【结 构 式】 |
【药物名称】CGP-75355 【化学名称】N-(Methoxycarbonyl)-L-tert-leucine N2-(biphenyl-4-ylmethyl)-N2-[2(S)-hydroxy-3(S)-[N-(methoxycarbonyl)-L-tert-leucylamino]-4-phenylbutyl]hydrazide 【CA登记号】191594-64-6 【 分 子 式 】C39H53N5O7 【 分 子 量 】703.88656 |
【开发单位】Novartis (Originator) 【药理作用】AIDS Medicines, Anti-HIV Agents, ANTIINFECTIVE THERAPY, HIV Protease Inhibitors |
合成路线1
Condensation of N-Boc-L-phenylalaninal (I) with 4-biphenylcarbonyl chloride (II) and KCN in the presence of N-benzylcinchoninium chloride (NBC) afforded alpha-acyloxynitrile (III) as a 4:1 mixture of (2R,3S) and (2S,3S) isomers. Hydrogenation of (III) in the presence of Raney Nickel and tert-butyl carbazate, followed by crystallization of the major isomer from acetonitrile provided hydrazone (IV). Subsequent reduction of (IV) to hydrazine using NaBH3CN and p-toluenesulfonic acid, with concomitant rearrangement of the biphenylcarbonyl group furnished hydrazide (V), which was reduced to the benzyl hydrazine (VI) by means of either BH3 or DIBAL-H. Deprotection of both Boc groups of (VI) with HCl gave diamino compound (VII). Finally, coupling of N-methoxycarbonyl-L-tert-leucine (IX), (prepared by reaction of tert-leucine (VIII) with methyl chloroformate), with diamine (VII) employing O-(1,2-dihydro-2-oxo-1-pyridyl)-N,N,N',N'-tetramethyluronium tetra-fluoroborate (TPTU) provided the target bisamide.
【1】 Fassler, A.; Bold, G.; Capraro, H.-G.; Lang, M. (Novartis AG); Azahexane derivs. as substrate isosters of retroviral asparate proteases. EP 0876336; JP 1999514996; WO 9719055 . |
【2】 Fassler, A.; Steiner, H.; Bold, G.; Capraro, H.-G. (Novartis AG); Process for the preparation of hydrazine derivs. useful as intermediates for the preparation of peptide analogues. WO 9746514 . |
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) | 23452 | tert-butyl (1S)-1-benzyl-2-oxoethylcarbamate | C14H19NO3 | 详情 | 详情 | |
(II) | 28439 | [1,1'-biphenyl]-4-carbonyl chloride | 14002-51-8 | C13H9ClO | 详情 | 详情 |
(III) | 28440 | (2S)-2-[(tert-butoxycarbonyl)amino]-1-cyano-3-phenylpropyl [1,1'-biphenyl]-4-carboxylate | C28H28N2O4 | 详情 | 详情 | |
(IV) | 28441 | (1R,2S)-2-[(tert-butoxycarbonyl)amino]-1-[[(E)-2-(tert-butoxycarbonyl)hydrazono]methyl]-3-phenylpropyl [1,1'-biphenyl]-4-carboxylate | C33H39N3O6 | 详情 | 详情 | |
(V) | 28442 | tert-butyl 2-([1,1'-biphenyl]-4-ylcarbonyl)-2-[(2S,3S)-3-[(tert-butoxycarbonyl)amino]-2-hydroxy-4-phenylbutyl]-1-hydrazinecarboxylate | C33H41N3O6 | 详情 | 详情 | |
(VI) | 28443 | tert-butyl 2-([1,1'-biphenyl]-4-ylmethyl)-2-[(2S,3S)-3-[(tert-butoxycarbonyl)amino]-2-hydroxy-4-phenylbutyl]-1-hydrazinecarboxylate | C33H43N3O5 | 详情 | 详情 | |
(VII) | 28444 | (2S,3S)-3-amino-1-[1-([1,1'-biphenyl]-4-ylmethyl)hydrazino]-4-phenyl-2-butanol | C23H27N3O | 详情 | 详情 | |
(VIII) | 28445 | (2S)-2-amino-3,3-dimethylbutyric acid | C6H13NO2 | 详情 | 详情 | |
(IX) | 23447 | (2S)-2-[(methoxycarbonyl)amino]-3,3-dimethylbutyric acid | C8H15NO4 | 详情 | 详情 |
合成路线2
In an alternative procedure, condensation of 4-biphenylcarbaldehyde (X) with tert-butyl carbazate afforded hydrazone (XI), which was reduced to the benzylhydrazine (XII) by hydrogenation over Pd/C. Opening of the Boc-protected epoxide (XIII) with hydrazine (XII) gave hydrazinoalcohol (VI). This was deprotected with HCl and then coupled as above with N-methoxycarbonyl-L-tert-leucine (X) by means of TPTU.
【1】 New aza-dipeptide analogues as potent and orally a. J Med Chem 1998, 41, 18, 3387. |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
(VI) | 28443 | tert-butyl 2-([1,1'-biphenyl]-4-ylmethyl)-2-[(2S,3S)-3-[(tert-butoxycarbonyl)amino]-2-hydroxy-4-phenylbutyl]-1-hydrazinecarboxylate | C33H43N3O5 | 详情 | 详情 | |
(IX) | 23447 | (2S)-2-[(methoxycarbonyl)amino]-3,3-dimethylbutyric acid | C8H15NO4 | 详情 | 详情 | |
(X) | 28446 | [1,1'-biphenyl]-4-carbaldehyde | 3218-36-8 | C13H10O | 详情 | 详情 |
(XI) | 28447 | tert-butyl (Z)-2-([1,1'-biphenyl]-4-ylmethyl)-1-diazenecarboxylate | C18H20N2O2 | 详情 | 详情 | |
(XII) | 28448 | tert-butyl 2-([1,1'-biphenyl]-4-ylmethyl)-1-hydrazinecarboxylate | C18H22N2O2 | 详情 | 详情 | |
(XIII) | 23444 | tert-butyl (1S)-1-[(2R)oxiranyl]-2-phenylethylcarbamate | C15H21NO3 | 详情 | 详情 |