【结 构 式】 |
【分子编号】57226 【品名】bromo[3-(methoxymethyl)phenyl]magnesium 【CA登记号】 |
【 分 子 式 】C8H9BrMgO 【 分 子 量 】225.36786 【元素组成】C 42.64% H 4.03% Br 35.45% Mg 10.78% O 7.1% |
合成路线1
该中间体在本合成路线中的序号:(III)Treatment of 3-bromobenzyl bromide (I) with sodium methoxide gives 1-bromo-3-(methoxymethyl)benzene (II). After conversion of aryl bromide (II) into the corresponding Grignard reagent (III), addition to epoxide (IV) in the presence of CuI affords the chiral alcohol (V). Removal of the O-trityl protecting group of (V) under acidic conditions provides diol (VI), which is selectively acylated at the primary hydroxyl group by means of acetyl chloride and 2,4,6-collidine to produce the mono-acetate (VII). After protection of the secondary hydroxyl group of (VII) as the tetrahydropyranyl ether (VIII), alkaline hydrolysis of the acetate ester group leads to the primary alcohol (IX). Subsequent Swern oxidation of alcohol (IX) provides aldehyde (X). Condensation of aldehyde (X) with tetrabromomethane in the presence of triphenylphosphine furnishes the gem-dibromoolefin (XI). This is then converted to the terminal alkyne (XII) by treatment with butyllithium in cold THF.
【2】 Ohuchida, S.; Maruyama, T. (Ono Pharmaceutical Co., Ltd.); 5-Thia-omega-substd. phenyl-prostaglandin E derivs., process for producing the same and drugs containing the same as the active ingredient. EP 1097922; JP 2001089444; US 6462081; WO 0003980 . |
【1】 Maruyama, T.; et al.; Design and synthesis of a selective EP4-receptor agonist. Part 3: 16-Phenyl-5-thiaPGE1 and 9-beta-halo derivatives with improved stability. Bioorg Med Chem 2002, 10, 6, 1743. |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
(I) | 20466 | 1-bromo-3-(bromomethyl)benzene | 823-78-9 | C7H6Br2 | 详情 | 详情 |
(II) | 56397 | 3-bromobenzyl methyl ether; 1-bromo-3-(methoxymethyl)benzene | C8H9BrO | 详情 | 详情 | |
(III) | 57226 | bromo[3-(methoxymethyl)phenyl]magnesium | C8H9BrMgO | 详情 | 详情 | |
(IV) | 41006 | (2S)-oxiranylmethyl trityl ether; (2S)-2-[(trityloxy)methyl]oxirane | C22H20O2 | 详情 | 详情 | |
(V) | 56398 | (2S)-1-[3-(methoxymethyl)phenyl]-3-(trityloxy)-2-propanol | C30H30O3 | 详情 | 详情 | |
(VI) | 56399 | (2S)-3-[3-(methoxymethyl)phenyl]-1,2-propanediol | C11H16O3 | 详情 | 详情 | |
(VII) | 56400 | (2S)-2-hydroxy-3-[3-(methoxymethyl)phenyl]propyl acetate | C13H18O4 | 详情 | 详情 | |
(VIII) | 56401 | (2S)-3-[3-(methoxymethyl)phenyl]-2-(tetrahydro-2H-pyran-2-yloxy)propyl acetate | C18H26O5 | 详情 | 详情 | |
(IX) | 56402 | (2S)-3-[3-(methoxymethyl)phenyl]-2-(tetrahydro-2H-pyran-2-yloxy)-1-propanol | C16H24O4 | 详情 | 详情 | |
(X) | 56403 | (2S)-3-[3-(methoxymethyl)phenyl]-2-(tetrahydro-2H-pyran-2-yloxy)propanal | C16H22O4 | 详情 | 详情 | |
(XI) | 56404 | (1S)-3,3-dibromo-1-[3-(methoxymethyl)benzyl]-2-propenyl tetrahydro-2H-pyran-2-yl ether; 2-({(1S)-3,3-dibromo-1-[3-(methoxymethyl)benzyl]-2-propenyl}oxy)tetrahydro-2H-pyran | C17H22Br2O3 | 详情 | 详情 | |
(XII) | 56405 | (1S)-1-[3-(methoxymethyl)benzyl]-2-propynyl tetrahydro-2H-pyran-2-yl ether; 2-({(1S)-1-[3-(methoxymethyl)benzyl]-2-propynyl}oxy)tetrahydro-2H-pyran | C17H22O3 | 详情 | 详情 |