1. Istituto di Chimica del Riconoscimento MolecolareConsiglio Nazionale delle Ricerche Via Mario Bianco 9 I 20131 Milano Italy
2. Dipartimento di Scienze FarmaceuticheUniversità degli Studi di Milano Via Mangiagalli 25 I 20131 Milano Italy
3. Institute of Microbiology of the Czech Academy of Sciences Vídeňská 1083 CZ 14220 Prague 4 Czech Republic
4. Institute of BiotechnologySlovak University of Technology Radlinského 9 SK 81237 Bratislava Slovakia
5. Institute of Organic Chemistry and Biochemistry of theCzech Academy of Sciences Flemingovo nám. 2 CZ 16610 Prague 6 Czech Republic
6. Asymmetric Catalysis Laboratory (LCAE)Badji Mokhtar Annaba-University B.P. 12 23000 Annaba Algeria