Studies concerning the antibiotic actinonin. Part III. Synthesis of structural analogues of actinonin by the anhydride–imide method
Abstract
A synthetic route, associated with a high degree of stereoselectivity, has been developed for the synthesis of structural analogues (XIII) of actinonin (I). The anhydride–imide method involves the sequence (IIIb)+(V)→[(VI)+(VII)]→(XI)→(XIII). (±)-Amino-amides (IIIb) yielded the (±)-hydroxamic acids with the relative configuration (XIII) and L-amino-amides (X) yielded single enantiomers with the absolute configuration (XIII).