1-(2-chloro-6-methylphenyl)-(1,2-dideoxy-α-D-glucofurano)[2,1-d]imidazolidine-2-thione 、 alkaline earth salt of/the/ methylsulfuric acid 以85%的产率得到[(2R)-2-[(3aS,5S,6R,6aR)-6-acetyloxy-3-(2-chloro-6-methylphenyl)-2-sulfanylidene-3a,5,6,6a-tetrahydro-1H-furo[2,3-d]imidazol-5-yl]-2-acetyloxyethyl] acetate