Uragogin and blepharodin, unprecedented hetero-Diels–Alder adducts from Celastraceae species

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• 作者：Marvin J. N&#xfa ; ñ ; ez^a ; ^b ; Marí ; a L. Kennedy^a ; ^c ; Ignacio A. Jimé ; nez^a ; Isabel L. Bazzocchi^a ; ^{ilopez@ull.es}
• 关键词：Celastraceae ; Hetero-Diels– ; Alder adduct
• 刊名：Tetrahedron
• 出版年：2011
• 出版时间：29 April 2011
• 年：2011
• 卷：67
• 期：17
• 页码：3030-3033
• 全文大小：244 K

文摘

Uragogin and blepharodin were isolated from Crossopetalum uragoga and Maytenus magellanica, respectively. They represent the first examples of a triterpene–neolignan ester and a heptacyclic arylpropanoid-nor-triterpenephenol, hetero-Diels–Alder adducts built with dioxane bridges. Their proposed biosynthetic route is discussed.