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【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.
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) 12646 3-Nitrobenzaldehyde 99-61-6 C7H5NO3 详情 详情
(II) 11372 Methyl (E)-3-amino-2-butenoate; Methyl 3-aminocrotonate C5H9NO2 详情 详情
(III) 24243 1-benzyl-3-piperidinyl 3-oxobutanoate C16H21NO3 详情 详情

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.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(III) 24243 1-benzyl-3-piperidinyl 3-oxobutanoate C16H21NO3 详情 详情
(IV) 12276 methyl (Z)-2-acetyl-3-(3-nitrophenyl)-2-propenoate C12H11NO5 详情 详情

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.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(IV) 12276 methyl (Z)-2-acetyl-3-(3-nitrophenyl)-2-propenoate C12H11NO5 详情 详情
(V) 24251 1-benzyl-3-piperidinyl (E)-3-amino-2-butenoate C16H22N2O2 详情 详情

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.
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
(VII) 24253 1-benzyl-3-piperidinol 14813-01-5 C12H17NO 详情 详情

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
Extended Information