1-(3,4-dimethoxy-phenyl)-6,7-dimethoxy-3-methylen-4-oxo-1,2,3,4-tetrahydro-[2]naphthoic acid 在
盐酸 、 amalgamated zinc 作用下,
生成 1-(3,4-dimethoxy-phenyl)-6,7-dimethoxy-3-methyl-1,2,3,4-tetrahydro-[2]naphthoic acid 、 alkaline earth salt of/the/ methylsulfuric acid