title: Cytotoxic diterpenoids and sesquiterpenoids from Pteris multifida.
abstract: Three new ent-kaurane diterpenoids, named pterokaurane M 1-M 3 ( 1- 3) and three new C 14 pterosin-sesquiterpenoids, named multifidoside A-C ( 4- 6), along with 18 known compounds, were isolated from the whole plants of Pteris multifida . The structures of 1- 6 were established using spectroscopic methods, including extensive 2D NMR and CD analyses. Compounds 4 and 5 showed cytotoxicity against the HepG2 tumor cell line with IC 50 values of less than 10 microM.
authors.affiliation: Central Research Institute of Shanghai Pharmaceutical Group, Shanghai 201203, People's Republic of China.
authors.forename: Xin
authors.initials: X
authors.lastname: Ge
authors.forename: Guan
authors.initials: G
authors.lastname: Ye
authors.forename: Ping
authors.initials: P
authors.lastname: Li
authors.forename: Wen-Jie
authors.initials: WJ
authors.lastname: Tang
authors.forename: Jin-Li
authors.initials: JL
authors.lastname: Gao
authors.forename: Wei-Min
authors.initials: WM
authors.lastname: Zhao
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D004224:Diterpenes; D045786:Diterpenes, Kaurane / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D004354:Drug Screening Assays, Antitumor; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D006801:Humans; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D032495:Pteris / Q000737:chemistry*
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D004224:Diterpenes; D045786:Diterpenes, Kaurane; D004365:Drugs, Chinese Herbal; C528159:pterokaurane M1; C528160:pterokaurane M2; C528161:pterokaurane M3