N-(3,5-Dimethyltricyclo[3.3.1.1.3,7]dec-1-yl)-4-O-beta-D-glucopyranosyl-D-glucopyranosylamine is an adduct of Memantine (M218000) which is an intermediate in the synthesis of reducing carbohydrate Adamantane amines for use in treating Gram positive or Gram negative bacteria infections.