US PATENT SUBCLASS 435 / 87-- .~.~.~.~ Nucleoside

US PATENT SUBCLASS 435 / 87
.~.~.~.~ Nucleoside

Current as of: June, 1999
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435 /	HD	CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY

41	DF	MICRO-ORGANISM, TISSUE CELL CULTURE OR ENZYME USING PROCESS TO SYNTHESIZE A DESIRED CHEMICAL COMPOUND OR COMPOSITION {26}
72	DF	.~ Preparing compound containing saccharide radical {13}
84	DF	.~.~ Preparing nitrogen-containing saccharide {1}
85	DF	.~.~.~ N-glycoside {3}
87		.~.~.~.~ Nucleoside {1}
88	DF	.~.~.~.~.~> Having a fused ring containing a six-membered ring having two N-atoms in the same ring (e.g., purine nucleosides, etc.)

DEFINITION

Classification: 435/87

Nucleoside:

(under subclass 85) Processes wherein the nitrogen is part of a purine or pyrimidine or a substituted purine or pyrimidine ring and the product synthesized does not contain phosphorus.

(1) Note. Substituted purine or pyrimidine includes only

those derivatives which are substituted on rather than in the respective ring positions, (i.e., the structures below) is present in the structure. The internal ring bonding may be altered by tautomerism or by the addition of substituents without excluding a compound from this subclass. [figure]