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【结 构 式】 
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【分子编号】58786 【品名】ethyl (2R)-4-oxo-1-[(1S)-1-phenylethyl]-2-piperidinecarboxylate 【CA登记号】 |
【 分 子 式 】C16H21NO3 【 分 子 量 】275.34768 【元素组成】C 69.79% H 7.69% N 5.09% O 17.43% |
合成路线1
该中间体在本合成路线中的序号：(V)Condensation between (S)-alpha-methylbenzylamine (I) and ethyl glyoxylate (II) afforded imine (III), which was subjected to hetero-Diels-Alder cycloaddition with 2-(trimethylsilyloxy)-1,3-butadiene (IV) producing piperidinecarboxylate (V) as the major diastereoisomer. Ketalization of (V) with triethyl orthoformate gave the corresponding the diethyl acetal (VI). The ester group of (VI) was then reduced to alcohol (VII) employing LiAlH4. Mitsunobu condensation of alcohol (VII) with phthalimide (VIII) gave (IX) which, followed by acidic ketal hydrolysis, furnished (X). Condensation of piperidinone (X) with t-butyl cyanoacetate (XI) in the presence of sulfur and morpholine gave rise to two regioisomeric thienopyridine derivatives (XII) and (XIII), which were separated by column chromatography.
| 【1】 Lau, J.; Andersen, H.S.; Newman, M.J.; Hansen, T.K.; Olsen, O.H.; Bakir, F.; Holsworth, D.D.; Axe, F.U.; Ge, Y.; Uyeda, R.T.; Judge, L.M.; Moeller, N.P.H.; Shapira, B.Z. (Novo Nordisk A/S; Ontogen Corp.); Modulators of protein tyrosine phosphatases (PTPases). WO 0204459 . |
| 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) | 20042 | (1S)-1-phenyl-1-ethanamine; (1S)-1-phenylethylamine | C8H11N | 详情 | 详情 | |
| (II) | 48591 | Ethyl glyoxylate; Ethyl oxoacetate; Glyoxylic acid ethyl ester | 924-44-7 | C4H6O3 | 详情 | 详情 |
| (III) | 58785 | ethyl 2-{[(1S)-1-phenylethyl]imino}acetate | C12H15NO2 | 详情 | 详情 | |
| (IV) | 18557 | 1-methylene-2-propenyl trimethylsilyl ether; trimethyl[(1-methylene-2-propenyl)oxy]silane | 38053-91-7 | C7H14OSi | 详情 | 详情 |
| (V) | 58786 | ethyl (2R)-4-oxo-1-[(1S)-1-phenylethyl]-2-piperidinecarboxylate | C16H21NO3 | 详情 | 详情 | |
| (VI) | 58787 | ethyl (2R)-4,4-diethoxy-1-[(1S)-1-phenylethyl]-2-piperidinecarboxylate | C20H31NO4 | 详情 | 详情 | |
| (VII) | 58788 | {(2R)-4,4-diethoxy-1-[(1S)-1-phenylethyl]piperidinyl}methanol | C18H29NO3 | 详情 | 详情 | |
| (VIII) | 12376 | Phthalimide; 1H-Isoindole-1,3(2H)-dione; Isoindole-1,3-dione;Phthalic dicarboximide;Phenylimide;Isoindole-1,3-dione | 85-41-6 | C8H5NO2 | 详情 | 详情 |
| (IX) | 58789 | 2-({(2R)-4,4-diethoxy-1-[(1S)-1-phenylethyl]piperidinyl}methyl)-1H-isoindole-1,3(2H)-dione | C26H32N2O4 | 详情 | 详情 | |
| (X) | 58790 | 2-({(2R)-4-oxo-1-[(1S)-1-phenylethyl]piperidinyl}methyl)-1H-isoindole-1,3(2H)-dione | C22H22N2O3 | 详情 | 详情 | |
| (XI) | 14330 | tert-Butyl cyanoacetate; tert-butyl 2-cyanoacetate | 1116-98-9 | C7H11NO2 | 详情 | 详情 |
| (XII) | 58791 | tert-butyl (7S)-2-amino-7-[(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)methyl]-6-[(1S)-1-phenylethyl]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate | C29H31N3O4S | 详情 | 详情 | |
| (XIII) | 58792 | tert-butyl (5R)-2-amino-5-[(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)methyl]-6-[(1S)-1-phenylethyl]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate | C29H31N3O4S | 详情 | 详情 |