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【结 构 式】 
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【分子编号】43508 【品名】propyl (2S)-2-hydroxypropanoate 【CA登记号】616-09-1 |
【 分 子 式 】C6H12O3 【 分 子 量 】132.15948 【元素组成】C 54.53% H 9.15% O 36.32% |
合成路线1
该中间体在本合成路线中的序号：(XIV)Alternatively, intermediate (XIII) can be obtained as follows: Heating of ethyl (S)-lactate (XIV) with morpholine affords amide (XVI), which then reacts with 3,4-dihydro-2H-pyran (A) in the presence of p-TsOH to give protected derivative (XVII). Grignard reaction between (XVII), bromo derivative (XVIII) and Mg turnings in THF yields protected ketone (XIX), which is treated with pyridinium p-toluenesulfonate (PPTS) (THP group removal) and reprotected by means of Tf2O and DIEA to give triflate derivative (XX). Conversion of (XX) into intermediate (XIII) is achieved by reaction with triazolone (VII) and NaH in THF.
| 【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】 Kitazaki, T.; et al.; Optically active antifungal azoles. IX. An alternative synthetic route for 2-[(1R,2R)-2-(2,4-difluorophenyl)-2-hydroxy-1-methyl-3-(1H-1,2,4-triazol-1-yl)propyl]-4-[4-(2,2,3,3-tetrafluoropropoxy)phenyl]-3(2H,4H)-1,2,4-triazolone and its analogs. Chem Pharm Bull 1999, 47, 3, 360. |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (A) | 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 |
| (VII) | 43502 | 4-[4-(2,2,3,3-tetrafluoropropoxy)phenyl]-2,4-dihydro-3H-1,2,4-triazol-3-one | C11H9F4N3O2 | 详情 | 详情 | |
| (XIII) | 43507 | 2-[(1R)-2-(2,4-difluorophenyl)-1-methyl-2-oxoethyl]-4-[4-(2,2,3,3-tetrafluoropropoxy)phenyl]-2,4-dihydro-3H-1,2,4-triazol-3-one | C20H15F6N3O3 | 详情 | 详情 | |
| (XIV) | 43508 | propyl (2S)-2-hydroxypropanoate | 616-09-1 | C6H12O3 | 详情 | 详情 |
| (XV) | 10388 | Morpholine | 110-91-8 | C4H9NO | 详情 | 详情 |
| (XVI) | 41498 | (2S)-2-hydroxy-1-(4-morpholinyl)-1-propanone | C7H13NO3 | 详情 | 详情 | |
| (XVII) | 43509 | (2S)-1-(4-morpholinyl)-2-(tetrahydro-2H-pyran-2-yloxy)-1-propanone | C12H21NO4 | 详情 | 详情 | |
| (XVIII) | 15488 | 1-bromo-2,4-difluorobenzene | 348-57-2 | C6H3BrF2 | 详情 | 详情 |
| (XIX) | 43511 | (2S)-1-(2,4-difluorophenyl)-2-(tetrahydro-2H-pyran-2-yloxy)-1-propanone | C14H16F2O3 | 详情 | 详情 | |
| (XX) | 43510 | (1S)-2-(2,4-difluorophenyl)-1-methyl-2-oxoethyl trifluoromethanesulfonate | C10H7F5O4S | 详情 | 详情 |