2 02 m 2h 3 75 d j 9 6 hz 2h 5 68 d j 1 0 hz 1h 5 85 d j 1 0 hz 1h 6 88 d j 8 6 hz 2h 7 37 d j 8 6 hz 2h the bromide intermediate was formed by different starting material accompanying a similar reaction as described in example 4 the bromide intermediate and a great amount of triphenylphosphine pph 3 were charged in a reaction bottle heated to 80 u00b0 c and reacted for 10 hour to obtain a white solid the white solid was washed by hexane to remove un reacted pph 3 and reacted with bromobenzaldehyde to process a wittig reaction to form an intermediate with an alkylene bridge the intermediate with an alkylene bridge was purified by chromatography with hexane as eluent and then processed a hydrogenation for transferring alkylene bridge to alky bridge the hydrogenated intermediate was processed as the reaction described in example 1 to form compound 8 and 9 the described reaction is shown in formula 17 compound 8 had a melting point of 134 2 u00b0 c and compound 9 had a melting point of 91 7 u00b0 c the 1 h nmr spectrum 400 mhz cdcl 3 of compound 8 u03b4 0 86 1 31 m 17h 1 51 1 53 m 2h 1 72 1 85 m 8h 2 6 2 67 m 2h 3 16 m 2h 5 77 d j 1 2 hz 1h 5 93 d j 1 2 hz 1h 7 19.