Saisaha, Pattama; Pijper, Dirk; Van Summeren, Ruben P.; Hoen, Rob; Smit, Christian; De Boer, Johannes W.; Hage, Ronald; Alsters, Paul L.; Feringa, Ben L.; Browne, Wesley R. Organic and Biomolecular Chemistry, 2010 , vol. 8, # 19 p. 4444 - 4450