Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
Synthetic Studies on Lignans and Related Compounds. IV. Synthesis of Taiwanin C and E, and Justicidin D (Neojusticin A), E, and F (Taiwanin E Methyl Ether)
ZENICHI HORIIMOTOHIDE TSUJIUCHIKENICHI KANAITAKEFUMI MOMOSE
Author information
JOURNAL FREE ACCESS

1977 Volume 25 Issue 7 Pages 1803-1808

Details
Abstract
The structure of taiwanin E was re-examined with an empirical proton magnetic resonance (1H-NMR) rule for the lactone methylene in aromatized naphthalide lignans, and concluded to be 5 instead of 4 on the basis of their unambiguous synthesis. Related lignans : taiwanin C (3), justicidin D (neojusticin A) (6), E (7), and F (taiwanin E methyl ether) (8) were also synthesized. The 1H-NMR rule was found to be the case also with the lignans synthesized.
Content from these authors
© The Pharmaceutical Society of Japan
Previous article Next article
feedback
Top