Hydrochloric Acid → (13E)-(9alpha,11alpha,15S)-6-Oxo-9-hydroxy-11,15-bis-(tetrahydropyran-2-yloxy)prost-13-enoic acid methyl ester

HRID 2058300Notes

Reaction equation

HRID 2058300 reaction equation
[CH3:1][O:2][C:3](=[O:39])[CH2:4][CH2:5][CH2:6][CH:7](Br)[CH:8]1[O:37][C@H:11]2[CH2:12][C@@H:13]([O:30][CH:31]3[CH2:36][CH2:35][CH2:34][CH2:33][O:32]3)[C@H:14](/[CH:15]=[CH:16]/[C@@H:17]([O:23][CH:24]3[CH2:29][CH2:28][CH2:27][CH2:26][O:25]3)[CH2:18][CH2:19][CH2:20][CH2:21][CH3:22])[C@H:10]2[CH2:9]1.C1CCN2C(=NCCC2)CC1.Cl.[OH2:52]>>[CH3:1][O:2][C:3](=[O:39])[CH2:4][CH2:5][CH2:6][CH2:7][C:8](=[O:52])[CH2:9][C@@H:10]1[C@@H:14](/[CH:15]=[CH:16]/[C@@H:17]([O:23][CH:24]2[CH2:29][CH2:28][CH2:27][CH2:26][O:25]2)[CH2:18][CH2:19][CH2:20][CH2:21][CH3:22])[C@H:13]([O:30][CH:31]2[CH2:36][CH2:35][CH2:34][CH2:33][O:32]2)[CH2:12][C@@H:11]1[OH:37]

Participants

5

Reactant 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 86737122(13E)-(5RS,6RS,9alpha,11alpha,15S)-5-Bromo-6,9-epoxy-11,15-bis(tetrahydropyran-2-yloxy)prost-13-enoic acid methyl ester

Product 1

HCID 70575053(13E)-(9alpha,11alpha,15S)-6-Oxo-9-hydroxy-11,15-bis-(tetrahydropyran-2-yloxy)prost-13-enoic acid methyl ester

Conditions

Temperature
0 °C

Procedure

Under an atmosphere of nitrogen, a solution of 970 mg of (13E)-(5RS,6RS-9α,11α,15S)-5-bromo-6,9-epoxy-11,15-bis(tetrahydropyran-2-yloxy)prost-13-enoic acid methyl ester (prepared as described in Reference Example 1) and 2 ml of DBU was stirred at room temperature overnight, and then cooled to 0° C. 6 ml of water was added to the reaction mixture, which was then acidified to pH 1 with 1 N hydrochloric acid at 0° C., and extracted with ethyl acetate. The extract was washed with an aqueous solution of sodium bicarbonate and an aqueous solution of sodium chloride, dried over magnesium sulphate and concentrated under reduced pressure to give the crude title compound having the following physical characteristic:

Workup

  1. extractionextracted with ethyl acetate
  2. washThe extract was washed with an aqueous solution of sodium bicarbonate
  3. dry with materialan aqueous solution of sodium chloride, dried over magnesium sulphate
  4. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-f16edbd2bdc04318a16d37b9299da157
Source dataset
uspto-grants-1980_07
Patent number
US04215142

Reaction notes

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