Methyl Acrylate → methyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-(2-(3-methoxy-3-oxopropylamino)ethylcarbamoyl)-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)benzoate

HRID 2405493Notes

Reaction equation

HRID 2405493 reaction equation
[NH2:1][CH2:2][CH2:3][NH:4][C:5]([C@:7]12[CH2:42][CH2:41][C@@H:40]([C:43]([CH3:45])=[CH2:44])[C@@H:8]1[C@@H:9]1[C@@:22]([CH3:25])([CH2:23][CH2:24]2)[C@@:21]2([CH3:26])[C@@H:12]([C@:13]3([CH3:39])[C@@H:18]([CH2:19][CH2:20]2)[C:17]([CH3:28])([CH3:27])[C:16]([C:29]2[CH:38]=[CH:37][C:32]([C:33]([O:35][CH3:36])=[O:34])=[CH:31][CH:30]=2)=[CH:15][CH2:14]3)[CH2:11][CH2:10]1)=[O:6].[C:46]([O:50][CH3:51])(=[O:49])[CH:47]=[CH2:48]>CO>[CH3:51][O:50][C:46](=[O:49])[CH2:47][CH2:48][NH:1][CH2:2][CH2:3][NH:4][C:5]([C@:7]12[CH2:42][CH2:41][C@@H:40]([C:43]([CH3:45])=[CH2:44])[C@@H:8]1[C@@H:9]1[C@@:22]([CH3:25])([CH2:23][CH2:24]2)[C@@:21]2([CH3:26])[C@@H:12]([C@:13]3([CH3:39])[C@@H:18]([CH2:19][CH2:20]2)[C:17]([CH3:27])([CH3:28])[C:16]([C:29]2[CH:30]=[CH:31][C:32]([C:33]([O:35][CH3:36])=[O:34])=[CH:37][CH:38]=2)=[CH:15][CH2:14]3)[CH2:11][CH2:10]1)=[O:6]

Participants

4

Reactant 2

HCID 7294Methyl AcrylateHCID 67776312methyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-(2-aminoethylcarbamoyl)-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)benzoate

Product 1

HCID 67776950methyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-(2-(3-methoxy-3-oxopropylamino)ethylcarbamoyl)-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)benzoate

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
20 °C

Procedure

To a solution of methyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-(2-aminoethylcarbamoyl)-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)benzoate (60 mg, 0.098 mmol) in methanol (1 mL) was added methyl acrylate (25.2 mg, 0.293 mmol), the reaction mixture was stirred at 20° C. for 3 hours. LCMS indicated the formation of desired product. The reaction mixture was quenched with distilled water, extracted with DCM (3×3 mL). All the extracts were combined, dried over sodium sulfate, filtered and concentrated under reduced pressure to provide the desired product as white solid (60 mg, 88%). LCMS: m/e 701.46 (M+H)+, 2.58 min (method 1).

Sources & evidence

ORD record
ord-08058b19839446a5b7da41edf0e392ac
Source dataset
uspto-grants-2014_08
Patent number
US08802661B2

Reaction notes

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