Diisopropylethylamine → methyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-((2-(4-(2-(dimethylamino)-2-oxoacetyl)piperazin-1-yl)ethyl)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)benzoate

HRID 85743Notes

Reaction equation

HRID 85743 reaction equation
[CH3:1][C@:2]12[C@@:19]3([CH3:20])[C@@H:10]([C@:11]4([CH3:33])[C@@H:16]([CH2:17][CH2:18]3)[C:15]([CH3:22])([CH3:21])[C:14]([C:23]3[CH:32]=[CH:31][C:26]([C:27]([O:29][CH3:30])=[O:28])=[CH:25][CH:24]=3)=[CH:13][CH2:12]4)[CH2:9][CH2:8][C@@H:7]1[C@H:6]1[C@H:34]([C:37]([CH3:39])=[CH2:38])[CH2:35][CH2:36][C@:5]1([NH:40][CH2:41][CH2:42][N:43]1[CH2:48][CH2:47][NH:46][CH2:45][CH2:44]1)[CH2:4][CH2:3]2.C(N(C(C)C)C(C)C)C.[CH3:58][N:59]([CH3:65])[C:60](=[O:64])[C:61](O)=[O:62]>ClCCl.O>[CH3:58][N:59]([CH3:65])[C:60](=[O:64])[C:61]([N:46]1[CH2:45][CH2:44][N:43]([CH2:42][CH2:41][NH:40][C@:5]23[CH2:36][CH2:35][C@@H:34]([C:37]([CH3:39])=[CH2:38])[C@@H:6]2[C@@H:7]2[C@@:2]([CH3:1])([CH2:3][CH2:4]3)[C@@:19]3([CH3:20])[C@@H:10]([C@:11]4([CH3:33])[C@@H:16]([CH2:17][CH2:18]3)[C:15]([CH3:21])([CH3:22])[C:14]([C:23]3[CH:32]=[CH:31][C:26]([C:27]([O:29][CH3:30])=[O:28])=[CH:25][CH:24]=3)=[CH:13][CH2:12]4)[CH2:9][CH2:8]2)[CH2:48][CH2:47]1)=[O:62]

Participants

6

Reactant 3

HCID 81531DiisopropylethylamineHCID 2760995N,N-Dimethyloxamic acidHCID 86676640methyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-5a,5b,8,8,11a-pentamethyl-3a-((2-(piperazin-1-yl)ethyl)amino)-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 86676646methyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-((2-(4-(2-(dimethylamino)-2-oxoacetyl)piperazin-1-yl)ethyl)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)benzoateYield 70%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6344DichloromethaneSolvent

Conditions

Temperature
20 °C

Procedure

A mixture of methyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-5a,5b,8,8,11a-pentamethyl-3a-((2-(piperazin-1-yl)ethyl)amino)-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 (50 mg, 0.076 mmol), 2-(1H-benzo[d][1,2,3]triazol-1-yl)-1,1,3,3-tetramethylisouronium tetrafluoroborate (29.4 mg, 0.091 mmol), N-ethyl-N-isopropylpropan-2-amine (11.82 mg, 0.091 mmol) and 2-(dimethylamino)-2-oxoacetic acid (26.8 mg, 0.229 mmol) in dichloromethane (2 mL) was stirred at 20° C. for 2 hours. The reaction mixture was diluted with distilled water (5 mL), extracted with ethyl acetate (3×4 mL), the extracts were combined, dried over sodium sulfate, filtered and concentrated under reduced pressure to provide the desired product as a yellow oil (40 mg, 70%). LCMS: m/e 755.68 (M+H)+, 2.42 min (method 11).

Workup

  1. extractionextracted with ethyl acetate (3×4 mL)
  2. dry with materialdried over sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-217b02c3cf4b41e4ac64551778f6da9c
Source dataset
uspto-grants-2014_09
Patent number
US08846647B2

Reaction notes

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