DITERPENOID, SESQUITERPENOID AND SECOIRIDOID GLUCOSIDES FROM ASTER-AURICULATUS

Two new diterpenoid glucosides, auriculatosides A and B, one new sesqu iterpenoid glucoside, auriculatoside C, as well as two known compounds , 3 beta-hydroxy-4(15), 10(14),11(13)-guaiatrien-12,6-olide-8 alpha-O- beta-D-glucopyranoside and gentiopicroside were isolated from roots of Aster auriculatus. On the basis of spectral evidence, auriculatosides A, B and C were identified as pimar-15(16)-beta-ene-8 beta,11 beta,20 -triol-7 beta-O-beta-D-glucopyranoside, pimar-15(16)-beta-ene-8 beta,1 1 alpha-diol-20-(3-hydroxy-3-methyl)-butanoyl-7 beta-O-beta-D-glucopyr anoside and 3 beta-hydroxy-4(15), 10(14), 11(13)-guaiatrien-12,6-olide -8 alpha-O-beta-D-(6'-O-formyl)-glucopyranoside, respectively. (C) 199 7 Elsevier Science Ltd. All rights reserved.