Scheme 3.

Synthesis of prenylated monomethyl orcinol 6 a: a) LiBr (2.00 equiv), (nBu4N)2S2O8 (2.00 equiv), MeCN, 0 °C→r.t., 16 h; b) prenylzinc bromide (2.33 equiv) in THF, Xphos Pd G3 (2.00 mol %), XPhos (2.00 mol %), THF, r.t., 16 h. XPhos: 2‐Dicyclohexylphosphino‐2’,4’,6’‐triisopropylbiphenyl.