Three novel and six known petuniasterones were isolated from the aerial par
ts of Petunia hybrida (Solanaceae). In addition, chromatography yielded fou
r groups of novel 2,3,4,6-tetra-O-acylated sucrose ester isomers. The sucro
se esters showed molluscicidal and bactericidal activities. Petuniasterones
had different molluscicidal activities, depending on the side-chains. (C)
1999 Society of Chemical Industry.