5,6-dimethyl-3-(2-methylprop-1-en-1-yl)cyclohex-4-ene-1,2-dicarboxylic anhydride 在
lithium aluminium tetrahydride 、
乙醚 作用下,
生成
(+-)-4t,5-dimethyl-7t-(2-methyl-propenyl)-(3ar,7ac)-3a,4,7,7a-tetrahydro-3H-isobenzofuran-1-one 、 alkaline earth salt of/the/ methylsulfuric acid