反应详情

The title compound was prepared from 4-chloro-3-nitro[1,5]naphthyridine and (S)-(+)-2-amino-1-propanol following Parts A through G listed for the preparation of Example 1 with the modifications that in Part E the reaction with tetrabutylammonium fluoride was carried out in CH2Cl2 as the solvent, Part F was carried out in chloroform as the solvent, and Part G was carried out in 1,2-dichloroethane as the solvent. Chromatography (SiO2, 10-30% CMA/CHCl3) gave an off-white solid. Recrystallization from 1,2-dichloroethane gave (11S)-11-methyl-10,11-dihydro-8H-[1,4]oxazino[4′,3′:1,2]imidazo[4,5-c][1,5]naphthyridin-6-amine (0.68 g) as a white crystalline solid, mp 240-242° C.

1. customlisted for the preparation of Example 1 with the modifications that in Part E
2. customRecrystallization from 1,2-dichloroethane