ホームMCPワークベンチSkills
ホームワークベンチ通知マイページ
llms.txt · MCPガイドプライバシーポリシー · 利用規約 · サポートv1.8.0
  1. ホーム
  2. /反応

Water → 5-[(1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-(hydroxymethyl)-1-isopropenyl-5a,5b,8,8,11a-pentamethyl-1,2,3,4,5,6,7,7a,11,11b,12,13,13a,13b-tetradecahydrocyclopenta[a]chrysen-9-yl]isoxazole-3-carboxylic acid

HRID 406889
ノート
印刷プレビュー

反応式

HRID 406889 の反応式
C([O:9][CH2:10][C@:11]12[CH2:46][CH2:45][C@@H:44]([C:47]([CH3:49])=[CH2:48])[C@@H:12]1[C@@H:13]1[C@@:26]([CH3:29])([CH2:27][CH2:28]2)[C@@:25]2([CH3:30])[C@@H:16]([C@:17]3([CH3:43])[C@@H:22]([CH2:23][CH2:24]2)[C:21]([CH3:32])([CH3:31])[C:20]([C:33]2[O:37][N:36]=[C:35]([C:38]([O:40]CC)=[O:39])[CH:34]=2)=[CH:19][CH2:18]3)[CH2:15][CH2:14]1)(=O)C1C=CC=CC=1.O.O.[OH-].[Li+]>O1CCOCC1.Cl>[OH:9][CH2:10][C@:11]12[CH2:46][CH2:45][C@@H:44]([C:47]([CH3:49])=[CH2:48])[C@@H:12]1[C@@H:13]1[C@@:26]([CH3:29])([CH2:27][CH2:28]2)[C@@:25]2([CH3:30])[C@@H:16]([C@:17]3([CH3:43])[C@@H:22]([CH2:23][CH2:24]2)[C:21]([CH3:31])([CH3:32])[C:20]([C:33]2[O:37][N:36]=[C:35]([C:38]([OH:40])=[O:39])[CH:34]=2)=[CH:19][CH2:18]3)[CH2:15][CH2:14]1
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

6

反応物 3

HCID 962WaterHCID 168937Lithium hydroxide, monohydrateHCID 67777149Ethyl 5-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-(benzoyloxymethyl)-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)isoxazole-3-carboxylate

生成物 1

HCID 54760884
5-[(1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-(hydroxymethyl)-1-isopropenyl-5a,5b,8,8,11a-pentamethyl-1,2,3,4,5,6,7,7a,11,11b,12,13,13a,13b-tetradecahydrocyclopenta[a]chrysen-9-yl]isoxazole-3-carboxylic acid
収率 32,590.9%

試薬・触媒・溶媒 2

HCID 313Hydrochloric Acid溶媒HCID 312751,4-Dioxane溶媒

反応条件

温度
75 °C

実験手順

To a solution of ethyl 5-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-(benzoyloxymethyl)-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)isoxazole-3-carboxylate (0.015 g, 0.022 mmol) in 1,4-Dioxane (2 mL) was added Water (0.5 mL) and Lithium hydroxide monohydrate (0.17 g, 4.05 mmol). The mixture was heated to 75° C. After 3.5 h the mixture was cooled to rt and was diluted with 1N HCl (7 mL) then was extracted with dichloromethane (4×7 mL). The combined organic layers were dried with Na2SO4. The drying agent was removed by filtration and the filtrate was concentrated under reduced pressure. The residue was purified by crystallization using dioxane, water, and methanol. The expected product, 5-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-(hydroxymethyl)-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)isoxazole-3-carboxylic acid (4 mg, 7.17 mmol, 31.9% yield), was isolated as a white solid. LCMS: m/e 536.35 (M+H)+, 2.03 min (method 7). 1H NMR (500 MHz, Pyr) δ ppm 0.87 (s, 3H), 0.96-1.88 (m, 20H), 1.04 (s, 3H), 1.05 (s, 3H), 1.17 (s, 3H), 1.21 (s, 3H), 1.81 (s, 3H), 2.14-2.27 (m, 1H), 2.39-2.53 (m, 1H), 2.59-2.74 (m, 1H), 3.70 (d, J=10.99 Hz, 1H), 4.12 (d, J=10.99 Hz, 1H), 4.80 (br. s., 1H), 4.94 (s, 1H), 6.40 (d, J=6.41 Hz, 1H), 7.08 (s, 1H).

後処理

  1. temperatureAfter 3.5 h the mixture was cooled to rt
  2. extractionthen was extracted with dichloromethane (4×7 mL)
  3. dry with materialThe combined organic layers were dried with Na2SO4
  4. customThe drying agent was removed by filtration
  5. concentrationthe filtrate was concentrated under reduced pressure
  6. customThe residue was purified by crystallization

出典と根拠

ORDレコード
ord-287a6ae7e9884b1a9255a42709c1da5d
出典データセット
uspto-grants-2014_06
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08754068B2

反応ノート

読み込み中…

このページの内容参加物反応条件実験手順後処理出典と根拠反応ノート