반응 #172755

ord-9c273b317a1f405d911242db10552f59

반응 조건

상세 조건
See reaction.notes.procedure_details.

후처리

  1. 1
    기타m/e 640.5 (M+H)+, 1.58 min (method 6)

실험 절차

The title compound was prepared in 8% yield from methyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-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 following the same procedure as described for the preparation of 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-(3-(dimethylamino)propanamido)-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)benzoic acid, except (1H-tetrazol-5-yl)-acetic acid was used instead of 3-(dimethylamino)propionic acid hydrochloride in Step 1. LCMS: m/e 640.5 (M+H)+, 1.58 min (method 6). 1H NMR (500 MHz, METHANOL-d4) δ=7.95 (d, J=8.2 Hz, 2H), 7.48 (s, 1H), 7.25 (d, J=8.2 Hz, 2H), 5.33 (dd, J=1.5, 6.1 Hz, 1H), 4.82 (d, J=1.8 Hz, 1H), 4.68 (s, 1H), 4.12-4.00 (m, 2H), 2.79 (dt, J=5.0, 11.2 Hz, 1H), 2.72-2.62 (m, 1H), 2.45-2.35 (m, 1H), 2.19 (dd, J=6.4, 17.1 Hz, 1H), 2.07-1.92 (m, 2H), 1.84 (d, J=11.6 Hz, 1H), 1.77 (br. s., 1H), 1.76 (s, 3H), 1.73 (d, J=7.3 Hz, 1H), 1.66-1.56 (m, 3H), 1.56-1.49 (m, 4H), 1.48-1.27 (m, 6H), 1.23-1.15 (m, 1H), 1.12 (s, 3H), 1.08 (s, 3H), 1.07 (s, 3H), 1.00 (s, 3H), 0.97 (s, 3H).

출처

DOI: 10.6084/m9.figshare.5104873.v1특허: US08846647B2uspto-grants-2014_09