5986-39-0Relevant articles and documents
DAMMARANE GLYCOSIDES FROM AERIAL PARTS OF NEOALSOMITRA INTEGRIFOLIOLA
Fujita, Seiji,Kasai, Ryoji,Ohtani, Kazuhiro,Yamasaki, Kazuo,Chiu, Ming-Hua,et al.
, p. 465 - 472 (1995)
From the aerial parts of Neoalsomitra integrifoliola, a new 20,24-epoxydammarane triterpene and 11 new glycosides were isolated along with a known cucurbitacin glycosides, seven known cucurbitacins and neoalsoside A.The latter compound has previously been isolated from the rhizomes of this plant.The structures of the mew compounds have been established by spectroscopic and chemical means. - Key words: Neoalsomitra integrifoliola; Cucurbitaceae; aerial parts; dammarane glycosides; neoalsosides A2, A3, A4, A5, C1, C2, D1, E1, F1, G1 and H1; neoalsogenins B, C, G and H; 20,24-epoxydammarane triterpenes.
TRITERPENOIDS FROM THE LEAVES OF Betula lanata
Pokhilo, N. D.,Malinovskaya, G. V.,Makhan'kov, V. V.,Anufriev, V. F.,Uvarova, N. I.
, p. 368 - 372 (2007/10/02)
From the unsaponifiable fraction of an ethereal extract of the leaves of Betula lanata, in addition to 3-epiocotillol (I) we have isolated a new triterpene, 20(S),24(R)-epoxydammarane-3α,11α,25-triol (V) and also derivatives of it - the monoacetates at C-3 (II) and C-11 (III), and the monoketone at C-3 (IV).The structures of compounds (I-V) have been established on the basis of the results of physicochemical investigations.