Tithoniamarin and tithoniamide: a structurally unique isocoumarin dimer and a new ceramide from Tithonia diversifolia.
Tithoniamarin (1), a new isocoumarin dimer and a new ceramide, named tithoniamide (2a), have been isolated from Tithonia diversifolia, in addition to the known beta-sitosterol and beta-sitosterol glucopyranoside. The structures were elucidated on the basis of spectroscopic and chemical evidence. Preliminary studies showed that 1 has antifungal and herbicidal activities against Microbotryum violaceum and Chlorella fusca.
Yemele Bouberte
Meffo
M
Department of Organic Chemistry, Faculty of Science, Yaounde University I, PO Box 812, Yaounde, Cameroon.
Krohn
Karsten
K
Hussain
Hidayat
H
Dongo
Etienne
E
Schulz
Barbara
B
Hu
Qunxiu
Q
D019659:Asteraceae / Q000737:chemistry*; D002518:Ceramides / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D035264:Flowers / Q000737:chemistry; D049934:Isocoumarins / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D008826:Microbial Sensitivity Tests; D019906:Nuclear Magnetic Resonance, Biomolecular; D009904:Optical Rotation; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
D002518:Ceramides; D049934:Isocoumarins