SEARCH Articles Figures Tables 5 3-Cholesta-1,3-diene synthesis 5a-Cholesta-1,3-diene Cholesta-3,5-diene Cholesta-4,6-dien-3-one Cholesta-5,7-diene-3 3,25-diol Cholesta-l,4-dien-3-one Of cholesta-5,7-diene