Total synthesis of two natural phenanthrenes: confusarin and a regioisomer
摘要:
The title compounds were synthesized by radical cyclization of the corresponding stilbenes intermediates. The latter ones arose from a Wittig reaction in a stereoselective manner (Z isomer is either the only one or the major one). Confusarin (1) was prepared in 13 steps from gallic acid. Its regioisomer (2) was obtained in five steps from syringaldehyde. (c) 2007 Elsevier Ltd. All rights reserved.
MAJUMDER, P. L.;SEN, R. C., PHYTOCHEMISTRY, 30,(1991) N, C. 2432-2434
作者:MAJUMDER, P. L.、SEN, R. C.
DOI:——
日期:——
[EN] USE OF PHENANTHRENE DERIVATIVES AS ANTI-INFLAMMATORY AGENTS, SYNTHESIS METHOD AND INTERMEDIATE PRODUCTS<br/>[FR] UTILISATION DE DERIVES DE PHENANTHRENES EN TANT QU'AGENTS ANTI-INFLAMMATOIRES, PROCEDE DE SYNTHESE ET PRODUITS INTERMEDIAIRES
申请人:FABRE PIERRE DERMO COSMETIQUE
公开号:WO2006089881A1
公开(公告)日:2006-08-31
[EN] The invention concerns the use of phenanthrene derivatives of formula (I), wherein R1 and R2 represent a hydroxyl or methoxy radical; R3 represents a hydrogen atom or a hydroxyl radical optionally protected by a suitable protecting group; R4 represents a hydrogen atom or a methoxy radical, for making a medicine for inhibiting inflammatory reactions. The invention also concerns a method for dermo-cosmetic skin treatment which consists in applying on the skin a composition comprising at least one phenanthrene derivative of formula (I). Finally, the invention concerns a method for synthesis of said phenanthrenes of formula (I) as well as the intermediate products. [FR] La présente invention concerne l'utilisation de dérivés de phénanthrène de formule (I) dans laquelle Rl et R2 représentent un radical hydroxyle ou méthoxy, R3 représente un atome d'hydrogène ou un radical hydroxyle éventuellement protégé par un groupe protecteur approprié, R4 représente un atome d'hydrogène ou un radical méthoxy, pour la fabrication d'un médicament destiné à inhiber les réactions inflammatoires. La présente invention concerne également une méthode de traitement dermo-cosmétique des peaux consistant à appliquer sur la peau une composition comprenant au moins un dérivé de phénanthrène de formule (I). Enfin, la présente invention concerne un procédé de synthèse de ces phénanthrènes de formules (I) ainsi que les produits intermédiaires.
Total synthesis of two natural phenanthrenes: confusarin and a regioisomer
作者:Sylvie Radix、Roland Barret
DOI:10.1016/j.tet.2007.09.052
日期:2007.12
The title compounds were synthesized by radical cyclization of the corresponding stilbenes intermediates. The latter ones arose from a Wittig reaction in a stereoselective manner (Z isomer is either the only one or the major one). Confusarin (1) was prepared in 13 steps from gallic acid. Its regioisomer (2) was obtained in five steps from syringaldehyde. (c) 2007 Elsevier Ltd. All rights reserved.
TUCHINDA, PATOOMRATANA;UDCHACHON, JINDA;KHUMTAVEEPORN, KANJAI;TAYLOR, WAL+, PHYTOCHEMISTRY, 27,(1988) N 10, C. 3267-3271