1-Pyrrolidineethanol → HCID 53308211, compound

HRID 879974Notes

Reaction equation

HRID 879974 reaction equation
[C:1](=[O:40])([O:30]C1C=CC([N+]([O-])=O)=CC=1)[O:2][C@@H:3]1[CH2:19][C@@H:18]2[C@@:6]([CH3:29])([C@@H:7]3[C@@H:15]([CH2:16][CH2:17]2)[C@:14]2([OH:20])[C@@:10]([CH3:28])([C@@H:11]([C:21]4[CH:22]=[CH:23][C:24](=[O:27])[O:25][CH:26]=4)[CH2:12][CH2:13]2)[CH2:9][CH2:8]3)[CH2:5][CH2:4]1.[N:41]1([CH2:46][CH2:47]O)[CH2:45][CH2:44][CH2:43][CH2:42]1.CCN(C(C)C)C(C)C>C(Cl)Cl.CN(C1C=CN=CC=1)C>[C:1](=[O:40])([O:30][CH2:47][CH2:46][N:41]1[CH2:45][CH2:44][CH2:43][CH2:42]1)[O:2][C@@H:3]1[CH2:19][C@@H:18]2[C@@:6]([CH3:29])([C@@H:7]3[C@@H:15]([CH2:16][CH2:17]2)[C@:14]2([OH:20])[C@@:10]([CH3:28])([C@@H:11]([C:21]4[CH:22]=[CH:23][C:24](=[O:27])[O:25][CH:26]=4)[CH2:12][CH2:13]2)[CH2:9][CH2:8]3)[CH2:5][CH2:4]1

Participants

6

Reactant 3

HCID 762881-PyrrolidineethanolHCID 81531DiisopropylethylamineHCID 58392955HCID 58392955, compound

Product 1

HCID 53308211HCID 53308211, compoundYield 87%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent

Procedure

To a solution of (3S,5R,8R,9S,10S,13R,14S,17R)-14-hydroxy-10,13-dimethyl-17-(2-oxo-2H-pyran-5-yl)hexadecahydro-1H-cyclopenta[a]phenanthren-3-yl 4-nitrophenyl carbonate (24 mg, 0.044 mmol) in CH2Cl2 was added 2-(pyrrolidin-1-yl)ethanol (50.6 mg, 0.44 mmol, 10 eq), DIEA (22.7 mg, 0.176 mmol, 4 eq) and DMAP (19.7 mg, 0.176 mmol, 4 eq). The resultant mixture was stirred at 40° C. for 16 h and then purified via preparative TLC to afford (3S,5R,8R,9S,10S,13R,14S,17R)-14-hydroxy-10,13-dimethyl-17-(2-oxo-2H-pyran-5-yl)hexadecahydro-1H-cyclopenta[a]phenanthren-3-yl 2-(pyrrolidin-1-yl)ethyl carbonate (20 mg, 87.0%) as a white solid. LRMS (M+H+) m/z 528.4. 1H NMR (CD3OD, 400 MHz) δ 8.01 (dd, J=10.0, 2.4 Hz, 1H), 7.44 (m, 1H), 6.29 (d, J=10.0 Hz, 1H), 5.00 (m, 1H), 4.35 (t, J=5.4 Hz, 2H), 3.12 (m, 2H), 2.96 (m, 4H), 2.55-2.60 (m, 1H), 1.08-2.15 (m, 25H), 0.99 (s, 3H), 0.73 (s, 3H).

Workup

  1. custompurified via preparative TLC

Sources & evidence

ORD record
ord-fcab99841b744f05a4ec192636de1fb5
Source dataset
uspto-grants-2015_03
Patent number
US08993550B2

Reaction notes

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