Patent ID: 6949682

Claim:
Cinnamaldehyde derivatives represented by formula 1: wherein R 1 and R 1 ′ are the same, R 2 and R 2 ′ are the same, and R 3 and R 3 ′ are the same, R 1 , R 2 and R 3 are independently hydrogen, hydroxy, halogen, C 1 ˜C 4 alkyl, C 1 ˜C 4 alkoxy, OCOR 5 , or N-methylpiperazine, R 4 is hydrogen, nitro, or C 1 ˜C 4 alkoxy, and R 5 is C 1 ˜C 4 alkyl, phenyl, or phenyl substituted by halogen, with the proviso that R 3 is not hydrogen, methyl, methoxy or chloride when R 1 and R 2 are hydrogen.