US PATENT SUBCLASS 536 / 27.22
.~.~.~.~.~.~.~.~ Carbonyl, thiocarbonyl, or nitrogen, other than as nitro or nitroso, bonded directly to the sugar ring

Current as of: June, 1999
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536 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1.11  DF  .~ Carbohydrates or derivatives {15}
18.7  DF  .~.~ Nitrogen containing {13}
22.1  DF  .~.~.~ N-glycosides, polymers thereof, metal derivatives (e.g., nucleic acids, oligonucleotides, etc.) {12}
27.1  DF  .~.~.~.~ N-glycosides wherein the N is part of an N-hetero ring which hetero ring is part of a polycyclo ring system containing an N-hetero ring and an additional hetero ring (e.g., rebeccamycin, etc.) {3}
27.13  DF  .~.~.~.~.~ Bicyclic ring system consisting of the N-hetero ring fused to another hetero ring (e.g., 2-azaadenines, 6-azaadenines, etc.) {2}
27.2  DF  .~.~.~.~.~.~ The bicyclic ring system consists of a 1,3-diazine ring, which may be hydrogenated, fused to a five-membered N-hetero ring (e.g., purine isoesters like tubercidin, toyocamycin, sangivamycin, sparsomycin A, etc.) {1}
27.21  DF  .~.~.~.~.~.~.~ The five-membered N-hetero ring is 1,3-diazole, which may be hydrogenated (e.g., 6-chloropurine nucleoside, nebularin, etc.) {6}
27.22.~.~.~.~.~.~.~.~ Carbonyl, thiocarbonyl, or nitrogen, other than as nitro or nitroso, bonded directly to the sugar ring

DEFINITION

Classification: 536/27.22

Carbonyl, thiocarbonyl, or nitrogen, other than as nitro or nitroso, bonded directly to the sugar ring:

(under subclass 27.21) Compounds wherein the sugar ring of the nucleoside is bonded directly to carbonyl, thiocarbonyl, or nitrogen, other than as nitro or nitroso.

(1) Note. Examples of compounds provided for herein are: [figure]