Abstract
Occurrence of carbamoyl- N-hydroxy derivatives of saxitoxin and neosaxitoxin in a xanthid crab Zosimus aeneus. Toxicon 32, 175–183, 1994.—Two novel paralytic toxins were isolated from toxic specimens of a xanthid crab Zosimus aeneus inhabiting Ishigaki Island, Okinawa. The structures of two of these were deduced to be carbamoyl- N-hydroxysaxitoxin and carbamoyl- N-hydroxyneosaxitoxin based on electrophoresis, high performance liquid chromatography, electrospray ionization mass spectrometry, 1H NMR, 13C NMR and conversion experiments. They showed specific toxicities of 1700 and 1400 mouse units per mg on i.p. injection into mice.
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