1-(6-hydroxy-2,3-dihydro-1-benzofuran-5-yl)-3-(4-methoxybenzyl)-1,3-dihydro-2H-pyrrolo[3,2-f]quinolin-2-one 、
1-(diphenylmethyl)-3-(2-hydroxy-4-methoxy-5-methylphenyl)-1,3-dihydro-2H-indol-2-one 以3′-(4-methoxybenzyl)-5,6-dihydrospiro[benzo[1,2-b:5,4-b′]difuran-3,1′-pyrrolo[3,2-f]quinolin]-2′(3′H)-one was obtained (9%) as a yellow solid的产率得到3'-(4-methoxybenzyl)-5,6-dihydrospiro[benzo[1,2-b:5,4-b']difuran-3,1'-pyrrolo[3,2-f]quinolin]-2'(3'H)-one