(17Z)-protosta-17(20),24-dien-3beta-ol biosynthetic process
andrastin A biosynthetic process
androst-4-ene-3,17-dione biosynthetic process +
brexanolone biosynthetic process
ecdysteroid biosynthetic process +
ergosteryl 3-beta-D-glucoside biosynthetic process
helvolic acid biosynthetic process +
negative regulation of steroid biosynthetic process +
phytosteroid biosynthetic process +
positive regulation of steroid biosynthetic process +
regulation of steroid biosynthetic process +
steroid hormone biosynthetic process +
sterol biosynthetic process +
testosterone biosynthetic process +
vitamin A biosynthetic process
vitamin D biosynthetic process +
The chemical reactions and pathways resulting in the formation of vitamin D, any of a group of related, fat-soluble compounds that are derived from delta-5,7 steroids and play a central role in calcium metabolism. Specific forms of vitamin D include calciferol (ergocalciferol; vitamin D2) and cholecalciferol (calciol; vitamin D3).