The chemical reactions and pathways resulting in the formation of dermatan sulfate, any glycosaminoglycan with repeats consisting of beta-(1,4)-linked L-iduronyl-beta-(1,3)-N-acetyl-D-galactosamine 4-sulfate units.
Synonyms:
exact_synonym:
chondroitin sulfate B biosynthesis; chondroitin sulfate B biosynthetic process; dermatan sulfate anabolism; dermatan sulfate biosynthesis; dermatan sulfate formation; dermatan sulfate synthesis; dermatan sulphate biosynthesis; dermatan sulphate biosynthetic process