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【结 构 式】

【分子编号】33797

【品名】6-[(5-fluoro-2-methylbenzoyl)amino]nicotinoyl chloride

【CA登记号】

【 分 子 式 】C14H10ClFN2O2

【 分 子 量 】292.6967832

【元素组成】C 57.45% H 3.44% Cl 12.11% F 6.49% N 9.57% O 10.93%

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:(X)

Alkylation of pyrrole-2-carboxaldehyde (II) with 2-nitrobenzyl chloride (I) in the presence of NaH afforded the N-benzyl pyrrole (III). Subsequent reductive ring closure of (III) by hydrogenation over Pd/C produced the pyrrolobenzodiazepine (IV). Acid-catalyzed esterification of 6-aminonicotinic acid (V) with either methanol or ethanol provided the corresponding esters (VIa) or (VIb). Further coupling of (VIa) or (VIb) with two equivalents of 5-fluoro-2-methylbenzoyl chloride (VII) gave rise to imide (VIII). Simultaneous hydrolysis of ester function and one benzoyl group of (VIIIa-b) with NaOH furnished acid (IX), which was then converted to the corresponding acid chloride (X) employing either thionyl chloride or oxalyl chloride. Finally, coupling of acid chloride (X) with amine (IV) in the presence of Et3N yielded the target amide.

1 Albright, J.D.; Venkatesan, A.M.; Dusza, J.P.; Sum, F.W. (American Cyanamid Co.); Tricyclic benzazepine vasopressin antagonists. US 5700796; WO 9749708 .
2 Burgoyne, D.L.; Shen, Y.; Langlands, J.M.; Rogers, C.; Chau, J.H.-L.; Piers, E.; Salari, H. (InflaZyme Pharmaceuticals Ltd.); 6,7-Oxygenated steroids and uses related thereto. US 6046185; WO 9802450 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(VIa) 12114 methyl 6-aminonicotinate C7H8N2O2 详情 详情
(VIb) 33794 ethyl 6-aminonicotinate C8H10N2O2 详情 详情
(VIIIa) 33795 methyl 6-[bis(5-fluoro-2-methylbenzoyl)amino]nicotinate C23H18F2N2O4 详情 详情
(VIIIb) 33814 ethyl 6-[bis(5-fluoro-2-methylbenzoyl)amino]nicotinate C24H20F2N2O4 详情 详情
(I) 33792 1-(chloromethyl)-2-nitrobenzene 612-23-7 C7H6ClNO2 详情 详情
(II) 21081 Pyrrole-2-carbaldehyde; 1H-pyrrole-2-carbaldehyde 1003-29-8 C5H5NO 详情 详情
(III) 21083 1-(2-nitrobenzyl)-1H-pyrrole-2-carbaldehyde; N-(2-Nitrobenzyl)pyrrole-2-carboxaldehyde 22162-51-2 C12H10N2O3 详情 详情
(IV) 21084 10,11-dihydro-5H-pyrrolo[2,1-c][1,4]benzodiazepine 22162-53-4 C12H12N2 详情 详情
(V) 33793 6-aminonicotinic acid 3167-49-5 C6H6N2O2 详情 详情
(VII) 26677 5-fluoro-2-methylbenzoyl chloride C8H6ClFO 详情 详情
(IX) 33796 6-[(5-fluoro-2-methylbenzoyl)amino]nicotinic acid C14H11FN2O3 详情 详情
(X) 33797 6-[(5-fluoro-2-methylbenzoyl)amino]nicotinoyl chloride C14H10ClFN2O2 详情 详情
Extended Information