有机化学 ›› 2014, Vol. 34 ›› Issue (9): 1829-1839.DOI: 10.6023/cjoc21404007 上一篇    下一篇

研究论文

SGLT2抑制剂3-脱氧达格列净简便的汇聚式合成方法

高志刚a, 张大同a, 魏鹏a, 王哲c, 谢亚非b, 刘钰强b, 徐为人b, 汤立达b, 赵桂龙a,b   

  1. a 齐鲁工业大学化学与制药工程学院, 济南 250353;
    b 天津药物研究院天津市新药设计与发现重点实验室, 天津 300193;
    c 山东中医药大学第一临床医学院, 济南 250014
  • 收稿日期:2014-04-03 修回日期:2014-05-06 发布日期:2014-05-07
  • 通讯作者: 张大同, 赵桂龙 E-mail:zhao_guilong@126.com; datong_zhang@163.com
  • 基金资助:

    国家自然科学基金(No. 21302141)、天津市科技支撑计划重点项目(No. 10ZCKFSH01300)和天津市自然科学基金(No. 14JCQNJC12900)资助项目.

A Facile Convergent Synthetic Procedure for 3-Deoxydapagliflozin as SGLT2 Inhibitor

Gao Zhiganga, Zhang Datonga, Wei Penga, Wang Zhec, Xie Yafeib, Liu Yuqiangb, Xu Weirenb, Tang Lidab, Zhao Guilonga,b   

  1. a School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology, Jinan 250353;
    b Tianjin Key Laboratory of Molecular Design and Drug Discovery, Tianjin Institute of Pharmaceutical Research, Tianjin 300193;
    c First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan 250014
  • Received:2014-04-03 Revised:2014-05-06 Published:2014-05-07
  • Supported by:

    Project supported by the National Natural Science Foundation of China (No. 21302141), the Key Projects of Tianjin Science and Technology Support Plan (No. 10ZCKFSH01300) and the Tianjin Municipal Natural Science Foundation (No. 14JCQNJC12900).

3-脱氧达格列净(1)是一个高选择性的强效钠依赖性葡萄糖转运子2 (SGLT2)抑制剂. 本研究发现了一条以廉价的α-D-甲基吡喃葡萄糖(2)为起始原料的简便的3-脱氧达格列净(1)的汇聚式合成路线,共13步,总产率38%. 在此过程中系统研究了4,6-O-苄叉-α-D-甲基吡喃葡萄糖苷(3)中2-OH和3-OH的选择性保护策略,使用NOE (nuclear overhauser effect)技术对区域异构体进行了结构鉴定,并对区域异构体的相对比例和相对极性提出了合理解释; 在此过程中对4,6-O-苄叉-2-O-叔丁基二苯基硅基-α-D-甲基吡喃葡萄糖(4)中葡萄糖片段上位阻较大3-OH的脱氧策略也进行了系统研究,最终获得了最优的脱氧策略. 该路线为一条汇聚式路线,具有廉价、操作简便的特点,可以作为一种高效合成3-脱氧苯基C-葡萄糖苷类化合物的通用方法.

关键词: SGLT2抑制剂, 3-脱氧达格列净, 区域选择性, 脱氧, 汇聚式合成

3-Deoxydapagliflzoin (1) is a highly selective, potent sodium-dependent glucose transporter 2 (SGLT2) inhibitor discovered earlier. A facile convergent synthetic procedure for 3-deoxydapagliflzoin (1) was developed in 13 steps and in 38% overall yield starting from inexpensive methyl α-D-glucopyranoside 2. Regioselective protection of 2-OH and 3-OH in the key intermediate methyl 4,6-O-benzylidene-α-D-glucopyranoside 3 was systematically studied; the regioisomers thus obtained were distinguished from each other with nuclear overhauser effect (NOE) and their ratios and relative polarities were rationally explained. The strategy for deoxygenation of the sterically hindered 3-OH in another key intermediate 4,6-O-benzylidene-2-O-t-butyldiphenylsilyl-α-D-glucopyranoside (4) was also systematically studied. The facile synthetic route is characterized by convergence characteristics and inexpensive starting material, also representing an alternative general synthetic approach to phenyl 3-deoxy-C-glucosides.

Key words: SGLT2 inhibitor, 3-deoxydapagliflozin, regioselectivity, deoxygenation, convergent synthesis