Triterpenoids from Eucalyptus camaldulensis Dehnh . Tissue Cultures

作者：Dimitroula Tsiri, Nektarios Aligiannis, Konstantia Graikou, Caroline G. Spyropoulos, İoanna Chinou · 发表于：Helvetica Chimica Acta · 年份：2008 · DOI：10.1002/hlca.200890226 · 被引用次数：12 · 研究领域：Natural product bioactivities and synthesis、Plant biochemistry and biosynthesis、Morinda citrifolia extract uses

Abstract A chemical study on tissue cultures from leaves and flowers of E. camaldulensis Dehnh. afforded the new natural product (2α,3β)‐2,3,23‐trihydroxy‐13,28‐epoxyurs‐11‐en‐28‐one (dryobalanolide) together with the known pentacyclic triterpenoids: betulinic acid, oleanolic acid, ursolic acid, (2α,3β)‐2,3,23‐trihydroxyolean‐12‐en‐28‐oic acid (arjunolic acid), (2α,3β)‐2,3,23‐trihydroxyurs‐12‐en‐28‐oic acid (asiatic acid), (2α)‐2‐hydroxyursolic acid, (2α)‐2‐hydroxyoleanolic acid (maslinic acid), as well as β‐sitosterol. The extracts and the isolated compounds were evaluated against eleven human pathogenic microorganisms, exhibiting a very interesting antibacterial spectrum of activities.