1-Pyrrolidineethanol → HCID 53308211, compound

Participants

Reaction Steps

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).

Provenance & Evidence