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【结 构 式】 
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【分子编号】50259 【品名】methyl (1R,2S,3S,5S)-3-(4-iodophenyl)-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylate 【CA登记号】 |
【 分 子 式 】C16H20INO2 【 分 子 量 】385.24481 【元素组成】C 49.88% H 5.23% I 32.94% N 3.64% O 8.31% |
合成路线1
该中间体在本合成路线中的序号：(IV)Conjugate addition of 4-(trimethylsilyl)phenylmagnesium bromide (II) to anhydroecgonine methyl ester (I) afforded regioselectively the 2-beta-carbomethoxy-3-beta-aryl tropane (III). Iododesilylation of (III) using ICl or iodine in the presence of AgBF4 gave the iodophenyl derivative (IV). Hydrolysis of the ester function of (IV) in aqueous dioxan yielded the corresponding acid (V). Treatment of (V) with POCl3 provided the acid chloride (VI), which was condensed with 1,3-propanediol monomesylate (VII) to yield ester (VIII). Finally, nucleophilic displacement of the mesylate group of (VIII) with tetrabutylammonium fluoride in refluxing THF afforded the title fluoropropyl ester.
| 【1】 Gu, X.-H.; et al.; Synthesis and biological evaluation of a series of novel N- or O-fluoroalkyl derivatives of tropane: Potential positron emission tomography (PET) imaging agents for the dopamine transporter. Bioorg Med Chem Lett 2001, 11, 23, 3049. |
| 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) | 21118 | methyl (1R,5S)-8-methyl-8-azabicyclo[3.2.1]oct-2-ene-2-carboxylate | C10H15NO2 | 详情 | 详情 | |
| (II) | 50257 | bromo[4-(trimethylsilyl)phenyl]magnesium | C9H13BrMgSi | 详情 | 详情 | |
| (III) | 50258 | methyl (1R,2S,3S,5S)-8-methyl-3-[4-(trimethylsilyl)phenyl]-8-azabicyclo[3.2.1]octane-2-carboxylate | C19H29NO2Si | 详情 | 详情 | |
| (IV) | 50259 | methyl (1R,2S,3S,5S)-3-(4-iodophenyl)-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylate | C16H20INO2 | 详情 | 详情 | |
| (V) | 50260 | (1R,2S,3S,5S)-3-(4-iodophenyl)-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylic acid | C15H18INO2 | 详情 | 详情 | |
| (VI) | 50261 | (1R,2S,3S,5S)-3-(4-iodophenyl)-8-methyl-8-azabicyclo[3.2.1]octane-2-carbonyl chloride | C15H17ClINO | 详情 | 详情 | |
| (VII) | 50262 | 3-hydroxypropyl methanesulfonate | C4H10O4S | 详情 | 详情 | |
| (VIII) | 50263 | 3-[(methylsulfonyl)oxy]propyl (1R,2S,3S,5S)-3-(4-iodophenyl)-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylate | C19H26INO5S | 详情 | 详情 |
合成路线2
该中间体在本合成路线中的序号：(IV)Conjugate addition of 4-(trimethylsilyl)phenylmagnesium bromide (II) to anhydroecgonine methyl ester (I) afforded regioselectively the 2-beta-carbomethoxy-3-beta-aryl tropane (III). Iododesilylation of (III) using ICl or iodine in the presence of AgBF4 gave the iodophenyl derivative (IV). Hydrolysis of the ester function of (IV) in aqueous dioxan yielded the corresponding acid (V). Treatment of (V) with POCl3 provided the acid chloride (VI), which was finally condensed with 2-fluoroethanol (VII) to yield the title fluoroethyl ester.
| 【1】 Gu, X.-H.; et al.; Synthesis and biological evaluation of a series of novel N- or O-fluoroalkyl derivatives of tropane: Potential positron emission tomography (PET) imaging agents for the dopamine transporter. Bioorg Med Chem Lett 2001, 11, 23, 3049. |
| 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) | 21118 | methyl (1R,5S)-8-methyl-8-azabicyclo[3.2.1]oct-2-ene-2-carboxylate | C10H15NO2 | 详情 | 详情 | |
| (II) | 50257 | bromo[4-(trimethylsilyl)phenyl]magnesium | C9H13BrMgSi | 详情 | 详情 | |
| (III) | 50258 | methyl (1R,2S,3S,5S)-8-methyl-3-[4-(trimethylsilyl)phenyl]-8-azabicyclo[3.2.1]octane-2-carboxylate | C19H29NO2Si | 详情 | 详情 | |
| (IV) | 50259 | methyl (1R,2S,3S,5S)-3-(4-iodophenyl)-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylate | C16H20INO2 | 详情 | 详情 | |
| (V) | 50260 | (1R,2S,3S,5S)-3-(4-iodophenyl)-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylic acid | C15H18INO2 | 详情 | 详情 | |
| (VI) | 50261 | (1R,2S,3S,5S)-3-(4-iodophenyl)-8-methyl-8-azabicyclo[3.2.1]octane-2-carbonyl chloride | C15H17ClINO | 详情 | 详情 | |
| (VII) | 44106 | 2-fluoro-1-ethanol | 371-62-0 | C2H5FO | 详情 | 详情 |