Author's Organization：Research Institute for Medical and Dental Engineering, Tokyo Medical and Dental University Research Institute for Medical and Dental Engineering, Tokyo Medical and Dental University Research Institute for Medical and Dental Engineering, Tokyo Medical and Dental University
Six biologically active minor bases (P-II-P-VII) related to paragracine (P-I) were isolated from Parazoanthus gracilis LWOWSKY and their structures were determined by spectral analyses as well as on the basis of chemical interconversions.
