel binder-prodrug conjugates (APDCs) where binders are conjugated with inactive precursor compounds of kinesin spindle protein inhibitors, and to antibody-drug conjugates ADCs and to processes for producing these APDCs and ADCs.
Process for preparing 4-mercaptopyrrolidine intermediate compounds and a
申请人:Tanabe Seiyaku Co., Ltd.
公开号:US05629419A1
公开(公告)日:1997-05-13
An improved process for preparing a 4-mercaptopyrrolidine compound [I]: ##STR1## wherein R is H, lower alkyl or lower alkanoyl, R.sup.1 is H or SH-protecting group, and X is O or S, which comprises reacting halogenobutyric acid compound [VI], or a salt thereof, with amine compound [VII], or a salt thereof, and if necessary, followed by thiocarbonylating the product and/or removing the protecting group, said 4-mercaptopyrrolidine compound [I] being useful as intermediate for carbapenem antibacterial agents.
Facile Synthesis of (R)-4-Mercaptopyrrolidine-2-thione from L-Aspartic Acid
作者:Masahiko SEKI、Toshiaki SHIMIZU
DOI:10.1271/bbb.65.973
日期:2001.1
prepared from L-aspartic acid, with potassium thiobenzoate provided (R)-benzoylthio derivative 5 with complete inversion of the configuration. Compound 5 was converted, via iodide 6c, to (R)-4-amino-3-benzoylthiobutyric acid 8b. (R)-4-Mercapto pyrrolidine-2-thione 1 was readily obtained from 8b through cyclization with acetic anhydride, thionation with Lawesson's reagent and facile removal of the S-benzoyl
Practical Synthesis of (<i>R</i>)-4-Mercaptopyrrolidine-2-thione from <scp>l</scp>-Aspartic Acid. Preparation of a Novel Orally Active 1-β-Methylcarbapenem, TA-949
作者:Masahiko Seki、Takeshi Yamanaka、Kazuhiko Kondo
DOI:10.1021/jo991461+
日期:2000.1.1
High-yield amination and cyclization of the chloride 15 to the pyrrolidin-2-one 16 was accomplished by a simple treatment with ammonia. Thiation of 16 and the Birch reduction of the resultant thiolactam 18 provided the C-2 sidechain 2 in high yield with the asymmetric center retained as such. The sidechain 2 was installed into the 1-beta-methylcarbapenem skeleton either by coupling with the vinyl phosphate