4H-CHROMEN-4-ONE
IN VITRO ANTIDIABETIC ACTIVITY OF 2 (3,4 DIHYDROXYPHENYL) 3,5,7 TRIHYDROXY 4H CHROMEN 4 ONE ISOLATED FROM THE METHANOLIC EXTRACT OF ANDROGRAPHIS ECHIOIDES LEAVES
... Chemicals and Reagents: Alpha (α)-Glucosidase, porcine pancreas alpha (α)-amylase, p-nitrophenyl- α-D-glucopyranose (p-NPG), 3,5-dinitrosalicylic acid (DNS) and acarbose were purchased from Sigma Chemical Co. (St. Louis, ...
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ANTIMICROBIAL ACTIVITIES; IONIC LIQUID AND MICROWAVEASSISTED SYNTHESIS OF RING SUBSTITUTED 3 (3 BROMO 4 OXO 4H CHROMEN 2 YL) 4H CHROMEN 4 ONE
... chloro-2-hydroxyphenyl)-3-oxoprop-1-enyl)-6-methyl-4H-chromen-4- one via the condensation of acetophenones with 6-sub-4-oxo-4H- chromene-3-carbaldehyde in the presence of ...
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Crystal structure of 2 (4 tert butylphenyl) 3 hydroxy 4H chromen 4 one
... The flavonol 3-hydroxy-2-phenyl-4H-chromen-4-one (com- mon name: 3-hydroxyflavone) and its derivatives are present in a wide variety of plants as phytochemical compounds (Havsteen, 1983; ...
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Structure of 7 hydroxy 3 (2 methoxyphenyl) 2 trifluoromethyl 4H chromen 4 one
... A search made in the Cambridge Structural Database, (Groom et al., 2016), revealed the existence of seven poly- morphic and pseudopolymorphic crystal structures of 7-hy- ...
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SYNTHESIS AND ANTI DIABETIC ACTIVITY OF SOME NEW 2-(SUBSTITUTED PHENYL)-4H-CHROMEN-4-ONE DERIVATIVES
... In view of these observations and our interest in the synthesis of biologically active bi heterocycle possessing Chromone nucleus, we have modified 5-amino-6- hydroxy-2-phenyl-4H-Chromen-4-one ...
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2 (4 Hydroxyphenyl) 3 methoxy 4H chromen 4 one
... the 4H-chromen-4-one moiety are similar to those of other compounds of this group (Wera et ...the 4H-chromen-4-one and benzene ring systems are oriented at a ...
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2 Phenyl 5,7 bis(prop 2 en 1 yloxy) 4H chromen 4 one
... 1988). 4H-chromenes are important synthons for some natural products (Liu et ...on 4H-chromene derivatives, the single-crystal X-ray diffraction study on the title compound was carried ...
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5,7 Dihydroxy 8 methoxy 2 phenyl 4H chromen 4 one monohydrate
... O1 0.0503 (12) 0.0458 (11) 0.0325 (9) 0.0020 (11) −0.0042 (10) −0.0013 (8) O2 0.0729 (17) 0.0454 (12) 0.0500 (12) 0.0076 (13) −0.0032 (13) −0.0104 (9) O3 0.0764 (18) 0.0509 (13) 0.0515 (13) 0.0176 (14) −0.0060 (14) ...
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Crystal structure of 2 (3,4 dimethoxyphenyl) 3 hydroxy 4H chromen 4 one
... Flavonoids are one of secondary metabolites in plants with C6—C3—C6 skeleton, which include flavones, flavonols, chalcones and isoflavones. Variety of flanonols have been isolated from natural sources and ...
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3 (4 Nitrobenzyl) 4H chromen 4 one
... Homoisoflavonoids are a group of naturally occurring oxygen heterocyclic compounds, related to the flavonoids, which consists of a chromone skeleton with a benzyl or benzylidene group at C-3. In the ...
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rac 7 Methyl 3 [(7 methyl 4 oxochroman 3 yl)methyl] 4H chromen 4 one
... The chromanone moiety forms an important component in pharmacophores in a number of biologically active molecules of synthetic as well as natural origin. Bis-chromanones bridged by a methylene group at C3 of the ring are ...
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5,7 Dihydroxy 2 (3 hydroxy 4,5 dimethoxyphenyl) 6 methoxy 4H chromen 4 one
... Data collection: CrysAlis PRO Oxford Diffraction, 2009; cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; programs used to solve structure: SHELXS97 Sheldrick, 2008; programs [r] ...
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3 (3 Nitrobenzyl) 4H chromen 4 one
... O1 0.0335 (4) 0.0285 (4) 0.0271 (4) 0.0059 (3) 0.0036 (3) −0.0029 (3) O2 0.0348 (5) 0.0295 (5) 0.0280 (5) 0.0034 (4) 0.0080 (3) −0.0026 (4) O3 0.0700 (8) 0.0657 (8) 0.0335 (6) −0.0301 ...
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5,7 Dimethoxy 2 phenyl 4H chromen 4 one
... 1988). 4H-chromenes are important synthons for some natural products (Liu et ...on 4H- chromene derivatives and compounds containing the benzopyran fragment, the single-crystal X-ray diffraction study on ...
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Crystal structure of 3 acetyl 4H chromen 4 one
... O1 0.0172 (5) 0.0250 (6) 0.0351 (6) −0.0015 (4) 0.0041 (5) 0.0048 (5) O2 0.0169 (6) 0.0302 (6) 0.0419 (7) −0.0011 (5) 0.0043 (5) 0.0109 (5) O3 0.0269 (6) 0.0319 (7) 0.0468 (8) 0.0004 (5) 0.0032 (6) 0.0164 (6) C1 ...
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5 Hydroxy 7 methoxy 2,6,8 trimethyl 4H chromen 4 one
... residue (77.39 g). This was subjected to silica-gel column chroma- tography using gradient elution of hexane/ethyl acetate. The eluates were collected and combined based on thin-layer chromatography to give 13 fractions ...
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8 Hydroxy 5,6,7 trimethoxy 2 phenyl 4H chromen 4 one
... essentially planar, with the O atoms of the substituent groups lying close to its mean plane. The molecular conformation is governed by intramolecular interactions. The crystal packing is mainly determined by one ...
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2 (Dibromomethyl) 4H chromen 4 one
... stacking is observed, with the distance between the benzene ring centroids, Cg1 Cg1b, being 3.672 (3) A ˚ (see Fig. 2 for details). These interactions are very similar to those observed in our previous report on the ...
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ANTIOXIDANT STUDY OF ISOLATED CHEMICAL CONSTITUENTS FROM METHANOL EXTRACT OF THE CLERODENDRUM PHLOMIDIS LEAF
... (3,6,7-trihydroxy-2-(3-methoxyphenyl)-4H- chromen-4-one) and compound 9 (Isopropyl linoleate) showed good antioxidant activity with an IC 50 value of ...
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7,7 Dimethyl 2 methylamino 4 (4 methylphenyl) 3 nitro 7,8 dihydro 4H chromen 5(6H) one
... C1 0.0473 (7) 0.0549 (8) 0.0458 (8) 0.0037 (6) 0.0177 (6) 0.0092 (6) C2 0.0579 (8) 0.0548 (8) 0.0333 (7) 0.0044 (7) 0.0147 (6) −0.0007 (6) C3 0.0481 (7) 0.0391 (7) 0.0363 (6) −0.0009 (6) 0.0092 (5) −0.0022 (5) C4 0.0342 ...
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