The chemical reactions and pathways resulting in the formation of gangliosides that begins with the formation of lactosylceramides, Gal-beta-(1->4)-Glc-beta-(1->1') ceramides, any compound formed by the replacement of the glycosidic C1 hydroxyl group of lactose by a ceramide group.
Synonyms:
exact_synonym:
ganglioside biosynthesis via lactosylceramide biosynthesis
related_synonym:
biosynthesis of lactosylceramide precursor to ganglioside; lactosylceramide biosynthesis leading to ganglioside; lactosylceramide biosynthetic process leading to ganglioside