minus side
 chain
ALL STEROIDOGENIC TISSUES
CHOLESTEROL (C27)
+ 3-keto
+ 11-OH
PROGESTERONE
+3-keto
+ 21-OH
+ 3-keto
+ 11-OH
+ 21-OH
+ 17-OH
CORTISOL (C21)
17-OH PREGNENOLONE
CORTICOSTERONE
ALDOSTERONE (C21)
+ 20-keto
+ 17-OH
PREGNENOLONE (C21)
ANDROSTENEDIONE (C19)
+ 18-ALDEHYDE
TESTOSTERONE
ESTRADIOL (C19)
GONADS
ADRENAL CORTEX
ESTRONE
STEROID SYNTHESIS
DEHYDROEPIANDROSTERONE��DHEA�
17-OH PROGESTERONE
DEHYDROEPIANDROSTERONE SULFATE   (C19 :�DHEA-S�)
+ 3-keto
aromatase
17-OH PREGNENOLONE
DIHYDROTESTOSTERONE (C19)
sulfotransferase
desmolase
desmolase
aromatase