Toxicants from mangrove plants, V. Isolation of the piscicide, 2-hydroxy-5-methoxy-3-undecyl-1,4 benzoquinone (5-O-methylembelin) from Aegiceras corniculatum.
Extracts of the twigs and stems of the mangrove plant Aegiceras corniculatum demonstrated toxicity to fish (Tilapia nilotica). 5-O-Methylembelin was isolated and was shown to be toxic to fish at a concentration of 1 ppm within a period of 75 min. The structure of 5-O-methylembelin was determined by a study of spectroscopic properties and comparison with an authentic synthetic sample.
Marine Science Center, University of the Philippines, Quezon City.
E
E
Gomez
O
O
de la Cruz-Giron
A A
AA
de la Cruz
B S
BS
Joshi
V
V
Chittawong
D H
DH
Miles
D000818:Animals; D000935:Antifungal Agents / Q000302:isolation & purification; D016227:Benzoquinones; D005399:Fishes; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010944:Plants / Q000032:analysis*; D011775:Pythium / Q000187:drug effects; D011809:Quinones / Q000302:isolation & purification / Q000494:pharmacology*; D014118:Toxins, Biological / Q000302:isolation & purification*
D000935:Antifungal Agents; D016227:Benzoquinones; D011809:Quinones; D014118:Toxins, Biological; C061025:5-O-methylembelin