title: Decandrinin, an unprecedented C9-spiro-fused 7,8-seco-ent-abietane from the Godavari mangrove Ceriops decandra.
abstract: Decandrinin (1), an unprecedented C9-spiro-fused 7,8-seco-ent-abietane, was obtained from the bark of an Indian mangrove, Ceriops decandra, collected in the estuary of Godavari, Andhra Pradesh. The constitution and the relative configuration of 1 were determined by HRMS (ESI) and extensive NMR investigations, and the absolute configuration by circular dichroism (CD) and optical-rotatory dispersion (ORD) spectroscopy in combination with quantum-chemical calculations. Decandrinin is the first 7,8-seco-ent-abietane.
authors.affiliation: Key Laboratory of Marine Bio-resources Sustainable Utilization, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, P. R. China ; Hubei Key Laboratory of Natural Products Research and Development, College of Chemistry and Life Science, China Three Gorges University, Yichang 443002, P. R. China.
authors.forename: Hui
authors.initials: H
authors.lastname: Wang
authors.affiliation: Marine Drugs Research Center, College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, P. R. China.
authors.forename: Min-Yi
authors.initials: MY
authors.lastname: Li
authors.affiliation: Institute of Organic Chemistry, University of Würzburg, Am Hubland, Würzburg 97074, Germany.
authors.forename: Félix Zongwe
authors.initials: FZ
authors.lastname: Katele
authors.affiliation: Government Degree College at Amadala valasa, Srikakulam District, Andhra Pradesh 532185, India.
authors.forename: Tirumani
authors.initials: T
authors.lastname: Satyanandamurty
authors.affiliation: Marine Drugs Research Center, College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, P. R. China.
authors.forename: Jun
authors.initials: J
authors.lastname: Wu
authors.affiliation: Institute of Organic Chemistry, University of Würzburg, Am Hubland, Würzburg 97074, Germany.
authors.forename: Gerhard
authors.initials: G
authors.lastname: Bringmann
keywords: Ceriops decandra; Rhizophoraceae; abietane; absolute configuration; circular dichroism; decandrinin