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2776319 
Journal Article 
Two chromenes and a prenylated benzoic acid derivative from Piper aduncum 
Orjala, J; Erdelmeier C, AJ; Wright, AD; Rali, T; Sticher, O 
1993 
1 
Phytochemistry
ISSN: 0031-9422
EISSN: 1873-3700 
BIOSIS/94/00440 
OXFORD 
OXFORD 
813-818 
English 
BIOSIS COPYRIGHT: BIOL ABS. In addition to stigmasterol, piperiton, methyl 2,2-dimethyl-2H-chromene-6-carboxylate, methyl 3-(2-hydroxy-3-methyl-3-butenyl)-4-hydroxy-benzoate and methyl (6S)-2-trans-6-hydroxy-2,6-dimethyl-2,7-octadienoate, three new natural products were isolated from Piper aduncum and characterized as methyl 8-hydroxy-2,2-dimethyl-2H-chromene-6-carboxylate, 2,2-dimethyl-8-(3-methyl-2-butenyl)-2H-chromene-6-carboxylic acid and methyl 3-(6-hydroxy-3,7-dimethyl-2,7-octadienyl)-4-methoxy-benzoate. The structures of all isolates were elucidated by spectroscopic methods, mainly 1D and 2D NMR spectroscopy. The antibacterial, antifungal and molluscicidal activities of the isolates were also investigated.