【结 构 式】 |
【分子编号】44111 【品名】tert-butyl 3-[((2S)-2-[[(benzyloxy)carbonyl]amino]-3-methylbutanoyl)amino]-5-fluoro-4-hydroxypentanoate 【CA登记号】 |
【 分 子 式 】C22H33FN2O6 【 分 子 量 】440.5123032 【元素组成】C 59.99% H 7.55% F 4.31% N 6.36% O 21.79% |
合成路线1
该中间体在本合成路线中的序号:(VII)2-Fluoroethanol (I) was oxidized under Swern conditions to afford 2-fluoroacetaldehyde (II), which was condensed with tert-butyl 3-nitropropionate (III), yielding the hydroxy ester (IV). Hydrogenation of the nitro group of (IV) over Raney nickel produced amine (V). Subsequent coupling of N-carbobenzoxy-L-valine (VI) with amine (V) in the presence of EDC and HOBt furnished amide (VII). The hydroxyl group of (VII) was then oxidized to the corresponding ketone (VIII) by using Dess-Martin periodinane. Finally, the tert-butyl ester was cleaved by treatment with trifluoroacetic acid.
【1】 Guastella, J.; Yang, W.; Cai, S.X.; Keana, J.F.W.; Drewe, J.A. (Cytovia, Inc.); Dipeptide apoptosis inhibitors and the use thereof. EP 1033910; US 6184210; WO 9918781 . |
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) | 44106 | 2-fluoro-1-ethanol | 371-62-0 | C2H5FO | 详情 | 详情 |
(II) | 44107 | 2-fluoroacetaldehyde | C2H3FO | 详情 | 详情 | |
(III) | 44108 | tert-butyl 3-nitropropanoate | C7H13NO4 | 详情 | 详情 | |
(IV) | 44109 | tert-butyl 5-fluoro-4-hydroxy-3-nitropentanoate | C9H16FNO5 | 详情 | 详情 | |
(V) | 44110 | tert-butyl 3-amino-5-fluoro-4-hydroxypentanoate | C9H18FNO3 | 详情 | 详情 | |
(VI) | 18092 | (2S)-2-[[(benzyloxy)carbonyl]amino]-3-methylbutyric acid | C13H17NO4 | 详情 | 详情 | |
(VII) | 44111 | tert-butyl 3-[((2S)-2-[[(benzyloxy)carbonyl]amino]-3-methylbutanoyl)amino]-5-fluoro-4-hydroxypentanoate | C22H33FN2O6 | 详情 | 详情 | |
(VIII) | 44112 | tert-butyl 3-[((2S)-2-[[(benzyloxy)carbonyl]amino]-3-methylbutanoyl)amino]-5-fluoro-4-oxopentanoate | C22H31FN2O6 | 详情 | 详情 |