Patent number: 7235688
Abstract: A process for preparing unsaturated esters useful as intermediates for HDAC inhibitors, by reacting an aldehyde or ketone having the following formula I: wherein R1 is an aromatic group or a combined aliphatic and aromatic group; X is —O—, —S—, —COO—, —OOC—, —CONR7—, or —R7NCO—; L1 an aliphatic linking group, an aromatic linking group, or a combined aliphatic and aromatic linking group; R2 and R3 are each independently hydrogen, a hydroxy group, an alkoxy group, an amino group, a carboxyl group, an amide group, an ester group, a carbamate group, an aliphatic group, an aromatic group, a combined aliphatic and aromatic group, R2 and R3 together are ?O, or one of R2 and R3 form a double bond with one of R4 and R5; R4 and R5 are each independently hydrogen, a hydroxy group, an alkoxy group, an amino group, a carboxy group, an amide group, an ester group, a carbamate group, an aliphatic group, an aromatic group, a combined aliphatic and aromatic group, or one of R4 and R5 form a double bond with one of R2 and
Type:
Grant
Filed:
April 19, 2005
Date of Patent:
June 26, 2007
Assignee:
University of Notre Dame Du Lac
Inventors:
Paul Helquist, Joakim Löfstedt