when [ 14c ] -pregnenolone , progesterone or 17-hydroxyprogesterone was incubated with 800 g supernatant of fetal ovaries , progesterone , 17-hydroxypregnenolone and 5-pregnene-3 beta , 20 alpha-diol were formed from pregnenolone , 17-hydroxyprogesterone and 20 alpha-hydroxy-4-pregnen-3-one were formed from progesterone and 17 alpha , 20 alpha-dihydroxy-4-pregnen-3-one was formed from 17-hydroxyprogesterone .
C0376260
17-hydroxypregnenolone
C0373704
pregnenolone