9-hydroxy-3,3-dimethyl-3H-naphtho[2,1-b]pyran-7,10-dione 、 2,3-dichloro-6-isopropyloxy-1,4-naphthoquinone 在
N,N-二异丙基乙胺 作用下,
以
乙二醇二甲醚 为溶剂,
反应 70.0h,
以8%的产率得到9-hydroxy-8-(3'-(9''-hydroxy-3'',3''-dimethyl-7'',10''-dioxo-7'',10''-dihydro-3''H-naphtho[2,1-b]pyran-8''-yl)-1,4'-dioxo-6'-isopropyloxy-1',4'-dihydronaphthalen-2'-yl)-3,3-dimethyl-3H-naphtho[2,1-b]pyran-7,10-dione