1. Laboratory of Chemistry, Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Vídeňská 1083, CZ-14220 Prague 4, Czech Republic, Institute of Chemical Technology, Technická 5, CZ-16628 Prague 6, Czech Republic, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, CZ-16610 Prague 6, Czech Republic. and Biological Center, Institute of Entomology, Academy of Sciences of the Czech Republic, Branišovská 31, CZ-37005 České...