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【结 构 式】

【分子编号】34517

【品名】2-(2-benzoyl-4-methoxyphenyl)acetic acid

【CA登记号】

【 分 子 式 】C16H14O4

【 分 子 量 】270.28476

【元素组成】C 71.1% H 5.22% O 23.68%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(IV)

Addition of phenylmagnesium bromide to 6-methoxy-1-indanone (I) gave carbinol (II), which was dehydrated to phenylindene (III) upon treatment with p-toluenesulfonic acid in refluxing toluene. Oxidative cleavage of (III) with Jones reagent in the presence of OsO4 provided 2-benzoyl-4-methoxyphenylacetic acid (IV), which was further reduced to the 2-benzyl analogue (V) by hydrogenation over Pd/C. After conversion of (V) to the corresponding acid chloride (VI) using oxalyl chloride and a trace of DMF, Friedel-Crafts cyclization with AlCl3 furnished the dibenzocycloheptenone (VII). Addition of the lithium enolate of ethyl acetate to the carbonyl group of (VII) in the presence of tetramethylethylenediamine at -78 C generated the hydroxyester (VIII). Then, hydrogenolysis of the benzylic alcohol of (VIII) in the presence of Pd/C gave (IX). Subsequent cleavage of the methyl ether of (IX) by means of ethane thiol and AlCl3 provided the corresponding racemic phenol. Isolation of the required (S)-enantiomer (X) was carried out by chiral HPLC.

1 Drake, F.H. (SmithKline Beecham plc); Method for stimulating bone formation. EP 0946180; WO 9815278 .
2 Miller, W.H.; Samanen, J.M.; Heerding, D.; Bondinell, W.E. (SmithKline Beecham Corp.); Vitronectin receptor antagonists. EP 1025090; WO 9915508 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
17491 ethyl acetate 141-78-6 C4H8O2 详情 详情
17616 bromo(phenyl)magnesium; Phenyl Magnesium Bromide 100-58-3 C6H5BrMg 详情 详情
(I) 34514 6-methoxy-1-indanone 13623-25-1 C10H10O2 详情 详情
(II) 34515 6-methoxy-1-phenyl-1-indanol C16H16O2 详情 详情
(III) 34516 5-methoxy-3-phenyl-1H-indene; methyl 3-phenyl-1H-inden-5-yl ether C16H14O 详情 详情
(IV) 34517 2-(2-benzoyl-4-methoxyphenyl)acetic acid C16H14O4 详情 详情
(V) 34518 2-(2-benzyl-4-methoxyphenyl)acetic acid C16H16O3 详情 详情
(VI) 34519 2-(2-benzyl-4-methoxyphenyl)acetyl chloride C16H15ClO2 详情 详情
(VII) 34520 3-methoxy-5,11-dihydro-10H-dibenzo[a,d]cyclohepten-10-one C16H14O2 详情 详情
(VIII) 34521 ethyl 2-(10-hydroxy-3-methoxy-10,11-dihydro-5H-dibenzo[a,d]cyclohepten-10-yl)acetate C20H22O4 详情 详情
(IX) 34522 ethyl 2-(3-methoxy-10,11-dihydro-5H-dibenzo[a,d]cyclohepten-10-yl)acetate C20H22O3 详情 详情
(X) 34523 ethyl 2-[(10S)-3-hydroxy-10,11-dihydro-5H-dibenzo[a,d]cyclohepten-10-yl]acetate C19H20O3 详情 详情
Extended Information