Four diterpenoids, including a new ent-kaurane diterpene (1), were isolated from the rhizome of Aralia fargesii Franch. On the basis of chemical and spectral evidence (IR, EI-MS, HREI-MS, H-1-NMR, C-13-NMR and HMQC), ...Four diterpenoids, including a new ent-kaurane diterpene (1), were isolated from the rhizome of Aralia fargesii Franch. On the basis of chemical and spectral evidence (IR, EI-MS, HREI-MS, H-1-NMR, C-13-NMR and HMQC), the structure of compound 1 was established to be 17-acetoxy-16alpha-ent-kauran-19-oic acid The other three known compounds were identified as ent-pimera-8(14) 15-dien-19-oic acid (2), 16alpha-hydroxy-( -)-kauran-19-oic acid (3) and 16alpha-17-dihydroxy-ent-kauran-19-oic acid (4). The three known diterpenoids were obtained from this plant for the first time.展开更多
文摘Four diterpenoids, including a new ent-kaurane diterpene (1), were isolated from the rhizome of Aralia fargesii Franch. On the basis of chemical and spectral evidence (IR, EI-MS, HREI-MS, H-1-NMR, C-13-NMR and HMQC), the structure of compound 1 was established to be 17-acetoxy-16alpha-ent-kauran-19-oic acid The other three known compounds were identified as ent-pimera-8(14) 15-dien-19-oic acid (2), 16alpha-hydroxy-( -)-kauran-19-oic acid (3) and 16alpha-17-dihydroxy-ent-kauran-19-oic acid (4). The three known diterpenoids were obtained from this plant for the first time.