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【结 构 式】 
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【分子编号】50267 【品名】methyl (1R,2S,3S,5S)-8-methyl-3-(4-methylphenyl)-8-azabicyclo[3.2.1]octane-2-carboxylate 【CA登记号】 |
【 分 子 式 】C17H23NO2 【 分 子 量 】273.37516 【元素组成】C 74.69% H 8.48% N 5.12% O 11.71% |
合成路线1
该中间体在本合成路线中的序号：(III)Conjugate addition of tolylmagnesium bromide (II) to ecgonidine methyl ester (I) provided the 3-beta-tolyl tropane derivative (III). N-Dealkylation of (III) to produce the nortropane analogue (V) was carried out via acylation with trichloroethyl chloroformate, followed by reductive cleavage of the resultant trichloroethyl carbamate (IV) with Zn and HOAc. Alkylation of the secondary amine (V) with propargyl bromide (VI) afforded the corresponding propargyl amine (VII). Subsequent hydrostannylation of the propargyl group furnished the desired (E)-stannylpropenyl compound (VIII) along with the corresponding (Z)-isomer. In an improved procedure, amine (V) was alkylated with (E)-3-chloro-1-(tributylstannyl)-1-propene (IX) to yield pure (VIII). Finally, the title vinyl iodide was obtained by iododestannylation of (VIII) employing iodine in cold CHCl3.
| 【1】 Emond, P.; et al.; Synthesis and ligand bindin of nortropane derivatives: N-substituted 2beta-carbomethoxy-3beta-(4'-iodophenyl)nortropane and N-(3-iodotrop-(2E)-enyl)-2beta-carbomethoxy-3beta-(3',4'-disubstituted phenyl)nortropane. New high-affinity and selective compounds. J Med Chem 1997, 40, 9, 1366. |
| 【2】 Mauclaire, L.; Edmond, P.; Guilloteau, D.; Besnard, J.-C.; Frangin, Y. (CIS Bio International); Tropane derivs. useable in particular for in vivo detection of dopamine transporters. EP 0901491; JP 2000510141; US 6180083; WO 9743285 . |
| 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) | 35657 | bromo(4-methylphenyl)magnesium | 4294-57-9 | C7H7BrMg | 详情 | 详情 |
| (III) | 50267 | methyl (1R,2S,3S,5S)-8-methyl-3-(4-methylphenyl)-8-azabicyclo[3.2.1]octane-2-carboxylate | C17H23NO2 | 详情 | 详情 | |
| (IV) | 50993 | 2-methyl 8-(2,2,2-trichloroethyl) (1R,2S,3S,5S)-3-(4-methylphenyl)-8-azabicyclo[3.2.1]octane-2,8-dicarboxylate | C19H22Cl3NO4 | 详情 | 详情 | |
| (V) | 50994 | methyl (1R,2S,3S,5S)-3-(4-methylphenyl)-8-azabicyclo[3.2.1]octane-2-carboxylate | C16H21NO2 | 详情 | 详情 | |
| (VI) | 11176 | 3-Bromopropyne; 3-Bromo-1-propyne | 106-96-7 | C3H3Br | 详情 | 详情 |
| (VII) | 50995 | tributyl[(E)-3-chloro-1-propenyl]stannane | C15H31ClSn | 详情 | 详情 | |
| (VIII) | 50996 | methyl (1R,2S,3S,5S)-3-(4-methylphenyl)-8-(2-propynyl)-8-azabicyclo[3.2.1]octane-2-carboxylate | C19H23NO2 | 详情 | 详情 | |
| (IX) | 50997 | methyl (1R,2S,3S,5S)-3-(4-methylphenyl)-8-[(E)-3-(tributylstannyl)-2-propenyl]-8-azabicyclo[3.2.1]octane-2-carboxylate | C31H51NO2Sn | 详情 | 详情 |
合成路线2
该中间体在本合成路线中的序号：(III)Conjugate addition of 4-tolylmagnesium bromide (II) to anhydroecgonine methyl ester (I) afforded regioselectively the 2-beta-carbomethoxy-3-beta-aryl tropane (III). Hydrolysis of the ester function of (III) in aqueous dioxan gave the corresponding acid (IV). Treatment of (IV) with POCl3 yielded the acid chloride (V), which was condensed with 1,3-propanediol monomesylate (VI), yielding ester (VII). Finally, nucleophilic displacement of the mesylate group of (VII) 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) | 35657 | bromo(4-methylphenyl)magnesium | 4294-57-9 | C7H7BrMg | 详情 | 详情 |
| (III) | 50267 | methyl (1R,2S,3S,5S)-8-methyl-3-(4-methylphenyl)-8-azabicyclo[3.2.1]octane-2-carboxylate | C17H23NO2 | 详情 | 详情 | |
| (IV) | 50268 | (1R,2S,3S,5S)-8-methyl-3-(4-methylphenyl)-8-azabicyclo[3.2.1]octane-2-carboxylic acid | C16H21NO2 | 详情 | 详情 | |
| (V) | 50269 | (1R,2S,3S,5S)-8-methyl-3-(4-methylphenyl)-8-azabicyclo[3.2.1]octane-2-carbonyl chloride | C16H20ClNO | 详情 | 详情 | |
| (VI) | 50262 | 3-hydroxypropyl methanesulfonate | C4H10O4S | 详情 | 详情 | |
| (VII) | 50270 | 3-[(methylsulfonyl)oxy]propyl (1R,2S,3S,5S)-8-methyl-3-(4-methylphenyl)-8-azabicyclo[3.2.1]octane-2-carboxylate | C20H29NO5S | 详情 | 详情 |