Parishins B and C from rhizomes of Gastrodia elata

Two new glucosides, 1,2- and 1,3-bis[4-(β-d-glucopyranosyloxy)benzyl]citrate, named parishins B and C, together with tris [4-(β-d-glucopyranosyloxy)benzyl] citrate (parishin) have been isolated from the rhizomes of Gastrodia elata, and their structures elucidated on the basis of spectroscopic evidence.