A series of alpha-terthiophene derivatives were prepared and their pro
tein kinase C inhibitory activity were evaluated. The aldehyde derivat
ives were most potent inhibitors (IC50 < 1 mu M). alpha-Terthiophene m
onoaldehyde was inactive in the inhibitions of protein kinase A, mitog
en activated protein kinase and protein tyrosine kinase. (C) 1998 Else
vier Science Ltd. All rights reserved.