(+)-8-Phenylmenthol → (1R,2S,5R)-5-methyl-2-(1-methyl-1-phenylethyl)cyclohexyl 5-(3-bromo-4-fluorophenyl)-4,6-dioxo-1,3,4,5,6,7,8,9-octahydro-2H-cyclopenta[b][1,7]naphthyridine-2-carboxylate

HRID 635972

Reaktionsgleichung

Reaktionsgleichung von HRID 635972
C([N:8]1[CH2:17][C:16]2[NH:15][C:14]3[CH2:18][CH2:19][C:20](=[O:21])[C:13]=3[CH:12]([C:22]3[CH:27]=[CH:26][C:25]([F:28])=[C:24]([Br:29])[CH:23]=3)[C:11]=2[C:10](=[O:30])[CH2:9]1)C1C=CC=CC=1.Cl[C:32]([O:34][CH:35]1[CH:40]([C:41]([C:44]2[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=2)([CH3:43])[CH3:42])[CH2:39][CH2:38][CH:37]([CH3:50])[CH2:36]1)=[O:33].C1(C(C)(C)C2CCC(C)CC2O)C=CC=CC=1>C1COCC1>[Br:29][C:24]1[CH:23]=[C:22]([CH:12]2[C:11]3[C:10](=[O:30])[CH2:9][N:8]([C:32]([O:34][C@@H:35]4[CH2:36][C@H:37]([CH3:50])[CH2:38][CH2:39][C@H:40]4[C:41]([CH3:42])([C:44]4[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=4)[CH3:43])=[O:33])[CH2:17][C:16]=3[NH:15][C:14]3[CH2:18][CH2:19][C:20](=[O:21])[C:13]2=3)[CH:27]=[CH:26][C:25]=1[F:28]

Komponenten

5

Edukt 3

HCID 577105(+)-8-PhenylmentholHCID 113288132-benzyl-5-(3-bromo-4-fluorophenyl)-2,3,5,7,8,9-hexahydro-1H-cyclopenta[b][1,7]naphthyridine-4,6-dioneHCID 145714908-Phenylmenthol chloroformate

Produkt 1

HCID 69302932(1R,2S,5R)-5-methyl-2-(1-methyl-1-phenylethyl)cyclohexyl 5-(3-bromo-4-fluorophenyl)-4,6-dioxo-1,3,4,5,6,7,8,9-octahydro-2H-cyclopenta[b][1,7]naphthyridine-2-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

A solution of the product from Example 5A (1.9 g, 4.0 mmol) in THF (30 mL) was treated with 8-phenylmenthol chloroformate prepared from (−)-8-phenylmenthol as described in (Yamamoto, Y., J. Amer. Chem. Soc. (1992), 114, 121-125) (1.45 g, 4.92 mmol) in THF (10 mL), stirred for 3 days at ambient temperature and partitioned between aqueous sodium bicarbonate and methylene chloride. The organic layer as separated, dried with sodium sulfate, filtered and concentrated to provide a mixture of diasteromeric carbamates. The diastereomeric mixture was subjected to column chromatography over silica gel (20% hexanes/ethyl acetate) to provide the title compound (0.32 g) as the less polar diastereomer and mixed fractions containing both diastereomers (0.9 g).

Aufarbeitung

  1. custompartitioned between aqueous sodium bicarbonate and methylene chloride
  2. customThe organic layer as separated
  3. dry with materialdried with sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customto provide

Quellen und Nachweise

ORD-Eintrag
ord-e8bad3f1e574425595185bd61ad8a829
Quelldatensatz
uspto-grants-2001_02
Patentnummer
US06191140B1

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