Arsenic compounds dimethylarsinoylribosides

A number of arsenic-containing ribosides, also referred to here simply as arsenosugars, occur in marine samples. Most of the arsenosugars are dimethylarsinoylribosides (Fig. 2, compounds 9 to 25). This group of compounds was unknown prior to 1981, when 9 and 12 were isolated from a brown alga (55). Structures for the two compounds were origi-... 

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