Organic compounds -- part of the class 532-570 series – Organic compounds – Chalcogen bonded directly to ring carbon of the purine ring...
Reexamination Certificate
2005-07-19
2005-07-19
Berch, Mark L. (Department: 1624)
Organic compounds -- part of the class 532-570 series
Organic compounds
Chalcogen bonded directly to ring carbon of the purine ring...
C544S244000, C544S264000
Reexamination Certificate
active
06919455
ABSTRACT:
A compound represented by the following formula (I), or a salt thereof:where X is a halogen atom or a group represented by —S—(CH2)n—A, —SO—(CH2)m—B, —SO2—(CH2)m—B, —OSO2—(CH2)m—B, —OCO—(CH2)m—B or —OPO(OR)—(CH2)m—B, wherein n represents an integer of 0-4, A represents an optionally substituted aromatic hydrocarbon group or an optionally substituted heterocyclic residue having 1 to 4 hetero atoms selected from an oxygen atom, sulfur atom and nitrogen atom and having 5 to 10 ring-constituent atoms, m represents an integer of 0-4, B represents an optionally substituted alkyl group, an optionally substituted aromatic hydrocarbon group or an optionally substituted heterocyclic residue having 1 to 4 hetero atoms selected from an oxygen atom, sulfur atom and nitrogen atom and having 5 to 10 ring-constituent atoms, and R represents an optionally substituted alkyl group.
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Sekiya Kouichi
Takemiya Akihiro
Berch Mark L.
Greenblum & Bernstein P.L.C.
Mitsubishi Chemical Corporation
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