Add time:08/22/2019         Source:sciencedirect.com

A novel synthesis of the translocator protein (TSPO) ligand 7-chloro-N,N,5-trimethyl-4-oxo-3-phenyl-3,5-dihydro-4H-pyridazino[4,5-b]indole-1-acetamide (SSR180575, 3) was achieved in four steps from commercially available starting materials. Focused structure–activity relationship development about the pyridazinoindole ring at the N3 position led to the discovery of 7-chloro-N,N,5-trimethyl-4-oxo-3(6-fluoropyridin-2-yl)-3,5-dihydro-4H-pyridazino[4,5-b]indole-1-acetamide (14), a novel ligand of comparable affinity. Radiolabeling with fluorine-18 (18F) yielded 7-chloro-N,N,5-trimethyl-4-oxo-3(6-[18F]fluoropyridin-2-yl)-3,5-dihydro-4H-pyridazino[4,5-b]indole-1-acetamide ([18F]-14) in high radiochemical yield and specific activity. In vivo studies of [18F]-14 revealed this agent as a promising probe for molecular imaging of glioma.

We also recommend Trading Suppliers and Manufacturers of 2-CHLORO-N-(2-CHLORO-5-NITROPHENYL)ACETAMIDE (cas 108086-37-9). Pls Click Website Link as below: cas 108086-37-9 suppliers