• English
  • 简体中文
Login Register
Current Location: Home > Feedback Help Print

【结 构 式】

【分子编号】53121

【品名】tert-butyl 3-{[(benzoylamino)carbothioyl]amino}-4-(phenethylamino)phenyl(methyl)carbamate

【CA登记号】n/a

【 分 子 式 】C28H32N4O3S

【 分 子 量 】504.65324

【元素组成】C 66.64% H 6.39% N 11.1% O 9.51% S 6.35%

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:(VIII)

Conversion of 4-fluoro-3-nitroaniline (I) into the N-methyl derivative (III) was achieved via formation of the corresponding p-toluenesulfonamide (II), which was further N-alkylated with dimethyl sulfate in the presence of NaOH, followed by sulfonamide hydrolysis with concentrated sulfuric acid. Displacement of the fluoride group of (III) with phenethylamine (IV) in hot NMP gave rise to the p-phenylenediamine (V). After selective protection of the methylamino group of (V) as the N-Boc derivative (VI), the nitro group was reduced to amine (VII) by catalytic hydrogenation over Pd/C. Condensation of (VII) with benzoyl isothiocyanate to yield (VIII), and subsequent cyclization in the presence of EDC, produced the benzimidazole (IX). Acidic cleavage of the Boc protecting group of (IX) gave amine (X). This was finally condensed with isopropyl isocyanate to furnish the title urea.

1 Akwabi-Ameyaw, A.; et al.; Synthesis and SAR of substituted 5-acylamino benzimidazoles as potent neuropeptide Y Y5 antagonists. 222nd ACS Natl Meet (Aug 26 2001, Chicago) 2001, Abst MEDI 33.
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) 24710 4-fluoro-3-nitroaniline 364-76-1 C6H5FN2O2 详情 详情
(II) 53116 N-(4-fluoro-3-nitrophenyl)-4-methylbenzenesulfonamide n/a C13H11FN2O4S 详情 详情
(III) 53117 4-fluoro-N-methyl-3-nitroaniline; N-(4-fluoro-3-nitrophenyl)-N-methylamine n/a C7H7FN2O2 详情 详情
(IV) 18333 Phenethylamine; 2-Phenyl-1-ethanamine 64-04-0 C8H11N 详情 详情
(V) 53118 N-methyl-N-[3-nitro-4-(phenethylamino)phenyl]amine; N~4~-methyl-2-nitro-N~1~-phenethyl-1,4-benzenediamine n/a C15H17N3O2 详情 详情
(VI) 53119 tert-butyl methyl[3-nitro-4-(phenethylamino)phenyl]carbamate n/a C20H25N3O4 详情 详情
(VII) 53120 tert-butyl 3-amino-4-(phenethylamino)phenyl(methyl)carbamate n/a C20H27N3O2 详情 详情
(VIII) 53121 tert-butyl 3-{[(benzoylamino)carbothioyl]amino}-4-(phenethylamino)phenyl(methyl)carbamate n/a C28H32N4O3S 详情 详情
(IX) 53122 tert-butyl 2-(benzoylamino)-1-phenethyl-1H-benzimidazol-5-yl(methyl)carbamate n/a C28H30N4O3 详情 详情
(X) 53123 N-[5-(methylamino)-1-phenethyl-1H-benzimidazol-2-yl]benzamide n/a C23H22N4O 详情 详情
Extended Information