4-methoxyphenyl trihydroxy

Chemicel Neme 2-[2,3-Dihydro-3-(4-hydroxy-3-methoxyphenyll-2-(hydroxymethyll-1,4-benzodioxin-6-yl] -2,3-dihydro-3,5,7-trihydroxy-4H-1 -benzopyran-4-one... 

Centaureilt. 7-ifi-D GluCOpymnosytoxy)-5-hydr-t>xy-2A3-hydroxy-4-methoxyphenyl)-3.6-dimeihoxy-4H-l-benzvpyran-4-one 3, 5,7 -trihydroxy -3,4, 6-trimethoxyfla-vooe 7-fl-D-glucoside. CmHmO,j mol wi 522.47. C 5517%, H 5.02%. O 39.81%. Isoln from root ot Centaurea pcea L, Compositae Bridel, Charaux, Compt Rend 175, 833. 1168 (1922). Structure Farkas et al, Ber. 97, 1666 (1964). 

Cyclohexanecarboxylic acid, 1,3,4-trihydroxy-5-[[3-(4-hydroxy-3-methoxyphenyl)-1-oxo-2-propenyijoxy]-, (1a,3a,4a,5p)- 3-0-feruloyiquinic acid 3797, 3973, 3974a, 4402 ... 

Two novel compounds of tenuifodione (24) and tenuifone (25) (Figure 7) were isolated together with twelve known compounds such as izalpinin (3,5-dihydroxy-7-methoxyflavone, 26), alpinone (27), arborinone (28), irilin B (5,7,2 -trihydroxy-6-methoxyisoflavone, 29), irisone A [7-(2-methoxyphenyl)-9-hydroxy-877-l,3-dioxolo[4,5-g][l]benzopyran-8-one, 30], irisone B [7-(2-hydroxyphenyl) -9-hydroxy- %H-1,3 -dioxolo [4,5 -g] [ 1 ]benzopyran-8-one, 31]... 

Me ether [500-65-2]. l- 3,5-Dihydroxyphenyl)-2- 3-hydroxy-4-methoxyphenyl)ethylene. 3,3, 5-Trihydroxy-4 -methoxystilbene. Rhapontigenin, Pontigenin C15H14O4 M 258.273... 

Me ether [34000-39-0]. l-(2,4-Dihydroxyphenyl)-3-(4-hydroxy-3-methoxyphenyl)-2-propen-l-one, 9CL 2, 4,4 -Trihydroxy-3-methoxychalcone. Homobutein C16H14O5 M 286.284... 

Cyclisation of some unsymmetrically substituted 2,6-dihydroxyphenyl ketones with ethyl oxalyl chloride gives isomeric chromones, as, for example, compounds (19) and (20) from the ketone (18). The product whidi was originally believed [91] to be the 6-methyl isomer (20) was later shown [92, 93] to be a mixture of chromones (19) and (20). Some unsymmetrical ketones behave similarly [74,94] but others react to give one isomer only for example, 2,4,6-trihydroxy-3-methoxyphenyl 4-hydroxybenzyl ketone (21) cyclises with ethyl oxalyl chloride to give the 8-methoxychromone (22) [65] whose structure has bwn confirmed [95] by an independent synthesis. 

Hydroxy-4-(2-hydroxyethoxy)phenyl]phenylmethanone, 102 [2-Hydroxy-3-(hydroxymethyl)-4-methoxyphenyl]phenylmethanone, 103 [2-Hydroxy-5-(hydroxymethyl)-4-methoxyphenyl]phenylmethanone, 103 (2-Hydroxy-4-methoxyphenyl)(2-hydroxy-4-methylphenyl)methanone, 455 (2-Hydroxy-3-methoxyphenyl)(4-methoxyphenyl)methanone, 286 (2-Hydroxy-4-methoxyphenyl)(2-methoxyphenyl)methanone, 286 (2-Hydroxy-4-methoxyphenyl)(3-methoxyphenyl)methanone, 286 (2-Hydroxy-4-methoxyphenyl)(4-methoxyphenyl)methanone, 287 (2-Hydroxy-5-methoxyphenyl)(2-methoxyphenyl)methanone, 288 (2-Hydroxy-5-methoxyphenyl)(3-methoxyphenyl)methanone, 288 (2-Hydroxy-5-methoxyphenyl)(4-methoxyphenyl)methanone, 288 (2-Hydroxy-6-methoxyphenyl)(2-methoxyphenyl)methanone, 289 (5-Hydroxy-2-methoxyphenyl)(4-methoxyphenyl)methanone, 289 (2-Hydroxyphenyl)[2-(methoxymethoxy)phenyl]methanone, 180 (2-Hydroxyphenyl)[4-(methoxymethoxy)phenyl]methanone, 180 Phenyl(2,4,6-trihydroxy-3,5-dimethylphenyl)methanone, 465... 

Dimethoxyphenyl)(2-methoxyphenyl)methanone, 570 (2,4-Dimethoxyphenyl)(3-methoxyphenyl)methanone, 570 (2,4-Dimethoxyphenyl)(4-methoxyphenyl)methanone, 570 (2,5-Dimethoxyphenyl)(2-methoxyphenyl)methanone, 571 (2,5-Dimethoxyphenyl)(3-methoxyphenyl)methanone, 652 (2,5-Dimethoxyphenyl)(4-methoxyphenyl)methanone, 571 (3,4-Dimethoxyphenyl)(2-methoxyphenyl)methanone, 652 (3,4-Dimethoxyphenyl)(3 -methoxyphenyl)methanone, 640 (3,4-Dimethoxyphenyl)(4-methoxyphenyl)methanone, 572 (2-Hydroxy-6-methoxy-4-methylphenyl)(4-methoxyphenyl)methanone, 622 Phenyl[2,3,4-trihydroxy-5-(l-methylethyl)phenyl]methanone, 637 Phenyl(2,4,6-trimethoxyphenyl)methanone, 569... 

Diethoxy-2-hydroxy-3-methylphenyl)ethanone, 960 l-(3,5-Diethyl-2,6-dihydroxy-4-methoxyphenyl)ethanone, 960 l-(3,4-Dimethoxy-6-hydroxy-2-propylphenyl)ethanone, 960 l-[2-Hydroxy-3-methoxy-4-(l-methylpropoxy)phenyl]ethanone, 960 l-[2-Hydroxy-4-(methoxymethoxy)-3-propylphenyl]ethanone, 961 l-[2,4,6-Trihydroxy-3-(3-methylbutyl)phenyl]ethanone, 961... 

Methoxy-l-(6-methoxy-2,4,5-trihydroxyphenyl)ethanone, 1328 2-Methoxy-l-(2,4,6-trihydroxy-3-methoxyphenyl)ethanone, 1328... 

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