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.:
Date of Patent:
Jun. 28, 1983
Filed:
Feb. 02, 1982
Applicant:
Inventor:
Steven L Peake, New Canaan, CT (US);
Assignee:
American Cyanamid Company, Stamford, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
549214 ; 549502 ; 549483 ; 549453 ; 549449 ; 549414 ; 549 21 ; 568361 ; 568379 ;
Abstract
A method for the preparation of cyclopentenones of the general formula (VIII): ##STR1## wherein n is 5-7, has been developed which proceeds via the acid catalyzed deprotection and rearrangement of novel substituted-.alpha.-hydroxymethylfurans of general formula (VII): ##STR2## wherein R is a hydroxyl protecting group, R.sub.1 and R.sub.2 are methyl or ethyl or together form --(CH.sub.2).sub.3 -- and n is as above described. Cyclopentenones of formula VIII are useful intermediates in prostaglandin analog synthesis.