|
【结 构 式】 
|
【分子编号】46247 【品名】 【CA登记号】 |
【 分 子 式 】C27H40N2O5Si 【 分 子 量 】500.71058 【元素组成】C 64.77% H 8.05% N 5.59% O 15.98% Si 5.61% |
与该中间体有关的原料药合成路线共 1 条
合成路线1
该中间体在本合成路线中的序号：(XVII)The reaction of 2-hydroxybenzamide (XI) with cyclohexanone (XII) by means of Ts-OH in toluene gives the spiranic benzoxazine (XIII), which is condensed with 2-bromopropionyl bromide (XIV) by means of pyridine in toluene, yielding the corresponding acylated benzoxazine (XV). The condensation of (XV) with chiral azetidinone (XVI) by means of Zn in refluxing THF affords the adduct (XVII), which is finally hydrolyzed with LiOH and H2O2 to furnish the target azetidinonepropionic acid (I).
| 【1】 Lu, X.; et al.; Process development on (3S,4S)-[(R)-1'((tert-butyldimethylsilyl)oxy)ethyl]-4-[(R)-1-carboxyethyl]-2-azetidinone: 1-beta-methylcarbapanem key intermediate. Org Process Res Dev 2001, 5, 2, 186. |
| 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) | 30029 | (2R)-2-[(2S,3S)-3-((1R)-1-[[tert-butyl(dimethyl)silyl]oxy]ethyl)-4-oxoazetidinyl]propionic acid | C14H27NO4Si | 详情 | 详情 | |
| (XI) | 14652 | salicylamide | 65-45-2 | C7H7NO2 | 详情 | 详情 |
| (XII) | 11059 | Cyclohexanone | 108-94-1 | C6H10O | 详情 | 详情 |
| (XIII) | 46246 | C13H15NO2 | 详情 | 详情 | ||
| (XIV) | 13127 | 2-Bromopropionyl bromide; 2-Bromopropanoyl bromide | 563-76-8 | C3H4Br2O | 详情 | 详情 |
| (XV) | 37738 | 3-(2-Bromo-1-oxopropyl)-spiro[2H-1,3-benzoxazine-2,1'-cyclohexan]-4(3H)-one | 158299-05-9 | C16H18BrNO3 | 详情 | 详情 |
| (XVI) | 11687 | (2R,3R)-3-((1R)-1-[[tert-butyl(dimethyl)silyl]oxy]ethyl)-4-oxoazetanyl acetate | C13H25NO4Si | 详情 | 详情 | |
| (XVII) | 46247 | C27H40N2O5Si | 详情 | 详情 |
Extended Information