4-amino-2-[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]-2,7,8,9-tetrahydro-6-thia-1,2,3,5-tetraazabenzo[cd]azulene-7-carboxylic acid 以77%的产率得到4-amino-N-isopropyl-2-[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]-2,7,8,9-tetrahydro-6-thia-1,2,3,5-tetraazabenzo[cd]azulene-7-carboxamide