中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | ethyl 2-ethoxy-4-<2-<<3-methyl-1-<2-(1-piperidinyl)phenyl>butyl>amino>-2-oxoethyl>-benzoate | 108175-51-5 | C29H40N2O4 | 480.648 |
瑞格列奈 | (S)-repaglinide | 135062-02-1 | C27H36N2O4 | 452.594 |
—— | ethyl (S)-2-hydroxy-4-[N-(1-(2-piperidino-phenyl)-3-methyl-1-butyl)-aminocarbonylmethyl]-benzoate | 147770-07-8 | C27H36N2O4 | 452.594 |
—— | N-acetyl-N-<(S)-3-methyl-1-(2-(1-piperidinyl)phenyl)-1-butyl>-amine | 147769-98-0 | C18H28N2O | 288.433 |
—— | N-<(S)-3-methyl-1-<2-(1-pieridinyl)phenyl>butyl>-N-<(S')-1-phenethyl>-amine | 147770-01-2 | C24H34N2 | 350.547 |
—— | N-<(R)-3-methyl-1-<2-(1-piperidinyl)phenyl>butyl>-N-<(R')-1-phenethyl>-amine | 219921-97-8 | C24H34N2 | 350.547 |
—— | N-<(S)-3-methyl-1-<2-(1-piperidinyl)phenyl>butyl>-N-<(R')-1-phenethyl>-amine | 219922-07-3 | C24H34N2 | 350.547 |
—— | ethyl 4-(2-amino-2-oxoethyl)-2-ethoxybenzoate | —— | C13H17NO4 | 251.282 |
(S)-3-甲基-1-[2-(1-哌啶基)苯基]丁胺 | (S)-3-methyl-1-(2-piperidin-1-yl-phenyl)butylamine | 147769-93-5 | C16H26N2 | 246.396 |
瑞格列奈 | 3-methyl-1-[2-(piperidin-1-yl)phenyl]butan-1-amine | 108157-52-4 | C16H26N2 | 246.396 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
瑞格列奈 | (S)-repaglinide | 135062-02-1 | C27H36N2O4 | 452.594 |
The development of a large-scale synthesis for (1S)-3-methyl-1-(2-piperidin-1-ylphenyl)butan-1-amine (S-(+)-1), a key intermediate of repaglinide (2), is described. The process conditions for S-(+)-1 involving nucleophilic substitution, Grignard reaction, reduction and resolution were optimized and telescoped. The racemization of the undesired enantiomer R-(?)-1 offers a distinctive advantage in terms of cost and overall yield over the existing process. This communication also describes the control of a DcU byproduct obtained during the condensation of S-(+)-1 with phenyl acetic acid derivative 3 in the synthesis of 2.