218787-58-7Relevant articles and documents
Discovery of Pyrophosphate Diesters as Tunable, Soluble, and Bioorthogonal Linkers for Site-Specific Antibody-Drug Conjugates
Kern, Jeffrey C.,Cancilla, Mark,Dooney, Deborah,Kwasnjuk, Kristen,Zhang, Rena,Beaumont, Maribel,Figueroa, Isabel,Hsieh, SuChun,Liang, Linda,Tomazela, Daniela,Zhang, Jeffrey,Brandish, Philip E.,Palmieri, Anthony,Stivers, Peter,Cheng, Mangeng,Feng, Guo,Geda, Prasanthi,Shah, Sanjiv,Beck, Andrew,Bresson, Damien,Firdos, Juhi,Gately, Dennis,Knudsen, Nick,Manibusan, Anthony,Schultz, Peter G.,Sun, Ying,Garbaccio, Robert M.
, p. 1430 - 1445 (2016)
As part of an effort to examine the utility of antibody-drug conjugates (ADCs) beyond oncology indications, a novel pyrophosphate ester linker was discovered to enable the targeted delivery of glucocorticoids. As small molecules, these highly soluble phosphate ester drug linkers were found to have ideal orthogonal properties: robust plasma stability coupled with rapid release of payload in a lysosomal environment. Building upon these findings, site-specific ADCs were made between this drug linker combination and an antibody against human CD70, a receptor specifically expressed in immune cells but also found aberrantly expressed in multiple human carcinomas. Full characterization of these ADCs enabled procession to in vitro proof of concept, wherein ADCs 1-22 and 1-37 were demonstrated to afford potent, targeted delivery of glucocorticoids to a representative cell line, as measured by changes in glucocorticoid receptor-mediated gene mRNA levels. These activities were found to be antibody-, linker-, and payload-dependent. Preliminary mechanistic studies support the notion that lysosomal trafficking and enzymatic linker cleavage are required for activity and that the utility for the pyrophosphate linker may be general for internalizing ADCs as well as other targeted delivery platforms.
Efficient Route to Deuterated Aromatics by the Deamination of Anilines
Burglova, Kristyna,Okorochenkov, Sergei,Hlavac, Jan
, p. 3342 - 3345 (2016/07/26)
One-step replacement of NH2 groups in ring-substituted anilines by deuterium is reported. Approaches comprising both solid-phase and solution-phase syntheses can be used on a large variety of substrates. The method uses diazotization in a mixture of water and either dichloromethane or chloroform, which serve as a source of hydrogen. This protocol can be used as a general method for fast and easy incorporation of deuterium into an aromatic system using deuterated chloroform.
Curtius degradation in solid-phase synthesis
Richter, Lutz S.,Andersen, Stina
, p. 8747 - 8750 (2007/10/03)
An optimized and broadly applicable procedure for the solid-phase synthesis of primary amines and carbamates via Curtius-degradation of carboxylic acids has been developed. The targeted primary amines and carbamates were obtained in excellent purity and high overall yields.
