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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 4539414 B1

PDFFull Text
Date of Patent:
Sep. 03, 1985

Filed:

Oct. 14, 1983

1h-cyclopenta[b]benzofuran derivative and its analog

Applicant:
Inventors:

Ming L King, Taipei, TW;

Chin-Chih Chiang, Taipei, TW;

Han-Chin Ling, Taipei, TW;

Masahito Ochiai, Kyoto, JP;

Eiichi Fujita, Kyoto, JP;

Andrew T McPhail, Durham, NC (US);

Assignee:

Other;

Attorney:

Pahl, Lorusso & Loud

Primary Examiner:

Henry R Jiles

Assistant Examiner:

Bernard I Dentz

Int. Cl.
CPC ...
C07D / ; C07C / ;
U.S. Cl.
CPC ...
549458 ; 564171 ;
Abstract

Substantially pure compounds having the general formula ##STR1## wherein (1) ##STR2## R.sup.2 is .beta.-hydroxy and R.sup.3 and R.sup.4 together form an oxygen bridge, or (2) ##STR3## R.sup.2 and R.sup.3 together form an additional carbon-carbon bond, and R.sup.4 is hydroxy, are disclosed. These compounds exhibit antileukemic activity against P388 lymphocytic leukemia in CDF.sub.1 mice and inhibitory activity in vitro against cells derived from human epidermoid carcinoma of the nasopharynx(KB) cells.

Find Patent Forward Citations

King, Ming. (1985). 1h-cyclopenta[b]benzofuran derivative and its analog (U.S. Patent No. 4539414). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4539414

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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