Sodium Carbonate Monohydrate → benzyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-amino-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)-1-hydroxycyclohex-3-enecarboxylate

HRID 1400984ノート

反応式

HRID 1400984 の反応式
[OH:1][C:2]1([C:17]([O:19][CH2:20][C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)=[O:18])[CH2:7][CH2:6][C:5](B2OC(C)(C)C(C)(C)O2)=[CH:4][CH2:3]1.FC(F)(F)S(O[C:33]1[C:34]([CH3:62])([CH3:61])[C@H:35]2[C@:48]([CH3:51])([CH2:49][CH:50]=1)[C@@H:47]1[C@:38]([CH3:60])([C@@:39]3([CH3:59])[C@H:44]([CH2:45][CH2:46]1)[C@H:43]1[C@H:52]([C:55]([CH3:57])=[CH2:56])[CH2:53][CH2:54][C@:42]1([NH2:58])[CH2:41][CH2:40]3)[CH2:37][CH2:36]2)(=O)=O.O.C(=O)([O-])[O-].[Na+].[Na+]>O1CCOCC1.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[NH2:58][C@:42]12[CH2:54][CH2:53][C@@H:52]([C:55]([CH3:57])=[CH2:56])[C@@H:43]1[C@@H:44]1[C@@:39]([CH3:59])([CH2:40][CH2:41]2)[C@@:38]2([CH3:60])[C@@H:47]([C@:48]3([CH3:51])[C@@H:35]([CH2:36][CH2:37]2)[C:34]([CH3:61])([CH3:62])[C:33]([C:5]2[CH2:6][CH2:7][C:2]([OH:1])([C:17]([O:19][CH2:20][C:21]4[CH:22]=[CH:23][CH:24]=[CH:25][CH:26]=4)=[O:18])[CH2:3][CH:4]=2)=[CH:50][CH2:49]3)[CH2:46][CH2:45]1

参加物

7

反応物 3

HCID 2735133Sodium Carbonate MonohydrateHCID 71698571(1R,3aS,5aR,5bR,7aR,11aR,11bR,13aR,13bR)-3a-amino-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 trifluoromethanesulfonateHCID 86692339Benzyl 1-hydroxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)cyclohex-3-enecarboxylate

生成物 1

HCID 86692338benzyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-amino-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)-1-hydroxycyclohex-3-enecarboxylate収率 56.5%

試薬・触媒・溶媒 3

HCID 178418397HCID 178418397、化合物触媒HCID 962Water溶媒HCID 312751,4-Dioxane溶媒

反応条件

温度
85 °C

実験手順

A flask containing benzyl 1-hydroxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)cyclohex-3-enecarboxylate (0.113 g, 0.221 mmol) and (1R,3aS,5aR,5bR,7aR,11aR,11bR,13 aR,13bR)-3a-amino-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 trifluoromethanesulfonate (0.082 g, 0.147 mmol) was diluted with 1,4-dioxane (1 mL) and water (0.25 mL). To the mixture was added sodium carbonate hydrate (0.075 g, 0.605 mmol) and the mixture was degassed with nitrogen for five minutes. To the mixture was added palladium tetrakis (5.10 mg, 4.41 mmol) then the flask was purged then refilled with nitrogen three times. The mixture was heated to 85° C. for 4 h then was cooled to rt and was purified by flash chromatography using a 20-80% ethyl acetate in hexanes gradient and a 25 g silica gel column. The fractions containing the expected product were combined and concentrated under reduced pressure to give benzyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-amino-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)-1-hydroxycyclohex-3-enecarboxylate (0.053 g, 0.083 mmol, 56.3% yield) as an off-white foam. LCMS: m/e 640.6 (M+H)+, 1.91 min (method 1).

後処理

  1. customthe mixture was degassed with nitrogen for five minutes
  2. customthe flask was purged
  3. additionthen refilled with nitrogen three times
  4. temperaturethen was cooled to rt
  5. customwas purified by flash chromatography
  6. additionThe fractions containing the expected product
  7. concentrationconcentrated under reduced pressure

出典と根拠

ORDレコード
ord-6d1c688703e6492bb94aaa28258563ee
出典データセット
uspto-grants-2014_12
特許番号
US08906889B2

反応ノート

読み込み中…