10376-50-8 → HCID 50923384, compound

HRID 2179802Notes

Reaction equation

HRID 2179802 reaction equation
[C:1]([O:4][C@H:5]1[CH2:22][CH2:21][C@@:20]2([CH3:23])[C@@H:7]([CH2:8][CH2:9][C@:10]3([CH3:34])[C@@H:19]2[CH2:18][CH2:17][C@H:16]2[C@@:11]3([CH3:33])[CH2:12][CH2:13][C@@:14]3([C:30](O)=[O:31])[CH2:26][CH2:25][C@@H:24]([C:27]([CH3:29])=[CH2:28])[C@@H:15]32)[C:6]1([CH3:36])[CH3:35])(=[O:3])[CH3:2].[NH2:37][C@@H:38]1[CH2:41][C@H:40]([C:42]([N:44]2[CH2:49][CH2:48][CH2:47][CH2:46][CH2:45]2)=[O:43])[C:39]1([CH3:51])[CH3:50]>C(Cl)Cl>[C:1]([O:4][C@H:5]1[CH2:22][CH2:21][C@@:20]2([CH3:23])[C@@H:7]([CH2:8][CH2:9][C@:10]3([CH3:34])[C@@H:19]2[CH2:18][CH2:17][C@H:16]2[C@@:11]3([CH3:33])[CH2:12][CH2:13][C@@:14]3([C:30](=[O:31])[NH:37][C@@H:38]4[CH2:41][C@H:40]([C:42]([N:44]5[CH2:49][CH2:48][CH2:47][CH2:46][CH2:45]5)=[O:43])[C:39]4([CH3:51])[CH3:50])[CH2:26][CH2:25][C@@H:24]([C:27]([CH3:29])=[CH2:28])[C@@H:15]32)[C:6]1([CH3:36])[CH3:35])(=[O:3])[CH3:2]

Participants

4

Reactant 2

HCID 1030053410376-50-8HCID 58110976HCID 58110976, compound

Product 1

HCID 50923384HCID 50923384, compoundYield 71.9%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent3×

Procedure

To a stirred solution of (1R,3aS,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bR)-9-acetoxy-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)icosahydro-1H-cyclopenta[a]chrysene-3a-carboxylic acid (0.410 g, 0.823 mmol) (Prepared as described in J. Med. Chem. 2009. 52, 3248-3258) in DCM (1 ml) Oxolyl chloride (0.71 ml, 8.232 mmol) in DCM (3.42 ml) was added at 0° C. and stirred at room temperature for about 3 hours and completion of the reaction was monitored by TLC, then the solvent was evaporated under nitrogen atmosphere and dissolved in DCM (4 ml), which was added to a stirred solution of ((1S,3R)-3-amino-2,2-dimethylcyclobutyl)(piperidin-1-yl)methanone (step 2, 0.328 g, 1.56 mmol) at 0° C. and allowed to stir at room temperature for about 16 hours. After completion of the reaction (monitored by TLC), the reaction mixture was diluted with DCM and washed with aqueous 1N HCl, then washed with water and brine, and dried over Na2SO4 then the solvent was evaporated and purified by silica gel column (100-200 mesh, elution 15% EtOAc in hexane) to afford the title compound as an off white solid. Wt: 0.400 g; Yield: 71.9%; 1H NMR (300 MHz, CDCl3): δ 5.85 (d, 1H), 4.72 (s, 1H), 4.58 (s, 1H), 4.50-4.41 (m, 1H), 4.18-4.07 (m, 1H), 3.78-3.67 (m, 1H), 2.50-2.30 (m, 3H), 3.19-3.07 (m, 1H), 2.88 (t, 1H, J=8.1 Hz), 2.54-2.13 (m, 3H), 2.04 (s, 3H), 2.00-1.86 (m, 2H), 1.80-1.11 (m, 33H), 0.95, 0.93, 0.87, 0.83, 0.81 (s, 18H); Mass: [M+H]+ 691 (100%), [M+Na]+ 713 (25%); IR (KBr, cm−1): 3395, 2943, 2864, 1736, 1734, 1624, 1444, 1370, 1248, 1192, 1154, 1024, 979, 884; M.R: 140.2° C.-145.8° C.

Workup

  1. customthe solvent was evaporated under nitrogen atmosphere
  2. dissolutiondissolved in DCM (4 ml)
  3. stirringto stir at room temperature for about 16 hours
  4. customAfter completion of the reaction (monitored by TLC)
  5. washwashed with aqueous 1N HCl
  6. washwashed with water and brine
  7. dry with materialdried over Na2SO4
  8. customthe solvent was evaporated
  9. custompurified by silica gel column (100-200 mesh, elution 15% EtOAc in hexane)

Sources & evidence

ORD record
ord-49b3a1b01e8e470abd1f8137f5c31d85
Source dataset
uspto-grants-2015_06
Patent number
US09067966B2

Reaction notes

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