3-(4-(methylthio)-2,5-diphenylfuran-3-yl)-1H-indole 、 (3-(Hydroxy(phenyl)methyl)-1H-indol-2-yl)diphenylmethanol 在
2,6-bis-(4-chloro-phenyl)-4-oxo-3,5-dioxa-4λ
5-phospha-cyclohepta[2,1-
a;3,4-
a']dinaphthalen-4-ol 作用下,
以
1,2-二氯乙烷 为溶剂,
以81 %的产率得到(S
a,S)-13-(4-(methylthio)-2,5-diphenylfuran-3-yl)-6,12,12-triphenyl-11,12-dihydro-6H-pyrido[1,2-a:4,5-b']diindole