Patents by Inventor Omar Abu-Nasrieh

Omar Abu-Nasrieh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the preparation of cephalosporanic compounds
    Patent number: 5574154
    Abstract: The invention relates to a process for the preparation of a compound of the formula I or salts thereof ##STR1## wherein R.sub.1 is hydrogen or trityl,R.sub.2 is hydrogen, trityl, .dbd.NOCH.sub.3, .dbd.NOCH.sub.2 COOH, or .dbd.NOCCOOH(CH.sub.3).sub.2R.sub.3 is hydrogen, --CH.dbd.CH.sub.2, --CH.sub.2 COCH.sub.3, ##STR2## comprising (a) reacting a compound of the formula II ##STR3## wherein R.sub.1 and R.sub.2 are as defined above with a compound of the formula III ##STR4## wherein R.sub.3 is as defined above in the presence of a solvent; (b) refluxing the mixture in the presence of a base; and, (c) if required the compounds of the formula I so obtained are converted into salts thereof. The compounds of the formula I have antibacterial activity.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: November 12, 1996
    Assignee: Alnejma Bulk Pharmaceutical Co. A.B.P.C.
    Inventor: Omar Abu-Nasrieh