Pregnadiene
From Wikipedia, the free encyclopedia
A pregnadiene is a diene derivative of a pregnane.[1]
Dienes have two double bonds. The first is usually between carbon 4 and carbon 5 on ring A.
6-ene
The second can be between carbons 6 and 7 on ring B:
Dydrogesterone (progestin)
Medrogestone (progestin)
1-ene
The second can also be between carbons 1 and 2 on ring A:
