4-di(tert-butoxycarbonyl)amino-2-(4-methoxy-3,5-dimethyl-pyridin-2-ylmethyl)-8-oxo-2,7,8,9-tetrahydro-6-thia-1,2,3,5-tetraazabenzo[cd]azulene 以53%的产率得到2-[(4-Methoxy-3,5-dimethylpyridin-2-yl)methyl]-8-pyrrolidin-1-yl-2,7,8,9-tetrahydro-6-thia-1,2,3,5-tetraazabenzo[cd]azulen-4-amine hydrochloride