93236-66-9Relevant academic research and scientific papers
The high molecular weight polyphloroglucinols of the marine brown alga Fucus vesiculosus L.: degradative analysis
Ragan, Mark A.
, p. 294 - 303 (2007/10/02)
The high-molecular-weight polyphloroglucinol tannin of Fucus vesiculosus has been isolated in pure form as judged by 1H and 13C nmr.Acetate and methyl derivatives were prepared and examined by uv and ir spectroscopy.Calcium-liquid ammonia degradation of the methyl ether derivative liberated numerous aryl compounds including fragments arising from ether-linked phloroglucinol end groups, internal ortho-, meta-, and para-oriented diethers vic- and (tentatively identified) sym-triethers, internal phloroglucinol-derived biphenyls (three isomers), probable terminal biphenyls, terphenyl(s), and from quaterphenyl(s).No evidence was found for vic-trihydroxylated end groups.In all, 63 fragments were identified by gc-ms, and abundances of the major fragments were estimated by quantitative gc.The data indicate that the F. vesiculosus tannins - or at least the portion represented by the fragments - are highly branched structures consisting entirely of phloroglucinol units.
