The present invention provides a therapeutic agent for a wound comprising a compound represented by the formula (I) wherein R1 represents a hydroxy C1-C6 alkyl group, a C2-C7 alkanoyl group, a C2-C7 alkanoyl C1-C6 alkyl group, a (C1-C6 alkoxy)carbonyl group, a (C1-C6 alkoxy)carbonyl C1-C6 alkyl group, a carboxy group, or a carboxy C1-C6 alkyl group, or a pharmacologically acceptable salt thereof as an active ingredient.