How is (2R,2'R,3R,3'R,4R)-2,2'-Bis(3,4-dihydroxyphenyl)-3',5,5',7,7'-pentahydroxy-3,3',4,4'-tetrahydro-2H,2'H-4,8'-bichromen-3-yl 3,4,5-trihydroxybenzoate (CAS: 109280-47-9) typically synthesized?

This compound is typically synthesized via a multistep synthesis involving the condensation of 3,4-dihydroxybenzoic acid and 2,2'-bichromen-3-yl 3,4,5-trihydroxybenzoate. The process involves the use of catalytic amounts of an acid or base, and the reaction is performed at room temperature. Selectivity and yield can be improved by optimizing reaction conditions and using appropriate protecting groups.