【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 |