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【结 构 式】

【分子编号】59346

【品名】(1S,3aS,4R,6aS)-4-hydroxyoctahydro-1-pentalenyl 2-methylpropanoate

【CA登记号】

【 分 子 式 】C12H20O3

【 分 子 量 】212.289

【元素组成】C 67.89% H 9.5% O 22.61%

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:(XIV)

8. The enantioselective monoacetylation of isosorbide (I) by means of vinyl acetate (VI) catalyzed by Pig liver esterase in dichloromethane gives isosorbide 2-O-acetate (VII), which is nitrated with HNO3 in acetic anhydride to yield isosorbide 2-O-acetate-5-O-nitrate (VIII). Finally, this compound is deacetylated by means of K2CO3 in methanol. 9. The enantioselective monoacylation of isosorbide (I) by means of vinyl butyrate (IX) catalyzed by Chiraclec-BL in THF or Carlsberg subtilisin in tert-butanol gives isosorbide 2-O-butyrate (X), which is nitrated with HNO3 in acetic anhydride to yield isosorbide 2-O-butyrate-5-O-nitrate (XI). Finally, this compound is deacylated by means of K2CO3 in methanol. 10. The acylation of isosorbide (I) with acetic anhydride and pyridine gives the diacetate (XII), which is enantioselectively monodeacetylated by means of lipase from Pseudomonas fluorescens in THF to yield isosorbide 2-O-acetate (VII). This compound is then nitrated to (VIII) and finally deacetylated as already described. 11. The acylation of isosorbide (I) with HOAc and Ac2O gives (after purification by crystallization) isosorbide 2-O-acetate (VII), which is nitrated to (VIII) and finally deacetylated as already described. 12. The acylation of isosorbide (I) with isobutyric acid (XIII) by means of sulfuric acid in refluxing chlorobenzene/toluene gives isosorbide 2-O-isobutyrate (XIV), which is nitrated with HNO3/H2SO4 to yield isosorbide 2-O-isobutyrate-5-O-nitrate (XV). Finally, this compound is deacylated by means of NaOH in toluene/water. 13. The nitration of isosorbide (I) by means of HNO3 in HOAc/Ac2O gives a 3.5/1 mixture of isosorbide-5-O-nitrate and isosorbide 2-O-nitrate that is separated by column chromatography over alumina. 14. The nitration of isosorbide (I) with HNO3 in benzene/HOAc/Ac2O, followed by a purification step yields the target isosorbide-5-O-nitrate.

1 Stoss, P.; Process for the preparation of isosorbide-5-nitrate. DE 3102947; EP 0057847; US 4371703 .
2 Ito, T.; Ishibashi, K.; Ishiguro, S.; Shimada, F.; A method for the preparation of isosorbide-5-nitrate and sodium isosorbide-5-nitrate hydrate as a precursor thereof. EP 0143507; US 4584391 .
3 Dvonch, W.; Alburn, H.E. (Wyeth); Mononitrate esters of 1,4:3,6-dianhydro-d-glucitol. DE 2221080; GB 1356374; US 3886186 .
4 Lauer, K.; Kiegel, E. (Boehringer Ingelheim GmbH); Process for the preparation of 1,4:3,6-dianhydro-D-glucite 5-nitrate (isosorbide-5-nitrate). DE 3028873; EP 0045076; US 4431829 .
5 Schonafinger, K. (Cassella AG); Process for the preparation of 5-isosorbide nitrate. DE 3117612; EP 0064194; US 4431830 .
6 Roberts, S.M.; Marston, R.W.; Quigley, P.F.; Brown, C.M.; Synthesis of isosorbide cpds.. GB 2358859 .
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) 59337 (1R,3aS,4S,6aS)octahydro-1,4-pentalenediol C8H14O2 详情 详情
(VI) 24543 vinyl acetate 108-05-4 C4H6O2 详情 详情
(VII) 59341 (1S,3aS,4R,6aS)-4-hydroxyoctahydro-1-pentalenyl acetate C10H16O3 详情 详情
(VIII) 59342 (1S,3aS,4R,6aS)-4-(nitrooxy)octahydro-1-pentalenyl acetate C10H15NO5 详情 详情
(IX) 53263 n-Butyric acid vinyl ester; Vinyl n-butyrate; Vinyl butyrate 123-20-6 C6H10O2 详情 详情
(X) 59343 (1S,3aS,4R,6aS)-4-hydroxyoctahydro-1-pentalenyl butyrate C12H20O3 详情 详情
(XI) 59344 (1S,3aS,4R,6aS)-4-(nitrooxy)octahydro-1-pentalenyl butyrate C12H19NO5 详情 详情
(XII) 59345 (1R,3aS,4S,6aS)-4-(acetyloxy)octahydro-1-pentalenyl acetate C12H18O4 详情 详情
(XIII) 33399 2-methylpropionic acid 79-31-2 C4H8O2 详情 详情
(XIV) 59346 (1S,3aS,4R,6aS)-4-hydroxyoctahydro-1-pentalenyl 2-methylpropanoate C12H20O3 详情 详情
(XV) 59347 (1S,3aS,4R,6aS)-4-(nitrooxy)octahydro-1-pentalenyl 2-methylpropanoate C12H19NO5 详情 详情
Extended Information