3,5-bis(2,5,6-trimethyl-3-indolyl)-2(3H)-furanone 、
3,5-bis(1-ethyl-2-methyl-3-indolyl)-2(3H)-furanone 在
3,5-Bis(1-ethyl-2-methyl-1H-indol-3-yl)furan-2(5H)-one 作用下,
以there is obtained 3,5-bis-(2,5,6-trimethyl-3-indolyl)-2(5H)-furanone (Formula IV: R=H; R1 =CH3 ; Y=5,6-(CH3)2)的产率得到3,5-Bis(1-ethyl-2-methyl-1H-indol-3-yl)furan-2(5H)-one