Patent classifications
A
HUMAN NECESSITIES
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A61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
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A61K
PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
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31/00
Medicinal preparations containing organic active ingredients
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A61K31/70
Carbohydrates; Sugars; Derivatives thereof
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A61K31/7042
Compounds having saccharide radicals and heterocyclic rings
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A61K31/7052
having nitrogen as a ring hetero atom, e.g. nucleosides, nucleotides
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A61K31/706
containing six-membered rings with nitrogen as a ring hetero atom
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A61K31/7064
containing condensed or non-condensed pyrimidines
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A61K31/7076
containing purines, e.g. adenosine, adenylic acid
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A61K31/708
having oxo groups directly attached to the purine ring system, e.g. guanosine, guanylic acid
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