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【结 构 式】 
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【分子编号】21086 【品名】3-methoxy-4-nitrobenzoyl chloride 【CA登记号】 |
【 分 子 式 】C8H6ClNO4 【 分 子 量 】215.59268 【元素组成】C 44.57% H 2.81% Cl 16.44% N 6.5% O 29.68% |
合成路线1
该中间体在本合成路线中的序号：(VI)Title compound has been obtained by two synthetic procedures: 1) Pyrrole-2-carbaldehyde (I) was alkylated with 2-nitrobenzyl bromide (II) in the presence of NaH to afford the N-nitrobenzyl pyrrole (III). Then, reductive cyclization over Pd/C produced the pyrrolobenzodiazepine (IV). Subsequent condensation of (IV) with acid chloride (VI), prepared from 3-methoxy-4-nitrobenzoic acid (V) and oxalyl chloride, gave benzamide (VII). The nitro group of (VII) was then reduced by catalytic hydrogenation over Pd/C, and the resulting amine (VIII) was further acylated with biphenyl-2-carbonyl chloride (IX) in the presence of diisopropyl ethylamine (DIEA) to yield diamide (X). Finally, the Mannich reaction with tetramethyl diaminomethane and paraformaldehyde introduced the (dimethylamino)methyl group into the pyrrole nucleus. 2) In a related procedure, 3-methoxy-4-nitrobenzoic acid (V) was esterified with MeOH in the presence of SOCl2. The nitrobenzoic ester (XI) was reduced to aminoester (XII) by hydrogenation over Pd/C, and then acylated with biphenyl-2-carbonyl chloride (IX) and DIEA to produce amide (XIII). Subsequent saponification of the ester function of (XIII), followed by treatment with oxalyl chloride furnished acid chloride (XIV), which was then condensed with the tricyclic intermediate (IV) to yield diamide (X). Finally, the (dimethylamino)methyl group was introduced, as before, by means of a Mannich reaction.
| 【1】 Ashwell, M.A.; et al.; The design, synthesis and physicochemical properties of a novel series of human vasopressin-V2 receptor antagonists. 216th ACS Natl Meet (Aug. 23-27, Boston) 1998, Abst MEDI 061. |
| 【2】 Bagli, J.F.; Ashwell, M.A.; Caggiano, T.J.; et al.; The design, synthesis and physical chemical properties of novel human vasopressin V2-receptor antagonists optimized for parenteral delivery. Bioorg Med Chem Lett 2000, 10, 8, 783. |
| 【3】 Albright, J.D.; Venkatesan, A.M.; Dusza, J.P.; Sum, F.-W. (American Cyanamid Co.); Tricyclic benzazepine vasopressin antagonists. JP 2000510154; US 5753648; WO 9749707 . |
| 【4】 Albright, J.D.; Venkatesan, A.M.; Dusza, J.P.; Sum, F.W. (American Cyanamid Co.); Tricyclic benzazepine vasopressin antagonists. US 5700796; WO 9749708 . |
| 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) | 21081 | Pyrrole-2-carbaldehyde; 1H-pyrrole-2-carbaldehyde | 1003-29-8 | C5H5NO | 详情 | 详情 |
| (II) | 21082 | 1-(bromomethyl)-2-nitrobenzene；2-Nitrobenzyl bromide;alpha-Bromo-2-nitrotoluene | 3958-60-9 | C7H6BrNO2 | 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) | 21085 | 3-methoxy-4-nitrobenzoic acid；4-Nitro-3-methoxybenzoic acid | 5081-36-7 | C8H7NO5 | 详情 | 详情 |
| (VI) | 21086 | 3-methoxy-4-nitrobenzoyl chloride | C8H6ClNO4 | 详情 | 详情 | |
| (VII) | 21087 | (3-methoxy-4-nitrophenyl)[5H-pyrrolo[2,1-c][1,4]benzodiazepin-10(11H)-yl]methanone | C20H17N3O4 | 详情 | 详情 | |
| (VIII) | 21088 | (4-amino-3-methoxyphenyl)[5H-pyrrolo[2,1-c][1,4]benzodiazepin-10(11H)-yl]methanone | C20H19N3O2 | 详情 | 详情 | |
| (IX) | 18506 | [1,1'-biphenyl]-2-carbonyl chloride | C13H9ClO | 详情 | 详情 | |
| (X) | 21090 | N-[2-methoxy-4-[5H-pyrrolo[2,1-c][1,4]benzodiazepin-10(11H)-ylcarbonyl]phenyl][1,1'-biphenyl]-2-carboxamide | C33H27N3O3 | 详情 | 详情 | |
| (XI) | 21091 | methyl 3-methoxy-4-nitrobenzoate | 5081-37-8 | C9H9NO5 | 详情 | 详情 |
| (XII) | 21092 | methyl 4-amino-3-methoxybenzoate | 41608-64-4 | C9H11NO3 | 详情 | 详情 |
| (XIII) | 21093 | methyl 4-[([1,1'-biphenyl]-2-ylcarbonyl)amino]-3-methoxybenzoate | C22H19NO4 | 详情 | 详情 | |
| (XIV) | 21094 | 4-[([1,1'-biphenyl]-2-ylcarbonyl)amino]-3-methoxybenzoyl chloride | C21H16ClNO3 | 详情 | 详情 |
合成路线2
该中间体在本合成路线中的序号：(II)3-Methoxy-4-nitrobenzoic acid (I) is chlorinated using SOCl2 in the presence of DMF or pyridine in refluxing toluene to yield the benzoyl chloride (II) , which is then coupled with trans-4-aminocyclohexanol (III) by means of K2CO3 in THF to provide amide (IV). Subsequent oxidation of the secondary alcohol group in compound (IV) by means of RuCl3 and NMMO in refluxing acetonitrite leads to the cyclohexanone (V), which, after condensation with N-(cyclopropylmethyl)piperazine (VI) in the presence of MsOH in refluxing toluene, is reduced to the cyclohexyl piperazine (VII) using NaBH4 in EtOH (1, 2). Reduction of the nitro group in compound (VII) by catalytic hydrogenation over Raney-Ni results in amine (VIII) ,which is finally condensed with 2-chloro-7-ethyl-7,8-dihydro-8-isopropyl-5-methylpteridin-6-one (IX) in the presence of p-TsOH·H2O in refluxing i-AmOH .
| 【1】 Grauert, M., Linz, G., Schmid, R., Sieger, P. (Boehringer Ingelheim Pharma GmbH & Co. KG). Trihydrochloride forms of a dihydropteridinone derivative and process for preparation. WO 2007090844. |
| 【2】 Linz, G., Kraemer, G.F., Gutschera, L., Asche, G. (Boehringer Ingelheim International GmbH). Method for the production of dihydropteridinones. WO 2006018220. |
| 【3】 Schnaubelt, J., Herter, R. (Boehringer Ingelheim International GmbH). Process for manufacturing dihydropteridinones and intermediates thereof. WO 2012049153. |
| 【4】 Linz, G., Sieger, P., Schmid, R., Goepper, S. (Boehringer International GmbH). Crystalline form of a dihydropteridinone derivative. WO 2009019205. |
| 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) | 21085 | 3-methoxy-4-nitrobenzoic acid；4-Nitro-3-methoxybenzoic acid | 5081-36-7 | C8H7NO5 | 详情 | 详情 |
| (II) | 21086 | 3-methoxy-4-nitrobenzoyl chloride | C8H6ClNO4 | 详情 | 详情 | |
| (III) | 68529 | trans-4-aminocyclohexanol；trans-4-Hydroxycyclohexylamine；trans-4-Amino-1-cyclohexanol;trans-1-Amino-4-cyclohexanol;4-trans-Hydroxycyclohexylamine;trans-1,4-Cyclohexanolamine | 27489-62-9 | C6H13NO | 详情 | 详情 |
| (IV) | 68530 | C14H18N2O5 | 详情 | 详情 | ||
| (V) | 68531 | 3-methoxy-4-nitro-N-(4-oxocyclohexyl)benzamide | C14H16N2O5 | 详情 | 详情 | |
| (VI) | 68532 | N-(cyclopropylmethyl)piperazine；1-(Cyclopropylmethyl)piperazine | 57184-25-5 | C8H16N2 | 详情 | 详情 |
| (VII) | 68533 | N-((1r,4r)-4-(4-(cyclopropylmethyl)piperazin-1-yl)cyclohexyl)-3-methoxy-4-nitrobenzamide | C22H32N4O4 | 详情 | 详情 | |
| (VIII) | 68534 | 4-amino-N-(4-(4-(cyclopropylmethyl)piperazin-1-yl)cyclohexyl)-3-methoxybenzamide | C22H34N4O2 | 详情 | 详情 | |
| (IX) | 68535 | (R)-2-chloro-7-ethyl-8-isopropyl-5-methyl-7,8-dihydropteridin-6(5H)-one | C12H17ClN4O | 详情 | 详情 |
合成路线3
该中间体在本合成路线中的序号：(II)Condensation of 4-acetamidocyclohexanone (XVII) with N-(cyclopropylmethyl)piperazine (VI) in refluxing toluene, optionally in the presence of MsOH , followed by reduction by means of NaBH4 or H2 over PtO2 in EtOH yields the trans-diaminocyclohexane derivative (XVIII) . Hydrolysis of acetamide (XVIII) using either boiling aqueous HCl or p-TsOH in H2O at 120 °C in a sealed reactor gives the corresponding cyclohexylamine trihydrochloride (XXa) or tritosylate salt (XXb) (1-3). Finally, compounds (XIXa) or (XIXb) are acylated with 3-methoxy-4-nitrobenzoyl chloride (II) in the presence of DIEA in THF or aqueous NaOH .
| 【1】 Grauert, M., Linz, G., Schmid, R., Sieger, P. (Boehringer Ingelheim Pharma GmbH & Co. KG). Trihydrochloride forms of a dihydropteridinone derivative and process for preparation. WO 2007090844. |
| 【2】 Linz, G., Kraemer, G.F., Gutschera, L., Asche, G. (Boehringer Ingelheim International GmbH). Method for the production of dihydropteridinones. WO 2006018220. |
| 【3】 Schnaubelt, J., Herter, R. (Boehringer Ingelheim International GmbH). Process for manufacturing dihydropteridinones and intermediates thereof. WO 2012049153. |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (XIXa) | 68543 | 4-(4-(cyclopropylmethyl)piperazin-1-yl)cyclohexanamine trihydrochloride | C14H27N3.3HCl | 详情 | 详情 | |
| (XIXb) | 68544 | 4-(4-(cyclopropylmethyl)piperazin-1-yl)cyclohexanamine tris(4-methylbenzenesulfonate) | C14H27N3.3C7H8O3S | 详情 | 详情 | |
| (II) | 21086 | 3-methoxy-4-nitrobenzoyl chloride | C8H6ClNO4 | 详情 | 详情 | |
| (VI) | 68532 | N-(cyclopropylmethyl)piperazine；1-(Cyclopropylmethyl)piperazine | 57184-25-5 | C8H16N2 | 详情 | 详情 |
| (VII) | 68533 | N-((1r,4r)-4-(4-(cyclopropylmethyl)piperazin-1-yl)cyclohexyl)-3-methoxy-4-nitrobenzamide | C22H32N4O4 | 详情 | 详情 | |
| (XVII) | 11895 | N-(4-Oxocyclohexyl)acetamide | 27514-08-5 | C8H13NO2 | 详情 | 详情 |
| (XVIII) | 68542 | N-(4-(4-(cyclopropylmethyl)piperazin-1-yl)cyclohexyl)acetamide | C16H29N3O | 详情 | 详情 |