Patent number: 7232837
Abstract: The present invention provides stereoscopically-pure diastereomers of Formula I: In a preferred embodiment, the stereoisomers of the present invention are of Formula II, depicted below: R2, R3 and R4 are independently H, OH, OCH3, CH2OH, NHCONH2, NH2, halogen or CF3, and R1 is pyridine, or an amine which may be substituted with hydrogen, lower alkyl, lower alkylenearyl, lower alkylenephenyl, lower alkylenehydroxyphenyl, lower alkyleneamine, lower alkyleneaminoaryl, lower alkylaminohydroxyphenyl, or a similar functional group. R5 is hydrogen, hydroxyl or methyl; R6 is hydrogen, lower alkyl, lower alkylenaryl, lower alkylenephenyl, lower alkylenehydroxyphenyl, lower alkyleneamine, lower alkyleneaminoaryl, lower alkylaminohydroxyphenyl, and the like. For both Formula I and Formual II, the first carbon on the side chain progressing from the ring is preferably in the R-configuration. The second carbon atom on the side chain of Formula II, which is attached to R5, may or may not be a chiral center.
Type:
Grant
Filed:
October 9, 2003
Date of Patent:
June 19, 2007
Assignee:
McNeil-PPC, Inc.
Inventors:
Anthony Booth, James L. Caffrey