title: Bioactive compounds from Peperomia pellucida.
abstract: Five new compounds (1-5), including two secolignans, two tetrahydrofuran lignans, and one highly methoxylated dihydronaphthalenone, were isolated from the whole plant of Peperomia pellucida. These compounds were accompanied by the known peperomins A, B, C, and E, 7,8-trans-8,8'-trans-7',8'-cis-7,7'-bis(5-methoxy-3,4-methylenedioxyphenyl)-8-acetoxymethyl-8'-hydroxymethyltetrahydrofuran, 7,8-trans-8,8'-trans-7',8'-cis-7-(5-methoxy-3,4-methylenedioxyphenyl)-7'-(4-hydroxy-3,5-dimethoxyphenyl)-8,8'-diacetoxymethyltetrahydrofuran, sesamin, and isoswertisin. New structures were elucidated mainly by NMR and MS techniques, and anticancer activities evaluated in HL-60, MCF-7, and HeLa cell lines. Compound 1 and peperomin E show growth inhibitory effects on the three cancer cell lines with IC(50) values ranging between 1.4 and 9.1 and between 1.8 and 11.1 microM, respectively. Compound 2 has a weak suppressive activity on HL-60 cells (IC(50) = 10.8 microM), while 7,8-trans-8,8'-trans-7',8'-cis-7,7'-bis(5-methoxy-3,4-methylenedioxyphenyl)-8-acetoxymethyl-8'-hydroxymethyltetrahydrofuran exhibits estrogen-like properties (EC(50) = 3.1 microM) in CV-1 cells transfected with human estrogen receptor (ERalpha).
authors.affiliation: The National Center for Drug Screening, Chinese Academy of Sciences, Shanghai 201203, People's Republic of China.
authors.forename: Su
authors.initials: S
authors.lastname: Xu
authors.forename: Na
authors.initials: N
authors.lastname: Li
authors.forename: Meng-Meng
authors.initials: MM
authors.lastname: Ning
authors.forename: Cai-Hong
authors.initials: CH
authors.lastname: Zhou
authors.forename: Qiao-Rong
authors.initials: QR
authors.lastname: Yang
authors.forename: Ming-Wei
authors.initials: MW
authors.lastname: Wang
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D004354:Drug Screening Assays, Antitumor; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D047628:Estrogen Receptor alpha / Q000187:drug effects / Q000235:genetics; D004967:Estrogens / Q000494:pharmacology; D018922:HL-60 Cells; D006801:Humans; D020128:Inhibitory Concentration 50; D017705:Lignans / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D008156:Luciferases / Q000235:genetics / Q000378:metabolism; D015394:Molecular Structure; D009281:Naphthalenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D019906:Nuclear Magnetic Resonance, Biomolecular; D036941:Peperomia / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D014407:Tumor Cells, Cultured
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D004365:Drugs, Chinese Herbal; D047628:Estrogen Receptor alpha; D004967:Estrogens; D017705:Lignans; D009281:Naphthalenes; D008156:Luciferases