Concise Synthesis of (±)-Rhinacanthin A, Dehydro α-Lapachone, and β-Lapachone, and Pyranonaphthoquinone Derivatives

被引:6
|
作者
Wang, Xue [1 ]
Chen, Ye [1 ]
Lee, Yong Rok [1 ]
机构
[1] Yeungnam Univ, Sch Chem Engn & Technol, Gyongsan 712749, South Korea
基金
新加坡国家研究基金会;
关键词
Pyranonaphthoquinones; Rhinacanthin A; Dehydro-alpha-lapachone; beta-Lapachone; PROSTATE-CANCER CELLS; TABEBUIA-AVELLANEDAE; NAPHTHOQUINONES; APOPTOSIS; CONSTITUENTS; INHIBITORS; INDUCTION; RHINACANTHIN; SUPEROXIDE; TARGET;
D O I
10.5012/bkcs.2011.32.1.153
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A concise synthesis of (+/-)-rhinacanthin A is achieved in two steps by epoxidation of dehydro-alpha-lapachone, followed by chemo- and regioselective reduction. Dehydro-alpha-lapachone was also synthesized in two steps starting from 4-methoxy-1-naphthol by ethylenediamine diaetate (EDDA)-catalyzed benzopyran formation and a CAN-mediated oxidation reaction. beta-Lapachone was synthesized in three steps from 4-methoxy-1-naphthol by benzopyran formation, catalytic hydrogenation, and Jones oxidation. As additional reactions, synthesis of pyranonaphthoquinone derivatives with the pyranokunthone B skeleton has been achieved in a single step from readily available 2-hydroxy-6-methoxy1,4-naphthoquinone and 2-hydroxy-7-methoxy-1,4-naphthoquinone.
引用
收藏
页码:153 / 156
页数:4
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