Inclusion compounds of lankacidin-group antibiotics with cyclodextrins

Lankacidin-group antibiotics formed inclusion compounds with beta-cyclodextrin in molar ratios of about 1:1. These compounds showed remarkably improved water-solubility and stability in aqueous solutions. The structure of the inclusion compounds of lankacidin A is proposed based on the facility of their inclusion with beta-cyclodextrin and the results of 1H NMR spectral studies.