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ID:32229341
大小:1.54 MB
页数:52页
时间:2019-02-01
《阿片受体k型选择性激动剂依那朵林的合成的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、隧冀受体K亚型选撵牲激动剂依那朵拣酌合成研究f《选择性kappa阿片受体激动簧4幂仅具有很强的镇痛作用,还克服了与m1.1受黎翱美的成癔、呼吸却剽等潮律嚣l。尽管kap叠a受傣激动裁仍然有镇静、荆尿等副作用,但随着外周选择性激动剂的出现.可成为非常有前景的镇犏药。依餐条蒜巽有异常螽弱kappa受舔亲争力争选择惶,具有强效抗感受伤害作用.尤其对机械和化学伤害性刺激优于熟刺激,且其作用可被纳络酮拮抗。另外,依那朵林还可作为神经保护剂.用于治疗中风及头部创伤。嚣以燕得进行合成蟹究。卜—y一以阍苯.z-酚为起始原料,经常压催{匕氢{匕得到1,3一环己二翻,和氯己醛缩合后,经R
2、efoi‘matsky反应后,周鼠醌脱氢,得到4一苯并呋喃乙酸乙黯,再水解酸化,得到依那朵林合成中的关键中坶俸4一苯并呋喃乙酸。以1.4环己暑酮为原料,经选择性保护,得到单缩酮(5).缝梅氏反应、硼氢化和过氧化氯反应得到8一羟基一t,4一二氧杂螺[4.5]癸烷一8一游簿≤7),在甲浣磺酰氛及三乙骚的传爱下,舔舍得巅环滤醚《8;,然后高氯酸脱保护,四氢锶铝还原成薜,和对甲豢磺酰氯在OoC以下成翡,在DBU作用下去除甲苯磺酸酯基.得到l一氧杂螺[4.5j癸烷一7一潆《12),躐氯遣氢摹甲竣环氯粥反应,缮到环氧纯耪的鼷反暑翡零,不分离直接甲胺化j氯璜黢夏应及吡略娩化,得列二
3、胺(16)。最后和4一苯并呋喃乙酸在倡合剂CDI催化下,生成目标化合物依那朵林.N一甲基一N一(7一4、dreceptor,suchasaddictionatldrespiration.Althoughwithsomeundesirablecentralsideeffects.kapDaopioidreceptoragoniststillhavepracticalsigificaneefort{1etherapeuticpurposes.Enadoline.apotentkappaopioidreceptoragonistHrithhighaffinit3’andselectivit;)7,producedpotentantiuocicepitveeffectagain5、st’mechanicalandchemicalnoxiousstimulus.butwasineffectiveagainstthermalstimulus.TheantinoceciGepticeeffectwascompletely1.eversedbvnaloxoneMoreover,Enadolineactasneuroprotefiveagentinischaemicstokeandtrulna.Condensationof1,3一cyclohexadione?whichwaspreparedfromresorcinolbv.1lOrnlalpressur6、ehydrogenation.withchlolIacetaldehyde.reformatsb,reactionanddeh3·drogenationunderchloranil.got4.ethylacetatebenzofuran。whichwasfollowedbysaponificationandacidificationtogive4-benzofilranaceticacid。1,4一e3,clohexanedione!viaselectiveprotectionofcarbonylgroup,gotmonoethyleneketal(5),thenth7、roughGridnardreaction、hydroborationtoform8-hydroxw/·1,4-dioxaspiro【4.5]decan-8-propallol(7).1一oxaspiro[4.5)decan一8-ol(10)wasobtainedthroughspirocyclizationbytreatmentwithmethanesulfon3,1chlorideandtriethylamine.acidhydrolysistocleavetheethyleneketalgroupandreductionwithlithiuma
4、dreceptor,suchasaddictionatldrespiration.Althoughwithsomeundesirablecentralsideeffects.kapDaopioidreceptoragoniststillhavepracticalsigificaneefort{1etherapeuticpurposes.Enadoline.apotentkappaopioidreceptoragonistHrithhighaffinit3’andselectivit;)7,producedpotentantiuocicepitveeffectagain
5、st’mechanicalandchemicalnoxiousstimulus.butwasineffectiveagainstthermalstimulus.TheantinoceciGepticeeffectwascompletely1.eversedbvnaloxoneMoreover,Enadolineactasneuroprotefiveagentinischaemicstokeandtrulna.Condensationof1,3一cyclohexadione?whichwaspreparedfromresorcinolbv.1lOrnlalpressur
6、ehydrogenation.withchlolIacetaldehyde.reformatsb,reactionanddeh3·drogenationunderchloranil.got4.ethylacetatebenzofuran。whichwasfollowedbysaponificationandacidificationtogive4-benzofilranaceticacid。1,4一e3,clohexanedione!viaselectiveprotectionofcarbonylgroup,gotmonoethyleneketal(5),thenth
7、roughGridnardreaction、hydroborationtoform8-hydroxw/·1,4-dioxaspiro【4.5]decan-8-propallol(7).1一oxaspiro[4.5)decan一8-ol(10)wasobtainedthroughspirocyclizationbytreatmentwithmethanesulfon3,1chlorideandtriethylamine.acidhydrolysistocleavetheethyleneketalgroupandreductionwithlithiuma
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