以苯甲醚为起始原料,经Friedel-Crafts反应、溴化和亲核取代转化为硼酸中间体2.以羟基丙酮12为起始原料,经过Wittig反应、溴化、Arbuzov反应、Horner-Wadsworth-Emmons(HWE)反应后得到共轭烯烃溴代物3;化合物2分别与化合物3、4-溴-2-氟苯甲酸甲酯(4)和6-溴烟酸甲酯(5)经Suzuki偶联反应和水解反应,得到三个未见报道的维甲酸类似物1a~1c.同时,以溴苯为起始原料经Friedel-Crafts反应、硝化反应、三氟甲基化反应、硝基还原和亲核取代合成了含有三氟甲基的维甲酸类似物1d.化合物1a~1d的结构经过1H NMR,13C NMR,IR及HRMS的表征,并对四个化合物进行了HL-60细胞株分化活性能力的测试.结果表明化合物1a~1d都具有潜在的药物活性,其中含氟维甲酸类似物1b和1d拥有较商品化药物全反式维甲酸(ATRA)更低的IC50值.
The key intermediate boronic acid 2 was synthesized via sequential reactions of Friedel-Crafts alkylation, bromi-nation and nucleophilic reaction by using anisole as starting material. Hydroxyacetone was converted to bromide compound 3 by the Wittig reaction, bromination, Arbuzov reaction and Horner-Wadsworth-Emmons (HWE) reaction. Three novel retinoid derivatives 1a~1c can be obtained via the Suzuki coupling reaction of the boronic acid 2 with bromide compound 3, methyl 4-bromo-2-fluorobenzoate (4) or methyl 6-bromonicotinate (5) and followed by hydrolysis of the corresponding esters. In addition, trifluoromethyl substituted retinoid derivative 1d was synthesized via sequential reactions of Friedel-Crafts alkyla-tion, nitration, trifluoromethylation, reduction and nucleophilic reaction with bromobenzene as strarting material. The struc-tures of four new retinoid derivatives 1a~1d were confirmed by 1H NMR, 13C NMR, IR and HRMS analyses. Furthermore, the inducing differentiation abiliti