The title compound 7 has been synthesized in a racemic form, using Suzuki coupling (8 + 15 → 16) as the key step. Pure enantiomer (S)-(-)-7 has been obtained by carbonylation of the known bromide (S)-(+)-12 followed by reduction of the resulting methyl ester (S)-(+)-18 with LiAlH4.
标题化合物7已经以外消旋形式合成,使用Suzuki偶联(8 + 15 → 16)作为关键步骤。通过对已知溴化物(S)-(+)-12的羰基化,然后用LiAlH4还原所得的甲酸甲酯(S)-(+)-18,得到了纯对映体(S)-(-)-7。