Department of Materials Science and Engineering, Faculty of Engineering, Yamagata University, Yonezawa 992, Japan ... Key Word Index--Antifungal activity; antifeedant activity: bactericidal activity; 2,4,6-trihydroxy- and 2,4,6-trihydroxy-5-methyl-substituted 3-(3-phenylpropionyl) benzaldehydes. ... Abstract--2,4,6-Trihydroxy-, 2,4,6-trihydroxy-5-methyl -, and 2,4,5,6-tetrahydroxy-substituted 3-(3-phenylpropio- nyl) benzaidehydes were ...