1965 年 29 巻 9 号 p. 832-835
From a red alga, Gymnogongrus flabelliformis, a new guanidino compound of an empirical formula, C6H12O3N4, was isolated. The decomposition products identified were carbon dioxide, guanidine and γ-aminobutyric acid on hydrolysis at 120°C, succinic acid and guanylurea on oxidation with potassium permanganate, and γ-aminobutyric and γ-ureidobutyric acids on hydrolysis with barium hydroxide, respectively. These results led the authors to postulate that the substance is l-amidino-3-(3-carboxypropyl)urea or γ-(guanylureido)butyric acid.
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