【结 构 式】 |
【分子编号】42277 【品名】4-[((2S)-1-[[6-(benzyloxy)-2,5,7,8-tetramethyl-3,4-dihydro-2H-chromen-2-yl]methyl]pyrrolidinyl)methoxy]benzaldehyde 【CA登记号】 |
【 分 子 式 】C33H39NO4 【 分 子 量 】513.677 【元素组成】C 77.16% H 7.65% N 2.73% O 12.46% |
合成路线1
该中间体在本合成路线中的序号:(VII)Mesylate (I) is heated with L-prolinol (II) to furnish pyrrolidine derivative (III), which can be converted into (VII) by different ways: 1) Treatment of (III) with t-BuOK and reaction with 4-fluorobenzaldehyde (IV) in DMF. 2) Conversion of (III) into chloropiperidine derivative (V) by means of SOCl2 in benzene, followed by reaction with 4-hydroxyaldehyde (VI) and K2CO3 in DMF in and chromatographic separation. 3) Mitsunobu reaction between (III) and 4-hydroxyaldehyde (VI) by treatment with PPh3 and DEAD in THF, followed by chromatographic separation. Derivative (VII) is condensed with 2,4-thiazolidinedione (VIII) in toluene in the presence of piperidine and benzoic acid to afford (IX), which is finally converted into its maleate form by treatment with maleic acid in Et2O.
【1】 Lohray, B.B.; Anji Reddy, K.; Bhushan, V.; et al.; Novel antidiabetic and hypolipidemic agents. 5. Hydroxyl versus benzyloxy containing chroman derivatives. J Med Chem 1999, 42, 17, 3265. |
【2】 Alla, S.R.; Ramanujam, R.; Bajji, A.C.; Lohray, B.B.; Lohray, V.B.; Chakrabarti, R. (Dr. Reddy's Research Foundation; Reddy-Cheminor Inc.); Novel heterocyclic cpds. having antidiabetic, hypolipidaemic, antihypertensive properties, process for their preparation and pharmaceutical compsns. containing them. WO 9741121 . |
【3】 Ramanujam, R.; Chakrabarti, R.; Lohray, B.B.; Bajji, A.C.; Lohray, V.B.; Alla, S.R. (Dr. Reddy's Research Foundation); Heterocyclic cpds. having antidiabetic, hypolipidaemic, antihypertensive properties, process for their preparation and pharmaceutical compsns. containing them. US 5889032 . |
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) | 26454 | 6-(benzyloxy)-2,5,7,8-tetramethyl-2-([[methyl(dimethylene)-lambda(6)-sulfanyl]oxy]methyl)chromane | C24H32O3S | 详情 | 详情 | |
(II) | 21347 | (2S)pyrrolidinylmethanol | 23356-96-9 | C5H11NO | 详情 | 详情 |
(III) | 42275 | ((2S)-1-[[6-(benzyloxy)-2,5,7,8-tetramethyl-3,4-dihydro-2H-chromen-2-yl]methyl]pyrrolidinyl)methanol | C26H35NO3 | 详情 | 详情 | |
(IV) | 12337 | 4-fluorobenzaldehyde | 459-57-4 | C7H5FO | 详情 | 详情 |
(V) | 42276 | (3R)-1-[6-(benzyloxy)-2,5,7,8-tetramethyl-3,4-dihydro-2H-chromen-2-yl]-3-chloropiperidine; benzyl 2-[(3R)-3-chloropiperidinyl]-2,5,7,8-tetramethyl-3,4-dihydro-2H-chromen-6-yl ether | C25H32ClNO2 | 详情 | 详情 | |
(VI) | 13433 | 4-Hydroxybenzaldehyde; p-Hydroxybenzaldehyde | 123-08-0 | C7H6O2 | 详情 | 详情 |
(VII) | 42277 | 4-[((2S)-1-[[6-(benzyloxy)-2,5,7,8-tetramethyl-3,4-dihydro-2H-chromen-2-yl]methyl]pyrrolidinyl)methoxy]benzaldehyde | C33H39NO4 | 详情 | 详情 | |
(VIII) | 10883 | 1,3-Thiazolane-2,4-dione; 2,4-Thiazolidinedione | 2295-31-0 | C3H3NO2S | 详情 | 详情 |
(IX) | 42278 | 5-((Z)-[4-[((2S)-1-[[6-(benzyloxy)-2,5,7,8-tetramethyl-3,4-dihydro-2H-chromen-2-yl]methyl]pyrrolidinyl)methoxy]phenyl]methylidene)-1,3-thiazolidine-2,4-dione | C36H40N2O5S | 详情 | 详情 |