3-(4-bromo-2-fluorobenzyl)-7-chloro-2,4(1H,3H)-quinazolinedione -Drug Synthesis Database

【结构式】

【分子编号】19562

【品名】3-(4-bromo-2-fluorobenzyl)-7-chloro-2,4(1H,3H)-quinazolinedione

【CA登记号】

【分子式】C₁₅H₉BrClFN₂O₂

【分子量】383.6038432

【元素组成】C 46.97% H 2.36% Br 20.83% Cl 9.24% F 4.95% N 7.3% O 8.34%

与该中间体有关的原料药合成路线共 2 条

合成路线1 合成路线2

合成路线1

该中间体在本合成路线中的序号：(V)

1) The cyclization of 2-(benzyloxycarbonylamino)-4-chlorobenzoic acid (I) by means of PBr3 in refluxing ethyl ether gives 7-chloro-2H-3,1-benzoxazine-2,4(1H)-dione (II), which is condensed with 4-bromo-2-fluorobenzylamine (III) in refluxing THF yielding 2-amino-N-(4-bromo-2-fluorobenzyl)-4-chloro-benzamide (IV). The cyclization of (IV) with carbonyldiimidazole (CDI) in refluxing dioxane affords 3-(4-bromo-2-fluorobenzyl)-7-chloro-1,2,3,4-tetrahydroquinazoline-2,4-dione (V), which is alkylated with ethyl bromoacetate (VI) by means of NaH in DMF to give ethyl 3-(4-bromo-2-fluorobenzyl)-7-chloro-2,4-dioxo-1,2,3,4-tetrahydroquinazoline-1-acetate (VII). Finally, this compound is hydrolyzed with NaOH in refluxing methanol.

参考文献中间体

合成目标

【1】 Hashimoto, M.; Oku, T.; Ito, Y.; Namiki, T.; Sawada, K.; Kasahara, C.; Baba, Y. (Fujisawa Pharmaceutical Co., Ltd.); New quinazoline derivs., process for their production and pharmaceutical compsns. comprising them. EP 0218999; JP 1987096476; JP 1989125322; JP 1989131164; US 4734419; US 4883800 .
【2】 Prous, J.; Castaner, J.; FR-74366. Drugs Fut 1989, 14, 1, 26.

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)	19558	2-[[(benzyloxy)carbonyl]amino]-4-chlorobenzoic acid		C₁₅H₁₂ClNO₄	详情	详情
(II)	19559	4-Chloroisatoic anhydride; 7-chloro-2H-3,1-benzoxazine-2,4(1H)-dione		C₈H₄ClNO₃	详情	详情
(III)	19560	(4-bromo-2-fluorophenyl)methanamine; 4-bromo-2-fluorobenzylamine	112734-22-2	C₇H₇BrFN	详情	详情
(IV)	19561	2-amino-N-(4-bromo-2-fluorobenzyl)-4-chlorobenzamide		C₁₄H₁₁BrClFN₂O	详情	详情
(V)	19562	3-(4-bromo-2-fluorobenzyl)-7-chloro-2,4(1H,3H)-quinazolinedione		C₁₅H₉BrClFN₂O₂	详情	详情
(VI)	16640	Ethyl 2-bromoacetate; Ethyl bromoacetate	105-36-2	C₄H₇BrO₂	详情	详情
(VII)	19564	ethyl 2-[3-(4-bromo-2-fluorobenzyl)-7-chloro-2,4-dioxo-3,4-dihydro-1(2H)-quinazolinyl]acetate		C₁₉H₁₅BrClFN₂O₄	详情	详情

合成路线2

该中间体在本合成路线中的序号：(V)

2) The condensation of 4-chloro-2-nitrobenzoic acid (VIII) with benzylamine (III) by means of CDI in THF gives the corresponding amide (IX), which is reduced with Fe in acetic acid to the 2-aminobenzamide (IV). The cyclization of (IV) with carbonyldiimidazole (CDI) in refluxing dioxane affords 3-(4-bromo-2-fluorobenzyl)-7-chloro-1,2,3,4-tetrahydroquinazoline-2,4-dione (V), which is alkylated with ethyl bromoacetate (VI) by means of NaH in DMF to give ethyl 3-(4-bromo-2-fluorobenzyl)-7-chloro-2,4-dioxo-1,2,3,4-tetrahydroquinazoline-1-acetate (VII). Finally, this compound is hydrolyzed with NaOH in refluxing methanol.

参考文献中间体

合成目标

【1】 Hashimoto, M.; Oku, T.; Ito, Y.; Namiki, T.; Sawada, K.; Kasahara, C.; Baba, Y. (Fujisawa Pharmaceutical Co., Ltd.); New quinazoline derivs., process for their production and pharmaceutical compsns. comprising them. EP 0218999; JP 1987096476; JP 1989125322; JP 1989131164; US 4734419; US 4883800 .
【2】 Prous, J.; Castaner, J.; FR-74366. Drugs Fut 1989, 14, 1, 26.

中间体序号	中间体编号	品名	CAS号	分子式	供应商	用于合成
(III)	19560	(4-bromo-2-fluorophenyl)methanamine; 4-bromo-2-fluorobenzylamine	112734-22-2	C₇H₇BrFN	详情	详情
(IV)	19561	2-amino-N-(4-bromo-2-fluorobenzyl)-4-chlorobenzamide		C₁₄H₁₁BrClFN₂O	详情	详情
(V)	19562	3-(4-bromo-2-fluorobenzyl)-7-chloro-2,4(1H,3H)-quinazolinedione		C₁₅H₉BrClFN₂O₂	详情	详情
(VI)	16640	Ethyl 2-bromoacetate; Ethyl bromoacetate	105-36-2	C₄H₇BrO₂	详情	详情
(VII)	19564	ethyl 2-[3-(4-bromo-2-fluorobenzyl)-7-chloro-2,4-dioxo-3,4-dihydro-1(2H)-quinazolinyl]acetate		C₁₉H₁₅BrClFN₂O₄	详情	详情
(VIII)	19565	4-chloro-2-nitrobenzoic acid	6280-88-2	C₇H₄ClNO₄	详情	详情
(IX)	19566	N-(4-bromo-2-fluorobenzyl)-4-chloro-2-nitrobenzamide		C₁₄H₉BrClFN₂O₃	详情	详情

Extended Information