【结 构 式】 |
【分子编号】20695 【品名】(2S)-2-([(2R)-2-[allyl(tert-butoxycarbonyl)amino]propanoyl]amino)propionic acid 【CA登记号】 |
【 分 子 式 】C14H24N2O5 【 分 子 量 】300.35504 【元素组成】C 55.99% H 8.05% N 9.33% O 26.63% |
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:(IX)Alternatively, a chiral synthesis of intermediate (V) was developed from enantiopure amino acids. N-Boc-D-alanine (VI) was N-alkylated with allyl bromide in the presence of two equivalents of NaH, and the resulting N-allyl amino acid (VII) was coupled with L-alanine methyl ester (VIII) using 1-dimethylaminopropyl-3-ethylcarbodiimide (DEC) to provide dipeptide (IX). Subsequent acid treatment of (IX) produced both Boc deprotection and cyclization to the diketopiperazine (X), which was finally reduced to piperazine (V) with LiAlH4.
【1】 Chang, K.-J.; Bishop, M.J.; Bubacz, D.G.; McNutt, R.W. Jr. (Glaxo Wellcome plc); Piperazine cpds. used in therapy. EP 0711289; JP 1997501156; WO 9504051 . |
【2】 Chang, K.; Boswell, G.E.; Bubacz, D.G.; Collins, M.A.; Davis, A.O.; McNutt, R.W. (Delta Pharmaceuticals, Inc.); Opioid diarylmethylpiperazines and piperidines. JP 1995503247; US 5658908; US 5681830; WO 9315062 . |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
(V) | 20690 | (2R,5S)-1-allyl-2,5-dimethylpiperazine | C9H18N2 | 详情 | 详情 | |
(VI) | 15859 | Boc-D-Alanine; (2R)-2-[(tert-butoxycarbonyl)amino]propionic acid | 7764-95-6 | C8H15NO4 | 详情 | 详情 |
(VII) | 20693 | (2R)-2-[allyl(tert-butoxycarbonyl)amino]propionic acid | C11H19NO4 | 详情 | 详情 | |
(VIII) | 20694 | methyl (2S)-2-aminopropanoate | C4H9NO2 | 详情 | 详情 | |
(IX) | 20695 | (2S)-2-([(2R)-2-[allyl(tert-butoxycarbonyl)amino]propanoyl]amino)propionic acid | C14H24N2O5 | 详情 | 详情 | |
(X) | 20696 | (3S,6R)-1-allyl-3,6-dimethyl-2,5-piperazinedione | C9H14N2O2 | 详情 | 详情 |
Extended Information