... The structures of these intermediate (5) A. Maggiolo, Organic Ozone Reactions and Techniques, The Welsbach Corporation, Ozone Process Division, Philadelphia, Pa., 1957. ... Chem. SOC., 76, 5014 (1954). ... IV I11 CHO j.3 uo: 2::: VI1 ';M VI11 V VI a, tricyclic b, tetracyclic 0 P IX ...