HCID 178446411, 화합물 → HCID 178435146, 화합물

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The intermediate (114 mg, 0.140 mmol) from Step 4(B) was dissolved in 45 mL of 1,2-dichloroethane, followed by the addition of Grubbs Catalyst 1st Generation (22 mg, 0.020 mmol) with 1 mL of 1,2-dichloroethane. The resulted reaction mixture was stirred at 70° C. for 6 hrs. (additional 14 mg of Grubbs Catalyst was added 2 hrs. after the initial addition) Solvent was evaporated in vacuo to give a crude product, which was purified by flash chromatography (10% EtOAc/DCM, Rf 0.19) to give 75 mg (68%, theoretical yield 110 mg) of the product, which is a mixture of cis and trans isomers. LCMS (method B) RT 3.78 min., MH+787.8.

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