【结 构 式】 |
【药物名称】Benidipine hydrochloride, KW-3049, Coniel R, Coniel 【化学名称】(±)-(R*)-2,6-Dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylic acid methyl (R*)-1-benzylpiperidin-3-yl diester hydrochloride 【CA登记号】85387-35-5, 105979-17-7 (free base) 【 分 子 式 】C28H32ClN3O6 【 分 子 量 】542.03674 |
【开发单位】Kyowa Hakko (Originator) 【药理作用】Angina pectoris, Treatment of, CARDIOVASCULAR DRUGS, Hypertension, Treatment of, Treatment of Disorders of the Coronary Arteries and Atherosclerosis, Calcium Channel Blockers |
合成路线1
1) By cyclization of 3-nitrobenzaldehyde (I) with methyl 3-aminocrotonate (II) and N-benzyl-3-pipendinyl acetylacetate (III) in refluxing THF.
【1】 Muto, K.; Kuroda, T.; Karasawa, A.; Yamada, K.; Nakamizo, N. (Kyowa Hakko Kogyo Co., Ltd.); 1,4-Dihydropyridine derivatives. CA 1246078; EP 0106275; ES 526441 . |
【2】 Muto, K.; Watanabe, M.; Hatta, T.; Sugaya, T.; Takemoto, Y.; Nakamizo, N. (Kyowa Hakko Kogyo Co., Ltd.); 1,4-Dihyropiridine derivatives. EP 0063365; JP 57171968; US 4448964 . |
【3】 Prous, J.; Castaner, J.; KW-3049. Drugs Fut 1986, 11, 11, 936. |
合成路线2
2) By cyclization of methyl 3-nitrobenzylidene acetoacetate (IV) with (III) in refluxing THF.
【1】 Muto, K.; Kuroda, T.; Karasawa, A.; Yamada, K.; Nakamizo, N. (Kyowa Hakko Kogyo Co., Ltd.); 1,4-Dihydropyridine derivatives. CA 1246078; EP 0106275; ES 526441 . |
【2】 Prous, J.; Castaner, J.; KW-3049. Drugs Fut 1986, 11, 11, 936. |
合成路线3
3) By cyclization of (IV) with N-benzyl 3-piperidyl-3-aminocrotonate (V) in refluxing methanol.
【1】 Muto, K.; Kuroda, T.; Karasawa, A.; Yamada, K.; Nakamizo, N. (Kyowa Hakko Kogyo Co., Ltd.); 1,4-Dihydropyridine derivatives. CA 1246078; EP 0106275; ES 526441 . |
【2】 Prous, J.; Castaner, J.; KW-3049. Drugs Fut 1986, 11, 11, 936. |
合成路线4
4) By esterification of 1,4-dihydro-2,6-dimethyl 4-(3-nitrophenyl)pyridine-3,5-dicarboxylic acid monomethyl ester (VI) with 1-benzyl-3-hydroxypiperidine (VII) by means of SOCl2 in DMF dichloroethane.
【1】 Muto, K.; Kuroda, T.; Karasawa, A.; Yamada, K.; Nakamizo, N. (Kyowa Hakko Kogyo Co., Ltd.); 1,4-Dihydropyridine derivatives. CA 1246078; EP 0106275; ES 526441 . |
【2】 Prous, J.; Castaner, J.; KW-3049. Drugs Fut 1986, 11, 11, 936. |
合成路线5
5) The esterification of (VI) with 3-hydroxypipendine (VIII) as before gives the corresponding ester (IX), which is then benzylated with benzyl chloride (X) by means of triethylamine in refluxing THF.
【1】 Muto, K.; Kuroda, T.; Karasawa, A.; Yamada, K.; Nakamizo, N. (Kyowa Hakko Kogyo Co., Ltd.); 1,4-Dihydropyridine derivatives. CA 1246078; EP 0106275; ES 526441 . |
【2】 Prous, J.; Castaner, J.; KW-3049. Drugs Fut 1986, 11, 11, 936. |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
(VI) | 13950 | 5-(Methoxycarbonyl)-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydro-3-pyridinecarboxylic acid | C16H16N2O6 | 详情 | 详情 | |
(VIII) | 24255 | 3-piperidinol | 6859-99-0 | C5H11NO | 详情 | 详情 |
(IX) | 24256 | 3-methyl 5-(3-piperidinyl) 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydro-3,5-pyridinedicarboxylate | C21H25N3O6 | 详情 | 详情 | |
(X) | 19171 | 1-(Chloromethyl)benzene; Benzyl chloride | 100-44-7 | C7H7Cl | 详情 | 详情 |