Discovery and SAR of novel Naphthyridines as potent inhibitors of spleen tyrosine kinase (SYK)
作者:Charles L Cywin、Bao-Ping Zhao、Daniel W McNeil、Matt Hrapchak、Anthony S Prokopowicz、Daniel R Goldberg、Tina M Morwick、Amy Gao、Scott Jakes、Mohammed Kashem、Ronald L Magolda、Richard M Soll、Mark R Player、Mark A Bobko、James Rinker、Renee L DesJarlais、Michael P Winters
DOI:10.1016/s0960-894x(03)00163-x
日期:2003.4
The discovery of novel 5,7-disubstituted[1,6]naphthyridines as potent inhibitors of SpleenTyrosineKinase (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
3-Cyano-2-(phenylethynyl)pyridine (1) was cyclized intramolecularly under acidic conditions to give 1,6-naphthyridin-5(6H)-one (2) and 5H-pyrano[4,3-b]pyridin-5-one (4). Pyranopyridine 4 was readily transformed to 2 or naphthyridinone 9 having an alkyl substituent at 6-position.
作者:John G Montana、George M Buckley、Nicola Cooper、Hazel J Dyke、Lewis Gowers、Joanna P Gregory、Paul G Hellewell、Hannah J Kendall、Christopher Lowe、Robert Maxey、Jadwiga Miotla、Robert J Naylor、Karen A Runcie、Bishwa Tuladhar、Julie B.H Warneck
DOI:10.1016/s0960-894x(98)00491-0
日期:1998.10
A series of novel selective phosphodiesterase 4 (PDE4) inhibitors has been developed which displays activity both in vitro and in vivo. These compounds possess good selectivity for the catalytic site of PDE4 over the high affinity Rolipram binding site. In vivo studies demonstrate a reduced propensity to display the emetic side effects which are commonly observed with PDE4 inhibitors. (C) 1998 Elsevier Science Ltd. All rights reserved.
Platinum(II)-catalyzed intramolecular cyclization of alkynylbenzonitriles: synthesis of 1-alkoxyisoquinolines and isoquinolones
作者:Jim Li、Lijing Chen、Elbert Chin、Alfred S. Lui、Hasim Zecic
DOI:10.1016/j.tetlet.2010.09.136
日期:2010.12
A facile synthesis of a series of 1-alkoxyisoguinolines and (2H)-isoguinolones by an intramolecular 6-endo-dig cyclization of ortho-alkynylbenzonitriles in the presence of a catalytic amount of hydrido(dimethylphosphinous acid-kappa P)[hydrogen bis(dimethylphosphinito-kappa P)]platinum(II) in various alcohols at 65-90 degrees C is described for the first time. (C) 2010 Elsevier Ltd. All rights reserved.