Cembrene A (1), two novel diterpenes 2 and 3 with the rare flexibilane skeleton, two new pimaranes 4 and 5, seven kauranes 6-12 (9 and 12 new), three known atisanes 13-15, a new trachylobane 16, and the new pentacyclic diterpene

The preparation of phenylsulfonate-tagged iodine(III) reagents as well as their use in a novel purification strategy for iodine(III)-promoted reactions is described. The concept is based on ion exchange and is initiated by an azide-promoted SN2-reaction at the alkyl sulfonate followed by trapping of the resulting aryl sulfonate anion with an ion-exchange resin. The concept is successfully proven for Ru-catalyzed oxidations of alcohols, the activation and glycosidation of thioglycosides, and the SuArez reaction of pyranoses.