6-Chloro-5-cyclohexylindan-1-carboxylic acid (TAI-284) and related 5-substituted indan-1-carboxylic acids were prepared for the evaluation of antiinflammatory action. Among them, TAI-284 showed the most potent activity, comparable to that of indomethacin. The replacement of the cyclohexyl moiety at C-5 by other alkyl groups such as isobutyl or isopropyl, or the removal of the chlorine atom at C-6 resulted in a considerable reduction of the activities. The resolution of TAI-284 was effected with quinine, and it was found that the antiinflammatory activity virtually resided in the dextro isomer, the absolute configuration of which was assigned the sinister series by the optical rotatory dispersion spectrum and X-ray crystarography.
为评估抗炎作用,制备了 6-
氯-5-环己基
茚满-1-
羧酸(TAI-284)和相关的 5-取代
茚满-1-
羧酸。其中,TAI-284 的活性最强,与
吲哚美辛相当。用异丁基或异丙基等其他烷基取代 C-5 位的环己基,或去除 C-6 位的
氯原子,都会大大降低其活性。用
奎宁对 TAI-284 进行了解析,发现其抗炎活性实际上存在于右旋异构体中。