[2,4-dihydroxy-3,5-bis[(2-hydroxy-5-methylphenyl)methyl]phenyl]-phenylmethanone 、
3,5-bisbromomethyl-2,4-dihydroxybenzophenone 以8%的产率得到(17-benzoyl-4,16,18,25,26,27,28-heptahydroxy-11,23-dimethyl-5-pentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(25),3(28),4,6,9(27),10,12,15(26),16,18,21,23-dodecaenyl)-phenylmethanone