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【结 构 式】

【药物名称】GW-5950X

【化学名称】2(R)-Benzyl-5-[3(R),5(R)-dibenzyl-2-oxopyrrolidin-1-yl]-4(S)-hydroxy-N-[2(R)-hydroxyindan-1(S)-yl]pentanamide

【CA登记号】240127-97-3 (undefined stereoch.)

【 分 子 式 】C39H42N2O4

【 分 子 量 】602.78059

【开发单位】Vertex (Originator), GlaxoSmithKline (Codevelopment)

【药理作用】AIDS Medicines, Anti-HIV Agents, ANTIINFECTIVE THERAPY, HIV Protease Inhibitors

合成路线1

Wittig reaction of N-(benzyloxycarbonyl)-L-phenylalaninal (I) with methyl (triphenylphosphoranylidene)acetate produced unsaturated ester (II). Double bond reduction in (II) with concomitant cyclization and N-deprotection upon treatment with Mg in MeOH furnished (R)-5-benzyl-2-pyrrolidinone (III), which was further protected as the N-Boc derivative (IV) (1). Alkylation of (IV) with benzyl bromide in the presence of LDA in THF at -78 C provided the trans-3,5-dimethylpyrrolidinone (V) as the predominant diastereoisomer. After Boc group cleavage using trifluoroacetic acid, pyrrolidinone (VI) was coupled with epoxide (VII) yielding adduct (VIII). The acetonide protecting group of (VIII) was finally hydrolyzed with HCl to give the title compound.

1 Kazmierski, W.; Andrews, W. III; Baker, C.; et al.; Heterocyclic isosteres of the P1/P2 domain of amprenavir: Discovery of novel, picomolar HIV-1 protease inhibitors. 219th ACS Natl Meet (March 26 2000, San Francisco) 2000, Abst MEDI 126.
2 Tung, R.D.; Salituro, F.G.; Deininger, D.D.; Bhisetti, G.R.; Baker, C.T.; Spaltenstein, A.; Kazmierski, W.M.; Andrews, C.W. III (Vertex Pharmaceuticals Inc.); Aspartyl protease inhibitors. JP 2000501111; US 5945413; WO 9727180 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
12912 1-(Bromomethyl)benzene; Alpha-bromotoluene 100-39-0 C7H7Br 详情 详情
14689 Methyl (triphenylphosphoranylidene)acetate; (methoxycarbonylmethylene)triphenylphosphorane;Methyl 2-(triphenyl-lambda(5)-phosphanylidene)acetate 2605-67-6 C21H19O2P 详情 详情
(I) 16586 benzyl N-[(1S)-1-benzyl-2-oxoethyl]carbamate C17H17NO3 详情 详情
(II) 38970 methyl (E,4S)-4-[[(benzyloxy)carbonyl]amino]-5-phenyl-2-pentenoate C20H21NO4 详情 详情
(III) 38971 (5R)-5-benzyl-2-pyrrolidinone C11H13NO 详情 详情
(IV) 38972 tert-butyl (2R)-2-benzyl-5-oxo-1-pyrrolidinecarboxylate C16H21NO3 详情 详情
(V) 38973 tert-butyl (3S,5R)-3,5-dibenzyl-2-oxo-1-pyrrolidinecarboxylate C23H27NO3 详情 详情
(VI) 38974 (3S,5R)-3,5-dibenzyl-2-pyrrolidinone C18H19NO 详情 详情
(VII) 16243 (2R)-1-[(3aS,8aR)-2,2-dimethyl-8,8a-dihydro-2H-indeno[1,2-d][1,3]oxazol-3(3aH)-yl]-2-benzyl-3-[(2S)oxiranyl]-1-propanone C24H27NO3 详情 详情
(VIII) 38975 (3S,5R)-1-[(2S,4R)-5-[(3aS,8aR)-2,2-dimethyl-8,8a-dihydro-2H-indeno[1,2-d][1,3]oxazol-3(3aH)-yl]-4-benzyl-2-hydroxy-5-oxopentyl]-3,5-dibenzyl-2-pyrrolidinone C42H46N2O4 详情 详情

合成路线2

The condensation of indeno[1,2-d]oxazole derivative (I) with (S)-(+)-glycidyl tosylate (II) by means of LiHMDS gives the adduct (III), which is deprotected with HCl to yield the epoxide (IV). Finally, this compound is condensed with the dibenzylpyrrolidone (V) by means of P4 phosphazene base (commercially available) in THF to afford the target amide.

1 Spaltenstein, A.; Cleary, D.G.; Almond, M.R.; Kazmierski, W.M.; Wright, L.L.; Tung, R.D.; Hazen, R.J.; Furfine, E.S.; Salituro, F.G.; Bock, W.J.; Novel inhibitors of HIV protease: Design, synthesis and biological evaluation of picomolar inhibitors containing cyclic P1/P2 scaffolds. Bioorg Med Chem Lett 2000, 10, 11, 1159.
2 Askin, D.; Eng, K.K.; Rossen, K.; Purick, R.M.; Wells, K.M.; Volante, R.P.; Reider, P.J.; Highly diastereoselective reaction of a chiral, non-racemic amide enolate with (S)-glycidyl tosylate. Synthesis of the orally active HIV-1 protease inhibitor L-735,524. Tetrahedron Lett 1994, 35, 5, 673-6.
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) 16241 1-[(3aS,8aR)-2,2-dimethyl-8,8a-dihydro-2H-indeno[1,2-d][1,3]oxazol-3(3aH)-yl]-3-phenyl-1-propanone C21H23NO2 详情 详情
(II) 16740 (2S)-(+)-Glycidyl tosylate; (2S)oxiranylmethyl 4-methylbenzenesulfonate 70987-78-9 C10H12O4S 详情 详情
(III) 16243 (2R)-1-[(3aS,8aR)-2,2-dimethyl-8,8a-dihydro-2H-indeno[1,2-d][1,3]oxazol-3(3aH)-yl]-2-benzyl-3-[(2S)oxiranyl]-1-propanone C24H27NO3 详情 详情
(IV) 50304 (2R)-2-benzyl-N-[(1S,2R)-2-hydroxy-2,3-dihydro-1H-inden-1-yl]-3-[(2S)oxiranyl]propanamide C21H23NO3 详情 详情
(V) 38974 (3S,5R)-3,5-dibenzyl-2-pyrrolidinone C18H19NO 详情 详情
Extended Information