Abstract

Chemical investigation of cyanobacterial strain HT-58-2, which most closely aligns with the genus Brasilomena, has led to the isolation of two compounds related to tolypodiol. The structures and absolute configuration of 6-deoxytolypodiol (1) and 11-hydroxytolypodiol (2) were elucidated by spectroscopic and spectrometric analysis. While tolypodiol previously showed anti-inflammatory activity in a mouse ear edema assay, only 2 reduced in vitro thromboxane B2 and superoxide anion (O2-) generation from Escherichia coli lipopolysaccharide-activated rat neonatal microglia to any appreciable degree.

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