CC(C[AlH]CC(C)C)C.[N:10]1[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=1/[CH:16]=[CH:17]/[C:18](OCC)=[O:19]>C1(C)C=CC=CC=1>[N:10]1[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=1/[CH:16]=[CH:17]/[CH2:18][OH:19]As in Example 3, Step 2, but using a 1.5M solution of DIBAL in toluene, the ester from Step 1 of the present example was converted to the title compound. The alcohol was chromatographed on silica using EtOAc/toluene (9:1) as eluent.
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