The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 6919455 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 19, 2005

Filed:

Aug. 01, 2003
Applicants:

Kouichi Sekiya, Kisarazu, JP;

Akihiro Takemiya, Yokohama, JP;

Inventors:

Kouichi Sekiya, Kisarazu, JP;

Akihiro Takemiya, Yokohama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D473/40 ; C07D473/36 ; C07D473/28 ; C07F009/6561 ;
U.S. Cl.
CPC ...
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—(CH)—A, —SO—(CH)—B, —SO—(CH)—B, —OSO—(CH)—B, —OCO—(CH)—B or —OPO(OR)—(CH)—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. (2005). Purine derivative dihydrate, drugs containing the same as the active ingredient and intermediate in the production thereof (U.S. Patent No. 6919455). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6919455

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