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第 49 卷第 5 期Vol. 49 No. 5
2019 年 10 月Oct 2019

所屬欄目:醫藥及中間體

他達那非關(guān)鍵中間體(1R,3R)-1-(3,4-亞甲基二氧苯基)-2,3,4,9-四氫-1H-吡啶并[3,4-b]吲哚-3-甲酸甲酯鹽酸鹽的合成
高艷蓉1,唐文強1,2*,仝紅娟1,2,張翠亞1,劉 斌1,2 (1. 陜西國際商貿學(xué)院 醫藥學(xué)院,陜西 西安712046;2. 陜西省中藥綠色制造技術(shù)協(xié)同創(chuàng )新中心 陜西 西安712046)
摘 要:以D-色氨酸為原料,通過(guò)甲酯化和Pictet-spengler 2步反應,合成了他達那非關(guān)鍵中間體(1R,3R)-1-(3,4-亞甲基二氧苯基)-2,3,4,9-四氫-1H-吡啶并[3,4-b]吲哚-3-甲酸甲酯鹽酸鹽,2步反應總收率為87.4%。其結構經(jīng)核磁共振氫譜(1H NMR)和質(zhì)譜(ESI-MS)確證?疾炝巳軇、物料比、溫度和反應時(shí)間4個(gè)因素對Pictet-spengle反應的影響。結果表明,在反應溶劑為異丙醇、物料比n(胡椒醛)∶n(D-色氨酸甲酯鹽酸鹽)= 1.3∶1.0、90℃反應13 h的優(yōu)化條件下,目標產(chǎn)物的收率達92.5%。
關(guān)鍵詞:他達那非;關(guān)鍵中間體;Pictet-spengler反應
中圖分類(lèi)號:R97  文獻標識碼:A  文章編號:1009-9212(2019)05-0022-04
Synthesis of Key Intermediate of Tadalafil (1R,3R)-Methyl 1-(benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate hydrochloride
GAO Yan-rong1, TANG Wen-qiang1,2*, TONG Hong-juan1,2, ZHANG Cui-ya1, LIU Bin1,2 (1. School of Pharmacy, Shaanxi Institute of International Trade & Commerce, Xi'an 712046, China; 2. Collaborative Innovation Center of Green Manufacturing Technology for Traditional Chinese Medicine in Shaanxi Province, Xi'an 712046, China)
Abstract:(1R,3R)-Methyl 1-(benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate hydrochloride, the key intermediate of Tadalafil, was synthesized from D-tryptophan through a two-step reaction including esterification and Pictet-spengler reaction with a total yield of 87.4%. The structure of the product and intermediate were confirmed by 1H NMR and ESI-MS. The optimal reaction conditions of Pictet-spengler reaction were obtained as followings: isopropanol was used as solvent; the optimal molar ratio of piperonyl aldehyde and D-tryptophan methyl ester hydrochloride was 1.3; the mixture was reacted at 90℃ for 14 h. The product (Tadalafil intermediate) was obtained with a yield of 92.5% under optimal reaction condition.
Key words:tadalafil; key intermediate; Pictet-spengler reaction
基金項目: 陜西省教育廳專(zhuān)項科研計劃項目(19JK0101),陜西省高?茀f(xié)青年人才托舉計劃項目(20180312),陜西國際商貿學(xué)院中藥質(zhì)量標志物創(chuàng )新團隊(SSY18TD02)。
作者簡(jiǎn)介:高艷蓉(1989-),女,甘肅張掖人,碩士研究生,研究方向:有機合成及分析(E-mail:544367795@qq.com)。
聯(lián) 系 人:唐文強,博士,講師,研究方向:藥物合成(E-mail:twqsxcq@163.com)。
收稿日期:2019-08-26
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