中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
瑞格列奈 | 3-methyl-1-[2-(piperidin-1-yl)phenyl]butan-1-amine | 108157-52-4 | C16H26N2 | 246.396 |
—— | 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-piperidinyl)phenyl>butyl>-N-<(R')-1-phenethyl>-amine | 219922-07-3 | 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-pieridinyl)phenyl>butyl>-N-<(S')-1-phenethyl>-amine | 147770-01-2 | C24H34N2 | 350.547 |
—— | (3-methyl-butyl)-(2-piperidino-phenyl)-ketimine | 147769-96-8 | C16H24N2 | 244.38 |
瑞格列奈杂质O | 3-methyl-1-(2-piperidin-1-yl-phenyl)-butan-1-one | 147770-03-4 | C16H23NO | 245.365 |
2-哌啶基-1-苯甲醛 | 2-(piperidin-1-yl)benzaldehyde | 34595-26-1 | C12H15NO | 189.257 |
2-(1-哌啶基)苯甲腈 | 2-(piperidin-1-yl)benzonitrile | 72752-52-4 | C12H14N2 | 186.257 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
瑞格列奈杂质 | (R)-3-methyl-1-(2-(1-pieridinyl)phenyl)-butylamine | 219921-93-4 | C16H26N2 | 246.396 |
—— | N-acetyl-N-<(S)-3-methyl-1-(2-(1-piperidinyl)phenyl)-1-butyl>-amine | 147769-98-0 | C18H28N2O | 288.433 |
—— | N1-<(S)-3-methyl-1-<2-(1-piperidinyl)phenyl>butyl>-N3-<(S')-1-(phenyl)ethyl>-urea | —— | C25H35N3O | 393.572 |
瑞格列奈 | (S)-repaglinide | 135062-02-1 | C27H36N2O4 | 452.594 |
2-乙氧基-4-[2-({3-甲基-1-[2-(1-哌啶基)苯基]丁基}氨基)-2-氧代乙基]苯甲酸 | repaglinide | 147852-26-4 | C27H36N2O4 | 452.594 |
(+)-2-乙氧基-4-(N-3-甲基-1(S)-(2-(1-哌啶基)苯基)-丁基)羰基甲基) | (S)-(+)-ethyl 2-ethoxy-4-<2-<<3-methyl-1-<2-(1-piperidinyl)phenyl>butyl>amino>-2-oxoethyl>-benzoate | 147770-06-7 | C29H40N2O4 | 480.648 |
瑞格列奈杂质E | (R)-(-)-ethyl 2-ethoxy-4-<2-<<3-methyl-1-<2-(1-piperidinyl)phenyl>butyl>amino>-2-oxoethyl>-benzoate | 147770-08-9 | C29H40N2O4 | 480.648 |
—— | ethyl 2-ethoxy-4-<2-<<3-methyl-1-<2-(1-piperidinyl)phenyl>butyl>amino>-2-oxoethyl>-benzoate | 108175-51-5 | C29H40N2O4 | 480.648 |
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.