Marine cyanobacteria have been shown to produce a variety of biologically active
and stucturally diverse secondary metabolites. These compounds are of interest to natural
products researchers mainly because of their potential application as biomedicinals,
biochemical probes, and agrichemicals.
The metabolic pathways utilized by the cyanobacterium Lyngbya majuscula to
Cyanobacteria are rich in biologically active secondary metabolites, many of
which have potential application as anticancer or antimicrobial drugs or as useful
probes in cell biology studies. A Jamaican isolate of the marine cyanobacterium,
Lyngbya majuscula was the source of a novel antifungal and cytotoxic secondary
metabolite, hectochlorin. The structure...
Marine algae have been recognized as a rich resource of new
and unusual organic molecules with diverse biological properties.
The current need to develop new antifungal, anticancer, antibiotic
and antiviral drugs has led to an intense research effort into the
discovery, isolation and structure determination of potential
medicinal agents from...
This thesis details my investigations of marine cyanobacterial natural
products that resulted in the discovery of eighteen new secondary metabolites.
Isolation and characterization of these unique molecules were carried out using
different chromatographic techniques and by careful analyses of 1D and 2D NMR
Preliminary bioassays of the crude...
Marine organisms produce a variety of secondary metabolites for defense, communication, and reproduction. While these uses are essential for the organisms' survival, marine natural products have demonstrated their value to human society as well. Asian countries used algae for centuries to treat or prevent illnesses as wide-ranging as cough, gout,...
This thesis describes the chemical investigation of marine cyanobacteria collected in Madagascar and Panama with an emphasis on the isolation and structure elucidation of medicinally relevant secondary metabolites.
A collection of the marine cyanobacterium Lyngbya majuscula from the Radames Islands, Madagascar yielded two new cyclic depsipeptides, radamamides A and B,...