WO2017215019A1 - 一种合成雷迪帕韦手性中间体的新方法 - Google Patents

一种合成雷迪帕韦手性中间体的新方法 Download PDF

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WO2017215019A1
WO2017215019A1 PCT/CN2016/086875 CN2016086875W WO2017215019A1 WO 2017215019 A1 WO2017215019 A1 WO 2017215019A1 CN 2016086875 W CN2016086875 W CN 2016086875W WO 2017215019 A1 WO2017215019 A1 WO 2017215019A1
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Prior art keywords
heptane
chiral intermediate
carboxylic acid
synthesizing
azaspiro
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PCT/CN2016/086875
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English (en)
French (fr)
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石常青
王刚
汪兆伟
李剑民
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成都百事兴科技实业有限公司
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Priority to RU2017123246A priority Critical patent/RU2705809C2/ru
Publication of WO2017215019A1 publication Critical patent/WO2017215019A1/zh

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D209/00Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/02Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
    • C07D209/54Spiro-condensed
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/55Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

Definitions

  • the invention discloses a novel method for synthesizing a chiral intermediate of radiipavir.
  • the specific synthesis method comprises the following steps: using 1,1-dihalomethylcyclopropane and N-Boc-glycine ethyl ester in an alkaline environment
  • a spiro compound is obtained by a ring closure; the spiro compound is hydrolyzed by saponification and deprotected by BOC to give a 5-azaspiro[2,4]heptane-6-carboxylic acid racemate; 5-azaspiro[2 , 4] heptane-6-carboxylic acid racemate was asymmetrically resolved to obtain S-5-azaspiro[2,4]heptane-6-carboxylic acid.
  • the invention provides a novel method for synthesizing a chiral intermediate of radiipavir, which improves atomic economy, reduces production cost, is simple in synthesis, convenient in preparation, and is advantageous for industrial

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Indole Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

本发明公开了一种合成雷迪帕韦手性中间体的新方法,具体合成方法包括以下步骤:由1,1-双卤甲基环丙烷和N-Boc-甘氨酸乙酯在碱性环境下关环制得螺环化合物;螺环化合物经皂化水解,脱BOC保护,得到5-氮杂螺环[2,4]庚烷-6-羧酸消旋体;5-氮杂螺环[2,4]庚烷-6-羧酸消旋体经不对称拆分制得S-5-氮杂螺环[2,4]庚烷-6-羧酸。本发明提供的一种合成雷迪帕韦手性中间体的新方法,该方法提高了原子经济性,降低生产成本,合成简单、制备方便、有利于工业化大规模生产。

Description

无标题
本发明公开了一种合成雷迪帕韦手性中间体的新方法,具体合成方法包括以下步骤:由1,1-双卤甲基环丙烷和N-Boc-甘氨酸乙酯在碱性环境下关环制得螺环化合物;螺环化合物经皂化水解,脱BOC保护,得到5-氮杂螺环[2,4]庚烷-6-羧酸消旋体;5-氮杂螺环[2,4]庚烷-6-羧酸消旋体经不对称拆分制得S-5-氮杂螺环[2,4]庚烷-6-羧酸。本发明提供的一种合成雷迪帕韦手性中间体的新方法,该方法提高了原子经济性,降低生产成本,合成简单、制备方便、有利于工业化大规模生产。

Claims (4)

  1. 一种合成雷迪帕韦手性中间体的新方法,所述雷迪帕韦手性中间体为S-5-氮杂螺环[2,4]庚烷-6-羧酸,其特征在于,合成路线为:
    Figure PCTCN2016086875-appb-100001
    式中,X为卤素;
    具体合成方法包括以下步骤:
    S1.由1,1-双卤甲基环丙烷和N-Boc-甘氨酸乙酯在碱性环境下关环制得式A化合物;
    S2.式A化合物经皂化水解,脱BOC保护,得到5-氮杂螺环[2,4]庚烷-6-羧酸消旋体;
    S3. 5-氮杂螺环[2,4]庚烷-6-羧酸消旋体经不对称拆分制得S-5-氮杂螺环[2,4]庚烷-6-羧酸。
  2. 如权利要求1所述的一种合成雷迪帕韦手性中间体的新方法,其特征在于,所述1,1-双卤甲基环丙烷的合成路线为:
    Figure PCTCN2016086875-appb-100002
    式中,MX中的M为金属元素,X为卤素;
    具体合成方法为:
    (1)由环丙二甲醇与甲基黄磺酰氯反应生成环丙基二甲磺酸酯;
    (2)环丙基二甲磺酸酯与金属卤化物反应生成二卤代环丙烷。
  3. 如权利要求1所述的一种合成雷迪帕韦手性中间体的新方法,其特征在于,步骤S1在碱性反应溶剂中进行,其中,所述反应溶剂为酰胺类或醚类溶剂;所述碱为醇钾、醇钠、氢化钠或氢化钾中的任意一种;反应的温度为-10~100℃。
  4. 如权利要求1所述的一种合成雷迪帕韦手性中间体的新方法,其特征在于,步骤S2中所述皂化水解是在碱性溶剂中进行,所述的溶剂为醇类或醚类中至少一种,所述的碱为无机强碱;所述脱BOC保护使用的酸为盐酸、硫酸、磷酸或硝酸中的任意一种;反应的温度为0~100℃。
PCT/CN2016/086875 2016-06-17 2016-06-23 一种合成雷迪帕韦手性中间体的新方法 WO2017215019A1 (zh)

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CN106008316A (zh) 2016-10-12

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