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【结 构 式】 
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【分子编号】57517 【品名】2,2-dimethoxyethyl benzoate 【CA登记号】 |
【 分 子 式 】C11H14O4 【 分 子 量 】210.22976 【元素组成】C 62.85% H 6.71% O 30.44% |
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：(VII)Ketal exchange between the chiral acetonide (I) and 2-(benzoyloxy)acetaldehyde (II) under acidic conditions affords the 2-(benzoyloxymethyl) dioxolane (III) as a diastereomeric mixture. Alternatively, diazotization of D-serine (IV) in the presence of NaNO2 and H2SO4 produces D-glyceric acid (V), which is further esterified with methanol to afford the methyl ester (VI). Condensation of dihydroxy ester (VI) with 2-(benzoyloxy)acetaldehyde dimethyl acetal (VII) then gives dioxolane (III).
| 【1】 Nguyen-Ba, N. (Shire BioChem Inc.); Antiviral nucleoside analogues. EP 1140937; JP 2002533470; US 6358963; WO 0039143 . |
| 【2】 Cimpoia, A.; Janes, L.; Kazlauskas, R. (Shire BioChem Inc.); Stereoselective synthesis of nucleoside analogues. WO 0047759 . |
| 【3】 Cimpoia, A.; Wang, Y.-F. (Shire BioChem Inc.); Stereoselective synthesis of nucleoside analogues. WO 0158894 . |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (IIIa) | 57514 | methyl (2S,4R)-2-[(benzoyloxy)methyl]-1,3-dioxolane-4-carboxylate | C13H14O6 | 详情 | 详情 | |
| (IIIb) | 57515 | methyl (2R,4R)-2-[(benzoyloxy)methyl]-1,3-dioxolane-4-carboxylate | C13H14O6 | 详情 | 详情 | |
| (I) | 20917 | methyl (4R)-2,2-dimethyl-1,3-dioxolane-4-carboxylate | 52373-72-5 | C7H12O4 | 详情 | 详情 |
| (II) | 15605 | 2-oxoethyl benzoate | C9H8O3 | 详情 | 详情 | |
| (IV) | 15728 | (+)-2-Amino-3-hydroxypropionic acid; D-(+)-Serine; D-serine | 312-84-5 | C3H7NO3 | 详情 | 详情 |
| (V) | 57516 | (2R)-2,3-dihydroxypropanoic acid | C3H6O4 | 详情 | 详情 | |
| (VI) | 20916 | methyl (2R)-2,3-dihydroxypropanoate | C4H8O4 | 详情 | 详情 | |
| (VII) | 57517 | 2,2-dimethoxyethyl benzoate | C11H14O4 | 详情 | 详情 |
Extended Information