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CAS 14205-39-1
3-Amino-2-butenoic acid methyl esterMethyl 3-amino-2-butenoate
Codes: (IV)109067-1-a, (VII)109067-4-a, (VII)109067-5-a, (VIII)109067-6-a, (V)109067-8-a,(V)109067-8-b, Lercanidipine Hydrochloride-006, Levamlodipine Besylate-009, (VIII)109067-10-a
Application context (from source-drug indications)
HypertensionOlmesartan Medoxomil/Amlodipine orotateEssential hypertensionValsartan/Amlodipine OrotateEssential hypertensionValsartan/Lercanidipine HydrochlorideHypertensionLevamlodipine BesylateAngina pectorisLevamlodipine BesylateEssential hypertensionLevamlodipine BesylateVariant anginaAmlodipine OrotateHypertensionAmlodipine OrotateIschaemic heart diseaseAmlodipine OrotateStable anginaAmlodipine OrotateHypertensionLercanidipine HydrochlorideHypertensionAmlodipine CamsylateHypertensionAmlodipine MaleateAngina pectorisAmlodipine MaleateChronic renal impairmentAmlodipine Maleate肾性高血压Amlodipine MaleateHeart diseaseAmlodipine Maleate血管疾病Amlodipine Maleate
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| Olmesartan Medoxomil/Amlodipine orotate | Tier C — Watch / trade | - |
| Valsartan/Amlodipine Orotate | Tier C — Watch / trade | - |
| Valsartan/Lercanidipine Hydrochloride | Tier C — Watch / trade | - |
| Levamlodipine Besylate | Tier C — Watch / trade | - |
| Amlodipine Orotate | Tier C — Watch / trade | - |
| Lercanidipine Hydrochloride | Tier C — Watch / trade | - |
| Amlodipine Camsylate | Tier C — Watch / trade | - |
| Amlodipine Maleate | Tier C — Watch / trade | - |
Position in synthesis routes (up/downstream chain)
Ordered by route registration; left → right is the synthesis direction. The highlighted node is the current CAS; others link to their own profiles.
Diethoxyacetic acid ethyl ester→2,2-Diethoxyethanol→4-Chloro-3-oxobutyric acid ethyl ester→ethyl 4-(2,2-diethoxyethoxy)-3-oxobutanoate→2-Chlorobenzaldehyde→ethyl (2Z)-2-[(2-chlorophenyl)methylidene]-4-(2,2-dimethoxyethoxy)-3-oxobutanoate→Methyl 3-amino-2-butenoate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-[(2,2-dimethoxyethoxy)methyl]-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-{[(2E)-2-(hydroxyimino)ethoxy]methyl}-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→ethyl (2E)-3-amino-4-(2,2-diethoxyethoxy)but-2-enoate→Methyl (2Z)-2-[(2-chlorophenyl)methylidene]-3-oxobutanoate
2-Aminoethanol→(2-chloro-1,1-diphenylethyl)benzene→2-[(triphenylmethyl)amino]ethan-1-ol→Ethyl 4-chloroacetoacetate→ethyl 3-oxo-4-{2-[(triphenylmethyl)amino]ethoxy}butanoate→2-Chlorobenzaldehyde→3-Amino-2-butenoic acid methyl ester→3-ethyl 5-methyl 4-(2-chlorophenyl)-6-methyl-2-({2-[(triphenylmethyl)amino]ethoxy}methyl)-1,4-dihydropyridine-3,5-dicarboxylate
2-azidoethan-1-ol→2-Chloroacetic acid→2-(2-azidoethoxy)acetic acid→2,2-Dimethyl-1,3-dioxane-4,6-dione→3-Hydroxypropionitrile→2-cyanoethyl 4-(2-azidoethoxy)-3-oxobutanoate→2-Chlorobenzaldehyde→3-Amino-2-butenoic acid methyl ester→3-(2-cyanoethyl) 5-methyl 2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-5-(methoxycarbonyl)-6-methyl-1,4-dihydropyridine-3-carboxylic acid→(2S)-2-methoxy-2-phenylethan-1-ol→3-(2S)-2-methoxy-2-phenylethyl 5-methyl 2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-[(2S)-2-Methoxy-2-phenylethyl] 5-methyl (4S)-2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-Ethyl 5-methyl (4S)-2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-Ethyl 5-methyl (4S)-2-[(2-aminoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate
[5-(hydroxymethyl)-2,2-dimethyl-1,3-dioxolan-4-yl]methanol→4-Chloro-3-oxobutyric acid ethyl ester→ethyl 4-({5-[(4-ethoxy-2,4-dioxobutoxy)methyl]-2,2-dimethyl-1,3-dioxolan-4-yl}methoxy)-3-oxobutanoate→2-Chlorobenzaldehyde→3-Amino-2-butenoic acid methyl ester→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-({[5-({[4-(2-chlorophenyl)-3-(ethoxycarbonyl)-5-(methoxycarbonyl)-6-methyl-1,4-dihydropyridin-2-yl]methoxy}methyl)-2,2-dimethyl-1,3-dioxolan-4-yl]methoxy}methyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-[(4-{[4-(2-chlorophenyl)-3-(ethoxycarbonyl)-5-(methoxycarbonyl)-6-methyl-1,4-dihydropyridin-2-yl]methoxy}-2,3-dihydroxybutoxy)methyl]-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-6-methyl-2-[(2-oxoethoxy)methyl]-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-{[(2E)-2-(hydroxyimino)ethoxy]methyl}-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate
4-Chloro-3-oxobutyric acid ethyl ester→2-Chlorobenzaldehyde→3-Amino-2-butenoic acid methyl ester→3-ethyl 5-methyl 4-(2-chlorophenyl)-6-methyl-2-[(2-oxoethoxy)methyl]-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-{[(2E)-2-(hydroxyimino)ethoxy]methyl}-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→[(4S)-2,2-Dimethyl-1,3-dioxolan-4-yl]methanol→ethyl 4-[(2,2-dimethyl-1,3-dioxolan-4-yl)methoxy]-3-oxobutanoate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-{[(2,2-dimethyl-1,3-dioxolan-4-yl)methoxy]methyl}-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-[(2,3-dihydroxypropoxy)methyl]-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate
Diethoxyacetic acid ethyl ester→2,2-Diethoxyethanol→4-Chloro-3-oxobutyric acid ethyl ester→ethyl 4-(2,2-diethoxyethoxy)-3-oxobutanoate→2-Chlorobenzaldehyde→ethyl (2Z)-2-[(2-chlorophenyl)methylidene]-4-(2,2-dimethoxyethoxy)-3-oxobutanoate→Methyl 3-amino-2-butenoate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-[(2,2-dimethoxyethoxy)methyl]-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-{[(2E)-2-(hydroxyimino)ethoxy]methyl}-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→ethyl (2E)-3-amino-4-(2,2-diethoxyethoxy)but-2-enoate→Methyl (2Z)-2-[(2-chlorophenyl)methylidene]-3-oxobutanoate
2-Aminoethanol→(2-chloro-1,1-diphenylethyl)benzene→2-[(triphenylmethyl)amino]ethan-1-ol→Ethyl 4-chloroacetoacetate→ethyl 3-oxo-4-{2-[(triphenylmethyl)amino]ethoxy}butanoate→2-Chlorobenzaldehyde→3-Amino-2-butenoic acid methyl ester→3-ethyl 5-methyl 4-(2-chlorophenyl)-6-methyl-2-({2-[(triphenylmethyl)amino]ethoxy}methyl)-1,4-dihydropyridine-3,5-dicarboxylate
2-azidoethan-1-ol→2-Chloroacetic acid→2-(2-azidoethoxy)acetic acid→2,2-Dimethyl-1,3-dioxane-4,6-dione→3-Hydroxypropionitrile→2-cyanoethyl 4-(2-azidoethoxy)-3-oxobutanoate→2-Chlorobenzaldehyde→3-Amino-2-butenoic acid methyl ester→3-(2-cyanoethyl) 5-methyl 2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-5-(methoxycarbonyl)-6-methyl-1,4-dihydropyridine-3-carboxylic acid→(2S)-2-methoxy-2-phenylethan-1-ol→3-(2S)-2-methoxy-2-phenylethyl 5-methyl 2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-[(2S)-2-Methoxy-2-phenylethyl] 5-methyl (4S)-2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-Ethyl 5-methyl (4S)-2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-Ethyl 5-methyl (4S)-2-[(2-aminoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate
[5-(hydroxymethyl)-2,2-dimethyl-1,3-dioxolan-4-yl]methanol→4-Chloro-3-oxobutyric acid ethyl ester→ethyl 4-({5-[(4-ethoxy-2,4-dioxobutoxy)methyl]-2,2-dimethyl-1,3-dioxolan-4-yl}methoxy)-3-oxobutanoate→2-Chlorobenzaldehyde→3-Amino-2-butenoic acid methyl ester→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-({[5-({[4-(2-chlorophenyl)-3-(ethoxycarbonyl)-5-(methoxycarbonyl)-6-methyl-1,4-dihydropyridin-2-yl]methoxy}methyl)-2,2-dimethyl-1,3-dioxolan-4-yl]methoxy}methyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-[(4-{[4-(2-chlorophenyl)-3-(ethoxycarbonyl)-5-(methoxycarbonyl)-6-methyl-1,4-dihydropyridin-2-yl]methoxy}-2,3-dihydroxybutoxy)methyl]-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-6-methyl-2-[(2-oxoethoxy)methyl]-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-{[(2E)-2-(hydroxyimino)ethoxy]methyl}-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate
4-Chloro-3-oxobutyric acid ethyl ester→2-Chlorobenzaldehyde→3-Amino-2-butenoic acid methyl ester→3-ethyl 5-methyl 4-(2-chlorophenyl)-6-methyl-2-[(2-oxoethoxy)methyl]-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-{[(2E)-2-(hydroxyimino)ethoxy]methyl}-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→[(4S)-2,2-Dimethyl-1,3-dioxolan-4-yl]methanol→ethyl 4-[(2,2-dimethyl-1,3-dioxolan-4-yl)methoxy]-3-oxobutanoate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-{[(2,2-dimethyl-1,3-dioxolan-4-yl)methoxy]methyl}-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-[(2,3-dihydroxypropoxy)methyl]-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate
4-Methylene-2-oxetanone→1-[(3,3-Diphenylpropyl)(methyl)amino]-2-methylpropan-2-ol→1-[(3,3-Diphenylpropyl)(methyl)amino]-2-methylpropan-2-yl 3-oxobutanoate→(3-Nitrophenyl)methanone→1-[(3,3-Diphenylpropyl)(methyl)amino]-2-methylpropan-2-yl (2Z)-2-[(3-nitrophenyl)methylidene]-3-oxobutanoate→3-Amino-2-butenoic acid methyl ester→(+/-)-5-(Methoxycarbonyl)-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydro-3-pyridinecarboxylic acid
1-Methoxybutane-1,3-dione→1-Chloro-2-methyl-2-propanol→1-Chloro-2-methylpropan-2-yl 3-oxobutanoate→(3-Nitrophenyl)methanone→1-Chloro-2-methylpropan-2-yl (2Z)-2-[(3-nitrophenyl)methylidene]-3-oxobutanoate→3-Amino-2-butenoic acid methyl ester→3-(1-Chloro-2-methylpropan-2-yl) 5-methyl 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate→3-(1-Bromo-2-methylpropan-2-yl) 5-methyl 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate→(+/-)-5-(Methoxycarbonyl)-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydro-3-pyridinecarboxylic acid→5-(Chlorocarbonyl)-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3-carboxylic acid methyl ester→1-Bromo-2-methylpropan-2-ol→(3,3-Diphenylpropyl)(methyl)amine
4-Methylene-2-oxetanone→1-Cyano-2-hydroxyethane→2-Cyanoethyl 3-oxobutanoate→(3-Nitrophenyl)methanone→3-Amino-2-butenoic acid methyl ester→1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid 3-(2-cyanoethyl)5-methyl ester→(+/-)-5-(Methoxycarbonyl)-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydro-3-pyridinecarboxylic acid→1-[(3,3-Diphenylpropyl)(methyl)amino]-2-methylpropan-2-ol
1-Methoxybutane-1,3-dione→1-[(3,3-Diphenylpropyl)(methyl)amino]-2-methylpropan-2-ol→1-[(3,3-Diphenylpropyl)(methyl)amino]-2-methylpropan-2-yl 3-oxobutanoate→(3-Nitrophenyl)methanone→1-[(3,3-Diphenylpropyl)(methyl)amino]-2-methylpropan-2-yl (2Z)-2-[(3-nitrophenyl)methylidene]-3-oxobutanoate→3-Amino-2-butenoic acid methyl ester→1-[(3,3-Diphenylpropyl)(methyl)amino]-2-methylpropan-2-yl methyl 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate
3-Ethyl 5-methyl 2-[(2-chloroethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→5-Ethyl 3-methyl 4-(2-chlorophenyl)-2-methyl-6-[(2-nitroethoxy)methyl]-1,4-dihydropyridine-3,5-dicarboxylate→(±)-2-(2-Aminoethoxymethyl)-4-(2-chlorophenyl)-3-ethoxycarbonyl-5-methoxycarbonyl-6-methyl-1,4-dihydropyridine→Ethyl 4-(2-phthalimidoethoxy)acetoacetate→3-Amino-2-butenoic acid methyl ester→2-Chlorobenzaldehyde→3-Ethyl 5-methyl (4RS)-4-(2-chlorophenyl)-2-[[2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)ethoxy]methyl]-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate
Diethoxyacetic acid ethyl ester→2,2-Diethoxyethanol→4-Chloro-3-oxobutyric acid ethyl ester→ethyl 4-(2,2-diethoxyethoxy)-3-oxobutanoate→2-Chlorobenzaldehyde→ethyl (2Z)-2-[(2-chlorophenyl)methylidene]-4-(2,2-dimethoxyethoxy)-3-oxobutanoate→Methyl 3-amino-2-butenoate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-[(2,2-dimethoxyethoxy)methyl]-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-{[(2E)-2-(hydroxyimino)ethoxy]methyl}-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→ethyl (2E)-3-amino-4-(2,2-diethoxyethoxy)but-2-enoate→Methyl (2Z)-2-[(2-chlorophenyl)methylidene]-3-oxobutanoate
2-Aminoethanol→(2-chloro-1,1-diphenylethyl)benzene→2-[(triphenylmethyl)amino]ethan-1-ol→Ethyl 4-chloroacetoacetate→ethyl 3-oxo-4-{2-[(triphenylmethyl)amino]ethoxy}butanoate→2-Chlorobenzaldehyde→3-Amino-2-butenoic acid methyl ester→3-ethyl 5-methyl 4-(2-chlorophenyl)-6-methyl-2-({2-[(triphenylmethyl)amino]ethoxy}methyl)-1,4-dihydropyridine-3,5-dicarboxylate
2-azidoethan-1-ol→2-Chloroacetic acid→2-(2-azidoethoxy)acetic acid→2,2-Dimethyl-1,3-dioxane-4,6-dione→3-Hydroxypropionitrile→2-cyanoethyl 4-(2-azidoethoxy)-3-oxobutanoate→2-Chlorobenzaldehyde→3-Amino-2-butenoic acid methyl ester→3-(2-cyanoethyl) 5-methyl 2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-5-(methoxycarbonyl)-6-methyl-1,4-dihydropyridine-3-carboxylic acid→(2S)-2-methoxy-2-phenylethan-1-ol→3-(2S)-2-methoxy-2-phenylethyl 5-methyl 2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-[(2S)-2-Methoxy-2-phenylethyl] 5-methyl (4S)-2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-Ethyl 5-methyl (4S)-2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-Ethyl 5-methyl (4S)-2-[(2-aminoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate
[5-(hydroxymethyl)-2,2-dimethyl-1,3-dioxolan-4-yl]methanol→4-Chloro-3-oxobutyric acid ethyl ester→ethyl 4-({5-[(4-ethoxy-2,4-dioxobutoxy)methyl]-2,2-dimethyl-1,3-dioxolan-4-yl}methoxy)-3-oxobutanoate→2-Chlorobenzaldehyde→3-Amino-2-butenoic acid methyl ester→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-({[5-({[4-(2-chlorophenyl)-3-(ethoxycarbonyl)-5-(methoxycarbonyl)-6-methyl-1,4-dihydropyridin-2-yl]methoxy}methyl)-2,2-dimethyl-1,3-dioxolan-4-yl]methoxy}methyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-[(4-{[4-(2-chlorophenyl)-3-(ethoxycarbonyl)-5-(methoxycarbonyl)-6-methyl-1,4-dihydropyridin-2-yl]methoxy}-2,3-dihydroxybutoxy)methyl]-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-6-methyl-2-[(2-oxoethoxy)methyl]-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-{[(2E)-2-(hydroxyimino)ethoxy]methyl}-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate
4-Chloro-3-oxobutyric acid ethyl ester→2-Chlorobenzaldehyde→3-Amino-2-butenoic acid methyl ester→3-ethyl 5-methyl 4-(2-chlorophenyl)-6-methyl-2-[(2-oxoethoxy)methyl]-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-{[(2E)-2-(hydroxyimino)ethoxy]methyl}-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→[(4S)-2,2-Dimethyl-1,3-dioxolan-4-yl]methanol→ethyl 4-[(2,2-dimethyl-1,3-dioxolan-4-yl)methoxy]-3-oxobutanoate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-{[(2,2-dimethyl-1,3-dioxolan-4-yl)methoxy]methyl}-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-[(2,3-dihydroxypropoxy)methyl]-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate
4-Methylene-2-oxetanone→1-[(3,3-Diphenylpropyl)(methyl)amino]-2-methylpropan-2-ol→1-[(3,3-Diphenylpropyl)(methyl)amino]-2-methylpropan-2-yl 3-oxobutanoate→(3-Nitrophenyl)methanone→1-[(3,3-Diphenylpropyl)(methyl)amino]-2-methylpropan-2-yl (2Z)-2-[(3-nitrophenyl)methylidene]-3-oxobutanoate→3-Amino-2-butenoic acid methyl ester→(+/-)-5-(Methoxycarbonyl)-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydro-3-pyridinecarboxylic acid
1-Methoxybutane-1,3-dione→1-Chloro-2-methyl-2-propanol→1-Chloro-2-methylpropan-2-yl 3-oxobutanoate→(3-Nitrophenyl)methanone→1-Chloro-2-methylpropan-2-yl (2Z)-2-[(3-nitrophenyl)methylidene]-3-oxobutanoate→3-Amino-2-butenoic acid methyl ester→3-(1-Chloro-2-methylpropan-2-yl) 5-methyl 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate→3-(1-Bromo-2-methylpropan-2-yl) 5-methyl 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate→(+/-)-5-(Methoxycarbonyl)-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydro-3-pyridinecarboxylic acid→5-(Chlorocarbonyl)-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3-carboxylic acid methyl ester→1-Bromo-2-methylpropan-2-ol→(3,3-Diphenylpropyl)(methyl)amine
4-Methylene-2-oxetanone→1-Cyano-2-hydroxyethane→2-Cyanoethyl 3-oxobutanoate→(3-Nitrophenyl)methanone→3-Amino-2-butenoic acid methyl ester→1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid 3-(2-cyanoethyl)5-methyl ester→(+/-)-5-(Methoxycarbonyl)-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydro-3-pyridinecarboxylic acid→1-[(3,3-Diphenylpropyl)(methyl)amino]-2-methylpropan-2-ol
1-Methoxybutane-1,3-dione→1-[(3,3-Diphenylpropyl)(methyl)amino]-2-methylpropan-2-ol→1-[(3,3-Diphenylpropyl)(methyl)amino]-2-methylpropan-2-yl 3-oxobutanoate→(3-Nitrophenyl)methanone→1-[(3,3-Diphenylpropyl)(methyl)amino]-2-methylpropan-2-yl (2Z)-2-[(3-nitrophenyl)methylidene]-3-oxobutanoate→3-Amino-2-butenoic acid methyl ester→1-[(3,3-Diphenylpropyl)(methyl)amino]-2-methylpropan-2-yl methyl 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate
Diethoxyacetic acid ethyl ester→2,2-Diethoxyethanol→4-Chloro-3-oxobutyric acid ethyl ester→ethyl 4-(2,2-diethoxyethoxy)-3-oxobutanoate→2-Chlorobenzaldehyde→ethyl (2Z)-2-[(2-chlorophenyl)methylidene]-4-(2,2-dimethoxyethoxy)-3-oxobutanoate→Methyl 3-amino-2-butenoate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-[(2,2-dimethoxyethoxy)methyl]-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-{[(2E)-2-(hydroxyimino)ethoxy]methyl}-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→ethyl (2E)-3-amino-4-(2,2-diethoxyethoxy)but-2-enoate→Methyl (2Z)-2-[(2-chlorophenyl)methylidene]-3-oxobutanoate
2-Aminoethanol→(2-chloro-1,1-diphenylethyl)benzene→2-[(triphenylmethyl)amino]ethan-1-ol→Ethyl 4-chloroacetoacetate→ethyl 3-oxo-4-{2-[(triphenylmethyl)amino]ethoxy}butanoate→2-Chlorobenzaldehyde→3-Amino-2-butenoic acid methyl ester→3-ethyl 5-methyl 4-(2-chlorophenyl)-6-methyl-2-({2-[(triphenylmethyl)amino]ethoxy}methyl)-1,4-dihydropyridine-3,5-dicarboxylate
2-azidoethan-1-ol→2-Chloroacetic acid→2-(2-azidoethoxy)acetic acid→2,2-Dimethyl-1,3-dioxane-4,6-dione→3-Hydroxypropionitrile→2-cyanoethyl 4-(2-azidoethoxy)-3-oxobutanoate→2-Chlorobenzaldehyde→3-Amino-2-butenoic acid methyl ester→3-(2-cyanoethyl) 5-methyl 2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-5-(methoxycarbonyl)-6-methyl-1,4-dihydropyridine-3-carboxylic acid→(2S)-2-methoxy-2-phenylethan-1-ol→3-(2S)-2-methoxy-2-phenylethyl 5-methyl 2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-[(2S)-2-Methoxy-2-phenylethyl] 5-methyl (4S)-2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-Ethyl 5-methyl (4S)-2-[(2-azidoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-Ethyl 5-methyl (4S)-2-[(2-aminoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate
[5-(hydroxymethyl)-2,2-dimethyl-1,3-dioxolan-4-yl]methanol→4-Chloro-3-oxobutyric acid ethyl ester→ethyl 4-({5-[(4-ethoxy-2,4-dioxobutoxy)methyl]-2,2-dimethyl-1,3-dioxolan-4-yl}methoxy)-3-oxobutanoate→2-Chlorobenzaldehyde→3-Amino-2-butenoic acid methyl ester→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-({[5-({[4-(2-chlorophenyl)-3-(ethoxycarbonyl)-5-(methoxycarbonyl)-6-methyl-1,4-dihydropyridin-2-yl]methoxy}methyl)-2,2-dimethyl-1,3-dioxolan-4-yl]methoxy}methyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-[(4-{[4-(2-chlorophenyl)-3-(ethoxycarbonyl)-5-(methoxycarbonyl)-6-methyl-1,4-dihydropyridin-2-yl]methoxy}-2,3-dihydroxybutoxy)methyl]-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-6-methyl-2-[(2-oxoethoxy)methyl]-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-{[(2E)-2-(hydroxyimino)ethoxy]methyl}-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate
4-Chloro-3-oxobutyric acid ethyl ester→2-Chlorobenzaldehyde→3-Amino-2-butenoic acid methyl ester→3-ethyl 5-methyl 4-(2-chlorophenyl)-6-methyl-2-[(2-oxoethoxy)methyl]-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-{[(2E)-2-(hydroxyimino)ethoxy]methyl}-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→[(4S)-2,2-Dimethyl-1,3-dioxolan-4-yl]methanol→ethyl 4-[(2,2-dimethyl-1,3-dioxolan-4-yl)methoxy]-3-oxobutanoate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-{[(2,2-dimethyl-1,3-dioxolan-4-yl)methoxy]methyl}-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-ethyl 5-methyl 4-(2-chlorophenyl)-2-[(2,3-dihydroxypropoxy)methyl]-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate
2-Aminoethyl alcohol→2-Chloroethanol→2-(2-Hydroxyethyl)-1H-isoindole-1,3(2H)-dione→Ethyl 4-chloro-3-oxobutanoate→Ethyl 4-bromoacetoacetate→Ethyl 4-(2-phthalimidoethoxy)acetoacetate→2-Chlorobenzaldehyde→2-(2-Chlorobenzylidene)-4-(2-phthalimidoethoxy)acetoacetic acid ethyl ester→3-Amino-2-butenoic acid methyl ester→3-Ethyl 5-methyl (4RS)-4-(2-chlorophenyl)-2-[[2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)ethoxy]methyl]-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-Ethyl 5-methyl 2-((2-aminoethoxy)methyl)-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate
2-Aminoethyl alcohol→2-Chloroethanol→2-(2-Hydroxyethyl)-1H-isoindole-1,3(2H)-dione→Ethyl 4-chloro-3-oxobutanoate→Ethyl 4-bromoacetoacetate→Ethyl 4-(2-phthalimidoethoxy)acetoacetate→2-Chlorobenzaldehyde→2-(2-Chlorobenzylidene)-4-(2-phthalimidoethoxy)acetoacetic acid ethyl ester→3-Amino-2-butenoic acid methyl ester→3-Ethyl 5-methyl (4RS)-4-(2-chlorophenyl)-2-[[2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)ethoxy]methyl]-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate→3-Ethyl 5-methyl 2-((2-aminoethoxy)methyl)-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate
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