US PATENT SUBCLASS 435 / 76
.~.~.~.~ The hetero ring has eight or more ring members and only oxygen as ring hetero atoms (e.g., erythromycin, spiramycin, nystatin, etc.)

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}
74  DF  .~.~ Preparing O-glycoside (e.g., glucosides, etc.) {4}
75  DF  .~.~.~ Oxygen of the saccharide radical is directly bonded to a nonsaccharide heterocyclic ring or a fused- or bridged-ring system which contains a nonsaccharide heterocyclic ring (e.g., coumermycin, novobiocin, etc.) {1}
76.~.~.~.~ The hetero ring has eight or more ring members and only oxygen as ring hetero atoms (e.g., erythromycin, spiramycin, nystatin, etc.)

DEFINITION

Classification: 435/76

The hetero ring has eight or more ring members and only oxygen as ring hetero atoms (e.g., erythromycin, spiramycin, nystatin, etc.):

(under subclass 75) Processes wherein the nonsaccharide heterocyclic ring has eight or more ring members and only oxygen as the ring heteroatom, e.g., [figure]