p. 2804 - 2812
(2006)1,6-dibenzyl-2,3,7,8-tetrahydroxy-chromeno[5,4,3-cde]chromene-5,10-dione
2,3,7,8-tetrakis-benzoyloxy-1,6-dibenzyl-chromeno[5,4,3-cde]chromene-5,10-dione
2,3,7,8-tetraacetoxy-1,6-dibenzyl-chromeno[5,4,3-cde]chromene-5,10-dione
1,6-dibenzyl-2,3,7,8-tetramethoxy-chromeno[5,4,3-cde]chromene-5,10-dione
dibenzyl 2,2',3,3',4,4'-hexabenzyloxy-5,5'-dibenzyl-1,1'-diphenyl-6,6'-dicarboxylate