Triterpene acids of some representatives ofEucalyptus

Spasmolytic Constituents from Eucalyptus camaldulensis var. obtusa Leaves

“…The known compounds (2)(3)(4)(5) were identified by comparison of their spectral data with those of the corresponding constituents reported in the literature. 10,[12][13][14][19][20][21][22][23] Our assignments of the 13 C and 1 H NMR of -sitosterol 3-O--D-glucopyranoside agreed well with the published assignments.…”

“…obtusa have yielded various known terpenoids and flavonoids. [2][3][4][5][6][7] Several triterpenoids have previously been reported by our group, namely eucalyptic acid, eucalyptolic acid, 8 camaldulic acid, camaldulensic acid, and camaldulenic acid, 9 along with a series of known triterpenoids.…”

Triterpenoids from the Leaves of Eucalyptus camaldulensis var. obtusa

“…var obtusa are used in the indigenous system of medicine to cure various human ailments such as diarrhea, chronic dysentery, malaria, infection of the upper respiratory tract, and certain skin diseases . Oil and some flavonoids of the plant are found to possess antifungal and antibacterial activity. , Phytochemical investigations by different groups of workers on different parts of the plant have led to the isolation and identification of various known terpenoids and flavonoids. − In the literature only two known triterpenoids, oleanolic and maslinic acids, are reported from this source .…”

“…2,3 Phytochemical investigations by different groups of workers on different parts of the plant have led to the isolation and identification of various known terpenoids and flavonoids. [2][3][4][5][6][7] In the literature only two known triterpenoids, oleanolic and maslinic acids, are reported from this source. 5 The present chemical investigation on the fresh and uncrushed leaves of the plant led to the isolation and structure elucidation of three new pentacyclic triterpenoids, namely, camaldulic acid (1), camaldulensic acid (2), and camaldulenic acid (3), and the known triterpenoid ursolic acid lactone.…”

“…[2][3][4][5][6][7] In the literature only two known triterpenoids, oleanolic and maslinic acids, are reported from this source. 5 The present chemical investigation on the fresh and uncrushed leaves of the plant led to the isolation and structure elucidation of three new pentacyclic triterpenoids, namely, camaldulic acid (1), camaldulensic acid (2), and camaldulenic acid (3), and the known triterpenoid ursolic acid lactone. 8 This is the first report of the isolation of the latter compound from this plant.…”