US PATENT SUBCLASS 536 / 22.1
.~.~.~ N-glycosides, polymers thereof, metal derivatives (e.g., nucleic acids, oligonucleotides, 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.~.~.~ N-glycosides, polymers thereof, metal derivatives (e.g., nucleic acids, oligonucleotides, etc.) {12}
23.1  DF  .~.~.~.~> DNA or RNA fragments or modified forms thereof (e.g., genes, etc.) {9}
25.1  DF  .~.~.~.~> 3'-5' linked RNA
25.2  DF  .~.~.~.~> 2'-5' linked RNA
25.3  DF  .~.~.~.~> Synthesis of polynucleotides or oligonucleotides {4}
25.4  DF  .~.~.~.~> Separation or purification of polynucleotides or oligonucleotides {1}
25.5  DF  .~.~.~.~> Homopolymers having repeating sequences of four or more identical nucleotide units
25.6  DF  .~.~.~.~> Nucleic acids which include two or three nucleotide units
26.1  DF  .~.~.~.~> Phosphorus containing N-glycoside wherein the N is part of an N-hetero ring {9}
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}
28.1  DF  .~.~.~.~> N-glycosides wherein the N is part of a six-membered hetero ring (e.g., diazines, etc.) {3}
28.6  DF  .~.~.~.~> N-glycosides wherein the N is part of a five-membered hetero ring (e.g., selenazole nucleosides, pyrrole nucleosides, etc.) {1}
29.1  DF  .~.~.~.~> Nitrogen of N-glycoside is acyclic nitrogen {3}

DEFINITION

Classification: 536/22.1

N-glycosides, polymers thereof, metal derivatives (e.g., nucleic acids, oligonucleotides, etc.):

(under subclass 18.7) Compounds which are glycosidic derivatives of the cyclic forms of sugars in which the aglycone portion is attached thru nitrogen to the sugar moiety by substituting it for the hemiacetal hydroxyl of the sugar.

(1) Note. The compounds included herein are N-glycosides, nucleic acids, oligonucleotides, metal derivatives of nucleic acids, etc.

(2) Note. A nucleoside is an N-glycoside wherein the aglycone portion is a pyrimidine ring or a purine ring system attached thru ring nitrogen to a pentose sugar (either a ribose or a deoxyribose).

(3) Note. A nucleotide is a phosphorylated nucleoside.

(4) Note. Polynucleotides, also called nucleic acids, are covalently linked series of nucleotides in which the 3i position of the pentose of one nucleotide is joined by a phosphodiester group to the 5i position of the next.

(5) Note. DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) are biologically occurring polynucleotides in which the nucleotide residues are linked in a specific sequence by phosphodiester linkages.

(6) Note. The numbering of the members of the purine ring system in these subclasses does not follow the Ring Index numbering system. The numbering system followed is: [figure] SEE OR SEARCH THIS CLASS, SUBCLASS:

4+, for glycosides wherein the aglycone moiety is attached to the sugar portion through an oxygen or sulfur atom.

25.5, for homopolymers wherein the monomeric unit is a nucleotide or a nucleoside.

SEE OR SEARCH CLASS

544, Organic Compounds,

243, for nucleotide analogs which are not glycosides.