摘要
Three new diterpenoids, gesneroidins DP (1-3), were isolated from Isodon gesneroides. The structure was determined as 3 beta, 7 beta, 11 beta, 15 beta-tetraacetoxy-ent-kaur-16-en-6-one; 15 beta-hydroxy-1 alpha, 3 beta, 6 alpha, 7 beta, 11 beta-pentaacetoxy-ent-kaur-16-ene; 6 alpha,11 beta-dihydroxy-3 beta, 7 beta-diacetoxy-ent-kaur-16-en-15-one based on 1D and 2D NMR techniques (COSY, NOESY, HXTCOR, COLOC).
Three new diterpenoids, gesneroidins DP (1-3), were isolated from Isodon gesneroides. The structure was determined as 3 beta, 7 beta, 11 beta, 15 beta-tetraacetoxy-ent-kaur-16-en-6-one; 15 beta-hydroxy-1 alpha, 3 beta, 6 alpha, 7 beta, 11 beta-pentaacetoxy-ent-kaur-16-ene; 6 alpha,11 beta-dihydroxy-3 beta, 7 beta-diacetoxy-ent-kaur-16-en-15-one based on 1D and 2D NMR techniques (COSY, NOESY, HXTCOR, COLOC).