Water → Methyl 2,5,7-trihydroxy-2-methyl-6,11-dioxo-4-((2,3,6-trideoxy-3-(dimethylamino)hexopyranosyl)oxy)-1,2,3,4,6,11-hexahydrotetracene-1-carboxylate

HRID 435457ノート

反応式

HRID 435457 の反応式
[CH3:1][C@@H:2]1[O:7][C@@H:6]([O:8][C@@H:9]2[C:14]3[C:15]([OH:30])=[C:16]4[C:23](=[O:24])[C:22]5[C:25]([OH:29])=[CH:26][CH:27]=[CH:28][C:21]=5[C:19](=[O:20])[C:17]4=[CH:18][C:13]=3[C@@H:12]([C:31]([O:33][CH3:34])=[O:32])[C@@:11]([OH:36])([CH3:35])[CH2:10]2)[CH2:5][C@H:4]([N:37]([CH3:39])[CH3:38])[C@@H:3]1[O:40][C@@H]1O[C@@H](C)[C@@H](O[C@@H]2O[C@@H](C)C(=O)CC2)[C@@H](O)C1.Cl.CO.[OH-].[Na+].O>CC(C)=O.CO>[CH3:1][CH:2]1[O:7][CH:6]([O:8][CH:9]2[C:14]3[C:15]([OH:30])=[C:16]4[C:23](=[O:24])[C:22]5[C:25]([OH:29])=[CH:26][CH:27]=[CH:28][C:21]=5[C:19](=[O:20])[C:17]4=[CH:18][C:13]=3[CH:12]([C:31]([O:33][CH3:34])=[O:32])[C:11]([OH:36])([CH3:35])[CH2:10]2)[CH2:5][CH:4]([N:37]([CH3:39])[CH3:38])[CH:3]1[OH:40]

参加物

7

反応物 4

HCID 962WaterHCID 14798Sodium HydroxideHCID 155838Methyl 2,5,7-trihydroxy-2-methyl-6,11-dioxo-4-({2,3,6-trideoxy-4-O-[2,6-dideoxy-4-O-(6-methyl-5-oxooxan-2-yl)hexopyranosyl]-3-(dimethylamino)hexopyranosyl}oxy)-1,2,3,4,6,11-hexahydrotetracene-1-carboxylateHCID 21893726Hydrochloride methanol

生成物 1

HCID 174252Methyl 2,5,7-trihydroxy-2-methyl-6,11-dioxo-4-((2,3,6-trideoxy-3-(dimethylamino)hexopyranosyl)oxy)-1,2,3,4,6,11-hexahydrotetracene-1-carboxylate収率 61.8%

試薬・触媒・溶媒 2

HCID 180Acetone溶媒HCID 887Methanol溶媒

実験手順

To a solution of 100 mg of auramycin A in 20 ml of acetone and 1 ml of methanol was added 1 ml of 0.2 N hydrochloric acid-methanol with stirring and reacted at room temperature for 40 minutes. The reaction mixture was neutralised by dilute sodium hydroxide solution and 20 ml of water was added and extracted with 20 ml of chloroform twice. The extracts were combined and concentrated to a small volume in vacuo. The concentrate was chromatographed by a column packed with silica gel (chloroform:methanol, 95:5). The fractions containing auramycin D were concentrated in vacuo to give 43 mg of auramycin D.

後処理

  1. customreacted at room temperature for 40 minutes
  2. additionwas added
  3. extractionextracted with 20 ml of chloroform twice
  4. concentrationconcentrated to a small volume in vacuo
  5. customThe concentrate was chromatographed by a column
  6. additionThe fractions containing auramycin D
  7. concentrationwere concentrated in vacuo

出典と根拠

ORDレコード
ord-a87aa935df3d4311a30a6f0f46bb28a1
出典データセット
uspto-grants-1983_08
特許番号
US04401812

反応ノート

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