7,12-dihydroxy-11-methoxy-2-methyl-6H-benzo(b)-naphtho(2,3-d)pyran-6-one

2-Methyl-7,11-dimethoxy-12-(benzyloxy)-6H-benzo[b]-naphtho[2,3-d]pyran-6-one

12-(benzyloxy)-7,11-dimethoxy-2-methyl-6H-naphtho[2,3-c]chromen-6-one

Methyl 3-(2-Methoxy-5-methylphenyl)-1,5-dimethoxy-4-(benzyloxy)-2-naphthoate

6-hydroxy-10-methoxy-1-methylbenzo[h]chromeno[5,4,3-cde]chromene-5,12-dione