US PATENT SUBCLASS 536 / 27.8
.~.~.~.~.~.~.~.~ Chalcogen bonded directly to the 6- or 2-position of a purine ring system (e.g., inosine, etc.)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
27.8.~.~.~.~.~.~.~.~ Chalcogen bonded directly to the 6- or 2-position of a purine ring system (e.g., inosine, etc.) {1}
27.81  DF  .~.~.~.~.~.~.~>.~.~ Nitrogen, other than nitro or nitroso, bonded directly to the 2-position of the purine ring system (e.g., guanosine, etc.)

DEFINITION

Classification: 536/27.8

Chalcogen bonded directly to the 6- or 2-position of a purine ring system (e.g., inosine, etc.):

(under subclass 27.21) Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to the 2-position or the 6-position of the purine ring system.

(1) Note. An example of a compound provided for herein is: [figure]