反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
PROCEDURE
实验过程
The title compound was prepared in 14% 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 2-(2-oxopyrrolidin-1-yl)acetic acid was used instead of 3-(dimethylamino)propionic acid hydrochloride in Step 1. LCMS: m/e 655.5 (M+H)+, 1.99 min (method 6). 1H NMR (500 MHz, 1:1 CDCl3:MeOD) δ=7.92 (d, J=7.9 Hz, 2H), 7.20 (d, J=7.9 Hz, 2H), 6.77 (s, 1H), 5.29 (d, J=4.7 Hz, 1H), 4.75 (d, J=1.3 Hz, 1H), 4.63 (s, 1H), 3.97-3.85 (m, 2H), 3.58-3.51 (m, 2H), 2.65-2.54 (m, 2H), 2.47 (t, J=8.0 Hz, 2H), 2.38 (dd, J=8.4, 12.5 Hz, 1H), 2.17-2.07 (m, 3H), 1.95-1.85 (m, 1H), 1.83-1.74 (m, 2H), 1.73 (br. s., 1H), 1.70 (s, 3H), 1.68-1.62 (m, 1H), 1.60-1.43 (m, 8H), 1.42-1.22 (m, 6H), 1.13 (br. s., 1H), 1.09 (s, 3H), 1.01 (s, 6H), 0.94 (s, 3H), 0.93 (s, 3H).
WORKUP
后处理
- customm/e 655.5 (M+H)+, 1.99 min (method 6)