title: Diterpenoids, norditerpenoids, and secosteroids from the Formosan soft coral Cespitularia hypotentaculata.
abstract: Four new cespitularane diterpenes, cesputularins I-L (1-4), two new norverticillane norditerpenes, cespitularins M and N (5 and 6), two new verticillane diterpenes, cespitularins O and P (7 and 8), a new norditerpene, cespitularin Q (9) (having a novel carbon skeleton), a new xenicane diterpene, cespitolide (10), and two new secosteroids, 3beta,11-dihydroxy-5beta,6beta-epoxy-9,11-secocholestan-9-one (11) and 3beta,11-dihydroxy-5beta,6beta-epoxy-9,11-secogorgostan-9-one (12), were isolated from the methylene chloride solubles of the Formosan soft coral Cespitularia hypotentaculata Roxas. The structures were elucidated by extensive spectroscopic analysis, and their cytotoxicity against selected cancer cells was measured in vitro.
authors.affiliation: Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan, Republic of China. yihduh@mail.nsysu.edu.tw
authors.forename: Chang-Yih
authors.initials: CY
authors.lastname: Duh
authors.forename: Chia-Hua
authors.initials: CH
authors.lastname: Li
authors.forename: Shang-Kwei
authors.initials: SK
authors.lastname: Wang
authors.forename: Chang-Feng
authors.initials: CF
authors.lastname: Dai
mesh_terms: D000818:Animals; D037421:Anthozoa / Q000737:chemistry*; D000970:Antineoplastic Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D003198:Computer Simulation; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D004354:Drug Screening Assays, Antitumor; D007941:Leukemia P388; D051379:Mice; D008968:Molecular Conformation; D015394:Molecular Structure; D012632:Secosteroids / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D013624:Taiwan; D014407:Tumor Cells, Cultured
chemical_list: D000970:Antineoplastic Agents; D004224:Diterpenes; D012632:Secosteroids