Pyridine → 6-(3-Hydroxypropylcarbamoyloxy)-5-methoxy-4-[2-methyl-3-(3-methyl-2-butenyl)oxiranyl]-1-oxaspiro[2,5]octane

HRID 964357ノート

反応式

HRID 964357 の反応式
[OH:1][CH:2]1[CH2:9][CH2:8][C:5]2([O:7][CH2:6]2)[CH:4]([C:10]2([CH3:18])[CH:12]([CH2:13][CH:14]=[C:15]([CH3:17])[CH3:16])[O:11]2)[CH:3]1[O:19][CH3:20].N1C=CC=CC=1.Cl[C:28]([O:30][C:31]1[CH:36]=[CH:35][C:34]([N+:37]([O-:39])=[O:38])=[CH:33][CH:32]=1)=[O:29].[NH2:40][CH2:41][CH2:42][CH2:43][OH:44]>ClCCl.C(OCC)C>[CH3:20][O:19][CH:3]1[CH:2]([O:1][C:28]([O:30][C:31]2[CH:32]=[CH:33][C:34]([N+:37]([O-:39])=[O:38])=[CH:35][CH:36]=2)=[O:29])[CH2:9][CH2:8][C:5]2([O:7][CH2:6]2)[CH:4]1[C:10]1([CH3:18])[CH:12]([CH2:13][CH:14]=[C:15]([CH3:17])[CH3:16])[O:11]1.[OH:44][CH2:43][CH2:42][CH2:41][NH:40][C:28]([O:1][CH:2]1[CH2:9][CH2:8][C:5]2([O:7][CH2:6]2)[CH:4]([C:10]2([CH3:18])[CH:12]([CH2:13][CH:14]=[C:15]([CH3:17])[CH3:16])[O:11]2)[CH:3]1[O:19][CH3:20])=[O:29]

参加物

8

反応物 4

HCID 1049PyridineHCID 90863-Amino-1-propanolHCID 821294-Nitrophenyl chloroformateHCID 2190894-(1,5-Dimethyl-1,2-epoxy-4-hexenyl)-5-methoxy-1-oxaspiro(2.5)octan-6-ol

生成物 2

HCID 149888816-(3-Hydroxypropylcarbamoyloxy)-5-methoxy-4-[2-methyl-3-(3-methyl-2-butenyl)oxiranyl]-1-oxaspiro[2,5]octane収率 139.3%HCID 190659795-Methoxy-4-[2-methyl-3-(3-methyl-2-butenyl)oxiranyl]-6-(4-nitrophenoxycarbonyloxy)-1-oxaspiro[2,5]octane

試薬・触媒・溶媒 2

HCID 3283Diethyl Ether溶媒HCID 6344Dichloromethane溶媒

実験手順

To a mixture of 6-hydroxy-5-methoxy-4-[2-methyl-3-(3-methyl-2-butenyl)oxiranyl]-1-oxaspiro[2,5]octane (423 mg) and pyridine (474 mg) in dichloromethane (9 ml) was added portionwise 4-nitrophenyl chloroformate (1.2 g) at ambient temperature. After stirring for 3 hours, 5-methoxy-4-[2-methyl-3-(3-methyl-2-butenyl)oxiranyl]-6-(4-nitrophenoxycarbonyloxy)-1-oxaspiro[2,5]octane was prepared in the reaction mixture. To the mixture 3-amino-1-propanol (2.25 g) was added in one portion. The mixture was stirred for 2 hours at ambient temperature and then diluted with diethyl ether (20 ml). The solution was washed with brine, 1N aqueous hydrochloric acid, 1N agueous sodium hydroxide, and brine successively. The solvent was dried and evaporated in vacuo to give a crude oil, which was purified by column chromatography on silica gel eluted by ethyl acetate to yield 6-(3-hydroxypropylcarbamoyloxy)-5-methoxy-4-[2-methyl-3-(3-methyl-2-butenyl)oxiranyl]-1-oxaspiro[2,5]octane (400 mg) as crystals.

後処理

  1. stirringThe mixture was stirred for 2 hours at ambient temperature
  2. washThe solution was washed with brine, 1N aqueous hydrochloric acid, 1N agueous sodium hydroxide, and brine successively
  3. customThe solvent was dried
  4. customevaporated in vacuo
  5. customto give a crude oil, which
  6. customwas purified by column chromatography on silica gel
  7. washeluted by ethyl acetate

出典と根拠

ORDレコード
ord-1e60c79890264e9ea14ebb655d8c9e41
出典データセット
uspto-grants-1998_06
特許番号
US05767293

反応ノート

読み込み中…