Antiinflammatory 4-aroyl-1-indancarboxylic acids (I) were synthesized from the corresponding 4-aroyl-1-indanones (XI) by the one-carbon homologation reaction using p-toluenesulfonylmethylisocyanide (TosMIC, II) via 4-aroyl-1-indancarbonitriles (XIV). Among them, three compounds (Ia, b and c) were resolved into their enantiomers and it was found that the antiinflammatory activity virtually resides in the levo isomers, the absolute configurations of which were assigned the sinister series by the optical rotatory dispersion spectra.
通过对
联苯磺酰基甲基异
氰(TosMIC,II)的一碳均化反应,以4-芳酰基-
1-茚酮(XI)为原料,经4-芳酰基-1-
茚腈(XIV)合成了具有抗炎活性的4-芳酰基-1-
茚羧酸(I)。其中三个化合物(Ia、b和c)被拆分成对映异构体,发现抗炎活性主要存在于左旋异构体中,通过旋光色散光谱确定其绝对构型属于S系列。