Lithocholic (1a), chenodeoxycholic (1b), deoxycholic (1c) and cholic acid (1d) were used for the synthesis of the title compouds. Reactions of O-acetyllithocholic acid chloride with piperidine, morpholine and 1-methylpiperazine gave the corresponding amides 2a-2c which were reduced with lithium aluminium hydride to 24-(piperidin-1-yl)-5β-cholan-3α-ol (3a) and analogues 3b and 3c. Heating of the acids 1a-1d with ethylenediamine monotosylate afforded 23-(4,5-dihydroimidazol-2-yl)-24-nor-5β-cholan-3α-ol (4a) and analogues 4b-4d. Compound 4a was similarly obtained from 3α-acetoxy-24-nor-5β-cholane-23-carbonitrile. Identity of the products was corroborated by spectral characterization. Some of the products (in the form of salts) were tested for cancerostatic and antimicrobial activities in vitro with partially promising results.
石胆酸(1a),陈胆酸(1b),去氧胆酸(1c)和胆酸(1d)被用于合成标题化合物。将O-乙酰石胆酸氯化物与哌啶,吗啉和1-甲基哌嗪反应,得到相应的酰胺2a-2c,然后用氢化铝锂还原为24-(哌啶-1-基)-5β-胆烷-3α-醇(3a)及类似物3b和3c。将酸1a-1d与乙二胺单对甲苯磺酸酯加热,得到23-(4,5-二氢咪唑-2-基)-24-去-5β-胆烷-3α-醇(4a)及类似物4b-4d。化合物4a也可以从3α-乙酰氧基-24-去-5β-胆烷-23-碳腈中类似地获得。通过光谱表征证实了产物的身份。其中一些产物(以盐的形式)经过体外测试,显示出部分有希望的抗癌和抗微生物活性。