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CAS 34580-13-7
4-(1-methylpiperidin-4-ylidene)-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-10(9H)-one4-(1-Methyl-4-piperidinylidene)-4,9-dihydro-10H-benzo[4,5]cyclohepta[1,2-b]thiophen-10-one
Codes: Ketotifen, (VIII)471701-1-a,(VIII)471701-1-b, (I)471701-2-a
Application context (from source-drug indications)
Influenza virus infectionNorketotifenAllergic conjunctivitisNorketotifenAllergic rhinitisNorketotifen
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| Norketotifen | 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.
4-(1-methylpiperidin-4-ylidene)-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-10(9H)-one→4-(piperidin-4-ylidene)-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-10(9H)-one
6-Thiatricyclo[8.4.0.0(3,7)]tetradeca-1(14),3(7),4,8,10,12-hexaen-2-one→8,9-Dibromo-6-thiatricyclo[8.4.0.0(3,7)]tetradeca-1(10),3(7),4,11,13-pentaen-2-one→9-Bromo-10-methoxy-9,10-dihydro-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-one→10-Methoxy-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-one→1-Methylpiperidn-4-ylmagnesium chloride→4-Chloro-1-methylpiperidine→10-Methoxy-4-(1-methylpiperidin-4-yl)-4H-benzo[4,5]cyclohepta[1,2-b]thiophene-4-ol→4-(1-Methyl-4-piperidinylidene)-4,9-dihydro-10H-benzo[4,5]cyclohepta[1,2-b]thiophen-10-one→4-[8-Oxo-6-thiatricyclo[8.4.0.0(3,7)]tetradeca-1(14),3(7),4,10,12-pentaen-2-ylidene]piperidine-1-carboxylic acid ethyl ester→1-Chloroethyl 4-(10-oxo-9,10-dihydro-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-ylidene)piperidine-1-carboxylate
8,9-Dibromo-6-thiatricyclo[8.4.0.0(3,7)]tetradeca-1(10),3(7),4,11,13-pentaen-2-one→1-Methylpiperidn-4-ylmagnesium chloride→4-(1-Methyl-4-piperidinylidene)-4,9-dihydro-10H-benzo[4,5]cyclohepta[1,2-b]thiophen-10-one→6-thiatricyclo[8.4.0.0(3,7)]tetradeca-1(10),3(7),4,11,13-pentaen-2-one→8-bromo-6-thiatricyclo[8.4.0.0(3,7)]tetradeca-1(10),3(7),4,8,11,13-hexaen-2-one→8-bromo-2-(1-methylpiperidin-4-yl)-6-thiatricyclo[8.4.0.0(3,7)]tetradeca-1(10),3(7),4,8,11,13-hexaen-2-ol→4-{8-bromo-6-thiatricyclo[8.4.0.0(3,7)]tetradeca-1(10),3(7),4,8,11,13-hexaen-2-ylidene}-1-methylpiperidine→Azacyclohexane→1-Methyl-4-[9-(piperidin-1-yl)-6-thiatricyclo[8.4.0.0(3,7)]tetradeca-1(14),3(7),4,8,10,12-hexaen-2-ylidene]piperidine→1-methyl-4-[8-(piperidin-1-yl)-6-thiatricyclo[8.4.0.0(3,7)]tetradeca-1(10),3(7),4,8,11,13-hexaen-2-ylidene]piperidine→2-(1-Methylpiperidin-4-ylidene)-6-thiatricyclo[8.4.0.0(3,7)]tetradeca-1(14),3(7),4,10,12-pentaen-9-one
4-(1-Methyl-4-piperidinylidene)-4,9-dihydro-10H-benzo[4,5]cyclohepta[1,2-b]thiophen-10-one→Acetic acid acetic anhydride→Dicarbonic acid diethyl diester→Methylacetic anhydride→Benzoic acid anhydride→Dibenzyl dicarbonate→Butanoic acid 1-oxobutyl ester→4-(1-Acetylpiperidin-4-ylidene)-4,9-dihydro-10H-benzo[4,5]cyclohepta[1,2-b]thiophen-10-one→4-[8-Oxo-6-thiatricyclo[8.4.0.0(3,7)]tetradeca-1(14),3(7),4,10,12-pentaen-2-ylidene]piperidine-1-carboxylic acid ethyl ester→4-(1-Propanoylpiperidin-4-ylidene)-4,9-dihydro-10H-benzo[4,5]cyclohepta[1,2-b]thiophen-10-one→4-(1-Benzoylpiperidin-4-ylidene)-4,9-dihydro-10H-benzo[4,5]cyclohepta[1,2-b]thiophen-10-one→Benzyl 4-(10-oxo-9,10-dihydro-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-ylidene)piperidine-1-carboxylate→4-(1-Butanoylpiperidin-4-ylidene)-4,9-dihydro-10H-benzo[4,5]cyclohepta[1,2-b]thiophen-10-one
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