Anti-inflammatory Diterpenoids from the Formosan Soft Coral Lobophytum varium

WT Teng; CY Huang; JH Sheu

doi:10.1055/s-0037-1608086

Planta Medica International Open, Inhaltsverzeichnis

Planta Medica International Open 2017; 4(S 01): S1-S202
DOI: 10.1055/s-0037-1608086

Poster Session

Georg Thieme Verlag KG Stuttgart · New York

Anti-inflammatory Diterpenoids from the Formosan Soft Coral Lobophytum varium

WT Teng

¹Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan

,

CY Huang

¹Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan

,

JH Sheu

¹Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan

²Frontier Center for Ocean Science and Technology, National Sun Yat-sen University, Kaohsiung, Taiwan

› Institutsangaben

Abstract

Volltext

In order to discover bioactive secondary metabolites, we have investigated the chemical constituents from the organic extracts of the soft coral Lobophytum varium, which was collected from Jihui Fish Port, Taitung, Taiwan. This study led to the isolation of twelve natural compounds, including five new lobane diterpenes [1], lobovarols A-E (1-4), and an eudesmane derivative [2] lobovarol E (5), along with seven known compounds 6-12. The structures and relative configurations of all metabolites had been established by detailed spectroscopic analyses including 1D and 2D NMR (COSY, HSQC, HMBC and NOESY) data in association with MS experiments. The anti-inflammatory activities of compounds 1-12 on neutrophil pro-inflammatory responses were evaluated by measuring their ability in suppressing fMLP/CB-induced superoxide anion (O₂ ^{- ·}) generation and elastase release in human neutrophils. From the results, 17,18-epoxyloba-8,10,13(15)-trien-16-ol (11) [3] showed significant inhibition (45.3 ± 4.1%) toward elastase release generation at 10µM.

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