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【结 构 式】 
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【分子编号】64291 【品名】(4aS,4bR,5S,6aS,6bS,8R,9aR,10aS,10bS,12S)-4b,12-difluoro-5-hydroxy-4a,6a-dimethyl-6b-(2-{[(3R)-2-oxotetrahydro-3-furanyl]sulfanyl}acetyl)-8-propyl-3,4,4a,4b,5,6,6a,6b,9a,10,10a,10b,11,12-tetradecahydro-2H-naphtho[2',1':4,5]indeno[1,2-d][1,3]dioxol-2 【CA登记号】 |
【 分 子 式 】C29H38F2O7S 【 分 子 量 】568.6793264 【元素组成】C 61.25% H 6.74% F 6.68% O 19.69% S 5.64% |
合成路线1
该中间体在本合成路线中的序号：(VI)Ketal exchange of acetonide (I) with butyraldehyde (II) under acidic conditions provides the corresponding butylidene ketal (III). The primary alcohol group of (III) is then mesylated with methanesulfonyl chloride in pyridine to furnish (IV). Subsequent displacement of the mesylate group of (IV) by racemic alpha-mercapto-gamma-butyrolactone (V) gives rise to a mixture of the title compound along with its (R)-epimer (VI), which can be separated employing preparative HPLC. (1,2)
| 【1】 Angell, R.M.; Biggadike, K.; Farrell, R.M.; Flack, S.S.; Hancock, A.P.; Irving, W.R.; Lynn, S.M.; Procopiou, P.A.; Novel glucocorticoid antedrugs possessing a 21-(gamma-lactone) ring. J Chem Soc - Perkins Trans I 2002, 6, 831. |
| 【2】 Farrell, R.M.; Biggadike, K. (Glaxo Wellcome Inc.); 21-(2-Oxo-tetrahydrofuran)-thio pregnane derivs., a process for their production and pharmaceutical compsns. containing them. US 6013244; WO 9724367 . |
| 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) | 47571 | (4aS,4bR,5S,6aS,6bS,9aR,10aS,10bS,12S)-4b,12-difluoro-6b-glycoloyl-5-hydroxy-4a,6a,8,8-tetramethyl-3,4,4a,4b,5,6,6a,6b,9a,10,10a,10b,11,12-tetradecahydro-2H-naphtho[2',1':4,5]indeno[1,2-d][1,3]dioxol-2-one | C24H32F2O6 | 详情 | 详情 | |
| (II) | 23694 | butyraldehyde | 123-72-8 | C4H8O | 详情 | 详情 |
| (III) | 47572 | (4aS,4bR,5S,6aS,6bS,8R,9aR,10aS,10bS,12S)-4b,12-difluoro-6b-glycoloyl-5-hydroxy-4a,6a-dimethyl-8-propyl-3,4,4a,4b,5,6,6a,6b,9a,10,10a,10b,11,12-tetradecahydro-2H-naphtho[2',1':4,5]indeno[1,2-d][1,3]dioxol-2-one | C25H34F2O6 | 详情 | 详情 | |
| (IV) | 64290 | 2-[(4aS,4bR,5S,6aS,8R,9aR,10aS,10bS,12S)-4b,12-difluoro-5-hydroxy-4a,6a-dimethyl-2-oxo-8-propyl-2,3,4,4a,4b,5,6,6a,9a,10,10a,10b,11,12-tetradecahydro-6bH-naphtho[2',1':4,5]indeno[1,2-d][1,3]dioxol-6-yl]-2-oxoethyl methanesulfonate | C26H36F2O8S | 详情 | 详情 | |
| (V) | 46294 | 3-sulfanyldihydro-2(3H)-furanone | C4H6O2S | 详情 | 详情 | |
| (VI) | 64291 | (4aS,4bR,5S,6aS,6bS,8R,9aR,10aS,10bS,12S)-4b,12-difluoro-5-hydroxy-4a,6a-dimethyl-6b-(2-{[(3R)-2-oxotetrahydro-3-furanyl]sulfanyl}acetyl)-8-propyl-3,4,4a,4b,5,6,6a,6b,9a,10,10a,10b,11,12-tetradecahydro-2H-naphtho[2',1':4,5]indeno[1,2-d][1,3]dioxol-2 | C29H38F2O7S | 详情 | 详情 |