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【结 构 式】

【药物名称】

【化学名称】N-(2-Butylthieno[3,2-d]pyrimidin-4-yl)-N-cyclohexylamine hydrochloride

【CA登记号】214416-93-0

【 分 子 式 】C16H24ClN3S

【 分 子 量 】325.90678

【开发单位】Almirall Prodesfarma (Originator)

【药理作用】Asthma Therapy, Bronchodilators, RESPIRATORY DRUGS, Phosphodiesterase IV Inhibitors

合成路线1

This compound can be obtained by several related ways: 1.- The cyclization of 3-aminothiophene-2-carboxamide (I) with pentanoyl anhydride (II) by means of DCC, DMAP and pyridine in DMF and NaOH gives 2-butylthieno[3,2-d]pyrimidin-4(3H)-one (III), which by reaction with POCl3 or SOCl2 affords 2-butyl-4-chlorothieno[3,2-d]pyrimidine (IV). Finally, this compound is condensed with cyclohexylamine (V) by means of triethylamine in in THF. 2.- The intermediate 2-butylthieno[3,2-d]pyrimidin-4-(3H)-one (III) can be obtained by other ways: a.- By cyclization of amide (I) with pentanoic acid (VI) by means of DCC, DMAP and pyridine in DMF and NaOH. b.- By cyclization of 3-aminothiophene-2-carboxylic acid methyl ester (VII) with pentanoic acid (VI) by means of DCC, DMAP and ammonia in dichloromethane. c.- By cyclization of 3-aminothiophene-2-carboxylic acid methyl ester (VII) with pentanoyl chloride (VIII) by means of pyridine and ammonia. d.- By cyclization of 3-aminothiophene-2-carboxylic acid (IX) with pentanoic anhydride (II) and ammonia.

1 Crespo, M. I.; Pages, L.; Vega, A.; Segarra, V.; Lopez, M.; Domenech, T.; Miralpeix, M.; Beleta, J.; Ryder, H.; Palacios, J.M.; Design, synthesis, and biological activities of new thieno[3,2-d]pyrimidines as selective type 4 phosphodiesterase inhibitors. J Med Chem 1998, 41, 21, 4021.
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) 27682 3-amino-2-thiophenecarboxamide 147123-47-5 C5H6N2OS 详情 详情
(II) 27683 pentanoic anhydride 2082-59-9 C10H18O3 详情 详情
(III) 27684 2-butylthieno[3,2-d]pyrimidin-4(3H)-one C10H12N2OS 详情 详情
(IV) 27685 2-butyl-4-chlorothieno[3,2-d]pyrimidine C10H11ClN2S 详情 详情
(V) 17966 cyclohexanamine; cyclohexyl amine; cyclohexylamine 108-91-8 C6H13N 详情 详情
(VI) 19682 pentanoic acid 109-52-4 C5H10O2 详情 详情
(VII) 27686 3-amino-2-thiophenecarboxylic acid methyl ester; methyl 3-amino-2-thiophenecarboxylate 22288-78-4 C6H7NO2S 详情 详情
(VIII) 15116 pentanoyl chloride; valeryl chloride 638-29-9 C5H9ClO 详情 详情
(IX) 27687 3-amino-2-thiophenecarboxylic acid C5H5NO2S 详情 详情
Extended Information