Linetastine, Linazolast, YM-257, TMK-688, -Drug Synthesis Database

【结构式】

【药物名称】Linetastine, Linazolast, YM-257, TMK-688

【化学名称】N-[2-[4-(Diphenylmethoxy)piperidin-1-yl]ethyl]-5-[4-(ethoxycarbonyloxy)-3-methoxyphenyl]-2(E),4(E)-pentadienamide

【CA登记号】159776-68-8, 110501-66-1 (undefined isomer)

【分子式】C₃₅H₄₀N₂O₆

【分子量】584.71885

【开发单位】Terumo (Originator)

【药理作用】Antiallergy/Antiasthmatic Drugs, Asthma Therapy, Drugs for Allergic Rhinitis, RESPIRATORY DRUGS, Treatment of Upper Respiratory Tract Disorders, Leukotriene Synthesis Inhibitors, Lipoxygenase Inhibitors

合成路线1 合成路线2

合成路线1

TMK 688 is derived trom the condensation ot 5-(3'-methoxy-4'-hydroxyphenyl)-2,4-pentadienoic acid (IV) and N-aminoethyl 4-diphenylmethoxypiperidine (X) in the presence of ethyl chloroformate in dichloromethane. Synthesis of intermediate (IV): Vanillin (I) is protected with ethyl chloroformate to give (II), which is then treated with triethyl 4-phosphonocrotonate and followed by alkali hydrolysis to produce (IV).

参考文献中间体

【1】 Tasaka, K.; TMK-688. Drugs Fut 1988, 13, 12, 1056.

中间体序号	中间体编号	品名	CAS号	分子式	供应商	用于合成
(A)	22705	ethyl (E)-4-(diethoxyphosphoryl)-2-butenoate		C₁₀H₁₉O₅P	详情	详情
(B)	22706	5-[4-(Ethoxycarbonyl)-3-methoxyphenyl]-2(E),4(E)-pentadienoic acid ethoxycarbonyl anhydride		C₁₈H₂₀O₇	详情	详情
(I)	22701	4-hydroxy-3-methoxybenzaldehyde	121-33-5	C₈H₈O₃	详情	详情
(II)	22702	ethyl 4-formyl-2-methoxyphenyl carbonate		C₁₁H₁₂O₅	详情	详情
(III)	22703	ethyl (2E,4E)-5-[4-[(ethoxycarbonyl)oxy]-3-methoxyphenyl]-2,4-pentadienoate		C₁₇H₂₀O₆	详情	详情
(IV)	22704	(2E,4E)-5-(4-hydroxy-3-methoxyphenyl)-2,4-pentadienoic acid		C₁₂H₁₂O₄	详情	详情
(X)	22707	2-[4-(benzhydryloxy)-1-piperidinyl]ethylamine; 2-[4-(benzhydryloxy)-1-piperidinyl]-1-ethanamine		C₂₀H₂₆N₂O	详情	详情

合成路线2

Synthesis of intermediate (X): 4-Hydroxypiperidine (V) is protected with ethyl chloroformate to give (VI), which is then condensed with bromodiphenylmethane in the presence of sodium carbonate yielding (VII). AIkali hydrolysis of (VII) gives (VIII), which is then treated with N-(2-bromoethyl)phthalimide to yield (IX). (IX) is then deprotected by a treatment of 80% hydrazine hydrate, producing (X).

参考文献中间体

【1】 Tasaka, K.; TMK-688. Drugs Fut 1988, 13, 12, 1056.

中间体序号	中间体编号	品名	CAS号	分子式	供应商	用于合成
	37025	2-(2-bromoethyl)-1H-isoindole-1,3(2H)-dione	574-98-1	C₁₀H₈BrNO₂	详情	详情
(IIb)	12079	Bromodiphenylmethane; 1-[Bromo(phenyl)methyl]benzene; Benzhydrylbromide	776-74-9	C₁₃H₁₁Br	详情	详情
(V)	12076	4-Piperidinol; 4-Hydroxypiperidine	5382-16-1	C₅H₁₁NO	详情	详情
(VI)	22709	ethyl 4-hydroxy-1-piperidinecarboxylate		C₈H₁₅NO₃	详情	详情
(VII)	12080	ethyl 4-(benzhydryloxy)tetrahydro-1(2H)-pyridinecarboxylate		C₂₁H₂₅NO₃	详情	详情
(VIII)	12081	4-(Benzhydryloxy)piperidine; Benzhydryl 4-piperidinyl ether		C₁₈H₂₁NO	详情	详情
(IX)	22713	2-[2-[4-(benzhydryloxy)-1-piperidinyl]ethyl]-1H-isoindole-1,3(2H)-dione		C₂₈H₂₈N₂O₃	详情	详情
(X)	22707	2-[4-(benzhydryloxy)-1-piperidinyl]ethylamine; 2-[4-(benzhydryloxy)-1-piperidinyl]-1-ethanamine		C₂₀H₂₆N₂O	详情	详情

Extended Information