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New Polybrominated Metabolites from the Red Alga by R. Kazlauskas; R.O. Lidgard; R.J. Wells is a Chemistry article available to read on EtoBox.
What is New Polybrominated Metabolites from the Red Alga about?
Red algae of the family Bonnemaisoniaceae have yielded many acetate derived halogenated secondary metabolites. Haloforms, haloacetones, halopropenes and halobutenones are amongst the vast array of compounds detected in Asparagopsis taxiformis I,2 and A. armata3 and haloheptan-2--ones were isolated from Bonnemaisonia hamifera4. Two species of Delisea have been found to contain halogenated lactones of the general structure (1)5s6, whilst halogenated act-l-en-3-ones have been recently reported from Ptilonia australasica7 , 0, fimbriata' and B asparagoides' -1. respectively. We now report the isolation of a series of polybrominated metabolites from the dichloromethane soluble material of Ptilonia australasica collected in Tasmania. Chromatography of this extract (3% based on dry weight) on silica gel yielded two novel crystalline metabolites (2) and (31, together with a complex mixture of lower polarity which consisted of 1,1,2-tribromoalk-l-en-3-ones of general structure (41 which have been previously reported5y7. We now present evidence to support the structures of (21 and (31 and also spectral data to establish the identity of the individual components comprising the mixture of gene
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- Author
- R. Kazlauskas; R.O. Lidgard; R.J. Wells
- Publisher
- Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0040-4039)
- Published
- 1978
- Language
- EN
- Field
- Chemistry (Physical Sciences)