Sodium Hydroxide → HCID 67776014, compound

HRID 2405517Notes

Reaction equation

HRID 2405517 reaction equation
C[O:2][C:3]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[C:12]([CH3:55])([CH3:54])[C@H:13]3[C@:26]([CH3:29])([CH2:27][CH:28]=2)[C@@H:25]2[C@:16]([CH3:53])([C@@:17]4([CH3:52])[C@H:22]([CH2:23][CH2:24]2)[C@H:21]2[C@H:30]([C:33]([CH3:35])=[CH2:34])[CH2:31][CH2:32][C@:20]2([C:36]([NH:38][CH2:39][CH2:40][C:41]([N:43]2[CH2:47][CH2:46][CH2:45][CH:44]2[C:48]([O:50]C)=[O:49])=[O:42])=[O:37])[CH2:19][CH2:18]4)[CH2:15][CH2:14]3)=[CH:7][CH:6]=1)=[O:4].[OH-].[Na+]>O1CCOCC1.Cl>[C:3]([C:5]1[CH:6]=[CH:7][C:8]([C:11]2[C:12]([CH3:55])([CH3:54])[C@H:13]3[C@:26]([CH3:29])([CH2:27][CH:28]=2)[C@@H:25]2[C@:16]([CH3:53])([C@@:17]4([CH3:52])[C@H:22]([CH2:23][CH2:24]2)[C@H:21]2[C@H:30]([C:33]([CH3:35])=[CH2:34])[CH2:31][CH2:32][C@:20]2([C:36]([NH:38][CH2:39][CH2:40][C:41]([N:43]2[CH2:47][CH2:46][CH2:45][CH:44]2[C:48]([OH:50])=[O:49])=[O:42])=[O:37])[CH2:19][CH2:18]4)[CH2:15][CH2:14]3)=[CH:9][CH:10]=1)([OH:4])=[O:2]

Participants

5

Reactant 2

HCID 14798Sodium HydroxideHCID 67775410HCID 67775410, compound

Product 1

HCID 67776014HCID 67776014, compoundYield 45.8%

Reagents, catalysts & solvents 2

HCID 313Hydrochloric AcidSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
85 °C

Procedure

To a solution of methyl 1-(3-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-9-(4-(methoxycarbonyl)phenyl)-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]chrysene-3a-carboxamido)propanoyl)pyrrolidine-2-carboxylate (63 mg, 0.083 mmol) in Dioxane (2 mL) was added NaOH (1N) (0.417 mL, 0.417 mmol). The mixture was heated to 85° C. for 15 h, then cooled to rt and was diluted with 5 mL of 1N HCl and was extracted with dichloromethane (4×5 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 Biotage flash chromatography using a 0-10% MeOH in DCM gradient with 0.1% HOAc then by prep HPLC. The fractions containing the expected product were combined and concentrated under reduced pressure to give 1-(3-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-9-(4-carboxyphenyl)-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]chrysene-3a-carboxamido)propanoyl)pyrrolidine-2-carboxylic acid (27.3 mg, 0.038 mmol, 45.0% yield) as a white solid. LCMS: m/e 726.4 (M−H)−, 2.36 min (method 4). 1H NMR (500 MHz, Acetic) δ ppm 8.03 (d, J=8.24 Hz, 2H), 7.30 (d, J=8.24 Hz, 2H), 5.37 (d, J=4.58 Hz, 1H), 4.78 (s, 1H), 4.64 (s, 1H), 4.57 (dd, J=8.70, 3.51 Hz, 1H), 3.52-3.75 (m, 4H), 3.09-3.20 (m, J=18.43, 11.08, 11.08, 4.27 Hz, 1H), 2.68-2.82 (m, 2H), 2.58 (td, J=12.36, 3.05 Hz, 1H), 1.73 (s, 3H), 1.07 (s, 6H), 1.05 (s, 3H), 1.03-2.53 (m, 25H), 1.01 (s, 3H), 0.99 (s, 3H).

Workup

  1. temperaturecooled to rt
  2. extractionwas extracted with dichloromethane (4×5 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 Biotage flash chromatography
  7. additionThe fractions containing the expected product
  8. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-3a56a38fdfef40b79c195460a9410bfc
Source dataset
uspto-grants-2014_08
Patent number
US08802661B2

Reaction notes

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