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【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
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