Five new labdane diterpenes from Amphiachyris amoena.
Five new labdane diterpenes, amoenolide A 19-aldehyde [2], and amoenolides B [3], C [4], D [5], and J [6] were isolated from the above-ground parts of Amphiachyris amoena, and their structures determined by spectral methods, in particular high-field nmr, and selective chemical studies. Amoenolide J [6] had its carbon skeleton established by the INADEQUATE 13C-13C connectivity nmr experiment.
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Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Ohio State University, Columbus 43210-1291.
Doskotch
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D015107:4-Butyrolactone / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D009284:Naphthols / Q000737:chemistry / Q000302:isolation & purification; D010944:Plants / Q000737:chemistry*
D004224:Diterpenes; D009284:Naphthols; C089561:amoenolide A; D015107:4-Butyrolactone