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【结 构 式】

【分子编号】38618

【品名】methyl 4-(3-furyl)-7-methoxy-2-naphthoate

【CA登记号】

【 分 子 式 】C17H14O4

【 分 子 量 】282.29576

【元素组成】C 72.33% H 5% O 22.67%

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:(XX)

The target compound has been obtained as follows: The condensation of 3-furoic acid (XV) with ethyl 3-iodopropionate (XVI) by means of Zn-Cu and Pd(PPh3)4 in hot benzene, followed by hydrolysis with NaOH in methanol/THF/water gives 4-(3-furyl)-4-oxobutyric acid (XVII), which is condensed with 3-methoxybenzaldehyde (XVIII) by means of NaOAc in hot Ac2O yielding the lactone (XIX). The cyclization of (XIX) by means of H2SO4 in methanol or HCl/methanol/AcOH affords 4-(3-furyl)-7-methoxynaphthalene-2-carboxylic acid methyl ester (XX), which is converted into the 7-hydroxy-4-(3-furyl)naphthalene-2-carbonitrile (XXI) by reaction with (Me)2Al-NH2 in refluxing toluene, followed by demethylation with pyridine and TFAA or HCl in dioxane. Finally, the condensation of naphthol (XXI) with benzyl alcohol derivative (XXII) by means of triphenylphosphine and diethyl azodicarboxylate (DEAD) or di-tert-butyl azodicarboxylate (DBAD) in THF affords the target product. The benzyl alcohol derivative (XXII) has been obtained as follows: The condensation of the bicyclic ketone intermediate (IV) with the 3-(tert-butyldiphenylsilyloxymethyl)phenyllithium (XXIII) gives the silylated benzyl alcohol (XXIV), which is finally deprotected with TBAF to afford the intermediate (XXII).

1 Girard, Y.; Dube, D.; Fortin, R.; Hamel, P.; Delorme, D.; Lepine, C. (Merck Frosst Canada Inc.); Heteroarylnaphthalenes as inhibitors of leukotriene biosynthesis. EP 0579304; JP 1994087847; US 5308852; WO 9400444 .
2 Belyk, K.M.; et al.; Practical synthesis of 1,6-anhydro-2,4-dideoxy-beta-D-glycero-hexapyramos-3-ulose from levoglucosan. J Org Chem 2000, 65, 8, 2588.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(IV) 38608 6,8-dioxabicyclo[3.2.1]octan-3-one C6H8O3 详情 详情
(XV) 38615 3-furoyl chloride C5H3ClO2 详情 详情
(XVI) 25530 ethyl 3-iodopropanoate C5H9IO2 详情 详情
(XVII) 38616 4-(3-furyl)-4-oxobutyric acid C8H8O4 详情 详情
(XVIII) 20589 3-methoxybenzaldehyde; m-Anisaldehyde 591-31-1 C8H8O2 详情 详情
(XIX) 38617 5-(3-furyl)-3-[(E)-(3-methoxyphenyl)methylidene]-2(3H)-furanone C16H12O4 详情 详情
(XX) 38618 methyl 4-(3-furyl)-7-methoxy-2-naphthoate C17H14O4 详情 详情
(XXI) 38619 4-(3-furyl)-7-hydroxy-2-naphthonitrile C15H9NO2 详情 详情
(XXII) 38620 (3S)-3-[3-(hydroxymethyl)phenyl]-6,8-dioxabicyclo[3.2.1]octan-3-ol C13H16O4 详情 详情
(XXIII) 38621 [3-([[tert-butyl(diphenyl)silyl]oxy]methyl)phenyl]lithium C23H25LiOSi 详情 详情
(XXIV) 38622 (3S)-3-[3-([[tert-butyl(diphenyl)silyl]oxy]methyl)phenyl]-6,8-dioxabicyclo[3.2.1]octan-3-ol C29H34O4Si 详情 详情
Extended Information