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【结 构 式】 
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【分子编号】27750 【品名】Indole-2-carboxylic acid methyl ester; 1H-indole-2-carboxylic acid methyl ester 【CA登记号】1202-04-6 |
【 分 子 式 】C10H9NO2 【 分 子 量 】175.187 【元素组成】C 68.56% H 5.18% N 8% O 18.27% |
合成路线1
该中间体在本合成路线中的序号：(II)2-Indolecarboxylic acid (I) was esterified with MeOH and SOCl2 to provide methyl ester (II). Subsequent N-alkylation of (II) using methyl iodide and NaH afforded N-methyl indole (III). Guanidine, liberated by treatment of the hydrochloride salt with NaOMe, was finally condensed with indole ester (III) at 130 C to produce the corresponding acylguanidine, which was isolated as the mesylate salt.
| 【1】 Kojima, A.; Kitano, M.; Miyagishi, A.; Noguchi, T.; Yagi, H.; Nakano, K.; Ohashi, N. (Sumitomo Pharmaceuticals Co., Ltd.); Indoloylguanidine derivs. as inhibitors of sodium-hydrogen exchange. CA 2121391; EP 0622356; JP 1995010839 . |
| 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) | 25226 | 1H-Indole-2-carboxylic acid; Indole-2-carboxylic acid | 1477-50-5 | C9H7NO2 | 详情 | 详情 |
| (II) | 27750 | Indole-2-carboxylic acid methyl ester; 1H-indole-2-carboxylic acid methyl ester | 1202-04-6 | C10H9NO2 | 详情 | 详情 |
| (III) | 27751 | methyl 1-methyl-1H-indole-2-carboxylate | C11H11NO2 | 详情 | 详情 | |
| (IV) | 14790 | Guanidine | 113-00-8 | CH5N3 | 详情 | 详情 |
合成路线2
该中间体在本合成路线中的序号：(I)The alkylation of 1H-indole-2-carboxylic acid methyl ester (I) with 2-phenylethyl bromide (II) by means of NaH in DMF gives 1-(2-phenylethyl)-1H-indole-2-carboxylic acid methyl ester (II), with is hydrolyzed with NaOH in methanol/water yielding the corresponding free acid (IV). Finally, this compound is condensed with guanidine by means of CDI and TEA in THF/DMF.
| 【1】 Kitano, M.; Miyagishi, A.; Ohashi, N.; Noguchi, T.; Nakano, K.; Kojima, A.; Synthesis and biological activity of N-(aminoiminomethyl)-1H-indole carboxamide derivatives as Na+/H+ exchanger inhibitors. Chem Pharm Bull 1999, 47, 11, 1538. |
| 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) | 27750 | Indole-2-carboxylic acid methyl ester; 1H-indole-2-carboxylic acid methyl ester | 1202-04-6 | C10H9NO2 | 详情 | 详情 |
| (II) | 20730 | 1-(2-bromoethyl)benzene；1-Bromo-2-phenylethane;(2-Bromoethyl)benzene;Phenethyl bromide | 103-63-9 | C8H9Br | 详情 | 详情 |
| (III) | 40402 | methyl 1-phenethyl-1H-indole-2-carboxylate | C18H17NO2 | 详情 | 详情 | |
| (IV) | 40403 | 1-phenethyl-1H-indole-2-carboxylic acid | C17H15NO2 | 详情 | 详情 | |
| (V) | 14790 | Guanidine | 113-00-8 | CH5N3 | 详情 | 详情 |