Cywin Charles L, Zhao Bao-Ping, McNeil Daniel W, Hrapchak Matt, Prokopowicz Anthony S, Goldberg Daniel R, Morwick Tina M, Gao Amy, Jakes Scott, Kashem Mohammed, Magolda Ronald L, Soll Richard M, Player Mark R, Bobko Mark A, Rinker James, DesJarlais Renee L, Winters Michael P
Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, CT 06801-0368, USA.
Bioorg Med Chem Lett. 2003 Apr 17;13(8):1415-8. doi: 10.1016/s0960-894x(03)00163-x.
The discovery of novel 5,7-disubstituted[1,6]naphthyridines as potent inhibitors of Spleen Tyrosine Kinase (SYK) is discussed. The SAR reveals the necessity for a 7-aryl group with preference towards para substitution and that this in combination with 5-aminoalkylamino substituents further improved the potency of the compounds. The initial SAR as well as a survey of the other positions is discussed in detail.