(+)-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

反応式

HRID 635972 の反応式
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]

参加物

5

反応物 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

生成物 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

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

実験手順

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).

後処理

  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

出典と根拠

ORDレコード
ord-e8bad3f1e574425595185bd61ad8a829
出典データセット
uspto-grants-2001_02
特許番号
US06191140B1

関連ノート

読み込み中…