Phenalenone derivatives and the unusual tricyclic sesterterpene acid from the marine fungus Lophiostoma bipolare BCC25910

Autor: Pranee Rachtawee, Palangpon Kongsaeree, Samran Prabpai, Chakapong Intaraudom, Tanapong Boonruangprapa, Pattama Pittayakhajonwut, Sutichai Nitthithanasilp
Rok vydání: 2014
Předmět:
Zdroj: Phytochemistry. 120
ISSN: 1873-3700
Popis: Ten compounds including nine phenalenone derivatives (five bipolarides and four bipolarols) and a sesterterpene acid (bipolarenic acid), were isolated from a marine isolated of the fungus Lophiostoma bipolare (BCC25910), along with the known compounds, (-)-scleroderolide, (-)-sclerodin, and oxasetin. Chemical structures were elucidated based on NMR spectroscopic data and HRESIMS analysis. In addition, the absolute configurations of the phenalenones were resolved using specific rotations and chemical means, while the relative configuration of bipolarenic acid was confirmed by X-ray crystallographic analysis. The compounds were evaluated for biological activity against the Plasmodium falciparum K-1 strain, Candida albicans, and Bacillus cereus, and for cytotoxicity against both cancerous and non-cancerous cells.
Databáze: OpenAIRE