
doi: 10.1038/200077b0
Bergmann and Feeney1 have isolated a new thymine pentoside from a sponge (Cryptotethia). Isolation and identification of the carbohydrate fragment of this nucleo-side have been unsuccessful; but the high dextrorotatory power of this nucleoside suggests that it is a xylofuranoside rather than the as yet unknown thymine nucleoside.
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