Klopfleisch, Maurice; Seidel, Raphael A.; Goerls, Helmar; Richter, Hannes; Beckert, Rainer; Imhof, Wolfgang; Reiher, Markus; Pohnert, Georg; Westerhausen, Matthias Organic Letters, 2013, vol. 15, # 17 p. 4608 - 4611 doi: 10.1021/ol402221b