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【结 构 式】

【分子编号】55587

【品名】methyl 7-{[3-(4-morpholinyl)propyl]oxy}-4-(1-piperazinyl)-6-quinazolinyl ether; 6-(methyloxy)-7-{[3-(4-morpholinyl)propyl]oxy}-4-(1-piperazinyl)quinazoline

【CA登记号】

【 分 子 式 】C20H29N5O3

【 分 子 量 】387.48216

【元素组成】C 62% H 7.54% N 18.07% O 12.39%

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:(XIV)

The esterification of vanillic acid (I) with benzyl bromide and K2CO3 in DMF gives the protected benzyl ester (II), which is nitrated with conc. HNO3 in acetic acid to yield 4-benzyloxy-5-methoxy-2-nitrobenzoic acid benzyl ester (III). The reduction of (III) with SnCl2 in ethyl acetate affords the corresponding 2-amino compound (IV), which is cyclized with ammonium formate in DMF at 150 C to provide the quinazolinone (V). The reaction of (V) with refluxing SOCl2 gives the chloro derivative (VI), which is condensed with 1-(tert-butoxycarbonyl)piperazine (VII) by means of DIEA in hot THF to give the 4-piperazinyl quinazoline (VIII). The reductive cleavage of the benzyl protecting group of (VIII) by means of H2 over P/C in ethanol yields the hydroxy compound (IX), which is condensed with 3-(tosyloxy)propyl chloride (X) by means of Cs2CO3 in DMF to afford the corresponding ether (XI). The reaction of the tosyloxy group of (XI) with morpholine (XII) in DMF provides the morpholinyl derivative (XIII), which is Boc deprotected by treatment with HCl in dioxane to give the piperazinyl precursor (XIV). Finally, this compound is condensed with 4-isopropoxyphenyl isocyanate (XV) in DMF to yield the target piperazine carboxamide.

1 Nomoto, Y.; Scarborough, R.M.; Ichimura, M.; Fujiwara, S.; Ide, S.; Oda, S.; Pandey, A.; Tsukuda, E.; Matsuno, K.; Irie, J. (Kyowa Hakko Kogyo Co., Ltd.; Millennium Pharmaceuticals, Inc.); Quinazoline derivs. as kinase inhibitors. WO 0216351 .
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) 17786 4-hydroxy-3-methoxybenzoic acid; Vanillic acid 121-34-6 C8H8O4 详情 详情
(II) 55576 phenylmethyl 3-(methyloxy)-4-[(phenylmethyl)oxy]benzoate C22H20O4 详情 详情
(III) 55577 phenylmethyl 5-(methyloxy)-2-nitro-4-[(phenylmethyl)oxy]benzoate C22H19NO6 详情 详情
(IV) 55578 phenylmethyl 2-amino-5-(methyloxy)-4-[(phenylmethyl)oxy]benzoate C22H21NO4 详情 详情
(V) 31530 7-(benzyloxy)-6-methoxy-4(3H)-quinazolinone C16H14N2O3 详情 详情
(VI) 51531 1-(4-chloro-3-nitrobenzyl)-2-methyl-1H-benzimidazole C15H12ClN3O2 详情 详情
(VII) 13225 N-tert-Butoxycarbonyl piperazine; tert-butyl 1-piperazinecarboxylate;tert-butyl piperazine-1-carboxylate 143238-38-4 C9H18N2O2 详情 详情
(VIII) 55579 1,1-dimethylethyl 4-{6-(methyloxy)-7-[(phenylmethyl)oxy]-4-quinazolinyl}-1-piperazinecarboxylate C25H30N4O4 详情 详情
(IX) 55580 1,1-dimethylethyl 4-[7-hydroxy-6-(methyloxy)-4-quinazolinyl]-1-piperazinecarboxylate C18H24N4O4 详情 详情
(X) 55581 3-Chloropropyl-p-toluenesulfonate C10H13ClO3S 详情 详情
(XI) 55582 1,1-dimethylethyl 4-{6-(methyloxy)-7-[(3-{[(4-methylphenyl)sulfonyl]oxy}propyl)oxy]-4-quinazolinyl}-1-piperazinecarboxylate C28H36N4O7S 详情 详情
(XII) 10388 Morpholine 110-91-8 C4H9NO 详情 详情
(XIII) 55586 1,1-dimethylethyl 4-(6-(methyloxy)-7-{[3-(4-morpholinyl)propyl]oxy}-4-quinazolinyl)-1-piperazinecarboxylate C25H37N5O5 详情 详情
(XIV) 55587 methyl 7-{[3-(4-morpholinyl)propyl]oxy}-4-(1-piperazinyl)-6-quinazolinyl ether; 6-(methyloxy)-7-{[3-(4-morpholinyl)propyl]oxy}-4-(1-piperazinyl)quinazoline C20H29N5O3 详情 详情
(XV) 55585 1-isocyanato-4-[(1-methylethyl)oxy]benzene; 4-[(1-methylethyl)oxy]phenyl isocyanate C10H11NO2 详情 详情
Extended Information