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【结 构 式】 
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【分子编号】56719 【品名】2-({(1R)-1-[2-(2,4-difluorophenyl)-2-oxiranyl]ethyl}oxy)tetrahydro-2H-pyran; (1R)-1-[2-(2,4-difluorophenyl)-2-oxiranyl]ethyl tetrahydro-2H-pyran-2-yl ether 【CA登记号】 |
【 分 子 式 】C15H18F2O3 【 分 子 量 】284.3029264 【元素组成】C 63.37% H 6.38% F 13.36% O 16.88% |
合成路线1
该中间体在本合成路线中的序号：(VIII)The condensation of (R)-lactic acid (I) with morpholine (II) gives the corresponding morpholide (III), which is protected at the hydroxyl position with dihydropyran (IV) to yield the tetrahydropyranyl ether (V). The Grignard reaction of (V) with 2,4-difluorophenylmagnesium bromide (VI) affords the chiral 1-propanone (VII), which by a Corey's diastereoselective epoxidation with trimethylsulfoxonium iodide is converted into the oxirane (VIII). The opening of the oxirane ring of (VIII) by means of 1,2,4-triazole (IX) and NaH provides the tertiary alcohol (X), which is treated with pyridine p-toluenesulfonate to give the deprotected diol (XI) as a (2R,3R) and (2R,3S) 4:1 diastereomeric mixture, from which the desired (2R,3R)-isomer (XII) was isolated by crystallization. The reaction of (XII) with Ms-Cl and TEA, followed by cyclization with NaOMe, yields the oxirane (XIII), which is finally condensed with 7-chloroquinazolin-4(3H)-one (XIV) by means of K2CO3 in hot NMP.
| 【1】 Tasaka, A.; Tamura, N.; Matsushita, Y.; Teranishi, K.; Hayashi, R.; Okonogi, K.; Itoh, K.; Optically active antifungal azoles. I. Synthesis and antifungal activity of (2R,3R)-2-(2,4-difluorophenyl)-3-mercapto-1-(1H-1,2,4-triazol-1-yl)-2-butanol and stereoisomers. Chem Pharm Bull 1993, 41, 6, 1035-42. |
| 【2】 Bartroli Orpi, J.; Anguita Lopez, M. (J. Uriach & Cia., SA); Method for preparing pyrimidone derivs. with antifungal activity. ES 2159488; WO 0166519 . |
| 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) | 11591 | methyl (2R)-2-hydroxypropanoate | 17392-83-5 | C4H8O3 | 详情 | 详情 |
| (II) | 10388 | Morpholine | 110-91-8 | C4H9NO | 详情 | 详情 |
| (III) | 56718 | (2R)-2-hydroxy-1-(4-morpholinyl)-1-propanone | C7H13NO3 | 详情 | 详情 | |
| (IV) | 13684 | 3,4-Dihydro-2H-pyran;2,3-Dihydro-4H-pyran; 5,6-Dihydro-4H-pyran;Dihydropyran | 110-87-2 | C5H8O | 详情 | 详情 |
| (V) | 45574 | (2R)-1-(4-morpholinyl)-2-(tetrahydro-2H-pyran-2-yloxy)-1-propanone | C12H21NO4 | 详情 | 详情 | |
| (VI) | 20262 | bromo(2,4-difluorophenyl)magnesium | C6H3BrF2Mg | 详情 | 详情 | |
| (VII) | 56717 | (2S)-1-(2,4-difluorophenyl)-2-methyl-3-tetrahydro-2H-pyran-2-yl-1-propanone | C15H18F2O2 | 详情 | 详情 | |
| (VIII) | 56719 | 2-({(1R)-1-[2-(2,4-difluorophenyl)-2-oxiranyl]ethyl}oxy)tetrahydro-2H-pyran; (1R)-1-[2-(2,4-difluorophenyl)-2-oxiranyl]ethyl tetrahydro-2H-pyran-2-yl ether | C15H18F2O3 | 详情 | 详情 | |
| (IX) | 13135 | 1H-1,2,4-Triazole; 1,2,4-Triazole | 288-88-0 | C2H3N3 | 详情 | 详情 |
| (X) | 56720 | (3R)-2-(2,4-difluorophenyl)-3-(tetrahydro-2H-pyran-2-yloxy)-1-(1H-1,2,4-triazol-1-yl)-2-butanol | C17H21F2N3O3 | 详情 | 详情 | |
| (XI) | 56721 | (3R)-2-(2,4-difluorophenyl)-1-(1H-1,2,4-triazol-1-yl)-2,3-butanediol | C12H13F2N3O2 | 详情 | 详情 | |
| (XII) | 13106 | (2R,3R)-2-(2,4-Difluorophenyl)-1-(1H-1,2,4-triazol-1-yl)-2,3-butanediol | C12H13F2N3O2 | 详情 | 详情 | |
| (XIII) | 31738 | 1-[[(2R,3S)-2-(2,4-difluorophenyl)-3-methyloxiranyl]methyl]-1H-1,2,4-triazole | C12H11F2N3O | 详情 | 详情 | |
| (XIV) | 50077 | 7-chloro-4(3H)-quinazolinone | C8H5ClN2O | 详情 | 详情 |