【结 构 式】 |
【分子编号】53631 【品名】(1R)-1-(1,3-benzodioxol-5-yl)-1-butanamine; (1R)-1-(1,3-benzodioxol-5-yl)butylamine 【CA登记号】n/a |
【 分 子 式 】C11H15NO2 【 分 子 量 】193.24564 【元素组成】C 68.37% H 7.82% N 7.25% O 16.56% |
合成路线1
该中间体在本合成路线中的序号:(XVII)The required (S)-alpha-propylpiperonyl alcohol (XV) was prepared by two alternative routes. Asymmetric addition of di-n-propyl zinc to piperonal (X) in the presence of titanium isopropoxide and the chiral bis-triflamide (XI) yielded the (S)-alcohol (XV) in high enantiomeric excess. Alternatively, ketone (XIII) was reduced with the oxazaborolidine-borane complex (XIV) to give (XV). Treatment of the (S)-alcohol (XV) with DPPA in the presence of DBU produced the (R)-azide (XVI). This was then reduced with LiAlH4 to yield amine (XVII) with some loss of optical purity. Optical enrichment was achieved by crystallization as the D-pyroglutamic acid salt. The (R)-amine (XVII) was converted to isocyanate (XVIII) by treatment with phosgene. Finally, coupling between isocyanate (XVIII) and azetidinone (IX) in the presence of DBU in acetonitrile led to the title compound.
【1】 Cvetovich, R.J.; et al.; An asymmetric synthesis of L-694,458, a human leukocyte elastase inhibitor, via novel enzyme resolution of beta-lactam esters. J Org Chem 1996, 61, 19, 6575. |
【2】 Amato, J.S.; Cvetovich, R.; Hartner, F.W. (Merck & Co., Inc.); Process for preparing substd. azetidinones. WO 9716448 . |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
(IX) | 53626 | (4S)-3,3-diethyl-4-{4-[(4-methyl-1-piperazinyl)carbonyl]phenoxy}-2-azetidinone | n/a | C19H27N3O3 | 详情 | 详情 |
(X) | 10127 | 1,3-Benzodioxole-5-carbaldehyde; Heliotropine | 120-57-0 | C8H6O3 | 详情 | 详情 |
(XI) | 53627 | trifluoro-N-((1R,2R)-2-{[(trifluoromethyl)sulfonyl]amino}cyclohexyl)methanesulfonamide | n/a | C8H12F6N2O4S2 | 详情 | 详情 |
(XIII) | 53629 | 1-(1,3-benzodioxol-5-yl)-1-butanone | 63740-97-6 | C11H12O3 | 详情 | 详情 |
(XIV) | 20631 | (R)-Methyl oxazaborolidine; (3aR)-1-methyl-3,3-diphenyltetrahydro-3H-pyrrolo[1,2-c][1,3,2]oxazaborole | 112022-83-0 | C18H20BNO | 详情 | 详情 |
(XV) | 53628 | (1S)-1-(1,3-benzodioxol-5-yl)-1-butanol | n/a | C11H14O3 | 详情 | 详情 |
(XVI) | 53630 | (1R)-1-(1,3-benzodioxol-5-yl)butyl azide; 5-[(1R)-1-azidobutyl]-1,3-benzodioxole | n/a | C11H13N3O2 | 详情 | 详情 |
(XVII) | 53631 | (1R)-1-(1,3-benzodioxol-5-yl)-1-butanamine; (1R)-1-(1,3-benzodioxol-5-yl)butylamine | n/a | C11H15NO2 | 详情 | 详情 |
(XVIII) | 53632 | 5-[(1R)-1-isocyanatobutyl]-1,3-benzodioxole; (1R)-1-(1,3-benzodioxol-5-yl)butyl isocyanate | n/a | C12H13NO3 | 详情 | 详情 |
合成路线2
该中间体在本合成路线中的序号:(XVII)Preparation of the intermediate chiral amine (XVII) was reported by a number of synthetic strategies. Piperonal (X) was condensed with D-phenylglycinol (XXIV) to give imine (XXV). Diastereoselective addition of allylmagnesium chloride (XXVI) to imine (XXV) afforded amine (XXVII). Simultaneous hydrogenation of the double bond and hydrogenolysis of the chiral auxiliary of (XXVII) furnished the desired amine (XVII).
【1】 Storace, L.; et al.; An efficient large-scale process for the human leukocyte elastase inhibitor, DMP 777. Org Process Res Dev 2002, 6, 1, 54. |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
(X) | 10127 | 1,3-Benzodioxole-5-carbaldehyde; Heliotropine | 120-57-0 | C8H6O3 | 详情 | 详情 |
(XVII) | 53631 | (1R)-1-(1,3-benzodioxol-5-yl)-1-butanamine; (1R)-1-(1,3-benzodioxol-5-yl)butylamine | n/a | C11H15NO2 | 详情 | 详情 |
(XXIV) | 14376 | (2R)-2-amino-2-phenyl-1-ethanol; (R)-(-)-2-phenylglycinol; (R)-2-amino-2-phenyl-1-ethanol | 56613-80-0 | C8H11NO | 详情 | 详情 |
(XXV) | 53637 | (2R)-2-{[(E)-1,3-benzodioxol-5-ylmethylidene]amino}-2-phenyl-1-ethanol | n/a | C16H15NO3 | 详情 | 详情 |
(XXVI) | 53638 | allyl(chloro)magnesium | 2622-05-1 | C3H5ClMg | 详情 | 详情 |
(XXVII) | 53639 | (2R)-2-{[(1R)-1-(1,3-benzodioxol-5-yl)-3-butenyl]amino}-2-phenyl-1-ethanol | n/a | C19H21NO3 | 详情 | 详情 |
合成路线3
该中间体在本合成路线中的序号:(XVII)Addition of n-propylmagnesium chloride to piperonylonitrile (XXXII), followed by sulfinylation of the intermediate (XXXIII) with menthyl p-toluenesulfinate (XXXIV), furnished the sulfinyl imine (XXXV). Diastereoselective reduction of imine (XXXV) with DIBAL gave the desired sulfinamide (XXXVI). Amine (XVII) was then obtained by mild acidic hydrolysis of sulfinamide (XXXVI).
【1】 Storace, L.; et al.; An efficient large-scale process for the human leukocyte elastase inhibitor, DMP 777. Org Process Res Dev 2002, 6, 1, 54. |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
(XVII) | 53631 | (1R)-1-(1,3-benzodioxol-5-yl)-1-butanamine; (1R)-1-(1,3-benzodioxol-5-yl)butylamine | n/a | C11H15NO2 | 详情 | 详情 |
(XXXII) | 53644 | n/a | C11H12ClMgNO2 | 详情 | 详情 | |
(XXXIII) | 53645 | (1S,2R,5S)-2-isopropyl-5-methylcyclohexyl 4-methylbenzenesulfinate | n/a | C17H26O2S | 详情 | 详情 |
(XXXIV) | 53646 | 1,3-benzodioxole-5-carbonitrile | 4421-09-4 | C8H5NO2 | 详情 | 详情 |
(XXXV) | 53647 | N-[(E)-1-(1,3-benzodioxol-5-yl)butylidene]-4-methylbenzenesulfinamide | n/a | C18H19NO3S | 详情 | 详情 |
(XXXVI) | 53648 | N-[(1R)-1-(1,3-benzodioxol-5-yl)butyl]-4-methylbenzenesulfinamide | n/a | C18H21NO3S | 详情 | 详情 |
合成路线4
该中间体在本合成路线中的序号:(XVII)The preferred synthetic route began with the Friedel-Crafts acylation of benzodioxol (XXXVII) by means of butyric anhydride and BF3. The resultant butyrophenone (XIII) was then condensed with (R)-1-phenylethylamine (XXXVII), using TiCl4 as the dehydrating reagent, to afford the E-imine (XXXIX) as the major isomer. Catalytic hydrogenation of imine (XXXIX) in the presence of Raney-Ni furnished the desired amine (XL). The chiral auxiliary was then removed by hydrogenolysis over Pd/C to yield amine (XVII).
【1】 Storace, L.; et al.; An efficient large-scale process for the human leukocyte elastase inhibitor, DMP 777. Org Process Res Dev 2002, 6, 1, 54. |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
(XIII) | 53629 | 1-(1,3-benzodioxol-5-yl)-1-butanone | 63740-97-6 | C11H12O3 | 详情 | 详情 |
(XVII) | 53631 | (1R)-1-(1,3-benzodioxol-5-yl)-1-butanamine; (1R)-1-(1,3-benzodioxol-5-yl)butylamine | n/a | C11H15NO2 | 详情 | 详情 |
(XXVIII) | 10039 | (1R)-1-Phenylethylamine; (1R)-1-Phenyl-1-ethanamine.; L-alpha-Phenylethylamine | 3886-69-9 | C8H11N | 详情 | 详情 |
(XXXVII) | 50641 | 1,3-Dioxaindane; 1,3-Benzodioxole; methylenedioxybenzene; 1,2-methylenedioxybenzene; catechol methylene ether | 274-09-9 | C7H6O2 | 详情 | 详情 |
(XXXIX) | 53649 | (1R)-N-[(E)-1-(1,3-benzodioxol-5-yl)butylidene]-1-phenyl-1-ethanamine; N-[(E)-1-(1,3-benzodioxol-5-yl)butylidene]-N-[(1R)-1-phenylethyl]amine | n/a | C19H21NO2 | 详情 | 详情 |
(XL) | 53650 | N-[(1R)-1-(1,3-benzodioxol-5-yl)butyl]-N-[(1R)-1-phenylethyl]amine; (1R)-1-(1,3-benzodioxol-5-yl)-N-[(1R)-1-phenylethyl]-1-butanamine | n/a | C19H23NO2 | 详情 | 详情 |