Ethyl 3,9-dihydroxy-9-methyl-7-phenyl-7,8,10-trihydro-6H-dibenzo[b,d]pyran-6-one-8-carboxylate(C23H22O6,Mr = 394.42) has been synthesized and its structure was
Pyrenes are an important group of polycyclic aromatic hydrocarbons(PAHs). In order to expand the diversity of conjugate compounds based on pyrene, two new isome