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【结 构 式】

【分子编号】38975

【品名】(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

【CA登记号】

【 分 子 式 】C42H46N2O4

【 分 子 量 】642.83832

【元素组成】C 78.47% H 7.21% N 4.36% O 9.96%

与该中间体有关的原料药合成路线共 2 条

合成路线1

该中间体在本合成路线中的序号:(VIII)

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

该中间体在本合成路线中的序号:(III)

The title compound has been prepared by two related ways. The alkylation of 2-fluoro-4-hydroxybenzonitrile (I) with 3,4-(methylenedioxy)benzyl chloride (II) afforded ether (III). This was coupled with (R,S)-2-hydroxy-2-(2-methylphenyl)acetic acid (IV) in the presence of NaH in DMSO to produce the racemic adduct (V). Resolution was then achieved by fractional crystallization of the diastereoisomeric salts with (-)-ephedrine to furnish the desired (S)-enantiomer, which was finally isolated as the corresponding sodium salt.

1 Astles, P.C.; Brown, T.J.; Halley, F.; et al.; Selective ETA antagonists. 5. Discovery and structure-activity relationships of phenoxyphenylacetic acid derivatives. J Med Chem 2000, 43, 5, 900.
2 Porter, B.; Astles, P.C.; Bridge, A.W.; McLay, I.M.; Van Sickle, A.P.; Walsh, R.J.A.; McCarthy, C.; Morley, A.D.; Halley, F.; Harris, N.V.; Majid, T.N.; Smith, C. (Rhône-Poulenc Rorer Ltd.); Substd. phenyl cpds. as endothelin antagonists. US 6048893; US 6124343; WO 9622978 .
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) 20094 2,4-dihydroxybenzaldehyde 95-01-2 C7H6O3 详情 详情
(II) 28617 5-(chloromethyl)-1,3-benzodioxole C8H7ClO2 详情 详情
(III) 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
(IV) 38977 2-hydroxy-2-(2-methylphenyl)acetic acid C9H10O3 详情 详情
(V) 38978 2-[5-(1,3-benzodioxol-5-ylmethoxy)-2-cyanophenoxy]-2-(2-methylphenyl)acetic acid C24H19NO6 详情 详情
Extended Information