نتایج جستجو برای: 4 dien 3 one
تعداد نتایج: 3978912 فیلتر نتایج به سال:
In the title compound, [Cd(dien)(2)]I(2), where dien = diethyl-enetriamine (C(4)H(13)N(3)), the Cd(II) ion is in a distorted octa-hedral coordination environment. In the crystal structure, inter-molecular N-H⋯I hydrogen bonds link cations and anions into a three-dimensional network.
Phosphorylated α-hydroxyallenes 1 and 2 were smoothly converted into the corresponding 2,5-dihydrofurans 3 and 4 in an 5-endo-trig cycloisomerization reaction by using 5 mol % of coinage metal salts as catalyst. Experimental conditions such as the type of the solvent, the reaction temperature, the mol % and the type of the catalyst were optimized. This mild and efficient cyclization method can ...
Aminomethyl derivatives of 1,5-bis(4-hydroxy-3-methoxyphenyl)penta-1,4-dien-3-one, designed as new cytotoxins, were synthesized and evaluated in terms of their cytotoxic activities. The compounds have low CC50 values in the low micromolar range against HL-60 neoplasms and HSC-2, HSC-3 and HSC-4 carcinoma cells. In general, the average CC50 values of these compounds were higher towards HGF, HPC ...
Outcome: Phytochemical investigation of Cyperus rotundus tubers resulted in isolation of four phytoconstituents characterized as n-tritriacontan-16-one (1), Lup-12, 20 (29)-dien-3β-ol-3-α-L-arabinofuranosyl-2'-octadec-9"-eonate (2), npentadecanyl-9-octadecenoate (3) and n-tetradecanyl-n-octadec-9, 12-dienoate (4). Only compound 2 showed antimicrobial activity. Lup-12, 20 (29)-dien-3β-ol3-α-L-ar...
Four new lanostanoids, ethyl lucidenate A (1), ethyl lucidenate F (2), 15-O-acetylganolucidate A (3), and 3,11,15,23-tetraoxo-27ξ-lanosta-8,16-dien-26-oic acid (4), and two new lactone derivatives, 5-hydroxy-5-(methoxymethyl)-4-methylfuran-2(5H)-one (5) and 3-(4-methoxy-2-oxo-2H-pyran-6-yl)propanoic acid (6), together with four known compounds, 11α-hydroxy-3,7-dioxolanost-8,24(E)-dien-26- oic a...
Aralia chinensis var. dasyphylloides is widely distributed in China and used as a traditional herbal medicine for the treatment of digestive and immune system diseases. The present study aimed to search for novel oleanolic-type triterpenoids in low-polarity fractions. Six new triterpene derivatives (1-6), together with two known compounds were isolated from the barks of A. chinensis var. dasyph...
The title compound, [Cu(C(16)H(32)N(4))](C(14)H(14)O(2)PS(2))(2) or [Cu(trans[14]dien)][S(2)P(OC(6)H(4)Me-4)(2)](2), where trans[14]dien is meso-5,7,7,12,14,14-hexa-methyl-1,4,8,11-tetra-azacyclo-tetra-deca-4,11-diene, was obtained by the reaction of [Cu(trans[14]dien)](ClO(4))(2) and [(C(2)H(5))(2)NH](2) [S(2)P(OC(6)H(4)Me-4)(2)](2). The Cu(II) atom lies on a centre of inversion and possesses ...
The fact that cholesta-3:5-dien-7-one occurs in arteriosclerotic aorta and some other tissues, in small amounts (Hardegger, Ruzicka & Tagmann, 1943; Prelog, Ruzicka & Stein, 1943), and that it is not necessarily an artifact (Kantiengar & Morton, 1955a) makes it desirable to study the effect of administering it to animals. In the present work it has been given to rats orally at the rate of 25 mg...
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