6-bromo-8-cyclopentyl-2-methanesulfinyl-8H-pyrido[2,3-d]pyrimidin-7-one → 4-[6-(6-Bromo-8-cyclopentyl-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-2-ylamino)-pyridin-3-yl]-piperazine-1-carboxylic acid tert-butyl ester
反応式
[Br:1][C:2]1[C:14](=[O:15])[N:13]([CH:16]2[CH2:20][CH2:19][CH2:18][CH2:17]2)[C:5]2[N:6]=[C:7](S(C)=O)[N:8]=[CH:9][C:4]=2[CH:3]=1.[C:21]([O:25][C:26]([N:28]1[CH2:33][CH2:32][N:31]([C:34]2[CH:35]=[N:36][C:37]([NH2:40])=[CH:38][CH:39]=2)[CH2:30][CH2:29]1)=[O:27])([CH3:24])([CH3:23])[CH3:22]>>[C:21]([O:25][C:26]([N:28]1[CH2:33][CH2:32][N:31]([C:34]2[CH:35]=[N:36][C:37]([NH:40][C:7]3[N:8]=[CH:9][C:4]4[CH:3]=[C:2]([Br:1])[C:14](=[O:15])[N:13]([CH:16]5[CH2:20][CH2:19][CH2:18][CH2:17]5)[C:5]=4[N:6]=3)=[CH:38][CH:39]=2)[CH2:30][CH2:29]1)=[O:27])([CH3:24])([CH3:22])[CH3:23]参加物
3
反応物 2
生成物 1
反応条件
- 温度
- 120 °C
実験手順
Under a dry argon atmosphere were combined 6-bromo-8-cyclopentyl-2-methanesulfinyl-8H-pyrido[2,3-d]pyrimidin-7-one (0.78 g, 2.19 mmol, prepared as in Example 107 of WO 98/33798 (incorporated herein by reference)) and 4-(6-amino-pyridin-3-yl)-piperazine-1-carboxylic acid tert-butyl ester (0.67 g, 2.4 mmol) without solvent. The flask was evacuated and heated to 120° C. for 1 hour. The mixture was purified by chromatography on silica gel, eluting with chloroform, to give a yellow foam, 0.288 g. Recrystalization from acetonitrile gave 4-[6-(6-bromo-8-cyclopentyl-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-2-ylamino)-pyridin-3-yl]-piperazine-1-carboxylic acid tert-butyl ester (0.266 g, 21%). MS (APCI); M++1: Calc'd, 570.17, Found, 570.0.