Abstract:
A (4-arylpiperazin-1-yl)piperidine derivative is provided to inhibit activities of beta-secretase, thereby treating and preventing neurodegenerative diseases such as Alzheimer diseases and Downs syndrome. A pharmaceutical composition comprises piperidine derivative wherein arylpiperazin is substituted represented by the formula 1 and pharmaceutically allowable salts thereof. In the formula 1, R1 and R2 are independently -O-CO-R4 or the formula 1a, wherein R4 represents C6-C12 aryl group in which C6-C10-aryl-C1-C4 alkyl group, C6-C12 aryl group, C1-C5 aryloxy or C6-C12 aryloxy group is substituted; and R3 is hydrogen, -CO-NH-(CH2)m-R5 or -CO-NH-C(R6)(R7)-(CH2)m-COO-R8. In the formula 1a, Z is hydrogen, halogen, C1-C4 liner or branched alkyl group or C1-C5 alkoxy group, wherein R5 is C6-C12 aryl group in which one or two C1-C4 linear or branched alkyl, C1-C5 alkoxy or halogen; m is an integer of 0~2; R6 and R7 are independently hydrogen, C1-C4 linear or branched alkyl group or benzyl group; and R8 is C1-C4 linear or branched alkyl group.
Abstract:
본 발명은 다음 화학식 1의 후퍼진-타크린 하이브리드(huperzine-tacrine hybrid) 유도체 및 이의 제조방법에 관한 것으로서, 본 발명의 후퍼진-타크린 하이브리드 유도체 는 치매치료에 효과가 있는 것으로 잘 알려져 있는 후퍼진 A 와 타크린 화합물의 혼합체로서 아세틸콜린에스트라제(AChE) 저해제로서의 활성을 보여준다. [화학식 1]
(상기 화학식 1에서, X는 수소, 할로겐기 또는 C 1 ~C 6 의 알킬기이고, m은 1 내지 3이고, n은 1 또는 2이다.) 후퍼진-타크린 하이브리드, 치매, 후퍼진, 타크린, 아세틸콜린에스테라제 저해제
Abstract:
PURPOSE: A process for preparing 1,2,3,6-tetrahydropyridinyl-benzimidazole derivatives is provided, thereby preparing the 1,2,3,6-tetrahydropyridinyl-benzimidazole derivatives which are useful for treatment of dementia as a muscarinic receptor agonist with improved yield. CONSTITUTION: The process for preparing 1,2,3,6-tetrahydropyridinyl-benzimidazole derivatives represented by formula (1) and pharmaceutically acceptable salts thereof comprises the steps of: (a) reacting 4-pyridinecarboxalaldehyde of formula (2) with a compound of formula (3) and iodibenzene diacetate(IBD) in solvent to prepare a compound of formula (4); (b) reacting the compound of formula (4) with KOH/CH3I to prepare a 5/6-substituent isomer compound of formula (5); (c) reacting the compound of formula (5) with CH3I to prepare a compound of formula (7); and (d) reacting the compound of formula (7) with NaBH4, and treating a reaction product with acid, wherein X is NH or NCH3; R is H, NH2, Cl, NO2 or OCH3; and HA is an organic or inorganic salt selected from HCl, oxalic acid, p-toluenesulfonate, tartaric acid and fumaric acid.
Abstract:
PURPOSE: Provided is a process for preparing pyridone derivative represented by the formula(1) and useful as a therapeutics of Alzheimer's disease(AD). CONSTITUTION: The process for preparing pyridione derivative of the formula(1) comprises the steps of; reacting 1,4-cyclohexanedione monoketal of the formula(2) with secondary amine under acid catalyst; then treating the resultant with propiolamide of the formula(3) to obtain the compound of the formula(1). In the formulae, R1 and R2 represent individually C1-C6 alkyl group or R1 and R2 bind together to form 5-8 membered hetero ring.
Abstract:
본 발명은 세펨 유도체의 제조방법에 관한 것으로, 아미노티아졸 유도체를 벤조트리아졸 유도체와 염기하에서 반응시켜 아미노티아졸 활성형 유도체를 제조하고, 이 아미노티아졸 활성형 유도체를 염기 존재하에서 7-아미노세파로스포린산 유도체와 아실화 반응시키는 것을 특징으로 하는 세펨 유도체의 제조방법인 것이다. 본 발명의 신규한 세펨 유도체의 제조방법에 따라, 합성이 용이한 벤조트리아졸 유도체를 이용하여 아미노티아졸 유도체를 활성화시키고, 얻어진 활성화된 아미노티아졸 유도체와 7-아미노세파로스포린산 유도체 간의 아실화 반응을 유도하여 간단하게 세펨 유도체를 합성할 수 있다. 또한 제조된 아미노티아졸 활성형 유도체는 기존 세파계 화합물의 합성 및 신규 세파계 화합물 합성에 광범위하게 이용될 수 있고, 특히 경구용 세파계인 프로드러그 화합물 합성에도 유동하게 사용할 수 있다.