Compounds and methods for modulation of estrogen receptors
A compound and composition technology, applied in the field of compounds that selectively modulate estrogen beta-receptor activity, can solve problems such as side effects
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Embodiment 1
[0154] 2-(4-Hydroxybenzylacetone)-5-methoxyphenol
[0155]
[0156] To 3-methoxyphenol (50g, 0.40mol), 4-hydroxyphenylacetic acid (71g, 0.46mol) and ZnCl 2 (174g, 1.28mol) was added POCl 3 (100ml, 1.6mol). The mixture was stirred at 65°C for 2 hours, poured into ice water (2 L) and stirred until the ice melted. The clear supernatant was decanted and the residue was rinsed with water (1 L) and partitioned between EtOAC and water. The organic layer was washed with brine, dried (MgSO 4 ), filtered and concentrated. The resulting oil provided chromatography (SiO 2 , 20% EtOAc / n-Hexane) to give 2-(4-hydroxyphenylacetone)-5-methoxyphenol (34.1 g, 33% yield) as a slightly white solid; mp 137-140°C.
Embodiment 2
[0158] 2-(4-Triisopropylsilyloxyphenylacetyl)-5-methoxyphenol
[0159]
[0160] To 2-(4-hydroxyphenylacetyl)-5-methoxyphenol (10g, 0.038mole), NEt 3 (6ml, 0.042mole) in CH 2 Cl 2 To the mixture in (50ml) was added triisopropylsilyl chloride (9ml, 0.042mole). The mixture was stirred for 22 h, concentrated and the residue was dissolved in EtOAc and H 2 O distribution. The organic layer was washed with NaOH (1N), HCl (1N) and brine. Dry the organic layer (MgSO 4 ), filtered and concentrated. The residue was treated with n-hexane to give 2-(4-triisopropylsilylbenzylacetone)-5-methoxyphenol (6.2 g, 38% yield) as a slightly white solid; mp 66-68°C.
Embodiment 3
[0162] 3-Phenyl-4-(4-hydroxybenzyl)-7-methoxycoumarin
[0163]
[0164] To 2-(4-triisopropylsilylbenzylacetone)-5-methoxyphenol (4g, 9.6mmole), K 2 CO3 (4g, 29mmoles) in CH 3 To the mixture in CN (50ml) was added phenylacetyl chloride (2.3ml, 14mmole). The mixture was stirred at reflux for 22 h, poured into H 2 O (0 °C) (500ml) and extracted with EtOAc (2x). Dry the organic layer (MgSO 4 ), filtered and concentrated. Residue and Et 2 O was stirred and the resulting solid was filtered and recrystallized (EtOH) to give 3-phenyl-4-(4-hydroxybenzyl)-7-methoxycoumarin (0.88 g, 15% yield) as White solid; mp235-236°C.
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