F. Vermoortele, P. Valvekens, A. Vimont, V. Van Speybroeck 1116-INORISBN/ISSN: 0065-7727TalkConference / event / venue 245th National Spring Meeting of the American-Chemical-Society (ACS)New Orleans, USASunday, 7 April, 2013 to Thursday, 11 April, 2013