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作 者:李谷才[1] 尹端沚[2] 练文柳[3] 汪勇先[2]
机构地区:[1]湖南工程学院化学化工系,湖南湘潭411104 [2]中国科学院上海应用物理研究所放射性药物研究中心,上海嘉定201800 [3]中南大学化学化工学院,湖南长沙410083
出 处:《中南大学学报(自然科学版)》2007年第6期1129-1134,共6页Journal of Central South University:Science and Technology
基 金:国家自然科学基金资助项目(30371634);2007年度湖南工程学院科研启动基金资助项目(0785)
摘 要:以3-甲氧基苯酚、4-酮-3-甲酸甲酯哌啶盐酸盐和对羟基苯甲醛为原料,通过分子间环加成反应和N-烷基化反应,合成了一种潜在的多巴胺D4受体拮抗剂3-(4-羟基苄基)-8-甲氧基-1,2,3,4-四氢苯并吡喃[3,4-c]吡啶-5-酮。采用红外光谱、质谱、氢核磁共振谱和元素分析等手段对中间体及产物进行表征。研究结果表明:在分子间环加成反应中,当反应物3-甲氧基苯酚、4-酮-3-甲酸甲酯哌啶盐酸盐与硫酸的物质的量比为1:1:30、反应时间为48 h时,最高收率为49.2%;在N-烷基化反应中,当反应物8-甲氧基-1,2,3,4-四氢苯并吡喃[3,4-c]吡啶-5-酮、4-羟基苯甲醛与三乙酸基硼氢化钠的物质的量比为2:4:5、反应时间为20 h时,最高收率为51.8%。3-(4-Hydroxybenzyl)-8-methoxy-1, 2, 3, 4-tetrahydrochromeno[3, 4-c]pyridin-5-one was prepared as a potential dopamine D4 receptor antagonist from 3-methoxyphenol, methyl-4-oxo-3-piperidine carboxylate hydrochloride and 4-hydroxybenzaldehyde through a two-step reaction and their structures were confirmed by infrared spectroscopy OR), eleetrospray ionisation-mass spectrometry (ESI-MS), 1H nuclear resonance spectroscopy (NMR) and elemental analysis. The results show that 8-methoxy-1, 2, 3, 4-tetrahydrochromeno [3, 4-c]pyridin-5-one(I) is the product of the intermolecular cycloaddition reaction between 3-methoxyphenol and methyl-4-oxo-3-piperidine carboxylate hydrochloride with yield of 49.2% under the conditions as follows: the molar ratio of n(3-methoxyphenol): n(methyl-4-oxo-3-pioerdine carboxylate hydrochloride):n(sulfuric acid) is 1:1:30, and reaction time is 48 h; and 3-(4-hydroxybenzyl)-8-methoxy-1, 2, 3, 4-tetrahydrochromeno[3, 4-c]pyridin-5-one is the product of the N-alkylation reaction with yield of 51.8% under the conditions as follows: the molar ratio of n(I):n(4-hydroxy benzaldehyde):n(sodium triaeetoxyborohydride) is 2:4:5, and reaction time is 20 h.
关 键 词:苯并吡喃[3 4-c]吡啶-5-酮 多巴胺D4受体 合成
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