Flavonoids of Juniperus zeravschanicaChemistry of Natural Compounds - - 2001
M. P. Yuldashev, L. Kh. Rasulova
Isoquercitrin and the new flavonglycoside zeravschanoside, 5,6,8,3',4'-pentahydroxy-7-O-β-D-glucopyranosylflavone, the structure of which was established from chemical transformations and spectral data, were isolated fromJuniperuszeravschanica Kom
A New Ketone Derivative from Victoria amazonicaChemistry of Natural Compounds - Tập 58 Số 3 - Trang 385-386 - 2022
Chen, C. Y., Kao, C. L., Yeh, H. C., Li, H. T., Wu, M. D., Cheng, M. J., Li, W. J.
A new ketone, vicamazone (4-(2-butoxyethoxy)-4-methylpentan-2-one) (1), was isolated from the leaves of Victoria amazonica (Nymphaeaceae). The structure of the new 4-methylpentan-2-one derivative was elucidated by chemical and physical evidences.
Synthesis of isoagathane aldehydes representing metabolites of the spongeSpongia officinalisChemistry of Natural Compounds - Tập 21 - Trang 42-47 - 1985
N. D. Ungur, P. F. Vlad
The synthesis has been performed of (14R)-15-acetoxyisoagath-12-en-16-al and of (14R)- and (14S)-isoagath-12-ene-15,16-dials, which are metabolites of the marine spongeSpongia officinalis, and alos of a number of substances related to them starting from (14R)- and (14S)-isoagath-12-en-15-ols.
The separation of the alkaloids of Anabasis aphyllaChemistry of Natural Compounds - Tập 10 - Trang 474-476 - 1974
V. P. Zakharov, Kh. A. Aslanov, A. I. Ishbaev, A. S. Sadykov, B. A. Yankovskii
1. The optimum conditions for the extraction of the high-boiling alkaloids from technical anabasine sulfate by dilution with water and at various pH values of the medium have been established. 2. A method for removing anabasine and lupinine from a mixture of the high-boiling alkaloids ofAnabasis aphylla has been developed which is based on the formation of the carbonates of the strong bases.
Natural Pseudoguaianolides Prepared from DamsinChemistry of Natural Compounds - Tập 51 - Trang 675-680 - 2015
R. Villagomez, M. Quiroz, A. Tito, O. Sterner, G. R. Almanza
Damsin (1) is a pseudoguaianolide sesquiterpene possessing potent biological activities, reported as a metabolite of several medicinal plants belonging to the genus Ambrosia together with related compounds. Starting from 1, which can be isolated in good amounts from Ambrosia arborescens, the five natural pseudoguaianolides ambrosin (2), isodamsin (3), 3α-hydroxydamsin (4), 3α-acetoxydamsin (5), an...... hiện toàn bộ