Water → Budesonide hexadecylcarbonate

HRID 851853ノート

反応式

HRID 851853 の反応式
[CH3:1][CH2:2][CH2:3][CH:4]1[O:24][C@:23]2([C:25]([CH2:27][OH:28])=[O:26])[C@@H:6]([CH2:7][C@@H:8]3[C@:22]2([CH3:29])[CH2:21][C@H:20]([OH:30])[C@H:19]2[C@H:9]3[CH2:10][CH2:11][C:12]3[C@:18]2([CH3:31])[CH:17]=[CH:16][C:14](=[O:15])[CH:13]=3)[O:5]1.ClC([O-])=[O:34].CCN(CC)CC.O>C(Cl)Cl>[CH3:1][CH2:2][CH2:3][CH:4]1[O:24][C@:23]2([C:25]([CH2:27][OH:28])=[O:26])[C@@H:6]([CH2:7][C@@H:8]3[C@:22]2([CH3:29])[CH2:21][C@H:20]([OH:30])[C@H:19]2[C@H:9]3[CH2:10][CH2:11][C:12]3[C@:18]2([CH3:31])[CH:17]=[CH:16][C:14](=[O:15])[CH:13]=3)[O:5]1.[CH2:23]([O:24][C:4](=[O:5])[O-:34])[CH2:6][CH2:7][CH2:8][CH2:22][CH2:21][CH2:20][CH2:19][CH2:9][CH2:10][CH2:11][CH2:12][CH2:18][CH2:17][CH2:16][CH3:14]

参加物

6

反応物 4

HCID 962WaterHCID 8471TriethylamineHCID 5281004Budesonide2 回HCID 21226386Carbonochloridate

生成物 1

HCID 86589554Budesonide hexadecylcarbonate

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒2 回

実験手順

To the solution of budesonide (431 mg, 1.0 mmol) in DCM (4.5 mL) was added heaxdecyl chloroformate (655 μL, 2.0 mmol) and Et3N (512 μL, 3.7 mmol) at room temperature. After reaction mixture was stirred at room temperature over night, it was poured into water (20 mL) and DCM (10 mL); the aqueous phase was extracted with DCM (10 mL). The combined organic phases were washed with water (10 mL) and brine (10 mL), dried over Na2SO4, filtered, and concentrated in vacuo to provide crude budesonide hexadecylcarbonate. The product was purified by chromatography, eluted with Hexane:AcOEt=9:1 to 3:1 to provide 432 mg of 1:1 mixture of epimers (originated from budesonide) (99.38 area % purity on HPLC). 1H NMR (CDCl3) δ 0.80-2.40 (m, 53H), 2.56 (dt, 1H, 13.1 and 4.6 Hz), 4.30 (t, 2H, 6.7 Hz), 4.5-5.2 (m, 7H), 6.00 (s, 1H), 6.26 (d, 1H, 10.1 Hz), 7.3 (d, 1H, 10.1 Hz). 13C NMR (CDCl3) δ 14.16, 14.18, 14.34, 17.10, 17.27, 17.39, 17.71, 21.21, 22.88, 25.81, 28.79, 29.41, 29.56, 29.70, 29.76, 29.87, 30.54, 31.19, 32.11, 33.08, 33.59, 34.23, 35.19, 37.28, 40.68, 40.98, 44.37, 46.08, 47.52, 50.00, 53.07, 55.39, 55.49, 68.98, 69.73, 69.83, 69.95, 70.04, 82.10, 83.38, 97.71, 98.58, 104.70, 108.51, 122.57, 127.91, 155.08, 156.85, 170.48, 170.59, 186.84, 186.88, 202.10 and 203.38. Mass spectrum (m/e) 699 (M+).

後処理

  1. customAfter reaction mixture
  2. extractionthe aqueous phase was extracted with DCM (10 mL)
  3. washThe combined organic phases were washed with water (10 mL) and brine (10 mL)
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customto provide crude budesonide hexadecylcarbonate
  8. customThe product was purified by chromatography
  9. washeluted with Hexane
  10. customAcOEt=9:1 to 3:1 to provide

出典と根拠

ORDレコード
ord-ce7bce7a2dd84140a3f94092463c5278
出典データセット
uspto-grants-2007_08
特許番号
US07253156B2

反応ノート

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