Publication Cover
Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 37, 2007 - Issue 8
115
Views
7
CrossRef citations to date
0
Altmetric
Original Articles

Phytochemicals from Echinacea and Hypericum: A Direct Synthesis of Isoligularone

, &
Pages 1251-1257 | Received 02 Oct 2006, Published online: 12 Apr 2007

References

  • Kraus , G. A. and Kim , J. 2004 . Tandem Diels–Alder reaction/radical cyclizations for the rapid construction of bridged ring systems . Tetrahedron Lett. , 45 : 1457 – 1459 .
  • Kraus , G. A. and Kim , I. 2003 . A direct route to isoflavan quinones: The synthesis of colutequinones A and B . Tetrahedron , 59 : 7935
  • Parsons , P. J. , Penkett , C. S. and Shell , A. J. 1996 . Tandem reactions in organic synthesis . Chem. Rev. , 96 : 195 For excellent reviews on tandem reactions, see
  • Winkler , J. D. 1996 . Tandem Diels–Alder cycloadditions in organic synthesis . Chem. Rev. , 96 : 167 – 176 .
  • Kraus , G. A. and Kim , J. 2004 . Tandem Diels–Alder/ene reactions . Org. Lett. , 6 : 3115 – 3117 .
  • Fraga , B. M. 2004 . Natural sesquiterpenoids . Nat. Prod. Rep. , 21 : 669 – 693 .
  • Sato , T. , Tada , M. , Takahashi , T. , Horibe , I. , Ishii , H. , Iwata , T. , Kuriyama , K. , Tamura , Y. and Tori , K. 1977 . Chem. Lett. , : 1191 – 1194 .
  • Sugama , K. , Hayashi , K. and Mitsuhashi , H. 1985 . Eremophilenolides from Petasites japonicus . Phytochemistry , 24 : 1531 – 1535 .
  • Ishii , H. , Tozyo , T. and Minato , H. 1966 . J. Chem. Soc. C , : 1545
  • Koike , T. , Takeuchi , N. , Ohta , T. and Tobinaga , S. 1999 . Total synthesis of racemic ligularone and isoligularone . Chem. Pharm. Bull. , 47 : 897 – 899 .
  • Miyashita , M. , Kumazawa , T. and Yoshikoshi , A. 1980 . 1‐Nitro‐1‐(phenylthio)propene as a new nitro olefin reagent for 3‐methylfuran annulation and its application to the synthesis of some furanoterpenoids . J. Org. Chem. , 45 : 2945 – 2950 .
  • Renslo , A. R. and Danheiser , R. L. 1998 . Synthesis of substituted pyridines via regiocontrolled [4+2] cycloadditions of oximinosulfonates . J. Org. Chem. , 63 : 7840 – 7850 .
  • Kim , J. H. , Lim , H. J. and Cheon , S. H. 2003 . A facile synthesis of (6S,1′S)‐(+)‐hernandulcin and (6S,1′R)‐(+)‐epihernandulcin . Tetrahedron , 59 : 7501 – 7507 .
  • Ohta , Y. , Doe , M. , Morimoto , Y. and Kinoshita , T. 2000 . Regiospecific synthesis of 2‐substituted furanonaphthoquinones . J. Heterocycl. Chem. , 37 : 731 – 734 .
  • Corey , E. J. and Xiang , Y. B. 1987 . A method for the off‐ring functionalization of carbon‐substituted furans. Synthesis of kahweol from cafestol . Tetrahedron Lett. , 28 : 5403 – 5406 .
  • Pearson , A. J. , Chen , Y. S. , Han , G. R. , Hsu , S. Y. and Ray , T. 1985 . A new method for the oxidation of alkenes to enones: An efficient synthesis of δ5‐7‐oxo steroids . J. Chem. Soc., Perkin Trans. 1 , : 267 – 273 .
  • Tada , M. , Sato , T. , Takahashi , T. , Tori , K. , Horibe , I. and Kuriyama , K. 1981 . Conformational equilibriums of eremophilanes, naturally occurring cis‐decalin derivatives, studied by NMR and CD spectroscopy . J. Chem. Soc., Perkin Trans. 1 , : 2695 – 2701 .

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.