... R. A. Leonard JCSPerkin?, 1973,1836. ... View Article Online / Journal Homepage / Table of Contents for this issue ... 1 7,20P-Dihydroxy-5P-pregn- 6-en- 3-one .-The 3,3-ethylene- dioxy-5P-pregn-6- ene- 17,20P-diol (1 97 mg) in acetic acid (5 ml) and water (0.5 ml) was stored ...