5'-hydroxy-1,3,3-trimethylspiro[indoline-2,3'-[3H]naphtho[1,2-b][1,4]oxazine] 生成 8-Hydroxy-2-[(Z)-1,3,3-trimethyl-1,3-dihydro-indol-(2E)-ylidenemethylimino]-2H-naphthalen-1-one 、 8-Hydroxy-2-[(E)-1,3,3-trimethyl-1,3-dihydro-indol-(2E)-ylidenemethylimino]-2H-naphthalen-1-one 、 8-Hydroxy-2-[(Z)-1,3,3-trimethyl-1,3-dihydro-indol-(2Z)-ylidenemethylimino]-2H-naphthalen-1-one 、 8-Hydroxy-2-[(E)-1,3,3-trimethyl-1,3-dihydro-indol-(2Z)-ylidenemethylimino]-2H-naphthalen-1-one