(9bS) phosphoric acid 1,3-methanodibenzofuran-9-yloxy-diethyl ester 7-(1',1'-dimethylpentyl)-1,2,3,4,4a,9b-hexahydro-2,2-dimethyl-4-methylene 在
ruthenium trichloride 、
四丁基碘化铵 sodium periodate 作用下,
以
水 、
乙酸乙酯 为溶剂,
以37%的产率得到(9bS) phosphoric acid 1,3-methanodibenzofuran-4-one-9-yloxy-diethyl ester 7-(1',1'-dimethylpentyl)-1,2,3,4,4a,9b-hexahydro-2,2-dimethyl