TERPENOID COMPOUNDS FROM PARENTUCELLIA LATIFOLIA

Article abstract of DOI:10.1016/0031-9422(90)83042-Y

Together with phytol, sitosterol acetate, α-tocopherylquinone annd sitosterol, the neutral part of Parentucellia latifolia afforded seven esters of diterpene alcohols: 7,13E-labdadien-15-ol acetate; ent-3,13E-clerodadien-15-ol acetat; di-<7,13E-labdadien-15-yl>malonate; 7,13E-labdadien-15-yl and ent-3,13E-clerodadien-15-yl malonic acid diester; di- malonate; 7,13E-labdadien-15-yl-methyl malonic acid diester; ent-3-13E-clerodadien-15-yl-methyl malonic acid diester.Three nor diterpenes: 14,15-dinor-7-labden-13-one; 14,15-dinor-ent-3-cleroden-13-one; 14,15-dinor-ent-2,4(18)clerodadien-13-one; and seven diterpene alcohols, five of them isolated as acetyl derivatives: 7,13E-labdadien-15-ol; ent-3,13E-clerodadien-15-ol; diacetate of 8,(17),13E-labdadien-7α,15-diol; 15-acetoxy-13E-labden-8β-ol; 15-acetoxy-13E-labden-8-ol and 15-acetoxy-ent-3,13E-clerodadien-2-one.