Hydrochloric Acid → methyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-((2-((1R,5 S)-3,6-diazabicyclo[3.1.1]heptan-3-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 338645Notes

Reaction equation

HRID 338645 reaction equation
[CH3:1][O:2][C:3]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[C:12]([CH3:56])([CH3:55])[C@H:13]3[C@:26]([CH3:29])([CH2:27][CH:28]=2)[C@@H:25]2[C@:16]([CH3:54])([C@@:17]4([CH3:53])[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([NH:36][CH2:37][CH2:38][N:39]2[CH2:44][C@@H:43]5[CH2:45][C@@H:41]([N:42]5C(OC(C)(C)C)=O)[CH2:40]2)[CH2:19][CH2:18]4)[CH2:15][CH2:14]3)=[CH:7][CH:6]=1)=[O:4].C(O)(C(F)(F)F)=O.Cl.CCOCC>C(Cl)Cl.ClCCCl>[C@H:41]12[CH2:45][C@H:43]([NH:42]1)[CH2:44][N:39]([CH2:38][CH2:37][NH:36][C@:20]13[CH2:32][CH2:31][C@@H:30]([C:33]([CH3:35])=[CH2:34])[C@@H:21]1[C@@H:22]1[C@@:17]([CH3:53])([CH2:18][CH2:19]3)[C@@:16]3([CH3:54])[C@@H:25]([C@:26]4([CH3:29])[C@@H:13]([CH2:14][CH2:15]3)[C:12]([CH3:55])([CH3:56])[C:11]([C:8]3[CH:9]=[CH:10][C:5]([C:3]([O:2][CH3:1])=[O:4])=[CH:6][CH:7]=3)=[CH:28][CH2:27]4)[CH2:24][CH2:23]1)[CH2:40]2

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 3283Diethyl EtherHCID 6422Trifluoroacetic acidHCID 86701808(1R,5S)-tert-butyl 3-(2-(((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]chrysen-3a-yl)amino)ethyl)-3,6-diazabicyclo[3.1.1]heptane-6-carboxylate

Product 1

HCID 86701807methyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-((2-((1R,5 S)-3,6-diazabicyclo[3.1.1]heptan-3-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 87%

Reagents, catalysts & solvents 2

HCID 111,2-DichloroethaneSolvent2×HCID 6344DichloromethaneSolvent

Procedure

To a solution of (1R,5S)-tert-butyl 3-(2-(((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]chrysen-3a-yl)amino)ethyl)-3,6-diazabicyclo[3.1.1]heptane-6-carboxylate (123 mg, 0.160 mmol) in DCM (3 mL) was added TFA (0.5 mL, 6.49 mmol) and the mixture was stirred at rt for 1 h. The resulting brown reaction mixture was diluted with DCE (3 mL) and concentrated to a light brown foam. The material was dissolved in DCM (2 mL) and DCE (2 mL) and treated with 2N HCl in Et2O (0.5 mL, 1.0 mmol). The resulting slurry was concentrated and dried under vacuum to give the title compound (108.1 mg, 0.139 mmol, 87% yield) as light grey solid. LC/MS: m/e 668.5 (M+H)+, 2.28 min (method 3). 1H NMR (400 MHz, 1:1 CDCl3:METHANOL-d4) δ 7.89 (d, J=8.3 Hz, 2H), 7.18 (d, J=8.6 Hz, 2H), 5.27 (d, J=4.4 Hz, 1H), 4.85 (s, 1H), 4.71 (s, 1H), 4.39 (d, J=5.4 Hz, 2H), 3.88 (s, 3H), 3.76 (br. s., 1H), 3.59 (br. s., 1H), 3.48 (q, J=7.1 Hz, 3H), 3.40-3.33 (m, 2H), 3.07-2.91 (m, 2H), 2.37 (d, J=10.3 Hz, 1H), 2.25-1.89 (m, 7H), 1.83 (d, J=12.0 Hz, 1H), 1.77 (br. s., 1H), 1.73-1.71 (m, 3H), 1.67 (br. s., 1H), 1.65-1.58 (m, 2H), 1.57-1.38 (m, 8H), 1.37-1.29 (m, 1H), 1.27-1.22 (m, 1H), 1.13 (s, 3H), 1.08 (s, 3H), 1.00 (s, 3H), 0.92 (s, 3H), 0.91 (s, 3H).

Workup

  1. concentrationconcentrated to a light brown foam
  2. dissolutionThe material was dissolved in DCM (2 mL)
  3. concentrationThe resulting slurry was concentrated
  4. customdried under vacuum

Sources & evidence

ORD record
ord-5aeb2d559a62465c8ee0d3f2167032a8
Source dataset
uspto-grants-2014_11
Patent number
US08889854B2

Reaction notes

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