ORGANIC PHOTOCHEMISTRY- PART II, PHOTOCHEMICAL SYNTHESIS OF THE NATURALLY OCCURING TRITERPENE LACTONE, 3β-HYDROXY LUPAN-28,13β-OLIDE

Article abstract of DOI:10.1016/S0040-4039(00)99143-3

The photochemical synthesis of the title lactone was achieved by irradiation in the presence of Pb(IV) acetate alone or Pb(IV) acetate + calcium carbonate + iodine or mercuric oxide + iodine.Chiroptical measurements (CD) of this and other related lactones provided convincing evidence in support of the lactone ring structure.