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Citation: JIANG Rong-Ying, FANG Zhi-Jie, GAO Jun-Feng. A New Synthetic Method for Key Intermediates Toward (s)-(+)-Tylophorine[J]. Chinese Journal of Applied Chemistry, ;2006, 23(12): 1419-1421. shu

A New Synthetic Method for Key Intermediates Toward (s)-(+)-Tylophorine

1.
Department of Chemistry, Nanjing University of Science & Technology, Nanjing 210094

Corresponding author: FANG Zhi-Jie,
Received Date: 23 December 2005
Available Online: 28 April 2006

Two key intermediates toward tylophorine,2,3,6,7-tetramethoxyphenanthrene-9carboxylic acid(6a) and 2,3,6,7-tetramethoxy-9-cyanophenanthrene(6b),were prepared from(E)-2,3-bis(3,4-dimethoxyphenyl)acrylic acid(5a) and (Z)-2,3-bis(3,4-dimethoxyphenyl) acrylonitrile(5b),under the catalysis of(phenyliodine) diacetate(PIDA,2).Their yields were 65.83% and 64.76% respectively.Their structures were characterized by means of ¹H NMR.
- phenyliodine diacetate,
- catalyst,
- annulation
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