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【结 构 式】

【分子编号】25810

【品名】methyl (2S)-2-([[(1R,5aR,5bS,7aR,9S,11aR,11bS,13aS,13bS)-9-hydroxy-1-isopropenyl-5b,8,8,11a-tetramethylicosahydro-3aH-cyclopenta[a]chrysen-3-yl]carbonyl]amino)propanoate

【CA登记号】

【 分 子 式 】C33H53NO4

【 分 子 量 】527.78816

【元素组成】C 75.1% H 10.12% N 2.65% O 12.13%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(III)

Title compound was obtained by condensation of betulinic acid (I) with L-alanine methyl ester (II) in the presence of DCC and DMAP, followed by ester hydrolysis of the resulting intermediate (III) with LiOH.

1 Chai, H.-B.; Jeong, H.-J.; Park, S.-Y.; Kim, D.S.H.L.; Preparation of amino acid conjugates of betulinic acid with activity against human melanoma. Bioorg Med Chem Lett 1999, 9, 8, 1201.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 25809 (1R,5aR,5bS,7aR,9S,11aR,11bS,13aS,13bS)-9-hydroxy-1-isopropenyl-5b,8,8,11a-tetramethylicosahydro-3aH-cyclopenta[a]chrysene-3a-carboxylic acid C29H46O3 详情 详情
(II) 20694 methyl (2S)-2-aminopropanoate C4H9NO2 详情 详情
(III) 25810 methyl (2S)-2-([[(1R,5aR,5bS,7aR,9S,11aR,11bS,13aS,13bS)-9-hydroxy-1-isopropenyl-5b,8,8,11a-tetramethylicosahydro-3aH-cyclopenta[a]chrysen-3-yl]carbonyl]amino)propanoate C33H53NO4 详情 详情
Extended Information